The device supports MDC only when it operates in standalone mode. For more information about standalone mode, see IRF configuration in Virtual Technologies Configuration Guide. For more information about MDC and device models that support MDC, see MDC configuration in Virtual Technologies Configuration Guide.

additional-paths select-best

Use additional-paths select-best to set the maximum number of Add-Path optimal routes that can be advertised to all peers.

Use undo additional-paths select-best to restore the default.

Syntax

additional-paths select-best best-number

undo additional-paths select-best

Default

A maximum of one Add-Path optimal route can be advertised to all peers.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

best-number: Specifies the maximum number of Add-Path optimal routes that can be advertised to all peers, in the range of 2 to 32.

Usage guidelines

The number of optimal routes cannot exceed the maximum number of Add-Path optimal routes that can be advertised to all peers.

Examples

# In BGP IPv4 unicast address family view, set the maximum number to 3 for Add-Path optimal routes that can be advertised to all peers.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] additional-paths select-best 3

Related commands

peer additional-paths

peer advertise additional-paths best

address-family dedicated

Use address-family dedicated to create the BGP dedicated address family and enter its view, or enter the view of the existing BGP dedicated address family.

Use undo address-family dedicated to remove the BGP dedicated address family and all its configurations.

Syntax

address-family dedicated

undo address-family dedicated

Default

No BGP dedicated address family exists.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Configurations made in BGP dedicated address family view apply only to the BGP dedicated routes.

Examples

# In BGP instance view, create the BGP dedicated address family and enter its view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family dedicated

[Sysname-bgp-default-dedicated]

address-family ipv4

Use address-family ipv4 to create the BGP IPv4 unicast address family, BGP-VPN IPv4 unicast address family, or BGP IPv4 multicast address family, and enter its view, or enter the view of the existing address family.

Use undo address-family ipv4 to remove the BGP IPv4 unicast address family, BGP-VPN IPv4 unicast address family, or BGP IPv4 multicast address family, and all its configurations.

Syntax

In BGP instance view:

address-family ipv4 [ multicast | unicast ]

undo address-family ipv4 [ multicast | unicast ]

In BGP-VPN instance view:

address-family ipv4 [ unicast ]

undo address-family ipv4 [ unicast ]

Default

No BGP IPv4 unicast address family, BGP-VPN IPv4 unicast address family, or BGP IPv4 multicast address family exists.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

multicast: Specifies the IPv4 multicast address family.

unicast: Specifies the IPv4 unicast address family. If this command is executed with the unicast keyword in BGP instance view, it places you into BGP IPv4 unicast address family view. If this command is executed with the unicast keyword in BGP-VPN instance view, it places you into BGP-VPN IPv4 unicast address family view.

Usage guidelines

Configurations made in BGP IPv4 unicast address family view apply only to the BGP IPv4 unicast routes and peers of the public network.

Configurations made in BGP-VPN IPv4 unicast address family view apply only to the BGP IPv4 unicast routes and peers of the specified VPN instance.

Configurations made in BGP IPv4 multicast address family view apply only to the BGP IPv4 multicast routes and peers.

By default, the unicast keyword is used if you do not specify the multicast, unicast keyword.

Examples

# In BGP instance view, create the BGP IPv4 unicast address family and enter its view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4]

address-family ipv6

Use address-family ipv6 to create the BGP IPv6 unicast address family, BGP-VPN IPv6 unicast address family, or BGP IPv6 multicast address family, and enter its view, or enter the view of the existing address family.

Use undo address-family ipv6 to remove the BGP IPv6 unicast address family, BGP-VPN IPv6 unicast address family, or BGP IPv6 multicast address family, and all its configurations.

Syntax

In BGP instance view:

address-family ipv6 [ multicast | unicast ]

undo address-family ipv6 [ multicast | unicast ]

In BGP-VPN instance view:

address-family ipv6 [ unicast ]

undo address-family ipv6 [ unicast ]

Default

No BGP IPv6 unicast address family, BGP-VPN IPv6 unicast address family, or BGP IPv6 multicast address family exists.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

unicast: Specifies the IPv6 unicast address family. If this command is executed with the unicast keyword in BGP instance view, it places you into BGP IPv6 unicast address family view. If this command is executed with the unicast keyword in BGP-VPN instance view, it places you into BGP-VPN IPv6 unicast address family view.

multicast: Specifies the IPv6 multicast address family.

Usage guidelines

Configurations made in BGP IPv6 unicast address family view apply only to the BGP IPv6 unicast routes and peers of the public network.

Configurations made in BGP-VPN IPv6 unicast address family view apply only to the BGP IPv6 unicast routes and peers of the specified VPN instance.

Configurations made in BGP IPv6 multicast address family view apply only to the BGP IPv6 multicast routes and peers.

By default, the unicast keyword is used if neither the multicast keyword nor the unicast keyword is specified.

Examples

# In BGP instance view, create the BGP IPv6 unicast address family and enter its view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv6 unicast

[Sysname-bgp-default-ipv6]

address-family link-state

Use address-family link-state to create the BGP LS address family and enter its view, or enter the view of the existing address family.

Use undo address-family link-state to remove the BGP LS address family and all its configurations.

Syntax

address-family link-state

undo address-family link-state

Default

No BGP LS address family exists.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Configurations made in BGP LS address family view apply only to the BGP LS routes and peers of the public network.

Examples

# In BGP instance view, create the BGP LS address family and enter its view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family link-state

[Sysname-bgp-default-ls]

advertise lowest-priority on-peer-up duration

Use advertise lowest-priority on-peer-up duration to minimize the priority of the routes advertised to a peer after the peer state changes from DOWN to UP.

Use undo advertise lowest-priority on-peer-up duration to restore the default.

Syntax

advertise lowest-priority on-peer-up duration seconds

undo advertise lowest-priority on-peer-up duration

Default

BGP does not change the priority of the routes advertised to its peers.

Views

BGP instance view

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP-VPN VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

seconds: Set the time to wait for route priority restoration. The value range for the wait time is 1 to 864000 seconds.

Usage guidelines

By default, the device sends BGP routes immediately to a peer when the peer state changes to UP. If the device advertises routes before completing ARP or ND table convergence, the traffic matching these advertised routes might not be forwarded correctly, which causes traffic loss.

To resolve this issue, use this command to minimize the priority of the routes to be advertised after the state of a peer changes from DOWN to UP. The peer will not select the routes received from the device as the optimal routes. After the device completes ARP or ND table convergence and the specified wait time elapses, the device restores the priority of the routes advertised to the peer.

After you use this command, the device performs the following tasks when the state of a peer changes from DOWN to UP:

1. Set the local preference value to the minimum (zero) and the MED value to the maximum (4294967295) for the routes to be advertised.

2. After the specified wait time elapses, restore the local preference value and the MED value for the advertised routes, and then advertise these routes immediately.

For the device to restore the priority of the advertised routes before the specified wait time elapses, you can use one of the following commands:

¡ reset bgp advertise lowest-priority on-peer-up

After you use this command, the device immediately sends BGP routes with the original local preference value and MED value to the peer. If the state of a peer changes from DOWN to UP later, the device still minimizes the priority of the routes advertised to that peer.

¡ undo advertise lowest-priority on-peer-up duration

After you use this command, the device immediately sends BGP routes with the original local preference value and MED value to the peer. The device does not change the original local preference value and MED value for the subsequent routes advertised to peers.

You can use the advertise lowest-priority on-peer-up duration command in BGP instance view or BGP address family view:

· If you use this command in the view of a BGP instance, this command takes effect on all address families in the instance.

· If you use this command in the view of a BGP address family, this command takes effect only on the address family.

· For a BGP address family, the configuration of this command in BGP address family view takes precedence over that in BGP instance view.

You can use this command multiple times to change the wait time. After you change the wait time, the following rules apply:

· If the original wait time setting is taking effect, the new wait time setting will immediately take over and the device will update the time to wait for route priority restoration.

For example, you can set the wait time to 10 seconds by using the advertise lowest-priority on-peer-up duration 10 command. Then, you use the advertise lowest-priority on-peer-up duration 6 command to set a new wait time six seconds after the state of a peer changes from DOWN to UP. The device will still minimize the priority of the routes advertised to the peer during the following six seconds.

· If the original wait time is not taking effect, the new wait time will take effect after the state of a peer changes from DOWN to UP.

The following commands can influence each other:

· advertise lowest-priority on-peer-up duration

· advertise lowest-priority on-startup duration

· bgp update-delay on-startup

· route-update-delay

When you use two of the commands above together, the configuration result varies by command as follows:

Table 1 Configuration results

Command A	Command B	Configuration result
bgp update-delay on-startup	advertise lowest-priority on-startup duration in BGP instance view	Command A and command B overwrite each other. The command used at last takes effect.
	advertise lowest-priority on-peer-up duration in BGP instance view	Provided that the delay time specified in command A is TA and the wait time specified in command B is TB, the two commands take effect as follows after the device restarts and the BGP process recovers: · If TA ≥ TB, only command A takes effect. · If TA < TB, the device performs the following tasks: a. The device does not send any BGP routes to peers within TA. b. After TA elapses, the device sends BGP routes to peers and minimizes the priority of these routes during the remaining time (TB minus TA). c. After TB elapses, the device restores the priority of the advertised routes, and then immediately sends them to peers. The device does not minimize the priority of the subsequent routes advertised to peers.
	route-update-delay	Both command A and command B take effect after the device restarts and the BGP process recovers. Provided that the delay time specified in command A is TA, the device can advertise BGP routes to a peer only after TA plus TS elapses. TS represents the larger interval among the intervals specified in the peer route-update-interval command and command B. If you did not execute the peer route-update-interval command for the peer, the device uses the default value of this command to compare with the interval configured in command B.
	advertise lowest-priority on-startup duration in the view of a BGP address family	· In the address family configured with command B, only command B takes effect. · In the address families not configured with command B, command A takes effect.
	advertise lowest-priority on-peer-up duration in the view of a BGP address family	Provided that the delay time specified in command A is TA and the wait time specified in command B is TB, the following rules apply: · In the address families not configured with command B, only command A takes effect. · In the address family configured with command B, the two commands take effect as follows after the device restarts and the BGP process recovers: ¡ If TA ≥ TB, only command A takes effect. ¡ If TA < TB, the device performs the following tasks: i. The device does not send any BGP routes to peers within TA. ii. After TA elapses, the device sends BGP routes to peers and minimizes the priority of these routes during the remaining time (TB minus TA). iii. After TB elapses, the device restores the priority of the advertised routes, and then immediately sends them to peers. The device does not minimize the priority of the subsequent routes advertised to peers.
route-update-delay	advertise lowest-priority on-startup duration in BGP instance view	· In BGP EVPN address family, only command B takes effect. · The following description applies to BGP IPv4 unicast address family, BGP-VPN IPv4 unicast address family, BGP IPv6 unicast address family, BGP-VPN IPv6 unicast address family, BGP VPNv4 address family, BGP-VPN VPNv4 address family, and BGP VPNv6 address family. Provided that the wait time specified in command B is TB, the two commands take effect as follows after the device restarts and the BGP process recovers: ¡ If TS ≥ TB, only command A takes effect. ¡ If TS < TB, the device performs the following tasks: i. The device does not send any BGP routes to peers within TS. ii. After TS elapses, the device sends BGP routes to peers and minimizes the priority of these routes during the remaining time (TB minus TS). iii. After TB elapses, the device restores the priority of the advertised routes, and then immediately sends them to peers. The device does not minimize the priority of the subsequent routes advertised to peers. TS represents the larger interval among the intervals specified in the peer route-update-interval command and command A. If you did not execute the peer route-update-interval command for the peers, the device uses the default value of this command to compare with the interval configured in command A.
	advertise lowest-priority on-peer-up duration in BGP instance view	· In BGP EVPN address family, only command B takes effect. · The following description applies to BGP IPv4 unicast address family, BGP-VPN IPv4 unicast address family, BGP IPv6 unicast address family, BGP-VPN IPv6 unicast address family, BGP VPNv4 address family, BGP-VPN VPNv4 address family, and BGP VPNv6 address family. Provided that the wait time specified in command B is TB, the two commands take effect as follows when the state of a peer changes from DOWN to UP: ¡ If TS ≥ TB, only command A takes effect. ¡ If TS < TB, the device performs the following tasks: i. The device does not send any BGP routes to the peer within TS. ii. After TS elapses, the device sends BGP routes to the peer and minimizes the priority of these routes during the remaining time (TB minus TS). iii. After TB elapses, the device restores the priority of the advertised routes, and then immediately sends them to the peer. The device does not minimize the priority of the subsequent routes advertised to the peer. TS represents the larger interval among the intervals specified in the peer route-update-interval command and command A. If you did not execute the peer route-update-interval command for the peer, the device uses the default value of this command to compare with the interval configured in command A.
	advertise lowest-priority on-startup duration in BGP IPv4 unicast address family view, BGP-VPN IPv4 unicast address family view, BGP IPv6 unicast address family view, BGP-VPN IPv6 unicast address family view, BGP VPNv4 address family view, BGP-VPN VPNv4 address family view, or BGP VPNv6 address family view	Provided that the wait time specified in command B is TB, the following rules apply: · In the address families not configured with command B, only command A takes effect. · In the address family configured with command B, the two commands take effect as follows after the device restarts and the BGP process recovers: ¡ If TS ≥ TB, only command A takes effect. ¡ If TS < TB, the device performs the following tasks: i. The device does not send any BGP routes to peers within TS. ii. After TS elapses, the device sends BGP routes to peers and minimizes the priority of these routes during the remaining time (TB minus TS). iii. After TB elapses, the device restores the priority of the advertised routes, and then immediately sends them to peers. The device does not minimize the priority of the subsequent routes advertised to peers. TS represents the larger interval among the intervals specified in the peer route-update-interval command and command A. If you did not execute the peer route-update-interval command for the peers, the device uses the default value of this command to compare with the interval configured in command A.
	advertise lowest-priority on-peer-up duration in BGP IPv4 unicast address family view, BGP-VPN IPv4 unicast address family view, BGP IPv6 unicast address family view, BGP-VPN IPv6 unicast address family view, BGP VPNv4 address family view, BGP-VPN VPNv4 address family view, or BGP VPNv6 address family view	Provided that the wait time specified in command B is TB, the following rules apply: · In the address families not configured with command B, only command A takes effect. · In the address family configured with command B, the two commands take effect as follows when the state of a peer changes from DOWN to UP: ¡ If TS ≥ TB, o nly command A takes effect. ¡ If TS < TB, the device performs the following tasks: i. The device does not send any BGP routes to the peer within TS. ii. After TS elapses, the device sends BGP routes to the peer and minimizes the priority of these routes during the remaining time (TB minus TS). iii. After TB elapses, the device restores the priority of the advertised routes, and then immediately sends them to the peer. The device does not minimize the priority of the subsequent routes advertised to the peer. TS represents the larger interval among the intervals specified in the peer route-update-interval command and command A. If you did not execute the peer route-update-interval command for the peer, the device uses the default value of this command to compare with the interval configured in command A.
	advertise lowest-priority on-startup duration or advertise lowest-priority on-peer-up duration in BGP EVPN address family view	Only command B takes effect.
advertise lowest-priority on-startup duration in BGP instance view	advertise lowest-priority on-peer-up duration in BGP instance view	Command A is mutually exclusive with command B.
	advertise lowest-priority on-peer-up duration in the view of a BGP address family	· In the address family configured with command B, only command B takes effect. · In the address families not configured with command B, only command A takes effect.
advertise lowest-priority on-peer-up duration in BGP instance view	advertise lowest-priority on-startup duration in the view of a BGP address family	· In the address family configured with command B, only command B takes effect. · In the address families not configured with command B, only command A takes effect.
advertise lowest-priority on-peer-up duration in the view of a BGP address family	advertise lowest-priority on-startup duration in the view of a BGP address family	Command A is mutually exclusive with command B in the same address family.

‌

Examples

# In BGP instance view, minimize the priority of the routes advertised to a peer after the peer state changes from DOWN to UP, and set the wait time to 100 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] advertise lowest-priority on-peer-up duration 100

Related commands

advertise lowest-priority on-startup duration

bgp update-delay on-startup

reset bgp advertise lowest-priority

advertise lowest-priority on-startup duration

Use advertise lowest-priority on-startup duration to minimize the priority of the routes advertised to peers after the device restarts and the BGP process recovers.

Use undo advertise lowest-priority on-startup duration to restore the default.

Syntax

advertise lowest-priority on-startup duration seconds

undo advertise lowest-priority on-startup duration

Default

BGP does not change the priority of the routes advertised to its peers.

Views

BGP instance view

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP-VPN VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

seconds: Set the time to wait for route priority restoration. The value range for the wait time is 1 to 3600 seconds.

Usage guidelines

By default, the device sends BGP routes immediately to peers after the device restarts and the BGP process recovers. If the device advertises routes before completing ARP or ND table convergence, the traffic matching these advertised routes might not be forwarded correctly, which causes traffic loss.

To resolve this issue, use this command to minimize the priority of the routes to be advertised after the device restarts and the BGP process recovers. Peers will not select the routes received from the device as the optimal routes. After the device completes ARP or ND table convergence and the specified wait time elapses, the device restores the priority of the routes advertised to the peers.

After you use this command, the device performs the following tasks after the device restarts and the BGP process recovers:

1. Set the local preference value to the minimum (zero) and the MED value to the maximum (4294967295) for the routes to be advertised.

2. After the specified wait time elapses, restore the local preference value and the MED value for the advertised routes, and then advertise these routes immediately.

For the device to restore the priority of the advertised routes before the specified wait time elapses, use one of the following commands:

¡ reset bgp advertise lowest-priority on-startup

After you use this command, the device immediately sends BGP routes with the original local preference value and MED value to peers. The device does not minimize the priority of the subsequent routes advertised to the peers unless the device restarts again.

¡ undo advertise lowest-priority on-startup duration

After you use this command, the device immediately sends BGP routes with the original local preference value and MED value to peers. The device does not change the original local preference value and MED value for the subsequent routes advertised to the peers.

When you use the advertise lowest-priority on-startup duration command, follows these guidelines:

· You can use this command in BGP instance view or BGP address family view:

¡ If you use this command in the view of a BGP instance, this command takes effect on all address families in the instance.

¡ If you use this command in the view of a BGP address family, this command takes effect only on the address family.

¡ For a BGP address family, the configuration of this command in BGP address family view takes precedence over that in BGP instance view.

· The configuration of this command does not take effect immediately. It takes effect only after the device restarts.

The following commands can influence the configuration of each other:

· advertise lowest-priority on-peer-up duration

· advertise lowest-priority on-startup duration

· bgp update-delay on-startup

· route-update-delay

When you use two of the commands above together, the configuration result varies by command. For more information, see Table 1.

Examples

# In BGP instance view, minimize the priority of the routes advertised to a peer after the device restarts and the BGP process recovers, and set the wait time to 100 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] advertise lowest-priority on-startup duration 100

Related commands

advertise lowest-priority on-peer-up duration

bgp update-delay on-startup

reset bgp advertise lowest-priority

advertise-rib-active

Use advertise-rib-active to enable BGP to advertise only the optimal BGP routes in the IP routing table.

Use undo advertise-rib-active to restore the default.

Syntax

advertise-rib-active

undo advertise-rib-active

Default

In BGP instance view, BGP advertises optimal routes in the BGP routing table, regardless of whether they are optimal in the IP routing table. In other views, the setting is the same as that in BGP instance view.

Views

BGP instance view

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

The advertise-rib-active command does not apply to the following routes:

· Routes redistributed by the import-route command.

· Routes advertised by the network command.

· Default routes redistributed by the default-route imported command.

· VPNv4 routes.

· VPNv6 routes.

· IPv4 multicast routes.

· IPv6 multicast routes.

This command takes effect only on the routes generated after you execute this command. To apply this command to existing routes, use the reset bgp command to reset BGP sessions.

The setting in BGP unicast address family view applies when it is different from that in BGP instance view.

This command is mutually exclusive with the routing-table bgp-rib-only command.

Examples

# In BGP instance view, enable BGP to advertise optimal routes in the IP routing table.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] advertise-rib-active

aggregate

Use aggregate to create a summary route in the BGP routing table.

Use undo aggregate to remove a summary route.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv4 multicast address family view:

aggregate ipv4-address { mask-length | mask } [ as-set | attribute-policy route-policy-name | detail-suppressed | origin-policy route-policy-name | suppress-policy route-policy-name ] *

undo aggregate ipv4-address { mask-length | mask }

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view/BGP IPv6 multicast address family view:

aggregate ipv6-address prefix-length [ as-set | attribute-policy route-policy-name | detail-suppressed | origin-policy route-policy-name | suppress-policy route-policy-name ] *

undo aggregate ipv6-address prefix-length

Default

No summary routes are configured.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-address: Specifies an IPv4 summary address.

mask-length: Specifies a mask length for the IPv4 summary address, in the range of 0 to 32.

mask: Specifies a mask for the IPv4 summary address, in dotted decimal notation.

ipv6-address: Specifies an IPv6 summary address.

prefix-length: Specifies a prefix length for the IPv6 summary address, in the range of 0 to 128.

as-set: Enables the AS_PATH attribute of the summary route to contain the AS path information for all summarized routes. The AS_PATH attribute is of the AS_SET type that requires no sequence when arranging AS numbers. If you do not specify this keyword, the AS_PATH attribute of the summary route contains only the AS number of the local router.

attribute-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters, to set attributes for the summary route.

detail-suppressed: Advertises only the summary route. If you do not specify this keyword, BGP advertises both the summary route and the more specific routes.

origin-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters, to select routes to be summarized.

suppress-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters, to filter more specific routes to be advertised. Routes permitted by the specified routing policy are not advertised. Routes denied by the specified routing policy are advertised.

Usage guidelines

This command creates a summary route. If the BGP routing table has routes whose destination addresses fall within the specified network, the summary route is added to the BGP routing table. For example, if two routes 10.1.1.0/24 and 10.1.2.0/24 exist in the BGP routing table, configuring the aggregate 10.1.0.0 16 command creates a summary route 10.1.0.0/16.

In BGP-VPN IPv4/IPv6 unicast address family view, this command is also applicable to type 2 and type 5 BGP EVPN routes that have the same RD as that of the current VPN instance. For example, two type 5 routes 10.1.1.0/24 and 10.1.2.0/24 exist in the BGP EVPN routing table. Configuring the aggregate 10.1.0.0 16 command in BGP-VPN IPv4 unicast address family view creates a type 5 EVPN summary route 10.1.0.0/16. If you specify the detail-suppressed keyword, BGP does not advertise the detailed routes.

If the summarized routes have different ORIGIN attributes, the summary route selects the ORIGIN attribute in the sequence of INCOMPLETE, EGP, and IGP. For example, if the ORIGIN attributes of the summarized routes include INCOMPLETE and IGP, the ORIGIN attribute of the summary route is INCOMPLETE.

The COMMUNITY attribute of the summary route includes all the COMMUNITY (or extended community) attribute values if the routes have the following details:

· Summarized routes have different COMMUNITY (or extended community) attribute values.

· The summary route does not have the ATOMIC_AGGREGATE attribute.

Table 2 Functions of the keywords

Keywords	Function
as-set	Enables the summary route to carry the AS path information for all summarized routes. This feature can help avoid routing loops. However, if many routes are summarized and are changed frequently, do not specify this keyword. This configuration causes the summary route to flap with the more specific routes.
attribute-policy	Sets attributes except the AS-PATH attribute for the summary route. The peer route-policy command can achieve the same purpose. The attribute-policy and as-set keywords are mutually exclusive when they are used to modify the AS_PATH attribute for the summary route. Modifying the AS_PATH attribute of the summary route might cause routing loops.
detail-suppressed	Disables advertisement of all more specific routes. To disable advertisement of some more specific routes, use the suppress-policy keyword or the peer filter-policy command.
origin-policy	Summarizes only routes matching a routing policy. If the destination address of a route falls within the summary network but does not match the routing policy, the route is not summarized. It is not controlled by the detail-suppressed and suppress-policy keywords. There is no need to configure apply clauses for the routing policy applied by the origin-policy keyword because they do not take effect.
suppress-policy	Disables advertisement of some more specific routes filtered by a routing policy. The routing policy uses if-match clauses to filter routes. There is no need to configure apply clauses for the routing policy applied by the suppress-policy keyword because they do not take effect.

‌

Examples

# In BGP IPv4 unicast address family view, create summary route 1.1.0.0/16 in the BGP routing table.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] aggregate 1.1.0.0 255.255.0.0

Related commands

display bgp routing-table ipv4 multicast

display bgp routing-table ipv4 unicast

display bgp routing-table ipv6 multicast

display bgp routing-table ipv6 unicast

summary automatic

balance

Use balance to enable load balancing and set the maximum number of BGP ECMP routes for load balancing.

Use undo balance to disable load balancing.

Syntax

balance [ ebgp | eibgp | ibgp ] number [ ecmp-nexthop-local | ecmp-nexthop-unchanged ]

undo balance [ ebgp | eibgp | ibgp ]

Default

Load balancing is disabled.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

ebgp: Enables load balancing over EBGP routes.

eibgp: Enables load balancing between EBGP and IBGP routes.

ibgp: Enables load balancing over IBGP routes.

number: Specifies the maximum number of BGP ECMP routes for load balancing. When it is set to 1, load balancing is disabled.

ecmp-nexthop-local: Sets the local device IP as the next hop of each BGP ECMP route for load balancing.

ecmp-nexthop-unchanged: Retains the next hop of each BGP ECMP route for load balancing.

Usage guidelines

Unlike IGP, BGP has no explicit metric for making load balancing decision. Instead, it implements load balancing by modifying route selection rules.

If multiple BGP routes destined for a network meet the following conditions, the device selects the specified number of routes for load balancing:

BGP uses the following load balancing criteria to determine load balanced routes:

· The routes have the same ORIGIN, LOCAL_PREF, and MED attributes.

· The routes meet the following requirements on the AS_PATH attribute:

¡ If the balance as-path-neglect command is configured, the routes can have different AS_PATH attributes.

¡ If only the balance as-path-relax command is configured, the routes can have different AS_PATH attributes, but the length of the AS_PATH attributes must be the same.

¡ If neither the balance as-path-neglect nor the balance as-path-relax command is configured, the routes must have the same AS_PATH attribute.

· The next hops of the routes meet the following requirements on IGP metrics:

¡ If neither the bestroute igp-metric-ignore command nor the balance igp-metric-ignore command is not configured, the next hops of the routes must have the same IGP metric value.

¡ If either the bestroute igp-metric-ignore command or the balance igp-metric-ignore command is configured, the next hops of the routes can have different IGP metric values.

· The routes have the same MPLS label assignment status (labeled or not labeled).

When you use the balance command without specifying the ecmp-nexthop-local or ecmp-nexthop-unchanged keyword, BGP advertises the routes used for load balancing to IBGP peers as follows:

· Without the Add-Path feature configured, BGP advertises only the optimal route among the routes used for load balancing and sets the local device IP as the next hop of that optimal route.

· With the Add-Path feature configured, BGP performs the following tasks:

¡ Advertises the routes used for load balancing. The number of routes that BGP can advertise equals the maximum number of Add-Path optimal routes that can be advertised.

¡ Sets the local device IP as the next hop of the optimal route among the advertised routes.

The value range for the number argument depends on the max-ecmp-num command. If you set the maximum number of ECMP routes to m by using the max-ecmp-num command and reboot the device, the number argument in the balance command is in the range of 1 to m.

If you do not specify the ibgp, eibgp, or ebgp keyword, this command enables load balancing over EBGP routes and IBGP routes, but not between EBGP and IBGP routes.

The configuration of the balance eibgp number command can be removed only by executing the undo balance eibgp command.

After you execute the balance eibgp number command, the balance [ ebgp | ibgp ] number command cannot be executed; and vice versa.

Examples

# In BGP IPv4 unicast address family view, enable load balancing and set the maximum number of BGP ECMP routes used for load balancing to 2.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] balance 2

Related commands

balance as-path-neglect

balance as-path-relax

balance igp-metric-ignore

bestroute igp-metric-ignore

max-ecmp-num

balance as-path-neglect

Use balance as-path-neglect to enable BGP to ignore the AS_PATH attribute when it implements load balancing.

Use undo balance as-path-neglect to restore the default.

Syntax

balance as-path-neglect

undo balance as-path-neglect

Default

BGP does not ignore the AS_PATH attribute when it implements load balancing.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

For BGP to implement load balancing over routes with different AS_PATH attributes, you must use this command together with the balance command.

After this command is executed, BGP ignores the AS_PATH attributes in the routes for load balancing and changes the attributes of the advertised routes to those of the optimal route. The operations might cause routing loops. Therefore, use this command with caution.

Examples

# In BGP IPv4 unicast address family view, enable BGP to ignore the AS_PATH attribute when it implements load balancing.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] balance as-path-neglect

Related commands

balance

balance as-path-relax

Use balance as-path-relax to enable load balancing for routes that have different AS_PATH attributes of the same length.

Use undo balance as-path-relax to restore the default.

Syntax

balance as-path-relax [ ebgp | ibgp ]

undo balance as-path-relax [ ebgp | ibgp ]

Default

BGP cannot perform load balancing for routes that have different AS_PATH attributes of the same length.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

ebgp: Enables load balancing for EBGP routes that have different AS_PATH attributes of the same length.

ibgp: Enables load balancing for IBGP routes that have different AS_PATH attributes of the same length.

Usage guidelines

For BGP to perform load balancing for routes with different AS_PATH attributes of the same length, you must use this command together with the balance command.

If you configure both the balance as-path-relax and balance as-path-neglect commands, the balance as-path-neglect command takes effect.

If you do not specify the ibgp or ebgp keyword when you execute this command, the following rules apply:

· BGP performs load balancing for EBGP routes that have different AS_PATH attributes of the same length.

· BGP performs load balancing for IBGP routes that have different AS_PATH attributes of the same length.

· BGP does not perform load balancing between EBGP and IBGP routes that have different AS_PATH attributes of the same length.

After this command is executed, BGP ignores the AS_PATH attributes in the routes for load balancing and changes the attributes of the advertised routes to those of the optimal route. This might cause routing loops. Therefore, use this command with caution.

Examples

# In BGP IPv4 unicast address family view, enable load balancing for EBGP routes that have different AS_PATH attributes of the same length.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] balance as-path-relax ebgp

balance igp-metric-ignore

Use balance igp-metric-ignore to enable BGP to use routes with different IGP metrics to the next hop for load balancing.

Use undo balance igp-metric-ignore to restore the default.

Syntax

balance igp-metric-ignore

undo balance igp-metric-ignore

Default

BGP cannot use routes with different IGP metrics to the next hop to implement load balancing.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

After you use the balance and balance igp-metric-ignore commands together, BGP will ignore the IGP metrics of routes and can use routes with different IGP metrics for load balancing.

Both the balance igp-metric-ignore and bestroute igp-metric-ignore commands can enable BGP to use routes with different IGP metrics for load balancing. The two commands are different as follows:

· The balance igp-metric-ignore command can be used only for load balancing. It does not change the rules of optimal route selection. BGP still compares the IGP metric value of each route during optimal route selection.

· The bestroute igp-metric-ignore command takes effect on optimal route selection and route selection for load balancing. With this command executed, BGP will ignore the IGP metric in both cases.

Examples

# In BGP IPv4 unicast address family view, enable BGP to use routes with different IGP metrics to the next hop for load balancing.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] balance igp-metric-ignore

Related commands

balance

bestroute igp-metric-ignore

bestroute as-path-neglect

Use bestroute as-path-neglect to configure BGP to ignore the AS_PATH attribute during optimal route selection.

Use undo bestroute as-path-neglect to restore the default.

Syntax

bestroute as-path-neglect

undo bestroute as-path-neglect

Default

BGP considers the AS_PATH attribute during optimal route selection.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Examples

# In BGP instance view, ignore AS_PATH during optimal route selection.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bestroute as-path-neglect

bestroute compare-med

Use bestroute compare-med to enable MED comparison for routes on a per-AS basis.

Use undo bestroute compare-med to restore the default.

Syntax

bestroute compare-med

undo bestroute compare-med

Default

MED comparison for routes on a per-AS basis is disabled.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

By default, BGP does not compare MEDs for routes from the same AS. When a router learns a new route, it compares the route with the optimal route in its BGP routing table. If the new route is more optimal, it becomes the optimal route in the BGP routing table. In this way, route learning sequence might affect optimal route selection.

To solve the selection problem, the router puts routes received from the same AS into a group when the bestroute compare-med command is configured. The router then selects the route with the lowest MED from the same group, and compares routes from different groups.

Examples

# In BGP instance view, enable MED comparison for routes on a per-AS basis.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bestroute compare-med

bestroute igp-metric-ignore

Use bestroute igp-metric-ignore to configure BGP to ignore IGP metrics during optimal route selection.

Use undo bestroute igp-metric-ignore to restore the default.

Syntax

bestroute igp-metric-ignore

undo bestroute igp-metric-ignore

Default

BGP considers IGP metrics during optimal route selection, and selects the route with the smallest IGP metric as the optimal route.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Both the balance igp-metric-ignore and bestroute igp-metric-ignore commands can enable BGP to use routes with different IGP metrics for load balancing. The two commands are different as follows:

· The bestroute igp-metric-ignore command takes effect on optimal route selection and route selection for load balancing. With this command executed, BGP will ignore the IGP metric in both cases.

Examples

# In BGP instance view, ignore IGP metrics during optimal route selection.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bestroute igp-metric-ignore

Related commands

balance

balance igp-metric-ignore

bestroute ipv6-nexthop

Use bestroute ipv6-nexthop to enable BGP to prefer routes with an IPv6 next hop during optimal route selection.

Use undo bestroute ipv6-nexthop to restore the default.

Syntax

bestroute ipv6-nexthop

undo bestroute ipv6-nexthop

Default

BGP prefers routes with an IPv4 next hop during optimal route selection.

Views

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Execute this command for the VXLAN packets in an EVPN network to be forwarded through IPv6 routes when both IPv4 and IPv6 routes exist.

Examples

# In BGP EVPN address family view, enable BGP to prefer routes with an IPv6 next hop during optimal route selection.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family l2vpn evpn

[Sysname-bgp-default-evpn] bestroute ipv6-nexthop

bestroute med-confederation

Use bestroute med-confederation to enable MED comparison for routes received from confederation peers.

Use undo bestroute med-confederation to restore the default.

Syntax

bestroute med-confederation

undo bestroute med-confederation

Default

MED comparison is disabled for routes received from confederation peers.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command enables BGP to compare the MEDs of routes received from confederation peers. However, if a route from a confederation peer has an AS number that does not belong to the confederation, BGP does not compare the route with other routes. For example, a confederation has three AS numbers 65006, 65007, and 65009. BGP receives three routes from different confederation peers. The AS_PATH attributes of these routes are 65006 65009, 65007 65009, and 65008 65009, and the MED values of them are 2, 3, and 1. Because the third route's AS_PATH attribute contains AS number 65008, which does not belong to the confederation, BGP does not compare it with other routes. As a result, the first route becomes the optimal route.

Examples

# In BGP instance view, enable MED comparison for routes received from confederation peers.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bestroute med-confederation

bestroute origin-as-validation

Use bestroute origin-as-validation to apply the BGP RPKI validation state to optimal route selection.

Use undo bestroute origin-as-validation to restore the default.

Syntax

bestroute origin-as-validation [ allow-invalid ]

undo bestroute origin-as-validation

Default

BGP ignores the BGP RPKI validation state during optimal route selection.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

allow-invalid: Allows routes with a validation state of Invalid to participate in optimal route selection. If you do not specify this keyword, routes with a validation state of Invalid cannot participate in optimal route selection.

Usage guidelines

If multiple routes to the same destination are available, BGP first discards routes with unreachable next hops, and then selects the optimal route according to the following rules:

· Routes with a BGP RPKI validation state of Valid takes precedence over routes with a validation state of Not-found or Invalid.

· Routes with a BGP RPKI validation state of Not-found takes precedence over routes with a validation state of Invalid.

· Routes without a BGP RPKI validation state have the same priority as routes with a BGP RPKI validation state of Not-found.

Examples

# In BGP IPv4 unicast address family view, apply the BGP RPKI validation state to optimal route selection.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] bestroute origin-as-validation

bestroute router-id-ignore

Use bestroute router-id-ignore to configure BGP to ignore router IDs during optimal route selection.

Use undo bestroute router-id-ignore to restore the default.

Syntax

bestroute router-id-ignore

undo bestroute router-id-ignore

Default

By default, BGP compares router IDs during optimal route selection. If multiple routes to the same destination are available, BGP selects the route with the smallest router ID as the optimal route.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Examples

# In BGP instance view, configure BGP to ignore router IDs during optimal route selection.

<Sysname> system-view

[Sysname] bgp 1

[Sysname-bgp-default] bestroute router-id-ignore

Related commands

bestroute as-path-neglect

bestroute igp-metric-ignore

bgp

Use bgp to enable a BGP instance and enter its view.

Use undo bgp to disable a BGP instance.

Syntax

bgp as-number [ instance instance-name ]

undo bgp [ as-number [ instance instance-name ] ]

Default

BGP is disabled and no BGP instances exist.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

as-number: Specifies a local AS by its number in the range of 1 to 4294967295.

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command enables the BGP instance default.

Usage guidelines

A router supports 4-byte AS number.

A BGP router can run multiple BGP processes. Each BGP process corresponds to a BGP instance. BGP maintains an independent routing table for each BGP instance.

You can create multiple public address families for a BGP instance. However, each public address family (except for IPv4 unicast address family, IPv6 unicast address family, VPNv4 address family, VPNv6 address family, and IPv4 RT-filter address family) can belong to only one BGP instance.

You can create multiple VPN instances for a BGP instance, and each VPN instance can have multiple address families. A VPN instance can belong to only one BGP instance.

On the public network, a peer address can establish a session to only one BGP instance. Multiple BGP instances cannot synchronously establish sessions to the same peer address.

The IPv4 and IPv6 multicast address families must belong to the same BGP instance.

Different BGP instances can have the same AS number but cannot have the same name.

Examples

# Enable BGP instance default, set the local AS number to 100, and enter BGP instance view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default]

bgp apply-policy on-startup duration

Use bgp apply-policy on-startup duration to specify the period after reboot within which the startup policy is effective.

Use undo bgp apply-policy on-startup duration to restore the default.

Syntax

bgp apply-policy on-startup duration seconds

undo bgp apply-policy on-startup duration

Default

The startup policy does not take effect.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

seconds: Specifies the period after reboot within which the startup policy is effective, in the range of 0 to 3600 seconds. The number of 0 indicates that the startup policy is effective permanently.

Usage guidelines

This command allows BGP to send route updates with the attribute values specified in the startup policy within the specified period after reboot. Then, BGP can forward traffic through other devices to avoid traffic loss caused by reboot.

Examples

# In BGP instance view, set the period after reboot to 100 seconds within which the startup policy is effective.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bgp apply-policy on-startup duration 100

Related commands

bgp policy on-startup med

Use bgp policy on-startup med to set the MED attribute value in the startup policy.

Use undo bgp policy on-startup med to restore the default.

Syntax

bgp policy on-startup med med-value

undo bgp policy on-startup med

Default

The MED attribute value in the startup policy is 4294967295.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

med-value: Specifies the MED attribute value in the startup policy, in the range of 0 to 4294967295.

Usage guidelines

After you configure this command, BGP uses the specified MED attribute value to send route updates within the specified period after reboot.

Examples

# In BGP instance view, set the MED attribute value in the startup policy to 100.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bgp policy on-startup med 100

Related commands

bgp apply-policy on-startup

bgp update-delay on-startup

Use bgp update-delay on-startup to configure BGP to delay sending route updates when it restores after a device reboot.

Use undo bgp update-delay on-startup to restore the default.

Syntax

bgp update-delay on-startup seconds

undo bgp update-delay on-startup

Default

BGP sends route updates immediately to BGP peers in established state when it restores after a device reboot.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

seconds: Specifies the delay time in the range of 0 to 3600 seconds. The value of 0 indicates that BGP does not send any route updates.

Usage guidelines

With this feature enabled, BGP delays sending route updates when it restores after a device reboot. During the delay time, BGP learns all routes from other neighbors, and then selects the optimal route. After the delay time elapses, BGP will advertise the optimal route. Using this feature can reduce traffic loss caused by device reboot.

For BGP EVPN routes, this feature takes effect only on IP prefix routes and MAC/IP advertisement routes that carry IP routing information.

Examples

# In BGP instance view, configure BGP to delay sending route updates when it restores after a device reboot, and set the delay time to 100 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bgp update-delay on-startup 100

Related commands

bgp update-delay on-startup prefix-list

bgp update-delay on-startup ipv6-prefix-list

Use bgp update-delay on-startup ipv6-prefix-list to configure BGP to immediately send route updates for routes that match an IPv6 prefix list.

Use undo bgp update-delay on-startup ipv6-prefix-list to restore the default.

Syntax

bgp update-delay on-startup ipv6-prefix-list ipv6-prefix-list-name

undo bgp update-delay on-startup ipv6-prefix-list

Default

No IPv6 prefix list is specified to filter routes.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv6-prefix-list-name: Specifies an IPv6 prefix list by its name, a case-sensitive string of 1 to 63 characters.

Usage guidelines

After the bgp update-delay on-startup command is configured, BGP delays sending updates for all routes when it restores after a device reboot. For BGP to immediately send updates for the specified routes, execute the bgp update-delay on-startup ipv6-prefix-list command.

Examples

# In BGP instance view, configure BGP to send updates 100 seconds after it restores from a device reboot, and immediately send updates for routes that match IPv6 prefix list bbb.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bgp update-delay on-startup 100

[Sysname-bgp-default] bgp update-delay on-startup ipv6-prefix-list bbb

Related commands

bgp update-delay on-startup

bgp update-delay on-startup prefix-list

Use bgp update-delay on-startup prefix-list to configure BGP to immediately send route updates for routes that match an IPv4 prefix list.

Use undo bgp update-delay on-startup prefix-list to restore the default.

Syntax

bgp update-delay on-startup prefix-list ipv4-prefix-list-name

undo bgp update-delay on-startup prefix-list

Default

No IPv4 prefix list is specified to filter routes.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-prefix-list-name: Specifies an IPv4 prefix list by its name, a case-sensitive string of 1 to 63 characters.

Usage guidelines

Examples

# In BGP instance view, configure BGP to send updates 100 seconds after it restores from a device reboot, and immediately send updates for routes that match IPv4 prefix list aaa.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bgp update-delay on-startup 100

[Sysname-bgp-default] bgp update-delay on-startup prefix-list aaa

Related commands

bgp update-delay on-startup

bgp update-delay wait-other-protocol

Use bgp update-delay wait-other-protocol to configure the time that BGP must wait for other protocols to complete GR or NSR after BGP completes GR or NSR.

Use undo bgp update-delay wait-other-protocol to restore the default.

Syntax

bgp update-delay wait-other-protocol seconds

undo bgp update-delay wait-other-protocol

Default

After BGP completes GR or NSR, it must wait a maximum of 300 seconds for other protocols to complete GR or NSR.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

seconds: Specifies the time that BGP must wait for other protocols to complete GR or NSR after BGP completes GR or NSR. The value range is 60 to 1200 seconds.

Usage guidelines

When the following conditions exist, BGP might advertise incomplete routes after completing GR or NSR:

· The routes rely on other protocols, for example, redistributed OSPF routes. Those protocols are configured with GR or NSR correctly.

· BGP maintains a large amount of routing information. In this case, BGP and the protocols take a long time to complete GR or NSR.

For BGP to correctly advertise the routes after BGP and the protocols complete GR or NSR, set a larger wait timer for BGP.

Examples

# Configure BGP to wait a maximum of 600 seconds for other protocols to complete GR or NSR after BGP completes GR or NSR.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bgp update-delay wait-other-protocol 600

Related commands

bgp update-delay on-startup

bmp server

Use bmp server to create a BGP monitoring protocol (BMP) server and enter BMP server view.

Use undo bmp server to remove a BMP server and all its configurations.

Syntax

bmp server server-number

undo bmp server server-number

Default

No BMP servers exist.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

server-number: Specifies a BMP server by its number in the range of 1 to 8.

Examples

# Create BMP server 5 and enter its view.

<Sysname> system-view

[Sysname] bmp server 5

[Sysname-bmpserver-5]

bmp server monitor all-vpn-instance

Use bmp server monitor all-vpn-instance to enable the specified BMP server to monitor all peers in all BGP-VPN instances.

Use undo bmp server monitor all-vpn-instance to remove the configuration.

Syntax

bmp server server-number monitor all-vpn-instance [ route-mode { adj-rib-in { pre-policy | post-policy | both } | adj-rib-out { pre-policy | post-policy | both } } * ]

undo bmp server server-number monitor all-vpn-instance [ route-mode { adj-rib-in { pre-policy | post-policy | both } | adj-rib-out { pre-policy | post-policy | both } } * ]

Default

A BMP server cannot monitor the peers in a BGP-VPN instance.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

server-number: Specifies a BMP server by its number in the range of 1 to 8. The BMP server must have been created.

route-mode: Sends routes exchanged with a monitored peer or peer group to the BMP server. If you do not specify this keyword, BGP determines whether to send routes exchanged with a peer or peer group to the BMP server based on the following commands:

· peer route-mode

· bmp server monitor current-instance

· route-mode adj-rib-in

· route-mode adj-rib-out

adj-rib-in: Sends routes received from the monitored peer or peer group to the BMP server.

adj-rib-out: Sends routes advertised to the monitored peer or peer group to the BMP server.

pre-policy: Sends routes to the BMP server without route filtering.

post-policy: Sends routes to the BMP server after route filtering.

both: Sends both filtered and unfiltered routes to the BMP server.

Usage guidelines

For a BGP peer, the following rules apply when BGP selects a BMP server:

· The BMP server specified by the peer bmp server command takes precedence over that specified by the bmp server monitor current-instance command.

· The BMP server specified by the bmp server monitor current-instance command takes precedence over that specified by the bmp server monitor all-vpn-instance command.

For a BGP peer, the following rules apply when BGP determines the type of routes to send to the BMP server:

· The route type specified by the peer route-mode command takes precedence over that specified by the bmp server monitor current-instance route-mode command.

· The route type specified by the bmp server monitor current-instance route-mode command takes precedence over that specified by the bmp server monitor all-vpn-instance route-mode command.

· The route type specified by the bmp server monitor all-vpn-instance route-mode command takes precedence over that specified by the route-mode adj-rib-out or route-mode adj-rib-out command.

If you execute this command multiple times for a BGP instance, the most recent configuration takes effect.

Examples

# Enable BMP server 1 to monitor all BGP peers in all BGP-VPN instances.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bmp server 1 monitor all-vpn-instance

Related commands

display bgp bmp server

peer bmp server

peer route-mode

route-mode adj-rib-in

route-mode adj-rib-out

bmp server monitor current-instance

Use bmp server monitor current-instance to enable the specified BMP server to monitor all peers in the current instance.

Use undo bmp server monitor current-instance to remove the configuration.

Syntax

bmp server server-number monitor current-instance [ route-mode { adj-rib-in { pre-policy | post-policy | both } | adj-rib-out { pre-policy | post-policy | both } } * ]

undo bmp server server-number monitor current-instance [ route-mode { adj-rib-in { pre-policy | post-policy | both } | adj-rib-out { pre-policy | post-policy | both } } * ]

Default

A BMP server cannot monitor the peers in the current instance.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

server-number: Specifies a BMP server by its number in the range of 1 to 8. The BMP server must have been created.

· peer route-mode

· bmp server monitor all-vpn-instance

· route-mode adj-rib-in

· route-mode adj-rib-out

adj-rib-in: Sends routes received from the monitored peer or peer group to the BMP server.

adj-rib-out: Sends routes advertised to the monitored peer or peer group to the BMP server.

pre-policy: Sends routes to the BMP server without route filtering.

post-policy: Sends routes to the BMP server after route filtering.

both: Sends both filtered and unfiltered routes to the BMP server.

Usage guidelines

To enable a BMP server to monitor all BGP peers in the public network, execute this command in BGP instance view. To enable a BMP server to monitor all BGP peers in a VPN instance, execute this command in BGP-VPN instance view.

For a BGP peer, the following rules apply when BGP selects a BMP server:

· The BMP server specified by the peer bmp server command takes precedence over that specified by the bmp server monitor current-instance command.

· The BMP server specified by the bmp server monitor current-instance command takes precedence over that specified by the bmp server monitor all-vpn-instance command.

For a BGP peer, the following rules apply when BGP determines the type of routes to send to the BMP server:

· The route type specified by the peer route-mode command takes precedence over that specified by the bmp server monitor current-instance route-mode command.

· The route type specified by the bmp server monitor current-instance route-mode command takes precedence over that specified by the bmp server monitor all-vpn-instance route-mode command.

· The route type specified by the bmp server monitor all-vpn-instance route-mode command takes precedence over that specified by the route-mode adj-rib-out or route-mode adj-rib-out command.

If you execute this command multiple times for an instance, the most recent configuration takes effect.

Examples

# Enable BMP server 1 to monitor all BGP peers in the public network and VPN instance vpn1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] bmp server 1 monitor current-instance

[Sysname-bgp-default] ip vpn-instance vpn1

[Sysname-bgp-default-vpn1] bmp server 1 monitor current-instance

Related commands

display bgp bmp server

peer bmp server

peer route-mode

route-mode adj-rib-in

route-mode adj-rib-out

bmp server monitor all-vpn-instance

check-origin-validation

Use check-origin-validation to enable BGP RPKI validation.

Use undo check-origin-validation to disable BGP RPKI validation.

Syntax

check-origin-validation

undo check-origin-validation

Default

BGP RPKI validation is disabled.

Views

BGP RPKI view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command enables BGP to validate the prefix and origin AS number of a received route and place the route to one of the following validation states:

· Not-found—No ROA matches the prefix.

· Valid—One or multiple ROAs match both the prefix and origin AS number.

· Invalid—One or multiple ROAs match the prefix, but none of these ROAs matches the origin AS number.

You can configure a routing policy to filter routes based on the BGP RPKI validation state.

Examples

# Enable BGP RPKI validation.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] rpki

[Sysname-bgp-default-rpki] check-origin-validation

compare-different-as-med

Use compare-different-as-med to enable MED comparison for routes from peers in different ASs.

Use undo compare-different-as-med to restore the default.

Syntax

compare-different-as-med

undo compare-different-as-med

Default

MED comparison is disabled for routes from peers in different ASs.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

If multiple routes to a destination exist, the route with the smallest MED is selected.

Do not use this command unless relevant ASs adopt the same IGP protocol and routing selection method.

Examples

# In BGP instance view, enable MED comparison for routes from peers in different ASs.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] compare-different-as-med

confederation id

Use confederation id to configure a confederation ID.

Use undo confederation id to restore the default.

Syntax

confederation id as-number

undo confederation id

Default

No confederation ID is configured.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

as-number: Specifies an AS number that identifies the confederation, in the range of 1 to 4294967295.

Usage guidelines

You can split an AS into several sub-ASs, and each sub-AS remains fully meshed. These sub-ASs form a confederation. Key path attributes of a route, such as the Next_HOP, MED, and LOCAL_PREF, are not discarded when crossing each sub-AS. The sub-ASs still look like one AS from the perspective of other ASs. The AS number is the confederation ID.

Confederation can ensure the integrity of the former AS, and solve the problem of too many IBGP connections in the AS.

Configure the same confederation ID for all routers in one confederation.

For a non-confederation BGP router that establishes a BGP connection to a router in a confederation, the confederation ID is the AS number of the router.

Examples

# Confederation 9 consists of four sub-ASs numbered 38, 39, 40 and 41. Peer 10.1.1.1 is a member of sub-AS 38. Peer 200.1.1.1 is a member outside of confederation 9, which belongs to AS 98. Confederation 9 looks like one AS (with AS number 9) from the perspective of peer 200.1.1.1. This example uses a router in sub-AS 41.

<Sysname> system-view

[Sysname] bgp 41

[Sysname-bgp-default] confederation id 9

[Sysname-bgp-default] confederation peer-as 38 39 40

[Sysname-bgp-default] group Confed38 external

[Sysname-bgp-default] peer Confed38 as-number 38

[Sysname-bgp-default] peer 10.1.1.1 group Confed38

[Sysname-bgp-default] group Remote98 external

[Sysname-bgp-default] peer Remote98 as-number 98

[Sysname-bgp-default] peer 200.1.1.1 group Remote98

Related commands

confederation nonstandard

confederation peer-as

confederation nonstandard

Use confederation nonstandard to enable compatibility with routers not compliant with RFC 3065 in the confederation.

Use undo confederation nonstandard to restore the default.

Syntax

confederation nonstandard

undo confederation nonstandard

Default

The device is compatible with only routers compliant with RFC 3065 in the confederation.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Configure this command on all routers compliant with RFC 3065 to interact with those routers not compliant with RFC 3065 in the confederation.

Examples

# Confederation 100 consists of two sub-ASs, 64000 and 65000, and contains routers not compliant with RFC 3065. Enable compatibility with routers not compliant with RFC 3065 in the confederation.

<Sysname> system-view

[Sysname] bgp 64000

[Sysname-bgp-default] confederation id 100

[Sysname-bgp-default] confederation peer-as 65000

[Sysname-bgp-default] confederation nonstandard

Related commands

confederation id

confederation peer-as

Use confederation peer-as to specify confederation peer sub-ASs.

Use undo confederation peer-as to remove the specified confederation peer sub-ASs.

Syntax

confederation peer-as as-number-list

undo confederation peer-as [ as-number-list ]

Default

No confederation peer sub-ASs are specified.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

as-number-list: Specifies a sub-AS number list. A maximum of 32 sub-ASs can be configured in one command line. The expression is as-number-list = as-number &<1-32>. The as-number argument specifies a sub-AS number in the range of 1 to 4294967295, and &<1-32> indicates that a maximum of 32 numbers can be specified.

Usage guidelines

Before this configuration, use the confederation id command to specify the confederation ID for the sub-ASs.

If the undo confederation peer-as command is executed without the as-number-list argument, all confederation peer sub-ASs are removed.

Examples

# In BGP instance view, specify confederation peer sub-ASs 2000 and 2001.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] confederation id 10

[Sysname-bgp-default] confederation peer-as 2000 2001

Related commands

confederation id

confederation nonstandard

dampening

Use dampening to enable BGP route dampening.

Use undo dampening to restore the default.

Syntax

dampening [ half-life-reachable half-life-unreachable reuse suppress ceiling | route-policy route-policy-name ] *

undo dampening

Default

Route dampening is disabled.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

half-life-reachable: Specifies a half-life for active routes, in the range of 1 to 45 minutes. By default, the value is 15 minutes.

half-life-unreachable: Specifies a half-life for suppressed routes, in the range of 1 to 45 minutes. By default, the value is 15 minutes.

reuse: Specifies a reuse threshold value for suppressed routes, in the range of 1 to 20000. A suppressed route whose penalty value decreases under the value is reused. By default, the reuse value is 750. The reuse threshold must be less than the suppression threshold.

suppress: Specifies a suppression threshold in the range of 1 to 20000. The route with a penalty value greater than the threshold is suppressed. The default value is 2000.

ceiling: Specifies a ceiling penalty value in the range of 1001 to 20000. The value must be greater than the suppress value. By default, the value is 16000.

route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters.

Usage guidelines

This command dampens only EBGP routes.

If an EBGP peer goes down after you configure this command, routes coming from the peer are dampened but not deleted.

Examples

# In BGP IPv4 unicast address family view, configure BGP route dampening. Set the half-life for both active and suppressed routes to 10 minutes, the reuse threshold to 1000, the suppression threshold to 2000, and the ceiling penalty to 10000.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] dampening 10 10 1000 2000 10000

Related commands

display bgp dampening parameter

default local-preference

Use default local-preference to configure a default local preference.

Use undo default local-preference to restore the default.

Syntax

default local-preference value

undo default local-preference

Default

The default local preference is 100.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

value: Specifies a default local preference in the range of 0 to 4294967295. A larger value represents a higher preference.

Usage guidelines

You can also use the apply local-preference command in a routing policy to configure the local preference for BGP routes. If no routing policy is configured, all BGP routes use the local preference set by the default local-preference command. If a routing policy is configured, BGP routes matching the routing policy use the local preference set by the apply local-preference command. Other BGP routes use the local preference set by the default local-preference command.

Examples

# In BGP IPv4 unicast address family view, set the default local preference to 180.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] default local-preference 180

Related commands

apply local-preference

route-policy

default med

Use default med to specify a default MED value.

Use undo default med to restore the default.

Syntax

default med med-value

undo default med

Default

The default MED value is 0.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

med-value: Specifies the default MED value in the range of 0 to 4294967295.

Usage guidelines

BGP selects a MED value in the following order:

1. MED set by the apply cost command.

2. MED set by the med keyword in the import-route command.

3. MED set by the default med command.

4. Original MED of a BGP route, or MED changed from the metric of a redistributed IGP route.

Examples

# In BGP IPv4 unicast address family view, set the default MED to 25.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] default med 25

Related commands

apply cost

import-route

route-policy

default-route imported

Use default-route imported to enable default route redistribution into the BGP routing table.

Use undo default-route imported to restore the default.

Syntax

default-route imported

undo default-route imported

Default

Default route redistribution into the BGP routing table is disabled.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

By default, BGP does not redistribute default IGP routes. To redistribute default IGP routes into the BGP routing table, you must use the default-route imported command together with the import-route command.

Examples

# In BGP IPv4 unicast address family view, enable default route redistribution from OSPF process 1 into the BGP routing table.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] default-route imported

[Sysname-bgp-default-ipv4] import-route ospf 1

Related commands

import-route

default-route update-first

Use default-route update-first to configure BGP to send withdrawal messages of the default route prior to other routes.

Use undo default-route update-first to restore the default.

Syntax

default-route update-first

undo default-route update-first

Default

BGP does not send withdrawal messages of the default route prior to other routes.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Typically a BGP router does not send withdrawal messages of the default route prior to other routes to its peers. If the peer relationship is down, the default route cannot be withdrawn first. Traffic interruption might occur. Use this command to configure BGP to send the withdrawal messages of the default route prior to other routes. This can reduce the traffic interruption time when the peer relationship is down.

Examples

# In BGP instance view, configure BGP to send withdrawal messages of the default route prior to other routes.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] default-route update-first

display bgp bmp server

Use display bgp bmp server to display BMP server information.

Syntax

display bgp [ instance instance-name ] bmp server server-number

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BMP server information for the default BGP instance.

server-number: Specifies a BMP server by its number in the range of 1 to 8.

Examples

# Display information about BMP server 1.

<Sysname> display bgp bmp server 1

BMP server number: 1

Server VPN instance name: vpna

Server address: 100.1.1.1 Server port: 6895

Client address: 100.1.1.2 Client port: 21452

BMP server state: Connected Up for 00h41m53s

TCP source interface has been configured

Statistics report interval: 5s

Reported route mode: adj-rib-in pre-policy

Pu-monitor-mode: Enabled

Pd-monitor-mode: Enabled

Message statistics:

Total messages sent: 15

INITIATION: 1

TERMINATION: 0

STATS-REPORT: 0

PEER-UP: 4

PEER-DOWN: 3

ROUTE-MON: 7

BGP peers monitored by BMP server:

10.1.1.1

Table 3 Command output

Field	Description
Server VPN instance name	Name of the VPN instance to which the BMP server belongs. If the VPN instance has been deleted, this field displays (Deleted). If the BMP server belongs to the public network, this field displays --.
Server address	IP address of the BMP server used by the TCP connection to the BMP client.
Server port	Port number of the BMP server used by the TCP connection to the BMP client.
Client address	IP address of the BMP client used by the TCP connection to the BMP server.
Client port	Port number of the BMP client used by the TCP connection to the BMP server.
BMP server current state	TCP connection status: · Connected. · Not connected.
Up for	Duration of the TCP connection.
TCP source interface has been configured	Source interface of TCP connections to the BMP server.
Statistics report interval	Interval (in seconds) at which BGP sends statistics information to the BMP server.
Reported route mode	Type of routes that BGP sends to the BMP server: · adj-rib-in—Send routes received from the monitored peer or peer group to the BMP server. · adj-rib-out—Send routes advertised to the monitored peer or peer group to the BMP server. · pre-policy—Send routes to the BMP server without route filtering. · post-policy—Send routes to the BMP server after route filtering. · both—Send both filtered and unfiltered routes to the BMP server. · loc-rib—Send the optimal routes in the routing table to the BMP server.
Pu-monitor-mode	Whether the peer up notifications that the BMP client sends to the BMP server carry the mode flag. · Enabled—Carry the mode flag. · Disabled—Do not carry the mode flag.
Pd-monitor-mode	Whether the peer down notifications that the BMP client sends to the BMP server carry the mode flag. · Enabled—Carry the mode flag. · Disabled—Do not carry the mode flag.
Total messages sent	Number of messages that BGP sends to the BMP server.
INITIATION	Number of initiation messages that BGP sends to the BMP server.
TERMINATION	Number of termination messages that BGP sends to the BMP server.
STATS-REPORT	Number of statistics messages that BGP sends to the BMP server.
PEER-UP	Number of peer-up messages that BGP sends to the BMP server.
PEER-DOWN	Number of peer-down messages that BGP sends to the BMP server.
ROUTE-MON	Number of route monitoring messages that BGP sends to the BMP server.
BGP peers monitored by BMP server	Peers that are monitored by the BMP server.

‌

Related commands

reset bgp bmp server statistics

display bgp bmp server monitor-peer

Use display bgp bmp server monitor-peer to display information about BGP peers monitored by the specified BMP server for the specified BGP instance.

Syntax

display bgp [ instance instance-name ] bmp server server-number monitor-peer all

display bgp [ instance instance-name ] bmp server server-number monitor-peer [ vpn-instance vpn-instance-name ] { ipv4 | ipv6 } { ipv4-address | ipv6-address }

display bgp [ instance instance-name ] bmp server server-number monitor-peer { l2vpn evpn | vpnv4 | vpnv6 } { ipv4-address | ipv6-address }

display bgp [ instance instance-name ] bmp server server-number monitor-peer vpn-instance vpn-instance-name vpnv4 ipv4-address

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays information for the default BGP instance.

server-number: Specifies a BMP server by its number in the range of 1 to 8. The BMP server must have been created.

all: Displays information about all BGP peers monitored by the specified BMP server.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command displays information for the public network.

ipv4: Displays information about monitored BGP peers in IPv4 unicast address family.

ipv6: Displays information about monitored BGP peers in IPv6 unicast address family.

l2vpn evpn: Displays information about monitored BGP peers in BGP EVPN address family.

vpnv4: Displays information about monitored BGP peers in VPNv4 address family.

vpnv6: Displays information about monitored BGP peers in VPNv6 address family.

ipv4-address: Specifies a peer by its IPv4 address.

ipv6-address: Specifies a peer by its IPv6 address.

Examples

# Display information about BGP peers monitored by BMP server 1 for the default BGP instance.

<Sysname> display bgp bmp server 1 monitor-peer all

Server address:1.1.1.1 Server state:Down

>>BGP IPv4 unicast:

Peer Route mode

10.1.1.1 adj-rib-in post-policy

>>BGP IPv6 unicast:

Peer Route mode

20.1.1.1 adj-rib-in post-policy

>>BGP VPNv4:

Peer Route mode

30.1.1.1 adj-rib-in post-policy

>>BGP VPNv6:

Peer Route mode

40.1.1.1 adj-rib-in post-policy

>>BGP IPv4 unicast VPN instance vpn1:

Peer Route mode

11.1.1.1 adj-rib-in post-policy

12.1.1.1 adj-rib-in post-policy

>>BGP EVPN:

Peer Route mode

50.1.1.1 adj-rib-in post-policy

# Display information about IPv6 unicast peers monitored by BMP server 1 for the public instance.

<Sysname> display bgp bmp server 1 monitor-peer ipv6 20.1.1.1

Server address:1.1.1.1 Server state:Down

>>BGP IPv6 unicast:

Peer Route mode

20.1.1.1 adj-rib-in post-policy

# Display information about VPNv4 peers monitored by BMP server 1.

<Sysname> display bgp bmp server 1 monitor-peer vpnv4 30.1.1.1

Server address:1.1.1.1 Server state:Down

>>BGP VPNv4:

Peer Route mode

30.1.1.1 adj-rib-in post-policy

# Display information about VPNv6 peers monitored by BMP server 1.

<Sysname> display bgp bmp server 1 monitor-peer vpnv6 40.1.1.1

Server address:1.1.1.1 Server state:Down

>>BGP VPNv6:

Peer Route mode

40.1.1.1 adj-rib-in post-policy

# Display information about BGP EVPN peers monitored by BMP server 1.

<Sysname> display bgp bmp server 1 monitor-peer l2vpn evpn 50.1.1.1

Server address:1.1.1.1 Server state:Down

>>BGP EVPN:

Peer Route mode

50.1.1.1 adj-rib-in post-policy

Table 4 Command output

Field	Description
Server address	IP address of the BMP server.
Server state	State of the TCP connection to the BMP server.
BGP IPv4 unicast	BGP IPv4 unicast address family.
BGP IPv6 unicast	BGP IPv6 unicast address family.
BGP IPv4 unicast VPN instance	BGP-VPN instance IPv4 unicast address family.
BGP IPv6 unicast VPN instance	BGP-VPN instance IPv6 unicast address family.
BGP VPNv4	BGP VPNv4 address family.
BGP VPNv6	BGP VPNv6 address family.
BGP VPNv4 VPN instance	BGP-VPN instance VPNv4 address family.
BGP EVPN	BGP EVPN address family.
Peer	Address of the monitored peer.
Route mode	Type of routes that BGP sends to the BMP server: · adj-rib-in—Send routes received from the monitored peer to the BMP server. · adj-rib-out—Send routes advertised to the monitored peer to the BMP server. · pre-policy—Send routes to the BMP server without route filtering. · post-policy—Send routes to the BMP server after route filtering. · both—Send both filtered and unfiltered routes to the BMP server.

‌

Related commands

display bgp bmp server

reset bgp bmp server statistics

reset bgp bmp server

peer route-mode

route-mode adj-rib-in

route-mode adj-rib-out

route-mode loc-rib

display bgp dampening parameter

Use display bgp dampening parameter to display BGP route dampening parameters.

Syntax

display bgp [ instance instance-name ] dampening parameter { ipv4 | ipv6 } [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ]

display bgp [ instance instance-name ] dampening parameter vpnv4

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP route dampening parameters for the default BGP instance.

ipv4: Displays BGP IPv4 route dampening parameters.

ipv6: Displays BGP IPv6 route dampening parameters.

vpnv4: Displays IBGP VPNv4 route dampening parameters.

multicast: Displays BGP multicast route dampening parameters.

unicast: Displays BGP unicast route dampening parameters.

Usage guidelines

By default, the unicast keyword is used if neither the multicast keyword nor the unicast keyword is specified.

Examples

# Display BGP IPv4 unicast route dampening parameters.

<Sysname> display bgp dampening parameter ipv4

Maximum suppression time (in seconds) : 3973

Ceiling value : 16000

Reuse value : 750

Half-life time for reachable routes (in seconds) : 900

Half-life time for unreachable routes (in seconds) : 900

Suppression threshold : 2000

Table 5 Command output

Field	Description
Maximum suppression time	Maximum time (in seconds) for the penalty value to decrease from the ceiling value to the reuse value.
Ceiling value	Penalty ceiling value.
Reuse value	Reuse threshold.

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Related commands

dampening

dampening ibgp (MPLS Command Reference)

display bgp group

Use display bgp group to display BGP peer group information.

Syntax

display bgp [ instance instance-name ] group ipv4 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ group-name group-name ]

display bgp [ instance instance-name ] group ipv6 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ group-name group-name ]

display bgp [ instance instance-name ] group link-state [ group-name group-name ]

display bgp [ instance instance-name ] group vpnv4 [ vpn-instance vpn-instance-name ] [ group-name group-name ]

display bgp [ instance instance-name ] group l2vpn evpn [ group-name group-name ]

display bgp [ instance instance-name ] group vpnv6 [ group-name group-name ]

display bgp [ instance instance-name ] group dedicated [ group-name group-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP peer group information for the default BGP instance.

ipv4: Displays IPv4 BGP peer group information.

ipv6: Displays IPv6 BGP peer group information.

link-state: Displays BGP LS peer group information.

multicast: Displays BGP multicast peer group information.

unicast: Displays BGP unicast peer group information.

vpnv4: Displays BGP VPNv4 peer group information.

l2vpnevpn: Displays BGP EVPN peer group information.

vpnv6: Displays BGP VPNv6 peer group information.

dedicated: Displays BGP dedicated peer group information.

group-name group-name: Specifies a BGP peer group by its name, a case-sensitive string of 1 to 47 characters. If you do not specify a group, this command displays brief information about all BGP peer groups for the specified address family.

Usage guidelines

By default, the unicast keyword is used if the unicast and multicast keywords are not specified.

Examples

# Display brief information about all BGP IPv4 unicast peer groups.

BGP peer group: group1

Remote AS: 600

Type: external

Members:

1.1.1.10

BGP peer group: group2

Remote AS number: not specified

Type: external

Members:

2.2.2.2

# Display detailed information about BGP IPv4 unicast peer group group1.

<Sysname> display bgp group ipv4 group-name group1

BGP peer group: group1

Remote AS: 600

Type: external

Maximum number of prefixes allowed: 4294967295

Threshold: 75%

Configured hold time: 180 seconds

Keepalive time: 60 seconds

Minimum time between advertisements: 30 seconds

Peer preferred value: 0

Site-of-Origin: Not specified

Routing policy configured:

No routing policy is configured

Members:

* - Dynamically created peer

Peer AS MsgRcvd MsgSent OutQ PrefRcv Up/Down State

1.1.1.10 600 0 0 0 0 00:00:55 Established

# Display detailed information about BGP IPv6 unicast peer group group2.

<Sysname> display bgp group ipv6 group-name group2

BGP peer group: group2

Remote AS: 600

Type: external

Maximum number of prefixes allowed: 4294967295

Threshold: 75%

Configured hold time: 180 seconds

Keepalive time: 60 seconds

Minimum time between advertisements: 30 seconds

Peer preferred value: 0

IPsec profile name: profile001

Site-of-Origin: Not specified

Routing policy configured:

No routing policy is configured

Members:

* - Dynamically created peer

Peer AS MsgRcvd MsgSent OutQ PrefRcv Up/Down State

2::2 600 0 0 0 0 00:00:45 Established

3::3 600 0 0 0 0 00:00:40 Established

Table 6 Command output

Field	Description
BGP peer group	Name of the BGP peer group.
Remote AS	AS number of the peer group.
Type	Type of the peer groups: · external—EBGP peer group. · internal—IBGP peer group.
Maximum number of prefixes allowed	Maximum number of routes allowed to learn from the peer.
Threshold	Percentage of received routes from the peer to maximum routes allowed to learn from the peer. If the percentage is reached, the system generates a log message.
Configured hold time	Configured hold interval in seconds.
Keepalive time	Keepalive interval in seconds.
Minimum time between advertisements	Minimum route advertisement interval in seconds.
Peer preferred value	Preferred value specified for routes from the peer.
Site-of-Origin	SoO for the peer group.
Routing policy configured	Routing policy configured for the peer group. If you do not specify a routing policy, this field displays No routing policy is configured.
Members	Information about peers included in the peer group.
* - Dynamically created peer	An asterisk (*) before a peer address indicates that the peer is a dynamic peer.
Peer	IPv4 or IPv6 address of the peer.
AS	AS number of the peer.
MsgRcvd	Number of messages received.
MsgSent	Number of messages sent.
OutQ	Number of messages to be sent.
PrefRcv	For the IPv4, IPv6, VPNv4, and VPNv6 address families, this field displays the number of prefixes received from the peer.
Up/Down	Lasting time of the current BGP session state.
State	Current state of the BGP session between the local router and the peer.
IPsec profile name	IPsec profile applied to the IPv6 BGP peer group.

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display bgp instance-info

Use display bgp instance-info to display information about all BGP instances.

Syntax

display bgp instance-info

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Examples

# Display information about all BGP instances.

<Sysname> display bgp instance-info

Total BGP instances: 3

BGP instance name AS

BGP1 100

BGP2 200

BGP3 300

Table 7 Command output

Field	Description
Total BGP instances	Number of BGP instances.
BGP instance name	BGP instance name.
AS	AS number of the BGP instance.

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display bgp link-state

Use display bgp link-state to display BGP LS information.

Syntax

display bgp [ instance instance-name ] link-state [ ls-prefix [ advertise-info | as-path | cluster-list ] | peer { ipv4-address | ipv6-address } { advertised | received } [ statistics ] | statistics ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP LS information for the default BGP instance.

advertise-info: Displays advertisement information for the specified LS prefix.

as-path: Displays AS_PATH attribute information for the specified LS prefix.

cluster-list: Displays CLUSTER_LIST attribute information for the specified LS prefix.

ls-prefix: Specifies an LS prefix. If you do not specify this argument, the command displays all BGP LS information.

ipv4-address: Specifies a peer by its IPv4 address.

ipv6-address: Specifies a peer by its IPv6 address.

advertised: Displays advertised LS information.

received: Displays received LS information.

statistics: Displays statistics about LS messages.

Usage guidelines

If you do not specify any parameters, this command displays brief BGP LS route information.

Examples

# Display brief BGP LS route information for the public network.

<Sysname> display bgp link-state

Total number of routes: 2

BGP local router ID is 1.1.2.1

Status codes: * - valid, > - best, d – dampened, h – history,

s – suppressed, S – stale, i - internal, e - external

a - additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Prefix codes: E link, V node, T IP reachable route, u/U unknown,

I Identifier, N local node, R remote node, L link, P prefix,

L1/L2 ISIS level-1/level-2, O OSPF, D direct, S static, B BGP

a area-ID, , l link-ID, t topology-ID, s ISO-ID,

c confed-ID/ASN, b bgp-identifier, r router-ID,

i if-address, n peer-address, o OSPF Route-type, p IP-prefix

d designated router address

* >e Network : [V][O][I0x0][N[c20][b1.1.1.2][a0.0.0.0][r1.1.1.2]]/376

NextHop : 1.1.1.2 LocPrf :

PrefVal : 0 OutLabel : NULL

MED :

Path/Ogn: 20i

* >e Network : [T][O][I0x0][N[c20][b1.1.1.2][a0.0.0.0][r1.1.1.2]][P[o0x1][p1.1.1.0/24]]/480

NextHop : 1.1.1.2 LocPrf :

PrefVal : 0 OutLabel : NULL

MED :

Path/Ogn: 20i

Table 8 Command output

Field	Description
Status codes	Status codes: · * – valid—Valid route. · > – best—Optimal route. · d - dampened—Dampened route. · h – history—History route. · s – suppressed—Suppressed route. · S – stale—Stale route. · i – internal—Internal route. · e – external—External route. · a - additional-path—Add-Path optimal route.
Prefix codes	Route status codes: · B – BGP. · E – link. · V – node. · T – IP reachable route. · u/U – unknown. · I – Identifier. · N – local node. · R – remote node. · L – link. · P – prefix. · L1/L2 – ISIS level-1/level-2. · O – OSPF. · D – direct. · S – static. · a – area-ID. · l – link-ID. · t – topology-ID. · s – ISO-ID. · c – confed-ID/ASN. · b – bgp-identifier. · r – router-ID. · i – if-address. · n – peer-address. · o – OSPF Route-type. · p – IP-prefix. · d – designated router address. · a - additional-path.
Origin	Origin of the route: · i – IGP—Originated in the AS. The origin of routes advertised with the network command is IGP. · e – EGP—Learned through EGP. · ? – incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Network	NLRI for the LS.
NextHop	Next hop IP address.
LocPrf	Local preference.
OutLabel	Outgoing label of the route.
MED	MED attribute.
Path/Ogn	AS_PATH and ORIGIN attributes of the route: · AS_PATH—Records the ASs the route has passed, which avoids routing loops. · ORIGIN—Identifies the origin of the route.

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# Display detailed BGP LS route information with the specified LS prefix.

<Sysname> display bgp link-state [V][O][I0x0][N[c20][b1.1.1.2][a0.0.0.0][r1.1.1.2]]/376

BGP local router ID: 1.1.1.2

Local AS number: 20

Paths: 1 available, 1 best

BGP LS information of [V][O][I0x0][N[c20][b1.1.1.2][a0.0.0.0][r1.1.1.2]]/376:

Imported route.

Original nexthop: 0.0.0.0

OutLabel : NULL

RxPathID : 0x0

TxPathID : 0xffffffff

LS : Node flag bits: 30[EA]

AS-path : (null)

Origin : igp

Attribute value : pref-val 32768

State : valid, local, best

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

# Display AS_PATH attribute information for the specified LS prefix.

<Sysname> display bgp link-state [V][O][I0x0][N[c20][b1.1.1.2][a0.0.0.0][r1.1.1.2]]/376 as-path

BGP local router ID: 1.1.1.2

Local AS number: 20

Paths: 1 available, 1 best

BGP LS information of [V][O][I0x0][N[c20][b1.1.1.2][a0.0.0.0][r1.1.1.2]]/376:

As-path: 100

# Display CLUSTER_LIST attribute information for the specified LS prefix.

<Sysname> display bgp link-state [V][O][I0x0][N[c20][b1.1.1.2][a0.0.0.0][r1.1.1.2]]/376 cluster-list

BGP local router ID: 1.1.1.2

Local AS number: 20

Paths: 1 available, 1 best

BGP LS information of [V][O][I0x0][N[c20][b1.1.1.2][a0.0.0.0][r1.1.1.2]]/376:

Cluster list: 100

Table 9 Command output

Field	Description
Paths	Number of routes: · available—Number of valid routes. · best—Number of optimal routes.
BGP LS information of	NLRI prefix.
Original nexthop	Original next hop of the route. If the route was obtained from a BGP update message, the original next hop is the next hop IP address in the message.
LS	LS attribute: · Node flag bits—Node attribute in hexadecimal format: ¡ 10[A]—OSPF ABR bit. ¡ 30[E]—OSPF External bit. · Metric—Link or prefix cost.
RxPathID	Add-path ID of received routes.
TxPathID	Add-path ID of advertised routes.
AS-path	AS_PATH attribute of the route, which records the ASs the route has passed and avoids routing loops.
Cluster list	CLUSTER_LIST attribute of the route.
Attribute value	BGP path attributes: · MED—MED value. · localpref—Local preference value. · pref-val—Preferred value. · pre—Route preference.
State	Current state of the route: · valid. · internal. · external. · local. · synchronize. · best.
IP precedence	IP precedence in the range of 0 to 7. N/A indicates that the route does not support this field.
QoS local ID	QoS local ID in the range of 1 to 4095. N/A indicates that the route does not support this field.
Traffic index	Traffic index in the range of 1 to 64. N/A indicates that the route does not support this field.

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# Display advertisement information for the specified LS prefix.

<Sysname> display bgp link-state [E][B][I0x0][N[r1.1.1.2]][c65008][R[r44.33.22.11]][c65009]][L[i2.1.1.3][n1.1.1.3]]/536 advertise-info

BGP local router ID: 1.1.1.2

Local AS number: 65008

Paths: 1 best

BGP LS information of [E][B][I0x0][N[r1.1.1.2]][c65008][R[r44.33.22.11]][c65009]][L[i2.1.1.3][n1.1.1.3]]/536

(TxPathID:0):

Advertised to peers (1 in total):

10.1.1.2

LS attribute :

Peer node segment identifier : Flag c0[VL], Metric 0, Label 23001

Table 10 Command output

Field	Description
Paths	Number of routes: · available—Number of valid routes. · best—Number of optimal routes.
BGP LS information of	NLRI prefix.
Advertised to peers (1 in total)	Peers to which the information has been advertised, and the total number of such peers.
Peer node segment identifier	This field is not supported in the current software version. Peer node SID: · Flag c0[VL]: ¡ V—Value flag. If set, the SID carries a label value. ¡ L—Local flag. If set, the SID has local significance. · Metric—Link cost. · Label—Label value.
TxPathID	Add-path ID of advertised routes.

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# Display BGP LS route statistics.

<Sysname> display bgp link-state statistics

Total number of routes: 1

Table 11 Command output

Field	Description
Total number of routes	Total number of routes.

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display bgp network

Use display bgp network to display information about routes advertised by the network command and shortcut routes configured by the network short-cut command.

Syntax

display bgp [ instance instance-name ] network { ipv4 | ipv6 } [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

ipv4: Displays IPv4 address family information.

ipv6: Displays IPv6 address family information.

multicast: Displays BGP multicast address family information.

unicast: Displays BGP unicast address family information.

Usage guidelines

By default, the unicast keyword is used if neither the multicast keyword nor the unicast keyword is specified.

Examples

# Display information about routes advertised by the network command and shortcut routes configured by the network short-cut command in the IPv4 unicast address family.

<Sysname> display bgp network ipv4

BGP local router ID: 192.168.1.135

Local AS number: 100

Network Mask Route-policy Short-cut

20.1.1.0 255.255.255.0 No

40.1.1.0 255.255.255.0 abc No

30.1.1.0 255.255.255.0 Yes

# Display information about routes advertised by the network command and shortcut routes configured by the network short-cut command in the IPv6 unicast address family.

<Sysname> display bgp network ipv6

BGP local router ID: 192.168.1.135

Local AS number: 100

Network PrefixLen Route-policy Short-cut

1:: 24 No

2:: 24 No

3:: 64 policy1 No

2:: 24 Yes

Table 12 Command output

Field	Description
Network	Destination network address of the routes advertised by the network command and the shortcut routes.
Mask	Mask of the destination network address.
PrefixLen	Prefix length of the destination network address.
Route-policy	Routing policy that is applied to the route.
Short-cut	Whether the route is a shortcut route: · Yes. · No.

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display bgp non-stop-routing status

Use display bgp non-stop-routing status to display BGP NSR status information.

Syntax

display bgp [ instance instance-name ] non-stop-routing status

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP NSR status information for the default BGP instance.

Examples

# Display BGP NSR status information.

<Sysname> display bgp non-stop-routing status

BGP NSR status: Not ready

Location of preferred standby process: -

TCP NSR status: Not ready

Table 13 Command output

Field	Description
BGP NSR status	BGP NSR status: · Ready—BGP NSR has backed up BGP neighbor and routing information from the active process to the standby process. In this state, BGP NSR can ensure continuous routing when an active/standby process switchover occurs. · Not ready—BGP NSR is backing up BGP neighbor and routing information from the active process to the standby process. If an active/standby process switchover occurs in this state, traffic is interrupted and the BGP session will be re-established. · Not configured—BGP NSR is disabled.
Location of preferred standby process	(In standalone mode.) ID of the slot where the preferred standby process resides. (In IRF mode.) Chassis ID and slot ID where the preferred standby process resides. This field displays - if no standby processes exist.
TCP NSR status	TCP NSR status: · Ready—TCP NSR has backed up TCP connection information from the active process to the standby process. · Not ready—TCP NSR is backing up TCP connection information from the active process to the standby process.

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display bgp paths

Use display bgp paths to display BGP path attribute information.

Syntax

display bgp [ instance instance-name ] paths [ as-regular-expression ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP path attribute information for the default BGP instance.

as-regular-expression: Displays information about BGP path attributes whose AS_PATH attribute matches the specified regular expression. The as-regular-expression argument is a string of 1 to 256 characters. If you do not specify this argument, the command displays information about all BGP path attributes.

Examples

# Display information about all BGP path attributes.

<Sysname> display bgp paths

RefCount MED Path/Origin

3 0 ?

2 0 100i

3 0 100i

1 0 ?

Table 14 Command output

Field	Description
RefCount	Number of BGP routes with these path attributes.
MED	MULTI_EXIT_DISC attribute.
Path/Origin	AS_PATH and ORIGIN attributes of the route: · AS_PATH attribute—Records the ASs the route has passed, which avoids routing loops. · ORIGIN attribute—Identifies the origin of the route: ¡ i—Originated in the AS. The origin of routes advertised with the network command is IGP. ¡ e—Learned through EGP. ¡ ?—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.

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display bgp peer

Use display bgp peer to display BGP peer or peer group information.

Syntax

display bgp [ instance instance-name ] peer ipv4 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ ipv4-address mask-length | { ipv4-address | group-name group-name } log-info | [ ipv4-address ] verbose ]

display bgp [ instance instance-name ] peer ipv6 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ ipv6-address prefix-length | { ipv6-address | group-name group-name } log-info | [ ipv6-address ] verbose ]

display bgp [ instance instance-name ] peer ipv6 [ unicast ] [ vpn-instance vpn-instance-name ] [ [ link-local-address ] interface interface-type interface-number | link-local-address interface interface-type interface-number { log-info | verbose } ]

display bgp [ instance instance-name ] peer ipv6 [ unicast ] [ vpn-instance vpn-instance-name ] [ ipv4-address mask-length | ipv4-address log-info | [ ipv4-address ] verbose ]

display bgp [ instance instance-name ] peer ipv4 [ unicast ] [ vpn-instance vpn-instance-name ] [ ipv6-address prefix-length | interface interface-type interface-number | ipv6-address [ interface interface-type interface-number ] { log-info | verbose } ]

display bgp [ instance instance-name ] peer { ipv4 | ipv6 } [ unicast ] vpn-instance-all [ verbose ]

display bgp [ instance instance-name ] peer link-state [ ipv4-address mask-length | ipv6-address prefix-length | { ipv4-address | ipv6-address | group-name group-name } log-info | [ ipv4-address | ipv6-address ] verbose ]

display bgp [ instance instance-name ] peer vpnv4 [ vpn-instance vpn-instance-name ] [ ipv4-address mask-length | { ipv4-address | group-name group-name } log-info | [ ipv4-address ] verbose ]

display bgp [ instance instance-name ] peer l2vpn evpn [ ipv4-address mask-length | ipv6-address prefix-length | { ipv4-address | ipv6-address | group-name group-name } log-info | [ ipv4-address | ipv6-address ] verbose ]

display bgp [ instance instance-name ] peer vpnv6 [ ipv4-address mask-length | { ipv4-address | group-name group-name } log-info | [ ipv4-address ] verbose ]

display bgp [ instance instance-name ] peer dedicated [ { ipv4-address mask-length | ipv6-address prefix-length } | { ipv4-address | ipv6-address | group-name group-name } log-info | [ ipv4-address | ipv6-address ] verbose ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP peer or peer group information for the default BGP instance.

ipv4: Displays information about a BGP peer or peer group in IPv4 address family.

ipv6: Displays information about a BGP peer or peer group in IPv6 address family.

link-state: Displays BGP LS peer or peer group information.

vpnv4: Displays BGP VPNv4 peer or peer group information.

evpn: Displays BGP EVPN peer or peer group information.

vpnv6: Displays BGP VPNv6 peer or peer group information.

multicast: Displays BGP multicast peer or peer group information.

dedicated: Displays BGP dedicated peer or peer group information.

unicast: Displays BGP unicast peer or peer group information.

vpn-instance-all: Displays BGP peer or peer group information for all VPN instances.

ipv4-address mask-length: Specifies a subnet. The value range for the mask length is 0 to 32. If you specify a subnet, this command displays information about all dynamic peers in the subnet.

ipv4-address: Specifies a peer by its IPv4 address.

ipv6-address prefix-length: Specifies a subnet. The value range for the prefix length is 0 to 128. If you specify a subnet, this command displays information about all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. If you specify the interface interface-type interface-number option, the ipv6-address argument must be the peer's link-local address that the specified interface learned in ND entries.

link-local-address: Specifies a peer by its link-local address. If you do not specify this argument, this command displays information about all peers established through link-local addresses that the specified interface learned in ND entries. This argument is not supported in multicast address family view.

interface-type interface-number: Specifies an interface by its type and number.

group-name group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters.

log-info: Displays log information.

verbose: Displays detailed information. If you do not specify this keyword, the command displays brief BGP peer or peer group information.

Usage guidelines

If you do not specify any parameters, this command displays brief information about all BGP peers for the specified address family.

By default, the unicast keyword is used if the unicast and multicast keywords are not specified.

Examples

# Display brief information about all BGP IPv4 unicast peers.

<Sysname> display bgp peer ipv4

BGP local router ID: 192.168.100.1

Local AS number: 100

Total number of peers: 1 Peers in established state: 1

* - Dynamically created peer

^ - Peer created through link-local address

Peer AS MsgRcvd MsgSent OutQ PrefRcv Up/Down State

10.2.1.2 200 13 16 0 0 00:10:34 Established

# Display brief BGP IPv4 unicast peer information for all VPN instances.

<Sysname> display bgp peer ipv4 vpn-instance-all

Local AS number: 100

* - Dynamically created peer

^ - Peer created through link-local address

VPN instance: 1

BGP local router ID: 111.1.1.1

Total number of peers: 2 Peers in established state: 0

Peer AS MsgRcvd MsgSent OutQ PrefRcv Up/Down State

111.1.1.1 100 0 0 0 0 00:00:34 Connect

111.1.1.2 100 0 0 0 0 00:00:34 Connect

VPN instance: 2

BGP local router ID: 112.1.1.1

Total number of peers: 2 Peers in established state: 0

Peer AS MsgRcvd MsgSent OutQ PrefRcv Up/Down State

112.1.1.1 100 0 0 0 0 00:00:06 Idle

112.1.1.2 100 0 0 0 0 00:00:06 Idle

Table 15 Command output

Field	Description
* - Dynamically created peer	An asterisk (*) before a peer address indicates that the peer is a dynamic peer.
^ - Peer created through link-local address	A caret (^) before a peer address indicates that the peer is created by using a link-local address.
VPN instance	Name of the MPLS L3VPN instance to which the peer belongs.
Peer	IPv4 or IPv6 address of the peer.
AS	AS number of the peer.
MsgRcvd	Number of messages received.
MsgSent	Number of messages sent.
OutQ	Number of messages to be sent.
PrefRcv	For the IPv4, IPv6, VPNv4, and VPNv6 address families, this field displays the number of prefixes that have been received from the peer and added into the local BGP routing table.
Up/Down	Lasting time of the current BGP session state.
State	Current state of the BGP session between the local router and the peer.

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# Display brief information about all dynamic peers in network 1.1.1.0/24.

<Sysname> display bgp peer ipv4 1.1.1.0 24

Type: EBGP link

Dynamic address range: 1.1.1.0 24

Configured: Active Hold Time: 3 sec Keepalive Time: 1 sec

Address family IPv4 Unicast: Configured

Maximum allowed prefix number: 100

Threshold: 75%

Minimum time between advertisements is 100 seconds

Optional capabilities:

Multi-protocol extended capability has been enabled

Route refresh capability has been enabled

Nexthop self has been configured

Keep-all-routes has been configured

Send community has been configured

Send extend community has been configured

Default route originating has been configured

Multi-hop ebgp has been enabled

Peer preferred value: 100

BFD: Enabled

Site-of-Origin: 1:1

Routing policy configured:

No import as-path-acl list

Export as-path-acl list is: 22

No import prefix list

Export prefix list is: p1

No import route policy

Export route policy is: p1

No import filter-policy

No export filter-policy

Dynamic peers:

1.1.1.3

# Display brief information about all dynamic peers in network 1::/64.

<Sysname> display bgp peer ipv6 1:: 64

Type: IBGP link

Dynamic address range: 1:: 64

Configured: Active Hold Time: 180 sec Keepalive Time: 60 sec

Address family IPv6 Unicast: Configured

Maximum allowed prefix number: 4294967295

Threshold: 75%

Minimum time between advertisements is 15 seconds

Optional capabilities:

Multi-protocol extended capability has been enabled

Route refresh capability has been enabled

Send community has been configured

Peer preferred value: 0

Site-of-Origin: Not specified

Routing policy configured:

No routing policy is configured

Dynamic peers:

1::1

Table 16 Command output

Field	Description
Type	BGP connection type between the local router and the dynamic peer: · IBGP link—IBGP connection. · EBGP link—EBGP connection.
Configured	Timers configured on the local router in seconds, including the hold time (Active Hold Time) and keepalive interval (Keepalive Time).
Address family IPv4 Unicast	IPv4 unicast address family capability.
Address family link-state	LS address family capability.
Address family IPv6 Unicast	IPv6 unicast address family capability.
Address family IPv4 Multicast	IPv4 multicast address family capability.
Address family IPv6 Multicast	IPv6 multicast address family capability.
Address family Dedicated	Dedicated address family capability.
Maximum allowed prefix number	Maximum number of routes allowed to learn from the peer.
Threshold	Percentage of received routes from the peer to maximum routes allowed to learn from the peer. If the percentage is reached, the system generates alarm messages.
Minimum time between advertisements	Minimum route advertisement interval in seconds.
Optional capabilities	Optional capabilities supported by the local end.
Peer Preferred Value	Preferred value specified for the routes from the peer.
BFD	Whether BFD is enabled to detect the link to the BGP peers.
IPsec profile name	IPsec profile applied to the IPv6 BGP peer. This field is available only for the IPv6 unicast and IPv6 multicast address families.
Routing policy configured	Routing policy configured for the peer. If you do not specify a routing policy, this field displays No routing policy is configured.
Dynamic peers	IP addresses of dynamic peers.

‌

# Display detailed information about BGP 10.2.1.2 in IPv4 unicast address family.

<Sysname> display bgp peer ipv4 10.2.1.2 verbose

Peer: 10.2.1.2 Local: 192.168.100.1

Type: EBGP link

BGP version 4, remote router ID 192.168.100.2

BGP current state: Established, Up for 00h11m10s

BGP current event: RecvKeepalive

BGP last state: OpenConfirm

Port: Local - 179 Remote - 60672

Configured: Active Hold Time: 180 sec Keepalive Time: 60 sec

Received : Active Hold Time: 180 sec

Negotiated: Active Hold Time: 180 sec Keepalive Time: 60 sec

Peer optional capabilities:

Peer supports BGP multi-protocol extension

Peer supports BGP route refresh capability

Peer supports BGP route AS4 capability

Address family IPv4 Unicast: advertised and received

InQ updates: 0, OutQ updates: 0

NLRI statistics:

Rcvd: UnReach NLRI 0, Reach NLRI 0

Sent: UnReach NLRI 0, Reach NLRI 0

Message statistics:

Msg type Last rcvd time/ Current rcvd count/ History rcvd count/

Last sent time Current sent count History sent count

Open 10:38:50-2019.7.23 1 1

10:38:50-2019.7.23 1 1

Update 10:38:51-2019.7.23 1 1

10:38:51-2019.7.23 1 1

Notification - 0 0

- 0 0

Keepalive 10:38:50-2019.7.23 1 1

10:38:50-2019.7.23 1 1

RouteRefresh - 0 0

- 0 0

Total - 3 3

- 3 3

Maximum allowed prefix number: 4294967295

Threshold: 75%

Minimum time between advertisements is 30 seconds

Optional capabilities:

Multi-protocol extended capability has been enabled

Route refresh capability has been enabled

TCP-MSS configured value: 200

Peer Preferred Value: 0

GTSM has been enabled, and the maximum number of hops is 10

BFD: Enabled

Site-of-Origin: Not specified

Routing policy configured:

No routing policy is configured

# Display detailed information about BGP peer 2::2 in IPv4 unicast address family.

<Sysname> display bgp peer ipv4 2::2 verbose

Peer: 2::2 Local: 2.2.2.2

Type: EBGP link

BGP version 4, remote router ID 3.3.3.3

BGP current state: Established, Up for 00h24m31s

BGP current event: KATimerExpired

BGP last state: OpenConfirm

Port: Local - 179 Remote - 51971

Configured: Active Hold Time: 180 sec Keepalive Time: 60 sec

Received : Active Hold Time: 180 sec

Negotiated: Active Hold Time: 180 sec Keepalive Time: 60 sec

Peer optional capabilities:

Peer supports BGP multi-protocol extension

Peer supports BGP route refresh capability

Peer supports BGP extended nexthop encoding capability

Peer supports BGP route AS4 capability

Address family IPv4 Unicast: advertised and received

InQ updates: 0, OutQ updates: 0

NLRI statistics:

Rcvd: UnReach NLRI 0, Reach NLRI 1

Sent: UnReach NLRI 0, Reach NLRI 5

Message statistics:

Msg type Last rcvd time/ Current rcvd count/ History rcvd count/

Last sent time Current sent count History sent count

Open 15:45:52-2019.4.19 1 2

15:45:52-2019.4.19 1 2

Update 15:45:53-2019.4.19 2 4

15:45:52-2019.4.19 6 12

Notification 15:45:50-2019.4.19 0 1

- 0 0

Keepalive 16:09:25-2019.4.19 25 31

16:10:13-2019.4.19 30 36

RouteRefresh - 0 0

- 0 0

Total - 28 38

- 37 50

Maximum allowed prefix number: 4294967295

Threshold: 75%

Minimum time between advertisements is 30 seconds

Optional capabilities:

Multi-protocol extended capability has been enabled

Route refresh capability has been enabled

Extended nexthop encoding has been enabled

TCP-MSS configured value: 200

Peer preferred value: 0

Site-of-Origin: Not specified

Routing policy configured:

No routing policy is configured

# Display detailed information about BGP peer 1::2 in IPv6 unicast address family.

<Sysname> display bgp peer ipv6 1::2 verbose

Peer: 1::2 Local: 192.168.1.136

Type: EBGP link

Link-local interface: Ten-GigabitEthernet3/0/1

BGP version 4, remote router ID 192.168.1.135

BGP current state: Established, Up for 00h05m48s

BGP current event: RecvKeepalive

BGP last state: OpenConfirm

Port: Local - 13184 Remote - 179

Configured: Active Hold Time: 180 sec Keepalive Time: 60 sec

Received : Active Hold Time: 180 sec

Negotiated: Active Hold Time: 180 sec Keepalive Time: 60 sec

Peer optional capabilities:

Peer supports BGP multi-protocol extension

Peer supports BGP route refresh capability

Peer supports BGP route AS4 capability

Address family IPv6 Unicast: advertised and received

InQ updates: 0, OutQ updates: 0

NLRI statistics:

Rcvd: UnReach NLRI 0, Reach NLRI 0

Sent: UnReach NLRI 0, Reach NLRI 3

Message statistics:

Msg type Last rcvd time/ Current rcvd count/ History rcvd count/

Last sent time Current sent count History sent count

Open 18:59:15-2019.4.24 1 1

18:59:15-2019.4.24 1 2

Update - 0 0

18:59:16-2019.4.24 1 1

Notification - 0 0

18:59:15-2019.4.24 0 1

Keepalive 18:59:15-2019.4.24 1 1

18:59:15-2019.4.24 1 1

RouteRefresh - 0 0

- 0 0

Total - 2 2

- 3 5

Maximum allowed prefix number: 4294967295

Threshold: 75%

Minimum time between advertisements is 30 seconds

Optional capabilities:

Multi-protocol extended capability has been enabled

Route refresh capability has been enabled

TCP-MSS configured value: 200

Peer preferred value: 0

GTSM has been enabled, and the maximum number of hops is 10

BFD: Enabled

IPsec profile name: profile001

Site-of-Origin: Not specified

Routing policy configured:

No routing policy is configured

# Display detailed BGP IPv4 unicast peer information for all VPN instances.

<Sysname> display bgp peer ipv4 vpn-instance-all verbose

Peer: 111.1.1.1 Local: 111.1.1.1

VPN instance: 1

Type: IBGP link

BGP version 4, remote router ID 0.0.0.0

BGP current state: Connect

BGP current event: CRTimerExpired

BGP last state: Connect

InQ updates: 0, OutQ updates: 0

NLRI statistics:

Rcvd: UnReach NLRI 0, Reach NLRI 0

Sent: UnReach NLRI 0, Reach NLRI 0

Message statistics:

Msg type Last rcvd time/ Current rcvd count/ History rcvd count/

Last sent time Current sent count History sent count

Open - 0 0

- 0 0

Update - 0 0

- 0 0

Notification - 0 0

- 0 0

Keepalive - 0 0

- 0 0

RouteRefresh - 0 0

- 0 0

Total - 0 0

- 0 0

Maximum allowed prefix number: 4294967295

Threshold: 75%

Minimum time between advertisements is 15 seconds

Optional capabilities:

Multi-protocol extended capability has been enabled

Route refresh capability has been enabled

Peer preferred value: 0

Site-of-Origin: Not specified

Routing policy configured:

No routing policy is configured

Peer: 111.1.1.2 Local: 111.1.1.1

VPN instance: 1

Type: IBGP link

BGP version 4, remote router ID 0.0.0.0

BGP current state: Connect

BGP current event: CRTimerExpired

BGP last state: Connect

InQ updates: 0, OutQ updates: 0

NLRI statistics:

Rcvd: UnReach NLRI 0, Reach NLRI 0

Sent: UnReach NLRI 0, Reach NLRI 0

Message statistics:

Msg type Last rcvd time/ Current rcvd count/ History rcvd count/

Last sent time Current sent count History sent count

Open - 0 0

- 0 0

Update - 0 0

- 0 0

Notification - 0 0

- 0 0

Keepalive - 0 0

- 0 0

RouteRefresh - 0 0

- 0 0

Total - 0 0

- 0 0

Maximum allowed prefix number: 4294967295

Threshold: 75%

Minimum time between advertisements is 15 seconds

Optional capabilities:

Multi-protocol extended capability has been enabled

Route refresh capability has been enabled

TCP-MSS configured value: 200

Peer preferred value: 0

Site-of-Origin: Not specified

Routing policy configured:

No routing policy is configured

Peer: 112.1.1.1 Local: 112.1.1.1

VPN instance: 2

Type: IBGP link

BGP version 4, remote router ID 0.0.0.0

BGP current state: Connect

BGP current event: CRTimerExpired

BGP last state: Connect

InQ updates: 0, OutQ updates: 0

NLRI statistics:

Rcvd: UnReach NLRI 0, Reach NLRI 0

Sent: UnReach NLRI 0, Reach NLRI 0

Message statistics:

Msg type Last rcvd time/ Current rcvd count/ History rcvd count/

Last sent time Current sent count History sent count

Open - 0 0

- 0 0

Update - 0 0

- 0 0

Notification - 0 0

- 0 0

Keepalive - 0 0

- 0 0

RouteRefresh - 0 0

- 0 0

Total - 0 0

- 0 0

Maximum allowed prefix number: 4294967295

Threshold: 75%

Minimum time between advertisements is 15 seconds

Optional capabilities:

Multi-protocol extended capability has been enabled

Route refresh capability has been enabled

TCP-MSS configured value: 200

Peer preferred value: 0

Site-of-Origin: Not specified

Routing policy configured:

No routing policy is configured

Peer: 112.1.1.2 Local: 112.1.1.1

VPN instance: 2

Type: IBGP link

BGP version 4, remote router ID 0.0.0.0

BGP current state: Connect

BGP current event: CRTimerExpired

BGP last state: Connect

InQ updates: 0, OutQ updates: 0

NLRI statistics:

Rcvd: UnReach NLRI 0, Reach NLRI 0

Sent: UnReach NLRI 0, Reach NLRI 0

Message statistics:

Msg type Last rcvd time/ Current rcvd count/ History rcvd count/

Last sent time Current sent count History sent count

Open - 0 0

- 0 0

Update - 0 0

- 0 0

Notification - 0 0

- 0 0

Keepalive - 0 0

- 0 0

RouteRefresh - 0 0

- 0 0

Total - 0 0

- 0 0

Maximum allowed prefix number: 4294967295

Threshold: 75%

Minimum time between advertisements is 15 seconds

Optional capabilities:

Multi-protocol extended capability has been enabled

Route refresh capability has been enabled

TCP-MSS configured value: 200

Peer preferred value: 0

Site-of-Origin: Not specified

Routing policy configured:

No routing policy is configured

Table 17 Command output

Field	Description
Peer	IPv4 or IPv6 address of the peer.
Local	Local router ID.
VPN instance	Name of the MPLS L3VPN instance to which the peer belongs.
Type	BGP connection type between the local router and the peer: · IBGP link—IBGP connection. · EBGP link—EBGP connection.
Link-local interface	Interface used to establish the connection to a peer created by using a link-local address.
remote router ID	Router ID of the peer.
BGP current state	Current state of the BGP session between the local router and the peer.
Up for	Lasting time of the BGP session.
BGP current event	Current event of the BGP session between the local router and the peer.
BGP last state	Previous state of the BGP session.
Port	TCP port numbers of the local router and its peer.
Configured	Timers configured on the local router in seconds, including the hold time (Active Hold Time) and keepalive interval (Keepalive Time).
Received	Received timer (configured on the peer) in seconds, including the hold time (Active Hold Time).
Negotiated	Negotiated timers in seconds, including the hold time (Active Hold Time) and keepalive interval (Keepalive Time).
Peer optional capabilities	Optional capabilities supported by the peer.
Peer supports BGP route AS4 capability	The peer supports 4-byte AS number.
Peer supports BGP extended nexthop encoding capability	Peers in IPv4 unicast address family support extended next hop encoding capability.
Address family IPv4 Unicast	IPv4 unicast address family capability: routes of the address family can be advertised and received.
Address family LS	LS address family capability: routes of the address family can be advertised and received.
Address family IPv6 Unicast	IPv6 unicast address family capability: routes of the address family can be advertised and received.
Address family IPv4 Multicast	IPv4 multicast address family capability: routes of the address family can be advertised and received.
Address family IPv6 Multicast	IPv6 multicast address family capability: routes of the address family can be advertised and received.
Address family Dedicated	Dedicated address family capability: routes of the address family can be advertised and received.
InQ updates	Number of received updates to be processed.
OutQ updates	Number of updates to be sent to the peer.
NLRI statistics	Number of the reachable and unreachable routes received from and sent to the peer after the BGP session is established.
Message statistics	BGP message statistics.
Msg type	BGP message type.
Last rcvd time/Last sent time	Time when the most recent BGP message was received from or sent to the peer.
Current rcvd count/Current sent count	Number of BGP messages received from or sent to the peer on the current BGP session.
History rcvd count/History sent count	Number of BGP messages received from or sent to the peer since the BGP peer relationship was established.
Total	Total number of received and sent messages.
Maximum allowed prefix number	Maximum number of routes allowed to learn from the peer.
Threshold	Percentage of received routes from the peer to maximum routes allowed to learn from the peer. If the percentage is reached, the system generates alarm messages.
Minimum time between advertisements	Minimum route advertisement interval in seconds.
Optional capabilities	Optional capabilities supported by the local end.
Extended Nexthop Encoding has been enabled	The local end supports the extended next hop encoding capability.
TCP-MSS configured value	TCP maximum segment size used for TCP connection to the peer.
Peer Preferred Value	Preferred value specified for the routes from the peer.
GTSM has been enabled		GTSM is supported.
the maximum number of hops		Maximum number of hops to the specified peer.
BFD	Whether BFD is enabled to detect the link to the BGP peer.
IPsec profile name	IPsec profile applied to the IPv6 BGP peer. This field is available only for the IPv6 unicast and IPv6 multicast address families.
Routing policy configured	Routing policy configured for the peer. If you do not specify a routing policy, this field displays No routing policy is configured.

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# Display log information for BGP IPv4 unicast peer 1.1.1.1.

<Sysname> display bgp peer ipv4 1.1.1.1 log-info

Peer : 1.1.1.1

Date Time State Notification

Error/SubError

06-Feb-2019 22:54:42 Down Send notification with error 6/4

Cease/Administrative Reset

# Display log information for BGP IPv6 unicast peer fe80::2.

<Sysname> display bgp peer ipv6 fe80::2 interface ten-gigabitethernet 3/0/1 log-info

Peer : FE80::2 Interface: Ten-GigabitEthernet3/0/1

Date Time State Notification

Error/SubError

11-Jun-2019 08:43:10 Down Send notification with error 6/4

Cease/Administrative Reset

Table 18 Command output

Field	Description
Peer	IPv4 or IPv6 address of the peer.
Interface	Interface type and number.
Date	Date on which the Notification was sent or received.
Time	Time at which the Notification was sent or received.
State	BGP session state: · Up—The BGP session is in Established state. · Down—The BGP session is down.
Notification Error/SubError	Error code of the Notification, indicating the cause of why the BGP session was down. · Error—Refers to the error code, which identifies the type of the Notification. · SubError—Refers to the error subcode of the Notification, which identifies the specific information about the reported error.

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display bgp peer received prefix-list

Use display bgp peer received prefix-list to display the ORF prefix information received by a peer.

Syntax

display bgp [ instance instance-name ] peer ipv4 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] ipv4-address received prefix-list

display bgp [ instance instance-name ] peer ipv6 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] ipv6-address received prefix-list

display bgp [ instance instance-name ] peer ipv6 [ unicast ] [ vpn-instance vpn-instance-name ] { ipv4-address | link-local-address interface interface-type interface-number } received prefix-list

display bgp [ instance instance-name ] peer ipv4 [ unicast ] [ vpn-instance vpn-instance-name ] ipv6-address [ interface interface-type interface-number ] received prefix-list

display bgp [ instance instance-name ] peer { vpnv4 | vpnv6 } ipv4-address received prefix-list

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays ORF prefix information for the default BGP instance.

ipv4: Displays BGP IPv4 peer information.

ipv6: Displays BGP IPv6 peer information.

vpnv4: Displays BGP VPNv4 peer information.

vpnv6: Displays BGP VPNv6 peer information.

multicast: Displays BGP multicast peer information.

unicast: Displays BGP unicast peer information.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify an instance, this command displays information for the public network.

ipv4-address: Specifies a peer by its IPv4 address.

ipv6-address: Specifies a peer by its IPv6 address. If you specify the interface interface-type interface-number option, the ipv6-address argument must specify the peer's link-local address that the specified interface learned in ND entries.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

Examples

# Display the ORF prefix information received by peer 10.110.25.20.

<Sysname> display bgp peer ipv4 10.110.25.20 received prefix-list

ORF prefix list entries: 2

index: 10 prefix 1.1.1.0/24 ge 26 le 32

index: 20 prefix 2.1.1.0/24 ge 26 le 32

Table 19 Command output

Field	Description
ORF prefix list entries	Number of ORF prefixes.
index	Prefix index.
prefix	Prefix information.
ge	Greater than or equal to.
le	Less than or equal to.

‌

display bgp routing-table dampened

Use display bgp routing-table dampened to display dampened BGP routes.

Syntax

display bgp [ instance instance-name ] routing-table dampened { ipv4 | ipv6 } [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ]

display bgp [ instance instance-name ] routing-table dampened vpnv4

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays dampened BGP routes for the default BGP instance.

ipv4: Displays dampened BGP IPv4 routes.

ipv6: Displays dampened BGP IPv6 routes.

vpnv4: Displays dampened IBGP VPNv4 routes.

multicast: Displays dampened BGP multicast routes.

unicast: Displays dampened BGP unicast routes.

Usage guidelines

By default, the unicast keyword is used if neither the multicast keyword nor the unicast keyword is specified.

Examples

# Display dampened BGP IPv4 unicast routes.

<Sysname> display bgp routing-table dampened ipv4

Total number of routes: 1

BGP local router ID is 192.168.1.135

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network From Reuse Path/Ogn

de 20.1.1.0/24 10.1.1.2 00:56:27 100i

# Display dampened BGP IPv6 unicast routes.

<Sysname> display bgp routing-table dampened ipv6

Total number of routes: 2

BGP local router ID is 192.168.1.135

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

de Network : 2:: PrefixLen : 64

From : 10.1.1.1 Reuse : 00:39:49

Path/Ogn: 100i

de Network : 2:: PrefixLen : 64

From : 1::1 Reuse : 00:39:49

Path/Ogn: 100i

Table 20 Command output

Field	Description
Status codes	Status codes: · * – valid—Valid route. · > – best—Optimal route. · d – dampened—Dampened route. · h – history—History route. · s – suppressed—Suppressed route. · S – stale—Stale route. · i – internal—Internal route. · e – external—External route. · a – additional-path—Add-Path optimal route.
Origin	Origin of the route: · i – IGP—Originated in the AS. The origin of routes advertised with the network command is IGP. · e – EGP—Learned through EGP. · ?– incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Network	Destination network address.
From	IP address from which the route was received.
Reuse	Reuse time of the route.
Path/Ogn	AS_PATH and ORIGIN attributes of the route: · AS_PATH attribute—Records the ASs the route has passed, which avoids routing loops. · ORIGIN attribute—Identifies the origin of the route.

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Related commands

dampening

dampening ibgp (MPLS Command Reference)

reset bgp dampening

display bgp routing-table dedicated

Use display bgp routing-table dedicated to display BGP dedicated routing information.

Syntax

display bgp [ instance instance-name ] routing-table dedicated [ peer { ipv4-address | ipv6-address } { advertised-routes | received-routes } [ statistics ] | [ route-type mac-ip ] [ { dedicated-route route-length | dedicated-prefix } [ advertise-info ] | ipv4-address | ipv6-address | mac-address ] | statistics ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

peer: Displays BGP dedicated routing information advertised to or received from the specified peer.

ipv4-address: Specifies a peer by its IPv4 address.

ipv6-address: Specifies a peer by its IPv6 address.

advertised-routes: Displays advertised BGP dedicated routing information.

received-routes: Displays received BGP dedicated routing information.

statistics: Displays BGP dedicated route statistics.

route-type: Displays BGP dedicated routes of the specified type. Only MAC/IP routes are supported in the current software version.

mac-ip: Displays MAC/IP routes.

dedicated-route route-length: Displays detailed information about the specified BGP dedicated route. The dedicated-route argument specifies the BGP dedicated routing information, in the range of 1 to 512 characters. The route-length argument specifies the length of the BGP dedicated routing information, in the range of 0 to 65535 bits.

dedicated-prefix: Displays detailed information about the specified BGP dedicated route. The dedicated-prefix argument is a case-insensitive string of 1 to 512 characters and specifies the routing information and routing information length of the dedicated route in dedicated-route/route-length format.

advertise-info: Displays advertisement information for BGP dedicated routes.

ipv4-address: Displays BGP dedicated routes that carry the specified IPv4 address.

ipv6-address: Displays BGP dedicated routes that carry the specified IPv6 address.

mac-address: Displays BGP dedicated routes that carry the specified MAC address.

Examples

# Display brief information about all BGP dedicated routes.

<Sysname> display bgp routing-table dedicated

BGP local router ID is 8.8.8.8

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Total number of routes: 2

* >e Network : [1][48][0011-0022-0033][32][11.22.33.44][3]/104

NextHop : 1.2.3.4 LocPrf : 100

PrefVal : 0

MED : 0

Path/Ogn: 200i

* >e Network : [1][48][0710-0101-3451][0][3]/72

NextHop : 1.2.3.9 LocPrf : 100

PrefVal : 0

MED : 0

Path/Ogn: 200i

Table 21 Command output

Field	Description
BGP local router ID	Local router ID.
Status codes	Status codes: · * – valid—Valid route. · > – best—Optimal route. · d - dampened—Dampened route. · h – history—History route. · s – suppressed—Suppressed route. · S – stale—Stale route. · i – internal—Internal route. · e – external—External route. · a - additional-path—Add-Path optimal route.
Origin	Origin of the route: · i – IGP—Originated in the AS. The origin of routes advertised with the network command is IGP. · e – EGP—Learned through EGP. · ?– incomplete—Unknown origin.
Total number of routes	Total number of BGP dedicated routes.
Network	BGP dedicated route/route length in [1][MACLength][MAC][IPAddressLength][IPAddress][OriginType] format: · 1—The route is a MAC/IP route and carries IPSG binding information. · MACLength—MAC address length. · MAC—MAC address. · IPAddressLength—IP address length. · IPAddress—IP address. · OriginType—IPSG binding source. Options include the following: ¡ 3—DHCP relay. ¡ 7—ND snooping. ¡ 8—DHCPv6 relay.
NextHop	Next hop IP address.
LocPrf	Local preference value.
PrefVal	Preferred value of the route.
MED	MED attribute.
Path/Ogn	AS_PATH and ORIGIN attributes of the route: · AS_PATH—Records the ASs the route has passed, which avoids routing loops. This field can display only 16 AS numbers. Exceeding AS numbers are omitted. You can view the omitted AS numbers by displaying the detailed route information. · ORIGIN—Identifies the origin of the route.

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# Display detailed information about BGP dedicated route [1][48][0011-0022-0033][32][11.22.33.44][3]/120.

<Sysname> display bgp routing-table dedicated [1][48][0011-0022-0033][32][11.22.33.44][3]/120

BGP local router ID: 1.1.1.2

Local AS number: 100

Total number of routes: 1

Paths: 2 available, 1 best

BGP routing table information of [1][48][0011-0022-0033][32][11.22.33.44][3]/120:

From : 10.1.1.2 (192.168.56.17)

Rely nexthop : 10.1.1.2

Original nexthop: 10.1.1.2

OutLabel : NULL

RxPathID : 0x0

TxPathID : 0x0

AS-path : 200

Origin : egp

Attribute value : MED 0, pref-val 0

State : valid, external, best

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

Route type : MAC/IP route

MAC length : 48

MAC address : 0011-0022-0033

IP length : 32

IP address : 11.22.33.44

Origin type : DHCP relay agent

VLAN ID : 4096

Inner VLAN ID : 10

Origin router ID: 1.1.1.2

Table 22 Command output

Field	Description
BGP local router ID	Local router ID.
Local AS number	Local AS number.
Total number of routes	Total number of BGP dedicated routes.
Paths	Number of routes: · available—Number of valid routes. · best—Number of optimal routes.
BGP routing table information of [1][48][0011-0022-0033][32][11.22.33.44][3]/120	Detailed information about BGP dedicated route [1][48][0011-0022-0033][32][11.22.33.44][3]/120.
From	IP address of BGP peer that advertised the route.
Rely Nexthop	Next hop found by route recursion. If no next hop is found, this field displays not resolved.
Original nexthop	Original next hop of the route. If the route was obtained from a BGP UPDATE message, the original next hop is the next hop IP address in the message.
OutLabel	Outgoing label of the route. This field is not supported in BGP dedicated address family.
RxPathID	Add-path ID of received routes. This field is not supported in BGP dedicated address family.
TxPathID	Add-path ID of advertised routes. This field is not supported in BGP dedicated address family.
AS-path	AS_PATH attribute of the route.
Origin	Origin of the route: · igp—Originated in the AS. · egp—Learned through EGP. · incomplete—Unknown origin.
Attribute value	BGP path attributes: · MED—MED value. · localpref—Local preference value. · pref-val—Preferred value. · pre—Route preference.
State	Current state of the route: · valid. · internal. · external. · local. · best.
IP precedence	IP precedence in the range of 0 to 7. N/A indicates that the route does not support this field.
QoS local ID	QoS local ID in the range of 1 to 4095. N/A indicates that the route does not support this field.
Traffic index	Traffic index in the range of 1 to 64. N/A indicates that the route does not support this field.
Route Type	Route type. Only MAC/IP is supported in the current software version.
MAC Length	Length of the MAC address carried in the dedicated route.
MAC	MAC address carried in the dedicated route.
IPAddressLength	Length of the IP address carried in the dedicated route.
IPAddress	IP address carried in the dedicated route.
Origin type	IPSG binding origin: · ND snooping. · DHCP relay agent. · DHCPv6 relay agent.
VLAN ID	VLAN ID carried in the dedicated route.
Inner VLAN ID	Inner VLAN ID carried in the dedicated route. This field displays N/A if the route carries only one VLAN tag.
Origin router ID	ID of the router that generates the route.

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# Display advertisement information about BGP dedicated route [1][48][0011-0022-0033][32][11.22.33.44][3]/120.

<Sysname> display bgp routing-table dedicated [1][48][0011-0022-0033][32][11.22.33.44][3]/120 advertise-info

BGP local router ID: 192.168.1.136

Local AS number: 100

Total number of routes: 1

Paths: 1 best

BGP routing table information of [1][48][0011-0022-0033][32][11.22.33.44]/104:

Advertised to peers (1 in total):

10.1.1.2

Table 23 Command output

Field	Description
BGP local router ID	Local router ID.
Local AS number	Local AS number.
Total number of routes	Total number of BGP dedicated routes.
Paths	Number of optimal routes to the destination.
BGP routing table information of [1][48][0011-0022-0033][32][11.22.33.44][3]/120	Advertisement information about BGP dedicated route [1][48][0011-0022-0033][32][11.22.33.44][3]/120.
Advertised to peers (1 in total)	Peers to which the route has been advertised.

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# Display statistics for BGP dedicated routes advertised to peer 1::1.

<Sysname> display bgp routing-table dedicated peer 1::1 advertised-routes statistics

Advertised routes total: 1

# Display statistics for BGP dedicated routes received from peer 1::1.

<Sysname> display bgp routing-table dedicated peer 1::1 received-routes statistics

Received routes total: 1

Table 24 Command output

Field	Description
Advertised routes total	Total number of BGP dedicated routes advertised to the peer.
Received routes total	Total number of BGP dedicated routes received from the peer.

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# Display BGP dedicated route statistics.

<Sysname> display bgp routing-table dedicated statistics

Total number of routes: 4

Table 25 Command output

Field	Description
Total number of routes	Total number of BGP dedicated routes.

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display bgp routing-table flap-info

Use display bgp routing-table flap-info to display BGP route flap statistics.

Syntax

display bgp [ instance instance-name ] routing-table flap-info ipv4 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ ipv4-address [ { mask-length | mask } [ longest-match ] ] | as-path-acl { as-path-acl-number | as-path-acl-name } ]

display bgp [ instance instance-name ] routing-table flap-info ipv6 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ ipv6-address prefix-length | as-path-acl { as-path-acl-number | as-path-acl-name } ]

display bgp [ instance instance-name ] routing-table flap-info vpnv4 [ ipv4-address [ { mask | mask-length } [ longest-match ] ] | as-path-acl { as-path-acl-number | as-path-acl-name } ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP route flap statistics for the default BGP instance.

ipv4: Displays BGP IPv4 route flap statistics.

ipv6: Displays BGP IPv6 route flap statistics.

vpnv4: Displays IBGP VPNv4 route flap statistics.

multicast: Displays BGP multicast route flap statistics.

unicast: Displays BGP unicast route flap statistics.

ipv4-address: Specifies a destination network address.

mask-length: Specifies a mask length in the range of 0 to 32.

mask: Specifies a network mask in dotted decimal notation.

longest-match: Specifies longest match mode, which selects the longest matching unicast or multicast route through the following steps:

1. ANDs the specified network address with the mask of each route.

2. Matches a route if the AND result is the same as the network address of the route and the mask of the route is shorter than or equal to the specified mask.

3. Selects the route with the longest mask among the matching routes.

ipv6-address prefix-length: Displays route flap statistics for BGP IPv6 routes that match the specified network address, and match the prefix length in the range of 0 to 128.

as-path-acl as-path-acl-number: Displays route flap statistics for BGP routes that match the AS path list specified by its number in the range of 1 to 256.

as-path-acl as-path-acl-name: Displays route flap statistics for BGP routes that match the AS path list specified by its name, a case-sensitive string of 1 to 51 characters. The AS path list name cannot contain only digits.

Usage guidelines

If you specify only the ipv4-address argument, the system ANDs the network address with the mask of a BGP IPv4 unicast or multicast route. If the result matches the network address of the route, the command displays flap statistics of the route.

If you specify the ipv4-address mask or ipv4-address mask-length argument, and do not specify the longest-match keyword, the command displays flap statistics of the BGP IPv4 unicast or multicast route that matches both the specified destination network address and the mask (or mask length).

By default, the unicast keyword is used if neither the multicast keyword nor the unicast keyword is specified.

Examples

# Display BGP IPv4 unicast route flap statistics.

<Sysname> display bgp routing-table flap-info ipv4

Total number of routes: 1

BGP local router ID is 192.168.1.135

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network From Flaps Duration Reuse Path/Ogn

de 20.1.1.0/24 10.1.1.2 1 00:02:36 00:53:58 100i

# Display BGP IPv6 unicast route flap statistics.

<Sysname> display bgp routing-table flap-info ipv6

Total number of routes: 2

BGP local router ID is 192.168.1.135

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

de Network : 2:: PrefixLen : 64

From : 10.1.1.1 Flaps : 5

Duration: 00:03:25 Reuse : 00:39:28

Path/Ogn: 100i

de Network : 2:: PrefixLen : 64

From : 1::1 Flaps : 5

Duration: 00:03:25 Reuse : 00:39:28

Path/Ogn: 100i

Table 26 Command output

Field	Description
Status codes	Status codes: · * – valid—Valid route. · > – best—Optimal route. · d – dampened—Dampened route. · h – history—History route. · s – suppressed—Suppressed route. · S – stale—Stale route. · i – internal—Internal route. · e – external—External route. · a – additional-path.
Origin	Origin of the route: · i – IGP—Originated in the AS. The origin of routes advertised with the network command is IGP. · e – EGP—Learned through EGP. · ?– incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Network	Destination network address.
From	Source IP address of the route.
Flaps	Number of routing flaps.
Duration	Duration time of the flap route.
Reuse	Reuse time of the route.
Path/Ogn	AS_PATH and ORIGIN attributes of the route: · AS_PATH attribute—Records the ASs the route has passed, which avoids routing loops. · ORIGIN attribute—Identifies the origin of the route.

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Related commands

dampening

dampening ibgp (MPLS Command Reference)

reset bgp flap-info

display bgp routing-table ipv4 multicast

Use display bgp routing-table ipv4 multicast to display BGP IPv4 multicast routing information.

Syntax

display bgp [ instance instance-name ] routing-table ipv4 multicast [ ipv4-address [ { mask-length | mask } [ longest-match ] ] | ipv4-address [ mask-length | mask ] advertise-info | ipv4-address [ mask-length | mask ] { as-path | cluster-list | community | ext-community } | peer ipv4-address { advertised-routes | received-routes } [ ipv4-address [ mask-length | mask ] | statistics ] | statistics ]

display bgp [ instance instance-name ] routing-table ipv4 multicast as-path-acl { as-path-acl-number | as-path-acl-name }

display bgp [ instance instance-name ] routing-table ipv4 multicast [ statistics ] community [ community-number&<1-32> | aa:nn&<1-32> ] [ internet | no-advertise | no-export | no-export-subconfed ] [ whole-match ]

display bgp [ instance instance-name ] routing-table ipv4 multicast [ statistics ] community-list { basic-community-list-number | adv-community-list-number | comm-list-name } [ whole-match ]

display bgp [ instance instance-name ] routing-table ipv4 multicast [ statistics ] ext-community [ rt route-target | soo site-of-origin ]&<1-32> [ whole-match ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP IPv4 multicast routing information for the default BGP instance.

ipv4-address: Specifies a destination network address.

mask-length: Specifies a mask length in the range of 0 to 32.

mask: Specifies a network mask in dotted decimal notation.

longest-match: Specifies longest match mode, which selects the longest matching route through the following steps:

1. ANDs the specified network address with the mask of each route.

2. Matches a route if the AND result is the same as the network address of the route and the mask of the route is shorter than or equal to the specified mask.

3. Selects the route with the longest mask among the matching routes.

advertise-info: Displays advertisement information for BGP IPv4 multicast routes.

as-path: Displays AS_PATH attribute information for BGP IPv4 multicast routes.

cluster-list: Displays CLUSTER_LIST attribute information for BGP IPv4 multicast routes.

community: Displays community attribute information for BGP IPv4 multicast routes or displays BGP IPv4 multicast routes that match the community number criterion specified for route filtering.

ext-community: Displays extended community attribute information for BGP IPv4 multicast routes or displays BGP IPv4 multicast routes that match the extended community attribute criterion specified for route filtering.

peer ipv4-address: Displays BGP IPv4 multicast routing information advertised to or received from the specified peer.

advertised-routes: Displays BGP IPv4 multicast routing information advertised to the specified peer.

received-routes: Displays BGP IPv4 multicast routing information received from the specified peer.

statistics: Displays BGP IPv4 multicast route statistics.

as-path-acl as-path-acl-number: Displays BGP IPv4 multicast routes that match the AS path list specified by its number in the range of 1 to 256.

as-path-acl as-path-acl-name: Displays BGP IPv4 multicast routes that match the AS path list specified by its name, a case-sensitive string of 1 to 51 characters. The AS path list name cannot contain only digits.

community-number&<1-32>: Specifies a community number in integer format. The value range for the community-number argument is 1 to 4294967295. &<1-32> indicates that a maximum of 32 numbers can be specified.

aa:nn&<1-32>: Specifies a community number in aa:nn format. Both aa and nn are in the range of 0 to 65535. &<1-32> indicates that a maximum of 32 numbers can be specified.

internet: Displays BGP IPv4 multicast routes that have the INTERNET community attribute. Routes with this attribute can be advertised to all BGP peers. By default, all routes have this attribute.

no-advertise: Displays BGP IPv4 multicast routes that have the NO_ADVERTISE community attribute. Routes with this attribute cannot be advertised to any peers.

no-export: Displays BGP IPv4 multicast routes that have the NO_EXPORT community attribute. Routes with this attribute cannot be advertised outside the local AS or confederation, but can be advertised to other sub-ASs in the confederation.

no-export-subconfed: Displays BGP IPv4 multicast routes that have the NO_EXPORT_SUBCONFED community attribute. Routes with this attribute cannot be advertised outside the local AS or to other sub-ASs in the confederation.

whole-match: Displays BGP IPv4 multicast routes that exactly match the specified community list, community numbers, or extended community attributes. If you do not specify this keyword, the command displays BGP IPv4 multicast routes that meet one of the following requirements:

· The community attributes of the routes include the specified community list.

· The community attributes of the routes include the specified community numbers.

· The extended community attributes of the routes include the specified extended community attributes.

community-list: Displays BGP IPv4 multicast routes that match a community list.

basic-community-list-number: Specifies a basic community list by its number in the range of 1 to 99.

comm-list-name: Specifies a community list by its name, a case-sensitive string of 1 to 63 characters.

adv-community-list-number: Specifies an advanced community list by its number in the range of 100 to 199.

rt route-target: Specifies a Route Target (RT) attribute value. The value for this argument is a string of 3 to 24 characters.

soo site-of-origin: Specifies a Site of Origin (SoO) attribute value. The value for this argument is a string of 3 to 24 characters.

&<1-32>: Indicates that you can specify a maximum of 32 extended community attributes.

Usage guidelines

If you do not specify any parameters, this command displays brief information about all BGP IPv4 multicast routes.

If you specify only the ipv4-address argument, the system ANDs the network address with the mask of a route. If the result matches the network address of the route, the command displays information about the route.

If you specify the ipv4-address mask or ipv4-address mask-length argument and do not specify the longest-match keyword, this command displays information about the BGP IPv4 multicast route that matches both the specified destination network address and the mask (or mask length).

When you specify a RT or SoO attribute, use one of the following formats:

· 16-bit AS number:32-bit user-defined number. For example, 100:3. The value range is 0 to 65535 for an AS number and is 0 to 4294967295 for a user-defined number.

· 32-bit IP address:16-bit user-defined number. For example, 192.168.122.15:1. The value range is 0 to 65535 for a user-defined number.

· 32-bit AS number:16-bit user-defined number. For example, 70000:3. The value range is 65536 to 4294967295 for an AS number and is 0 to 65535 for a user-defined number.

· 32-bit IP address/IPv4 address mask length:16-bit user-defined number. For example, 192.168.122.15/24:1.

· 32-bit AS number in dotted format:16-bit user-defined number. For example, 65535.65535:1.

When you specify none of the community-number, aa:nn, internet, no-advertise, no-export, and no-export-subconfed parameters, this command displays BGP IPv4 multicast routes that have community attributes. In this situation, the whole-match keyword does not take effect.

When you specify neither of the rt and soo parameters, this command displays BGP IPv4 multicast routes that have extended community attributes. In this situation, the whole-match keyword does not take effect.

Examples

# Display brief information about all BGP IPv4 multicast routes.

<Sysname> display bgp routing-table ipv4 multicast

Total number of routes: 3

BGP local router ID is 192.168.1.62

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Path/Ogn

* > 5.5.5.5/32 127.0.0.1 0 32768 ?

* > 192.168.1.0 192.168.1.62 0 32768 ?

* > 192.168.1.62/32 127.0.0.1 0 32768 ?

# Display information about BGP IPv4 multicast routes that match AS path list 20.

<Sysname> display bgp routing-table ipv4 multicast as-path-acl 20

Total number of routes: 3

BGP local router ID is 192.168.1.62

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Path/Ogn

* > 5.5.5.5/32 127.0.0.1 0 32768 ?

* > 192.168.1.0 192.168.1.62 0 32768 ?

* > 192.168.1.62/32 127.0.0.1 0 32768 ?

# Display information about BGP IPv4 multicast routes that match BGP community list 100.

<Sysname> display bgp routing-table ipv4 multicast community-list 100

Total number of routes: 3

BGP local router ID is 192.168.1.62

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Path/Ogn

* > 5.5.5.5/32 127.0.0.1 0 32768 ?

* > 192.168.1.0 192.168.1.62 0 32768 ?

* > 192.168.1.62/32 127.0.0.1 0 32768 ?

# Display information about all BGP IPv4 multicast routes advertised to peer 192.168.1.139.

<Sysname> display bgp routing-table ipv4 multicast peer 192.168.1.139 advertised-routes

Total number of routes: 2

BGP local router ID is 192.168.1.62

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf Path/Ogn

* > 5.5.5.5/32 127.0.0.1 0 100 ?

* > 192.168.1.0 192.168.1.62 0 100 ?

# Display information about all BGP IPv4 multicast routes received from peer 192.168.1.139.

<Sysname> display bgp routing-table ipv4 multicast peer 192.168.1.139 received-routes

Total number of routes: 2

BGP local router ID is 192.168.1.62

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Path/Ogn

* >i 8.8.8.8/32 192.168.1.139 0 100 0 ?

* i 192.168.1.0 192.168.1.139 0 100 0 ?

# Display brief information about the BGP IPv4 multicast routes that have community attributes in BGP instance default.

<Sysname> display bgp routing-table ipv4 multicast community

Total number of routes: 3

BGP local router ID is 192.168.1.62

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Path/Ogn Community

* > 5.5.5.5/32 127.0.0.1 0 100 32768 ? <1:2>

* > 192.168.1.0/24 192.168.1.62 0 100 32768 ? <1:2>

* > 192.168.1.62/32 127.0.0.1 0 100 32768 ? <1:2>

# Display brief information about the BGP IPv4 multicast routes that have extended community attributes in BGP instance default.

<Sysname> display bgp routing-table ipv4 multicast ext-community

Total number of routes: 3

BGP local router ID is 192.168.1.62

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Ext-Community

* > 5.5.5.5/32 127.0.0.1 0 32768 <RT: 1:1>

* > 192.168.1.0 192.168.1.62 0 32768 <RT: 1:1>

* > 192.168.1.62/32 127.0.0.1 0 32768 <RT: 1:1>

Table 27 Command output

Field	Description
Status codes	Status codes: · * – valid—Valid route. · > – best—Optimal route. · d – dampened—Dampened route. · h – history—History route. · s – suppressed—Suppressed route. · S – stale—Stale route. · i – internal—Internal route. · e – external—External route. · a – additional-path—Add-Path optimal route.
Origin	Origin of the route: · i – IGP—Originated in the AS. The origin of routes advertised with the network command is IGP. · e – EGP—Learned through EGP. · ?– incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Network	Destination network address.
NextHop	Next hop IP address.
MED	MULTI_EXIT_DISC attribute.
LocPrf	Local preference value.
PrefVal	Preferred value of the route.
Path/Ogn	AS_PATH and ORIGIN attributes of the route: · AS_PATH—Records the ASs the route has passed. · ORIGIN—Identifies the origin of the route.
Community	Community attribute value.
Ext-Community	Extended community attribute value.

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# Display detailed information about BGP IPv4 multicast routes destined for network 5.5.5.5/32.

<Sysname> display bgp routing-table ipv4 multicast 5.5.5.5 32

BGP local router ID: 192.168.1.139

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 5.5.5.5/32:

From : 192.168.1.62 (192.168.1.62)

Rely nexthop : 192.168.1.62

Original nexthop: 192.168.1.62

OutLabel : NULL

RxPathID : 0x0

TxPathID : 0x0

AS-path : (null)

Origin : incomplete

Attribute value : MED 0, localpref 100, pref-val 0

State : valid, internal, best, delay

Originator : 176.1.1.2

Cluster list : 80

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

# Display community attribute information for the BGP IPv4 multicast routes with destination network 10.3.1.0/24.

<Sysname> display bgp routing-table ipv4 multicast 10.3.1.0 24 community

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 10.3.1.0/24:

Community: no-export

# Display extended community attribute information for the BGP IPv4 multicast routes with destination network 10.3.1.0/24.

<Sysname> display bgp routing-table ipv4 multicast 10.3.1.0 24 ext-community

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 10.3.1.0/24:

Ext-Community: <RT: 1:1>

# Display AS_PATH attribute information for the BGP IPv4 multicast routes with destination network 10.3.1.0/24.

<Sysname> display bgp routing-table ipv4 multicast 10.3.1.0 24 as-path

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 10.3.1.0/24:

As-path: 200

# Display CLUSTER_LIST attribute information for the BGP IPv4 multicast routes with destination network 10.3.1.0/24.

<Sysname> display bgp routing-table ipv4 multicast 10.3.1.0 24 cluster-list

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 10.3.1.0/24:

Cluster list: 80

Table 28 Command output

Field	Description
Paths	Number of routes: · available—Number of valid routes. · best—Number of optimal routes.
From	IP address of BGP peer that advertised the route.
Rely Nexthop	Next hop found by route recursion. If no next hop is found, this field displays not resolved.
Original nexthop	Original next hop of the route. If the route was obtained from a BGP update message, the original next hop is the next hop IP address in the message.
OutLabel	Outgoing label of the route.
RxPathID	Add-Path ID of received routes.
TxPathID	Add-Path ID of advertised routes.
AS-path	AS_PATH attribute of the route.
Community	Community attribute value.
Ext-Community	Extended community attribute value.
Origin	Origin of the route: · igp—Originated in the AS. The origin of routes advertised with the network command is IGP. · egp—Learned through EGP. · incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Attribute value	BGP path attributes: · MED—MED value. · localpref—Local preference value. · pref-val—Preferred value. · pre—Route preference.
State	Current state of the route: · valid. · internal. · external. · local. · synchronize. · best. · delay—The route will be delayed for optimal route selection. This field is displayed only in the detailed command output.
Originator	Router ID of the peer that advertised the route to the reflector.
Cluster list	CLUSTER_LIST attribute of the route.
IP precedence	IP precedence in the range of 0 to 7. N/A indicates that the route does not support this field.
QoS local ID	QoS local ID in the range of 1 to 4095. N/A indicates that the route does not support this field.
Traffic index	Traffic index in the range of 1 to 64. N/A indicates that the route does not support this field.

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# Display statistics for BGP IPv4 multicast routes advertised to peer 192.168.1.62.

<Sysname> display bgp routing-table ipv4 multicast peer 192.168.1.62 advertised-routes statistics

Advertised routes total: 2

# Display statistics for BGP IPv4 multicast routes received from peer 192.168.1.62.

<Sysname> display bgp routing-table ipv4 multicast peer 192.168.1.62 received-routes statistics

Received routes total: 2

Table 29 Command output

Field	Description
Advertised routes total	Total number of advertised routes.
Received routes total	Total number of received routes.

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# Display BGP IPv4 multicast route statistics.

<Sysname> display bgp routing-table ipv4 multicast statistics

Total number of routes: 5

# Display statistics about the BGP IPv4 multicast routes that have extended community attributes.

<Sysname> display bgp routing-table ipv4 multicast statistics ext-community

Total number of routes: 5

Table 30 Command output

Field	Description
Total number of routes	Total number of routes.

‌

# Display advertisement information for the BGP IPv4 multicast route destined for network 8.8.8.8/32.

<Sysname> display bgp routing-table ipv4 multicast 8.8.8.8 32 advertise-info

BGP local router ID: 192.168.1.139

Local AS number: 100

Paths: 1 best

BGP routing table information of 8.8.8.8/32(TxPathID:0):

Advertised to peers (1 in total):

192.168.1.62

Table 31 Command output

Field	Description
BGP local router ID	Local BGP router ID.
Local AS number	Local AS number.
Paths	Number of optimal routes to the destination.
BGP routing table information of 8.8.8.8/32(TxPathID:0)	Advertisement information for network 8.8.8.8/32.
Advertised to peers (1 in total)	Peers to which the network has been advertised.

‌

Related commands

ip as-path

ip community-list

display bgp routing-table ipv4 unicast

Use display bgp routing-table ipv4 unicast to display BGP IPv4 unicast routing information.

Syntax

display bgp [ instance instance-name ] routing-table ipv4 [ unicast ] [ vpn-instance vpn-instance-name ] [ ipv4-address [ { mask-length | mask } [ longest-match ] ] | ipv4-address [ mask-length | mask ] advertise-info | ipv4-address [ mask-length | mask ] { as-path | cluster-list | community | ext-community } | peer { ipv4-address | ipv6-address [ interface interface-type interface-number ] } { advertised-routes | received-routes } [ ipv4-address [ mask-length | mask ] | statistics ] | statistics ]

display bgp [ instance instance-name ] routing-table ipv4 [ unicast ] [ vpn-instance vpn-instance-name ] as-path-acl { as-path-acl-number | as-path-acl-name }

display bgp [ instance instance-name ] routing-table ipv4 [ unicast ] [ vpn-instance vpn-instance-name ] [ statistics ] community [ community-number&<1-32> | aa:nn&<1-32> ] [ internet | no-advertise | no-export | no-export-subconfed ] [ whole-match ]

display bgp [ instance instance-name ] routing-table ipv4 [ unicast ] [ vpn-instance vpn-instance-name ] [ statistics ] community-list { basic-community-list-number | adv-community-list-number | comm-list-name } [ whole-match ]

display bgp [ instance instance-name ] routing-table ipv4 [ unicast ] [ vpn-instance vpn-instance-name ] [ statistics ] ext-community [ rt route-target | soo site-of-origin ]&<1-32> [ whole-match ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP IPv4 unicast routing information for the default BGP instance.

ipv4-address: Specifies a destination network address.

mask-length: Specifies a mask length in the range of 0 to 32.

mask: Specifies a network mask in dotted decimal notation.

longest-match: Specifies longest match mode, which selects the longest matching route through the following steps:

1. ANDs the specified network address with the mask of each route.

2. Matches a route if the AND result is the same as the network address of the route and the mask of the route is shorter than or equal to the specified mask.

3. Selects the route with the longest mask among the matching routes.

advertise-info: Displays advertisement information for BGP IPv4 unicast routes.

as-path: Displays AS_PATH attribute information for BGP IPv4 unicast routes.

cluster-list: Displays CLUSTER_LIST attribute information for BGP IPv4 unicast routes.

community: Displays community attribute information for BGP IPv4 unicast routes or displays BGP IPv4 unicast routes that match the community number criterion specified for route filtering.

ext-community: Displays extended community attribute information for BGP IPv4 unicast routes or displays BGP IPv4 unicast routes that match the extended community attribute criterion specified for route filtering.

peer ipv4-address: Displays BGP IPv4 unicast routing information advertised to or received from the specified IPv4 peer.

peer ipv6-address: Displays BGP IPv4 unicast routing information advertised to or received from the specified IPv6 peer.

advertised-routes: Displays BGP IPv4 unicast routing information advertised to the specified peer.

received-routes: Displays BGP IPv4 unicast routing information received from the specified peer.

statistics: Displays BGP IPv4 unicast route statistics.

as-path-acl as-path-acl-number: Displays BGP IPv4 unicast routes that match the AS path list specified by its number in the range of 1 to 256.

as-path-acl as-path-acl-name: Displays BGP IPv4 unicast routes that match the AS path list specified by its name, a case-sensitive string of 1 to 51 characters. The AS path list name cannot contain only digits.

aa:nn&<1-32>: Specifies a community number in aa:nn format. Both aa and nn are in the range of 0 to 65535. &<1-32> indicates that a maximum of 32 numbers can be specified.

internet: Displays BGP IPv4 unicast routes that have the INTERNET community attribute. Routes with this attribute can be advertised to all BGP peers. By default, all routes have this attribute.

no-advertise: Displays BGP IPv4 unicast routes that have the NO_ADVERTISE community attribute. Routes with this attribute cannot be advertised to any peers.

no-export: Displays BGP IPv4 unicast routes that have the NO_EXPORT community attribute. Routes with this attribute cannot be advertised outside the local AS or confederation, but can be advertised to other sub-ASs in the confederation.

no-export-subconfed: Displays BGP IPv4 unicast routes that have the NO_EXPORT_SUBCONFED community attribute. Routes with this attribute cannot be advertised outside the local AS or to other sub-ASs in the confederation.

whole-match: Displays BGP IPv4 unicast routes that exactly match the specified community list, community numbers, or extended community attributes. If you do not specify this keyword, the command displays BGP IPv4 unicast routes that meet one of the following requirements:

· The community attributes of the routes include the specified community list.

· The community attributes of the routes include the specified community numbers.

· The extended community attributes of the routes include the specified extended community attributes.

community-list: Displays BGP IPv4 unicast routes that match a community list.

basic-community-list-number: Specifies a basic community list by its number in the range of 1 to 99.

comm-list-name: Specifies a community list by its name, a case-sensitive string of 1 to 63 characters.

adv-community-list-number: Specifies an advanced community list by its number in the range of 100 to 199.

rt route-target: Specifies a Route Target (RT) attribute value. The value for this argument is a string of 3 to 24 characters.

soo site-of-origin: Specifies a Site of Origin (SoO) attribute value. The value for this argument is a string of 3 to 24 characters.

&<1-32>: Indicates that you can specify a maximum of 32 extended community attributes.

Usage guidelines

If you do not specify any parameters, this command displays brief information about all BGP IPv4 unicast routes.

If you specify the ipv4-address mask or ipv4-address mask-length argument and do not specify the longest-match keyword, this command displays information about the BGP IPv4 unicast route that matches both the specified destination network address and the mask (or mask length).

This command displays BGP IPv4 unicast routing information regardless of whether the unicast keyword is specified.

When you specify a RT or SoO attribute, use one of the following formats:

· 16-bit AS number:32-bit user-defined number. For example, 101:3. The value range is 0 to 65535 for an AS number and is 0 to 4294967295 for a user-defined number.

· 32-bit IP address:16-bit user-defined number. For example, 192.168.122.15:1. The value range is 0 to 65535 for a user-defined number.

· 32-bit AS number:16-bit user-defined number. For example, 70000:3. The value range is 65536 to 4294967295 for an AS number and is 0 to 65535 for a user-defined number.

· 32-bit IP address/IPv4 address mask length:16-bit user-defined number. For example, 192.168.122.15/24:1.

· 32-bit AS number in dotted format:16-bit user-defined number. For example, 65535.65535:1.

When you specify none of the community-number, aa:nn, internet, no-advertise, no-export, and no-export-subconfed parameters, this command displays BGP IPv4 unicast routes that have community attributes. In this situation, the whole-match keyword does not take effect.

When you specify neither of the rt and soo parameters, this command displays BGP IPv4 unicast routes that have extended community attributes. In this situation, the whole-match keyword does not take effect.

Examples

# Display brief information about all BGP IPv4 unicast routes.

<Sysname> display bgp routing-table ipv4

Total number of routes: 4

BGP local router ID is 192.168.100.1

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Path/Ogn

* > 10.2.1.0/24 10.2.1.1 0 0 i

e 10.2.1.2 0 0 4294967295

4294967294 4294967293 4294967292 4294967291 4294967290 4294967215 4294967225 4294967235 4294967245 4294967295 4294967294 4294967293 4294967292 4294967291 4294967290... i

* > 192.168.1.0 192.168.1.135 0 0 i

* e 10.2.1.2 0 0 200i

# Display information about BGP IPv4 unicast routes that match AS path list 1.

<Sysname> display bgp routing-table ipv4 as-path-acl 1

Total number of routes: 1

BGP local router ID is 2.2.2.2

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Path/Ogn

* >e 30.1.1.0/24 20.1.1.1 0 200i

# Display information about all public BGP IPv4 unicast routes advertised to peer 10.2.1.2.

<Sysname> display bgp routing-table ipv4 peer 10.2.1.2 advertised-routes

Total number of routes: 2

BGP local router ID is 192.168.100.1

Status codes: * - valid, > - best, d - damped, h - history,

s - suppressed, S - Stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Path/Ogn

* > 10.2.1.0/24 10.2.1.1 0 0 i

* > 192.168.1.0 192.168.1.135 0 0 i

# Display information about all public BGP IPv4 unicast routes received from peer 10.2.1.2.

<Sysname> display bgp routing-table ipv4 peer 10.2.1.2 received-routes

Total number of routes: 2

BGP local router ID is 192.168.100.1

Status codes: * - valid, > - best, d - damped, h - history,

s - suppressed, S - Stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Path/Ogn

e 10.2.1.0/24 10.2.1.2 0 0 200i

* e 192.168.1.0 10.2.1.2 0 0 200i

# Display information about the public-network BGP IPv4 unicast routes that have community attributes in BGP instance default.

<Sysname> display bgp routing-table ipv4 community

Total number of routes: 2

BGP local router ID is 192.168.100.1

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Community

* > 10.2.1.0/24 10.2.1.1 0 0 <1:1>

* > 192.168.1.0 192.168.1.135 0 0 <1:2>

# Display information about the public-network BGP IPv4 unicast routes that have extended community attributes in BGP instance default.

<Sysname> dis bgp routing-table ipv4 ext-community

Total number of routes: 1

BGP local router ID is 192.168.184.56

Status codes: * - valid, > - best, d - dampened, h - history,

s - suppressed, S - stale, i - internal, e - external

a - additional-path

Origin: i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Ext-Community

* >i 9.1.1.0/24 120.1.1.1 0 100 0 <RT: 1:1>

Table 32 Command output

Field	Description
Status codes	Status codes: · * – valid—Valid route. · > – best—Optimal route. · d – dampened—Dampened route. · h – history—History route. · s – suppressed—Suppressed route. · S – stale—Stale route. · i – internal—Internal route. · e – external—External route. · a – additional-path—Add-Path optimal route.
Origin	Origin of the route: · i – IGP—Originated in the AS. The origin of routes advertised with the network command is IGP. · e – EGP—Learned through EGP. · ?– incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Network	Destination network address.
NextHop	Next hop IP address.
MED	MULTI_EXIT_DISC attribute.
LocPrf	Local preference value.
PrefVal	Preferred value of the route.
Path/Ogn	AS_PATH and ORIGIN attributes of the route: · AS_PATH—Records the ASs the route has passed, which avoids routing loops. This field can display only 16 AS numbers. Exceeding AS numbers are omitted. You can view the omitted AS numbers by displaying the detailed route information. · ORIGIN—Identifies the origin of the route.
Community	Community attribute value.
Ext-Community	Extended community attribute value.

‌

# Display detailed information about BGP IPv4 unicast routes destined for network 10.2.1.0/24.

<Sysname> display bgp routing-table ipv4 10.2.1.0 24

BGP local router ID: 192.168.100.1

Local AS number: 100

Paths: 2 available, 1 best

BGP routing table information of 10.2.1.0/24:

Imported route.

Original nexthop: 10.2.1.1

OutLabel : NULL

Ext-Community : <HostRoute>, <IP Mobility: Flag 0, SeqNum 3>

RxPathID : 0x0

TxPathID : 0x0

AS-path : (null)

Origin : igp

Attribute value : MED 0, pref-val 0, pre 0

State : valid, local, best, delay, bgp-rib-only

Originator : 176.1.1.2

Cluster list : 80

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

Tunnel policy : NULL

Rely tunnel IDs : N/A

From : 10.2.1.2 (192.168.100.2)

Rely nexthop : not resolved

Original nexthop: 10.2.1.2

OutLabel : NULL

RxPathID : 0x0

TxPathID : 0x0

AS-path : 200

Origin : igp

Attribute value : MED 0, pref-val 0, pre 255

State : external

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

Tunnel policy : NULL

Rely tunnel IDs : N/A

# Display detailed information about the BGP IPv4 unicast route destined for address 1.1.1.1/32.

<Sysname> display bgp routing-table ipv4 1.1.1.1 32

BGP local router ID: 192.168.100.1

Local AS number: 100

Paths: 2 available, 1 best

BGP routing table information of 1.1.1.1/32:

From : 10.2.1.1 (192.168.100.3)

Rely nexthop : 10.2.1.1

Original nexthop: 10.2.1.1

OutLabel : 16201

RxPathID : 0x0

TxPathID : 0x0

AS-path : (null)

Origin : igp

PrefixSID : Label index 201

Attribute value : MED 0, pref-val 0, pre 0

State : valid, local, best, delay

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

Tunnel policy : NULL

Rely tunnel IDs : N/A

Backup route.

From : 10.2.1.2 (192.168.100.2)

Rely nexthop : 10.2.1.2

Original nexthop: 10.2.1.2

OutLabel : NULL

RxPathID : 0x0

TxPathID : 0x0

AS-path : 200

Origin : igp

Attribute value : MED 0, pref-val 0, pre 255

State : external

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

Tunnel policy : NULL

Rely tunnel IDs : N/A

# Display community attribute information for the BGP IPv4 unicast routes with destination network 10.3.1.0/24.

<Sysname> display bgp routing-table ipv4 10.3.1.0 24 community

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 10.3.1.0/24:

Community: no-export

# Display extended community attribute information for the BGP IPv4 unicast routes with destination network 10.3.1.0/24.

<Sysname> display bgp routing-table ipv4 10.3.1.0 24 ext-community

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 10.3.1.0/24:

Ext-Community: <RT: 1:1>

# Display AS_PATH attribute information for the BGP IPv4 unicast routes with destination network 10.3.1.0/24.

<Sysname> display bgp routing-table ipv4 10.3.1.0 24 as-path

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 10.3.1.0/24:

As-path: 200

# Display CLUSTER_LIST attribute information for the BGP IPv4 unicast routes with destination network 10.3.1.0/24.

<Sysname> display bgp routing-table ipv4 10.3.1.0 24 cluster-list

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 10.3.1.0/24:

Cluster list: 80

Table 33 Command output

Field	Description
Paths	Number of routes: · available—Number of valid routes. · best—Number of optimal routes.
Original nexthop	Original next hop of the route. If the route was obtained from a BGP update message, the original next hop is the next hop IP address in the message.
OutLabel	Outgoing label of the route.
Ext-Community	Extended community attribute: · HostRoute—Host route. · IP Mobility—IP migration attribute. Flag indicates whether the IP address can be migrated. 1 indicates that the IP address cannot be migrated and 0 indicates that the IP address can be migrated. SeqNum represents the host migration serial number. The larger the serial number, the later the migration.
RxPathID	Add-Path ID of received routes.
TxPathID	Add-Path ID of advertised routes.
AS-path	AS_PATH attribute of the route, which records the ASs the route has passed and avoids routing loops.
Community	Community attribute value.
Ext-Community	Extended community attribute value.
Origin	Origin of the route: · igp—Originated in the AS. The origin of routes advertised with the network command is IGP. · egp—Learned through EGP. · incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Attribute value	BGP path attributes: · MED—MED value. · localpref—Local preference value. · pref-val—Preferred value. · pre—Route preference.
State	Current state of the route: · valid. · internal. · external. · local. · synchronize. · best. · localredist—If the state of a route is localredist, the route can be one of the following routes: ¡ Route that is redistributed from another local VPN instance or the public instance to the current VPN instance. ¡ Route that is redistributed from a VPN instance to the public instance. · remoteredist—Route that is received from a peer and is redistributed to a local VPN instance. · delay—The route will be delayed for optimal route selection. This field is displayed only in the detailed command output. · bgp-rib-only—The route will not be flushed to the routing table. This field is displayed only in the detailed command output.
Originator	Router ID of the peer that advertised the route to the reflector.
Cluster list	CLUSTER_LIST attribute of the route.
From	IP address of the BGP peer that advertised the route.
Rely Nexthop	Next hop found by route recursion. If no next hop is found, this field displays not resolved.
IP precedence	IP precedence in the range of 0 to 7. N/A indicates that the route does not support this field.
QoS local ID	QoS local ID in the range of 1 to 4095. N/A indicates that the route does not support this field.
Traffic index	Traffic index in the range of 1 to 64. N/A indicates that the route does not support this field.
Connector	Connector attribute in Type 1, Value RD:IPv4 address format. · The RD argument represents the route target of the route. · The IPv4 address argument represents the IPv4 address of the source PE. When the MVPN networking model is MDT-based MVPN inter-AS option B, this attribute transmits source PE address information used for RPF check on PEs. When a route does not carry the Connector attribute, this field is not displayed.
Tunnel policy	Tunnel policy that takes effect. NULL indicates that no tunnel policy takes effect.
Rely Tunnel IDs	Tunnel index IDs after route recursion. This field displays multiple tunnel index IDs if ECMP tunnels exist and displays N/A if no tunnels are found by route recursion.

‌

# Display statistics for public BGP IPv4 unicast routes advertised to peer 10.2.1.2.

<Sysname> display bgp routing-table ipv4 peer 10.2.1.2 advertised-routes statistics

Advertised routes total: 2

# Display statistics for public BGP IPv4 unicast routes received from peer 10.2.1.2.

<Sysname> display bgp routing-table ipv4 peer 10.2.1.2 received-routes statistics

Received routes total: 2

Table 34 Command output

Field	Description
Advertised routes total	Total number of advertised routes.
Received routes total	Total number of received routes.

‌

# Display BGP IPv4 unicast route statistics.

<Sysname> display bgp routing-table ipv4 statistics

Total number of routes: 4

# Display statistics about the BGP IPv4 unicast routes that have community attributes.

<Sysname> display bgp routing-table ipv4 statistics community

Total number of routes: 1

Table 35 Command output

Field	Description
Total number of routes	Total number of routes.

‌

# Display advertisement information for the BGP IPv4 unicast route destined for network 10.2.1.0/24.

<Sysname> display bgp routing-table ipv4 10.2.1.0 24 advertise-info

BGP local router ID: 192.168.100.1

Local AS number: 100

Paths: 1 best

BGP routing table information of 10.2.1.0/24(TxPathID:0):

Advertised to peers (1 in total):

10.2.1.2

Table 36 Command output

Field	Description
BGP local router ID	Local BGP router ID.
Local AS number	Local AS number.
Paths	Number of optimal routes to the destination.
BGP routing table information of 10.2.1.0/24(TxPathID:0)	Advertisement information for network 10.2.1.0/24.
Advertised to peers (1 in total)	Peers to which the network has been advertised.

‌

Related commands

ip as-path

ip community-list

display bgp routing-table ipv6 multicast

Use display bgp routing-table ipv6 multicast to display BGP IPv6 multicast routing information.

Syntax

display bgp [ instance instance-name ] routing-table ipv6 multicast [ ipv6-address prefix-length [ advertise-info ] | ipv6-address prefix-length { as-path | cluster-list | community | ext-community } | peer ipv6-address { advertised-routes | received-routes } [ ipv6-address prefix-length | statistics ] | statistics ]

display bgp [ instance instance-name ] routing-table ipv6 multicast as-path-acl { as-path-acl-number | as-path-acl-name }

display bgp [ instance instance-name ] routing-table ipv6 multicast [ statistics ] community [ community-number&<1-32> | aa:nn&<1-32> ] [ internet | no-advertise | no-export | no-export-subconfed ] [ whole-match ]

display bgp [ instance instance-name ] routing-table ipv6 multicast [ statistics ] community-list { basic-community-list-number | adv-community-list-number | comm-list-name } [ whole-match ]

display bgp [ instance instance-name ] routing-table ipv6 multicast [ statistics ] ext-community [ rt route-target | soo site-of-origin ]&<1-32> [ whole-match ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP IPv6 multicast routing information for the default BGP instance.

ipv6-address prefix-length: Specifies the destination network address and prefix length. The value range for the prefix-length argument is 0 to 128. If you do not specify this argument, the command displays brief information about all BGP IPv6 multicast routing information.

advertise-info: Displays advertisement information for BGP IPv6 multicast routes. If you do not specify this keyword, the command displays the BGP IPv6 multicast routing table.

as-path: Displays AS_PATH attribute information for BGP IPv6 multicast routes.

cluster-list: Displays CLUSTER_LIST attribute information for BGP IPv6 multicast routes.

community: Displays community attribute information for BGP IPv6 multicast routes or displays BGP IPv6 multicast routes that match the community number criterion specified for route filtering.

ext-community: Displays extended community attribute information for BGP IPv6 multicast routes or displays BGP IPv6 multicast routes that match the extended community attribute criterion specified for route filtering.

peer: Displays BGP IPv6 multicast routing information advertised to or received from the specified peer.

ipv6-address: Specifies a BGP peer by its IPv6 address.

advertised-routes: Displays BGP IPv6 multicast routing information advertised to the specified peer.

received-routes: Displays BGP IPv6 multicast routing information received from the specified peer.

statistics: Displays BGP IPv6 multicast route statistics.

as-path-acl as-path-acl-number: Displays BGP IPv6 multicast routes that match the AS path list specified by its number in the range of 1 to 256.

as-path-acl as-path-acl-name: Displays BGP IPv6 multicast routes that match the AS path list specified by its name, a case-sensitive string of 1 to 51 characters. The AS path list name cannot contain only digits.

aa:nn&<1-32>: Specifies a community number in aa:nn format. Both aa and nn are in the range of 0 to 65535. &<1-32> indicates that a maximum of 32 numbers can be specified.

internet: Displays BGP IPv6 multicast routes that have the INTERNET community attribute. Routes with this attribute can be advertised to all BGP peers. By default, all routes have this attribute.

no-advertise: Displays BGP IPv6 multicast routes that have the NO_ADVERTISE community attribute. Routes with this attribute cannot be advertised to any peers.

no-export: Displays BGP IPv6 multicast routes that have the NO_EXPORT community attribute. Routes with this attribute cannot be advertised outside the local AS or confederation, but can be advertised to other sub-ASs in the confederation.

no-export-subconfed: Displays BGP IPv6 multicast routes that have the NO_EXPORT_SUBCONFED community attribute. Routes with this attribute cannot be advertised outside the local AS or to other sub-ASs in the confederation.

whole-match: Displays BGP IPv6 multicast routes that exactly match the specified community list, community numbers, or extended community attributes. If you do not specify this keyword, the command displays BGP IPv6 multicast routes that meet one of the following requirements:

· The community attributes of the routes include the specified community list.

· The community attributes of the routes include the specified community numbers.

· The extended community attributes of the routes include the specified extended community attributes.

community-list: Displays BGP IPv6 multicast routes that match a community list.

basic-community-list-number: Specifies a basic community list by its number in the range of 1 to 99.

comm-list-name: Specifies a community list by its name, a case-sensitive string of 1 to 63 characters.

adv-community-list-number: Specifies an advanced community list by its number in the range of 100 to 199.

rt route-target: Specifies a Route Target (RT) attribute value. The value for this argument is a string of 3 to 24 characters.

soo site-of-origin: Specifies a Site of Origin (SoO) attribute value. The value for this argument is a string of 3 to 24 characters.

&<1-32>: Indicates that you can specify a maximum of 32 extended community attributes.

Usage guidelines

When you specify a RT or SoO attribute, use one of the following formats:

· 16-bit AS number:32-bit user-defined number. For example, 101:3. The value range is 0 to 65535 for an AS number and is 0 to 4294967295 for a user-defined number.

· 32-bit IP address:16-bit user-defined number. For example, 192.168.122.15:1. The value range is 0 to 65535 for a user-defined number.

· 32-bit AS number:16-bit user-defined number. For example, 70000:3. The value range is 65536 to 4294967295 for an AS number and is 0 to 65535 for a user-defined number.

· 32-bit IP address/IPv4 address mask length:16-bit user-defined number. For example, 192.168.122.15/24:1.

· 32-bit AS number in dotted format:16-bit user-defined number. For example, 65535.65535:1.

When you specify none of the community-number, aa:nn, internet, no-advertise, no-export, and no-export-subconfed parameters, this command displays BGP IPv6 multicast routes that have community attributes. In this situation, the whole-match keyword does not take effect.

When you specify neither of the rt and soo parameters, this command displays BGP IPv6 multicast routes that have extended community attributes. In this situation, the whole-match keyword does not take effect.

Examples

# Display brief information about all BGP IPv6 multicast routes.

<Sysname> display bgp routing-table ipv6 multicast

Total number of routes: 5

BGP local router ID is 192.168.1.139

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* > Network : 1:: PrefixLen : 64

NextHop : :: LocPrf :

PrefVal : 32768 OutLabel : NULL

MED : 0

Path/Ogn: ?

* i Network : 1:: PrefixLen : 64

NextHop : 1::1 LocPrf : 100

PrefVal : 0 OutLabel : NULL

MED : 0

Path/Ogn: ?

* > Network : 1::2 PrefixLen : 128

NextHop : ::1 LocPrf :

PrefVal : 32768 OutLabel : NULL

MED : 0

Path/Ogn: ?

* > Network : 2::2 PrefixLen : 128

NextHop : ::1 LocPrf :

PrefVal : 32768 OutLabel : NULL

MED : 0

Path/Ogn: ?

* >i Network : 5::5 PrefixLen : 128

NextHop : 1::1 LocPrf : 100

PrefVal : 0 OutLabel : NULL

MED : 0

Path/Ogn: ?

# Display information about BGP IPv6 multicast routes that match AS path list 1.

<Sysname> display bgp routing-table ipv6 multicast as-path-acl 1

Total number of routes: 5

BGP local router ID is 192.168.1.139

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* > Network : 1:: PrefixLen : 64

NextHop : :: LocPrf :

PrefVal : 32768 OutLabel : NULL

MED : 0

Path/Ogn: ?

* i Network : 1:: PrefixLen : 64

NextHop : 1::1 LocPrf : 100

PrefVal : 0 OutLabel : NULL

MED : 0

Path/Ogn: ?

* > Network : 1::2 PrefixLen : 128

NextHop : ::1 LocPrf :

PrefVal : 32768 OutLabel : NULL

MED : 0

Path/Ogn: ?

* > Network : 2::2 PrefixLen : 128

NextHop : ::1 LocPrf :

PrefVal : 32768 OutLabel : NULL

MED : 0

Path/Ogn: ?

* >i Network : 5::5 PrefixLen : 128

NextHop : 1::1 LocPrf : 100

PrefVal : 0 OutLabel : NULL

MED : 0

Path/Ogn: ?

# Display information about BGP IPv6 multicast routes that match BGP community list 100.

<Sysname> display bgp routing-table ipv6 multicast community-list 100

Total number of routes: 5

BGP local router ID is 192.168.1.139

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* > Network : 1:: PrefixLen : 64

NextHop : :: LocPrf :

PrefVal : 32768 OutLabel : NULL

MED : 0

Path/Ogn: ?

* i Network : 1:: PrefixLen : 64

NextHop : 1::1 LocPrf : 100

PrefVal : 0 OutLabel : NULL

MED : 0

Path/Ogn: ?

* > Network : 1::2 PrefixLen : 128

NextHop : ::1 LocPrf :

PrefVal : 32768 OutLabel : NULL

MED : 0

Path/Ogn: ?

* > Network : 2::2 PrefixLen : 128

NextHop : ::1 LocPrf :

PrefVal : 32768 OutLabel : NULL

MED : 0

Path/Ogn: ?

* >i Network : 5::5 PrefixLen : 128

NextHop : 1::1 LocPrf : 100

PrefVal : 0 OutLabel : NULL

MED : 0

Path/Ogn: ?

# Display information about all BGP IPv6 multicast routes advertised to peer 1::1.

<Sysname> display bgp routing-table ipv6 multicast peer 1::1 advertised-routes

Total number of routes: 2

BGP local router ID is 192.168.1.139

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* > Network : 1:: PrefixLen : 64

NextHop : :: LocPrf : 100

MED : 0 OutLabel : NULL

Path/Ogn: ?

* > Network : 2::2 PrefixLen : 128

NextHop : ::1 LocPrf : 100

MED : 0 OutLabel : NULL

Path/Ogn: ?

# Display information about all BGP IPv6 multicast routes received from peer 1::1.

<Sysname> display bgp routing-table ipv6 multicast peer 1::1 received-routes

Total number of routes: 2

BGP local router ID is 192.168.1.139

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* i Network : 1:: PrefixLen : 64

NextHop : 1::1 LocPrf : 100

PrefVal : 0 OutLabel : NULL

MED : 0

Path/Ogn: ?

* >i Network : 5::5 PrefixLen : 128

NextHop : 1::1 LocPrf : 100

PrefVal : 0 OutLabel : NULL

MED : 0

Path/Ogn: ?

# Display information about the public-network BGP IPv6 multicast routes that have community attributes in BGP instance default.

<Sysname> display bgp routing-table ipv6 multicast community

Total number of routes: 1

BGP local router ID is 192.168.1.139

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* i Network : 1:: PrefixLen : 64

NextHop : 1::1 LocPrf : 100

PrefVal : 0 OutLabel : NULL

MED : 0

Community: <1:1>

# Display information about the public-network BGP IPv6 multicast routes that have extended community attributes in BGP instance default.

<Sysname> display bgp routing-table ipv6 multicast ext-community

Total number of routes: 5

BGP local router ID is 192.168.1.139

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* > Network : 1:: PrefixLen : 64

NextHop : :: LocPrf :

PrefVal : 32768 OutLabel : NULL

MED : 0

Ext-Community: <RT 1:1>

Table 37 Command output

Field	Description
Status codes	Status codes: · * – valid—Valid route. · > – best—Optimal route. · d – dampened—Dampened route. · h – history—History route. · s – suppressed—Suppressed route. · S – stale—Stale route. · i – internal—Internal route. · e – external—External route. · a – additional-path—Add-Path optimal route.
Origin	Origin of the route: · i – IGP—Originated in the AS. The origin of routes advertised with the network command is IGP. · e – EGP—Learned through EGP. · ?– incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Network	Destination network address.
PrefixLen	Prefix length of the destination network address.
NextHop	Next hop IP address.
LocPrf	Local preference value.
PrefVal	Preferred value of the route.
OutLabel	Outgoing label of the route.
MED	MULTI_EXIT_DISC attribute.
Path/Ogn	AS_PATH and ORIGIN attributes of the route: · AS_PATH—Records the ASs the route has passed, which avoids routing loops. · ORIGIN—Identifies the origin of the route.
Community	Community attribute value.
Ext-Community	Extended community attribute value.

‌

# Display detailed information about BGP IPv6 multicast routes destined for network 2::2/128.

<Sysname> display bgp routing-table ipv6 multicast 2::2 128

BGP local router ID: 192.168.1.139

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 2::2/128:

Imported route.

Original nexthop: ::1

OutLabel : NULL

RxPathID : 0x0

TxPathID : 0x0

AS-path : (null)

Origin : incomplete

Attribute value : MED 0, pref-val 32768

State : valid, local, best, delay

Originator : 176.1.1.2

Cluster list : 80

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

# Display community attribute information for the BGP IPv6 multicast routes with destination network 2::2/128.

<Sysname> display bgp routing-table ipv6 multicast 2::2 128 community

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 2::2/128:

Community: no-export

# Display extended community attribute information for the BGP IPv6 multicast routes with destination network 2::2/128.

<Sysname> display bgp routing-table ipv6 multicast 2::2 128 ext-community

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 2::2/128:

Ext-Community: <RT: 1:1>

# Display AS_PATH attribute information for the BGP IPv6 multicast routes with destination network 2::2/128.

<Sysname> display bgp routing-table ipv6 multicast 2::2 128 as-path

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 2::2/128

As-path: 200

# Display CLUSTER_LIST attribute information for the BGP IPv6 multicast routes with destination network 2::2/128.

<Sysname> display bgp routing-table ipv6 multicast 2::2 128 cluster-list

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 2::2/128:

Cluster list: 80

Table 38 Command output

Field	Description
Paths	Number of routes: · available—Number of valid routes. · best—Number of optimal routes.
Original nexthop	Original next hop of the route. If the route was obtained from a BGP update message, the original next hop is the next hop IP address in the message.
OutLabel	Outgoing label of the route.
RxPathID	Add-Path ID of received routes.
TxPathID	Add-Path ID of advertised routes.
AS-path	AS_PATH attribute of the route, which records the ASs the route has passed and avoids routing loops.
Community	Community attribute value.
Ext-Community	Extended community attribute value.
Origin	Origin of the route: · igp—Originated in the AS. The origin of routes advertised with the network command is IGP. · egp—Learned through EGP. · incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Attribute value	BGP path attributes: · MED—MED value. · localpref—Local preference value. · pref-val—Preferred value. · pre—Route preference.
State	Current state of the route: · valid. · internal. · external. · local. · synchronize. · best. · delay—The route will be delayed for optimal route selection. This field is displayed only in the detailed command output.
Originator	Router ID of the peer that advertised the route to the reflector.
Cluster list	CLUSTER_LIST attribute of the route.
From	IP address of the BGP peer that advertised the route.
Rely Nexthop	Next hop found by route recursion. If no next hop is found, this field displays not resolved.
IP precedence	IP precedence in the range of 0 to 7. N/A indicates that the route does not support this field.
QoS local ID	QoS local ID in the range of 1 to 4095. N/A indicates that the route does not support this field.
Traffic index	Traffic index in the range of 1 to 64. N/A indicates that the route does not support this field.

‌

# Display advertisement information for BGP IPv6 multicast routes destined for network 2::2/128.

<Sysname> display bgp routing-table ipv6 multicast 2::2 128 advertise-info

BGP local router ID: 192.168.1.139

Local AS number: 100

Paths: 1 best

BGP routing table information of 2::2/128(TxPathID:0):

Advertised to peers (1 in total):

1::1

Table 39 Command output

Field	Description
BGP local router ID	Local BGP router ID.
Local AS number	Local AS number.
Paths	Number of optimal routes to the destination.
BGP routing table information of 2::2/128(TxPathID:0)	Advertisement information for network 2::2/128.
Advertised to peers (1 in total)	Peers to which the network has been advertised.

‌

# Display statistics for BGP IPv6 multicast routes advertised to peer 1::1.

<Sysname> display bgp routing-table ipv6 multicast peer 1::1 advertised-routes statistics

Advertised routes total: 2

# Display statistics for BGP IPv6 multicast routes received from peer 1::1.

<Sysname> display bgp routing-table ipv6 multicast peer 1::1 received-routes statistics

Received routes total: 2

Table 40 Command output

Field	Description
Advertised routes total	Total number of advertised routes.
Received routes total	Total number of received routes.

‌

# Display BGP IPv6 multicast route statistics.

<Sysname> display bgp routing-table ipv6 multicast statistics

Total number of routes: 5

# Display statistics about the BGP IPv6 multicast routes that have community attributes.

<Sysname> display bgp routing-table ipv6 multicast statistics community

Total number of routes: 5

Table 41 Command output

Field	Description
Total number of routes	Total number of routes.

‌

Related commands

ip as-path

ip community-list

display bgp routing-table ipv6 unicast

Use display bgp routing-table ipv6 unicast to display BGP IPv6 unicast routing information.

Syntax

display bgp [ instance instance-name ] routing-table ipv6 [ unicast ] [ vpn-instance vpn-instance-name ] [ ipv6-address prefix-length [ advertise-info ] | ipv6-address prefix-length { as-path | cluster-list | community | ext-community } | peer ipv6-address { advertised-routes | received-routes } [ ipv6-address prefix-length | statistics ] | statistics ]

display bgp [ instance instance-name ] routing-table ipv6 [ unicast ] [ vpn-instance vpn-instance-name ] peer { ipv4-address | link-local-address interface interface-type interface-number } { advertised-routes | received-routes } [ ipv6-address prefix-length | statistics ]

display bgp [ instance instance-name ] routing-table ipv6 [ unicast ] [ vpn-instance vpn-instance-name ] as-path-acl { as-path-acl-number | as-path-acl-name }

display bgp [ instance instance-name ] routing-table ipv6 [ unicast ] [ vpn-instance vpn-instance-name ] [ statistics ] community [ community-number&<1-32> | aa:nn&<1-32> ] [ internet | no-advertise | no-export | no-export-subconfed ] [ whole-match ]

display bgp [ instance instance-name ] routing-table ipv6 [ unicast ] [ vpn-instance vpn-instance-name ] [ statistics ] community-list { basic-community-list-number | adv-community-list-number | comm-list-name } [ whole-match ]

display bgp [ instance instance-name ] routing-table ipv6 [ unicast ] [ vpn-instance vpn-instance-name ] [ statistics ] ext-community [ rt route-target | soo site-of-origin ]&<1-32> [ whole-match ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP IPv6 unicast routing information for the default BGP instance.

advertise-info: Displays advertisement information for BGP IPv6 unicast routes. If you do not specify this keyword, the command displays the BGP IPv6 unicast routing table.

as-path: Displays AS_PATH attribute information for BGP IPv6 unicast routes.

cluster-list: Displays CLUSTER_LIST attribute information for BGP IPv6 unicast routes.

community: Displays community attribute information for BGP IPv6 unicast routes or displays BGP IPv6 unicast routes that match the community number criterion specified for route filtering.

ext-community: Displays extended community attribute information for BGP IPv6 unicast routes or displays BGP IPv6 unicast routes that match the extended community attribute criterion specified for route filtering.

peer: Displays BGP IPv6 unicast routing information advertised to or received from the specified peer.

ipv4-address: Specifies a BGP peer by its IPv4 address.

ipv6-address: Specifies a BGP peer by its IPv6 address.

advertised-routes: Displays BGP IPv6 unicast routing information advertised to the specified peer.

received-routes: Displays BGP IPv6 unicast routing information received from the specified peer.

statistics: Displays BGP IPv6 unicast route statistics.

as-path-acl as-path-acl-number: Displays BGP IPv6 unicast routes that match the AS path list specified by its number in the range of 1 to 256.

as-path-acl as-path-acl-name: Displays BGP IPv6 unicast routes that match the AS path list specified by its name, a case-sensitive string of 1 to 51 characters. The AS path list name cannot contain only digits.

aa:nn&<1-32>: Specifies a community number in aa:nn format. Both aa and nn are in the range of 0 to 65535. &<1-32> indicates that a maximum of 32 numbers can be specified.

internet: Displays BGP IPv6 unicast routes that have the INTERNET community attribute. Routes with this attribute can be advertised to all BGP peers. By default, all routes have this attribute.

no-advertise: Displays BGP IPv6 unicast routes that have the NO_ADVERTISE community attribute. Routes with this attribute cannot be advertised to any peers.

no-export: Displays BGP IPv6 unicast routes that have the NO_EXPORT community attribute. Routes with this attribute cannot be advertised outside the local AS or confederation, but can be advertised to other sub-ASs in the confederation.

no-export-subconfed: Displays BGP IPv6 unicast routes that have the NO_EXPORT_SUBCONFED community attribute. Routes with this attribute cannot be advertised outside the local AS or to other sub-ASs in the confederation.

whole-match: Displays BGP IPv6 unicast routes that exactly match the specified community list, community numbers, or extended community attributes. If you do not specify this keyword, the command displays BGP IPv6 unicast routes that meet one of the following requirements:

· The community attributes of the routes include the specified community list.

· The community attributes of the routes include the specified community numbers.

· The extended community attributes of the routes include the specified extended community attributes.

community-list: Displays BGP IPv6 unicast routes that match a community list.

basic-community-list-number: Specifies a basic community list by its number in the range of 1 to 99.

comm-list-name: Specifies a community list by its name, a case-sensitive string of 1 to 63 characters.

adv-community-list-number: Specifies an advanced community list by its number in the range of 100 to 199.

rt route-target: Specifies a Route Target (RT) attribute value. The value for this argument is a string of 3 to 24 characters.

soo site-of-origin: Specifies a Site of Origin (SoO) attribute value. The value for this argument is a string of 3 to 24 characters.

&<1-32>: Indicates that you can specify a maximum of 32 extended community attributes.

Usage guidelines

This command displays BGP IPv6 unicast routing information regardless of whether the unicast keyword is specified.

When you specify a RT or SoO attribute, use one of the following formats:

· 16-bit AS number:32-bit user-defined number. For example, 101:3. The value range is 0 to 65535 for an AS number and is 0 to 4294967295 for a user-defined number.

· 32-bit IP address:16-bit user-defined number. For example, 192.168.122.15:1. The value range is 0 to 65535 for a user-defined number.

· 32-bit AS number:16-bit user-defined number. For example, 70000:3. The value range is 65536 to 4294967295 for an AS number and is 0 to 65535 for a user-defined number.

· 32-bit IP address/IPv4 address mask length:16-bit user-defined number. For example, 192.168.122.15/24:1.

· 32-bit AS number in dotted format:16-bit user-defined number. For example, 65535.65535:1.

When you specify none of the community-number, aa:nn, internet, no-advertise, no-export, and no-export-subconfed parameters, this command displays BGP IPv6 unicast routes that have community attributes. In this situation, the whole-match keyword does not take effect.

When you specify neither of the rt and soo parameters, this command displays BGP IPv6 unicast routes that have extended community attributes. In this situation, the whole-match keyword does not take effect.

Examples

# Display brief information about all BGP IPv6 unicast routes.

<Sysname> display bgp routing-table ipv6

Total number of routes: 1

BGP local router ID is 192.168.1.136

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* >e Network : 3:: PrefixLen : 64

NextHop : 1::2 LocPrf :

PrefVal : 0 OutLabel : NULL

MED :

Path/Ogn: 4294967295 4294967294 4294967293 4294967292 4294967291 4294967290 4294967215 4294967225 4294967235 4294967245 4294967295 4294967294 4294967293 4294967292 4294967291 4294967290... i

# Display information about BGP IPv6 unicast routes that match AS path list 1.

<Sysname> display bgp routing-table ipv6 as-path-acl 1

Total number of routes: 2

BGP local router ID is 192.168.1.136

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* >e Network : 2:: PrefixLen : 64

NextHop : 1::2 LocPrf :

PrefVal : 0 OutLabel : NULL

MED :

Path/Ogn: 100i

* >e Network : 3:: PrefixLen : 64

NextHop : 1::2 LocPrf :

PrefVal : 0 OutLabel : NULL

MED :

Path/Ogn: 100i

# Display information about BGP IPv6 unicast routes that match BGP community list 100.

<Sysname> display bgp routing-table ipv6 community-list 100

Total number of routes: 2

BGP local router ID is 192.168.1.136

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* >e Network : 2:: PrefixLen : 64

NextHop : 1::2 LocPrf :

PrefVal : 0 OutLabel : NULL

MED :

Path/Ogn: 100i

* >e Network : 3:: PrefixLen : 64

NextHop : 1::2 LocPrf :

PrefVal : 0 OutLabel : NULL

MED :

Path/Ogn: 100i

# Display information about all BGP IPv6 unicast routes advertised to peer 1::1.

<Sysname> display bgp routing-table ipv6 peer 1::1 advertised-routes

Total number of routes: 1

BGP local router ID is 192.168.1.136

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* > Network : 2:: PrefixLen : 64

NextHop : :: LocPrf :

MED : 0 OutLabel : NULL

Path/Ogn: i

# Display information about all BGP IPv6 unicast routes received from peer 1::1.

<Sysname> display bgp routing-table ipv6 peer 1::1 received-routes

Total number of routes: 1

BGP local router ID is 192.168.1.135

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* >e Network : 2:: PrefixLen : 64

NextHop : ::FFFF:10.1.1.1 LocPrf :

PrefVal : 0 OutLabel : NULL

MED : 0

Path/Ogn: 100i

# Display information about the BGP IPv6 unicast routes that have community attributes.

<Sysname> display bgp routing-table ipv6 community

Total number of routes: 1

BGP local router ID is 192.168.1.136

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* >e Network : 3:: PrefixLen : 64

NextHop : 1::2 LocPrf :

PrefVal : 0 OutLabel : NULL

MED :

Community: <1:1>

# Display information about the BGP IPv6 unicast routes that have extended community attributes.

<Sysname> display bgp routing-table ipv6 ext-community

Total number of routes: 1

BGP local router ID is 192.168.1.136

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a – additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* >e Network : 3:: PrefixLen : 64

NextHop : 1::2 LocPrf :

PrefVal : 0 OutLabel : NULL

MED :

Ext-Community: <RT 1:1>

Table 42 Command output

Field	Description
Status codes	Status codes: · * – valid—Valid route. · > – best—Optimal route. · d – dampened—Dampened route. · h – history—History route. · s – suppressed—Suppressed route. · S – stale—Stale route. · i – internal—Internal route. · e – external—External route. · a – additional-path—Add-Path optimal route.
Origin	Origin of the route: · i – IGP—Originated in the AS. The origin of routes advertised with the network command is IGP. · e – EGP—Learned through EGP. · ?– incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Network	Destination network address.
PrefixLen	Prefix length of the destination network address.
NextHop	Next hop IPv6 address.
LocPrf	Local preference value.
PrefVal	Preferred value of the route.
OutLabel	Outgoing label of the route.
MED	MULTI_EXIT_DISC attribute.
Path/Ogn	AS_PATH and ORIGIN attributes of the route: · AS_PATH attribute—Records the ASs the route has passed, which avoids routing loops. This field can display only 16 AS numbers. Exceeding AS numbers are omitted. You can view the omitted AS numbers by displaying the detailed route information. · ORIGIN attribute—Identifies the origin of the route.
Community	Community attribute value.
Ext-Community	Extended community attribute value.

‌

# Display detailed information about BGP IPv6 unicast routes destined for network 2::/64.

<Sysname> display bgp routing-table ipv6 2:: 64

BGP local router ID: 192.168.1.135

Local AS number: 200

Paths: 2 available, 1 best

BGP routing table information of 2::/64:

From : 10.1.1.1 (192.168.1.136)

Relay nexthop : ::FFFF:10.1.1.1

Original nexthop: ::FFFF:10.1.1.1

OutLabel : NULL

Ext-Community : <HostRoute>, <IP Mobility: Flag 0, SeqNum 1>

RxPathID : 0x0

TxPathID : 0x0

AS-path : 100

Origin : igp

Attribute value : MED 0, pref-val 0

State : valid, external, best, delay, bgp-rib-only

Originator : 176.1.1.2

Cluster list : 80

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

Tunnel policy : NULL

Rely tunnel IDs : N/A

From : 1::1 (192.168.1.136)

Relay nexthop : 1::1

Original nexthop: 1::1

OutLabel : NULL

RxPathID : 0x0

TxPathID : 0x0

AS-path : 100

Origin : igp

Attribute value : MED 0, pref-val 0

State : valid, external

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

Tunnel policy : NULL

Rely tunnel IDs : N/A

# Display community attribute information for the BGP IPv6 unicast routes with destination network 2::/64.

<Sysname> display bgp routing-table ipv6 2:: 64 community

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 2::/64:

Community: no-export

# Display extended community attribute information for the BGP IPv6 unicast routes with destination network 2::/64.

<Sysname> display bgp routing-table ipv6 2:: 64 ext-community

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 2::/64:

Ext-Community: <RT: 1:1>

# Display AS_PATH attribute information for the BGP IPv6 unicast routes with destination network 2::/64.

<Sysname> display bgp routing-table ipv6 2:: 64 as-path

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 2::/64:

As-path: 100

# Display CLUSTER_LIST attribute information for the BGP IPv6 unicast routes with destination network 2::/64.

<Sysname> display bgp routing-table ipv6 2:: 64 cluster-list

BGP local router ID: 1.1.1.9

Local AS number: 100

Paths: 1 available, 1 best

BGP routing table information of 2::/64:

Cluster list: 80

Table 43 Command output

Field	Description
Paths	Number of routes: · available—Number of valid routes. · best—Number of optimal routes.
Original nexthop	Original next hop of the route. If the route was obtained from a BGP update message, the original next hop is the next hop IP address in the message.
OutLabel	Outgoing label of the route.
Ext-Community	Extended community attribute: · HostRoute—Host route. · IP Mobility—IP migration attribute. Flag indicates whether the IP address can be migrated. 1 indicates that the IP address cannot be migrated and 0 indicates that the IP address can be migrated. SeqNum represents the host migration serial number. The larger the serial number, the later the migration.
RxPathID	Add-Path ID of received routes.
TxPathID	Add-Path ID of advertised routes.
AS-path	AS_PATH attribute of the route, which records the ASs the route has passed and avoids routing loops.
Community	Community attribute value.
Ext-Community	Extended community attribute value.
Origin	Origin of the route: · igp—Originated in the AS. The origin of routes advertised with the network command is IGP. · egp—Learned through EGP. · incomplete—Unknown origin. The origin of routes redistributed from IGP protocols is INCOMPLETE.
Attribute value	BGP path attributes: · MED—MED value. · localpref—Local preference value. · pref-val—Preferred value. · pre—Route preference.
State	Current state of the route: · valid. · internal. · external. · local. · best. · localredist—If the state of a route is localredist, the route can be one of the following routes: ¡ Route that is redistributed from another local VPN instance or the public instance to the current VPN instance. ¡ Route that is redistributed from a VPN instance to the public instance. · remoteredist—Route that is received from a peer and is redistributed to a local VPN instance. · delay—The route will be delayed for optimal route selection. This field is displayed only in the detailed command output. · bgp-rib-only—The route will not be flushed to the routing table. This field is displayed only in the detailed command output.
Originator	Router ID of the peer that advertised the route to the reflector.
Cluster list	CLUSTER_LIST attribute of the route.
From	IP address of the BGP peer that advertised the route.
Relay Nexthop	Next hop found by route recursion. If no next hop is found, this field displays not resolved.
IP precedence	IP precedence in the range of 0 to 7. N/A indicates that the route does not support this field.
QoS local ID	QoS local ID in the range of 1 to 4095. N/A indicates that the route does not support this field.
Traffic index	Traffic index in the range of 1 to 64. N/A indicates that the route does not support this field.
Tag	Route tag.
Tunnel policy	Tunnel policy that takes effect. NULL indicates that no tunnel policy takes effect.
Rely Tunnel IDs	Tunnel index IDs after route recursion. This field displays multiple tunnel index IDs if ECMP tunnels exist and displays N/A if no tunnels are found by route recursion.

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# Display advertisement information for BGP IPv6 unicast routes destined for network 2::/64.

<Sysname> display bgp routing-table ipv6 2:: 64 advertise-info

BGP local router ID: 192.168.1.136

Local AS number: 100

Paths: 1 best

BGP routing table information of 2::/64(TxPathID:0):

Advertised to peers (2 in total):

10.1.1.2

1::2

Table 44 Command output

Field	Description
Paths	Number of optimal routes destined for the specified network.
BGP routing table information of 2::/64(TxPathID:0)	Advertisement information for BGP routes destined for network 2::/64.
Advertised to peers (2 in total)	Peers to which the route has been advertised, and the number of peers.

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# Display statistics for BGP IPv6 unicast routes advertised to peer 1::1.

<Sysname> display bgp routing-table ipv6 peer 1::1 advertised-routes statistics

Advertised routes total: 1

# Display statistics for BGP IPv6 unicast routes received from peer 1::1.

<Sysname> display bgp routing-table ipv6 peer 1::1 received-routes statistics

Received routes total: 1

Table 45 Command output

Field	Description
Advertised routes total	Total number of advertised routes.
Received routes total	Total number of received routes.

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# Display BGP IPv6 unicast route statistics.

<Sysname> display bgp routing-table ipv6 statistics

Total number of routes: 4

# Display statistics about the BGP IPv6 unicast routes that have community attributes.

<Sysname> display bgp routing-table ipv6 statistics community

Total number of routes: 1

Table 46 Command output

Field	Description
Total number of routes	Total number of routes.

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Related commands

ip as-path

ip community-list

display bgp routing-table ipv6 unicast inlabel

Use display bgp routing-table ipv6 unicast inlabel to display incoming labels for BGP IPv6 unicast routes. This command is supported only when the device operates in standard mode. For more information about system operating mode, see device management configuration in Fundamentals Configuration Guide.

Syntax

display bgp [ instance instance-name ] routing-table ipv6 [ unicast ] inlabel

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays incoming labels of BGP IPv6 unicast routes in the default BGP instance.

Usage guidelines

This command displays incoming labels for BGP IPv6 unicast routes regardless of whether the unicast keyword is specified.

Examples

# Display incoming labels for all BGP IPv6 unicast routes.

<Sysname> display bgp routing-table ipv6 inlabel

Total number of routes: 2

BGP local router ID is 2.2.2.2

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a - additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* > Network : 1::1 PrefixLen : 128

NextHop : 10::1 OutLabel : NULL

InLabel : 1279

* > Network : 10:: PrefixLen : 64

NextHop : :: OutLabel : NULL

InLabel : 1278

Table 47 Command output

Field	Description
Status codes	Status codes. For more information, see Table 42.
Origin	Origin of the route. For more information, see Table 42.
Network	Destination network address.
PrefixLen	Prefix length of the destination network address.
NextHop	Next hop IPv6 address.
OutLabel	Outgoing label of the IPv6 unicast route, which is assigned by the peer 6PE device.
InLabel	Incoming label of the IPv6 unicast route, which is assigned by the local 6PE device.

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display bgp routing-table ipv6 unicast outlabel

Use display bgp routing-table ipv6 unicast outlabel to display outgoing labels for BGP IPv6 unicast routes.

Syntax

display bgp [ instance instance-name ] routing-table ipv6 [ unicast ] outlabel

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command display outgoing labels of BGP IPv6 unicast routes in the default BGP instance.

Usage guidelines

This command displays outgoing labels for BGP IPv6 unicast routes regardless of whether the unicast keyword is specified.

Examples

# Display outgoing labels for all BGP IPv6 unicast routes.

<Sysname> display bgp routing-table ipv6 outlabel

Total number of routes: 2

BGP local router ID is 2.2.2.2

Status codes: * - valid, > - best, d - dampened, h - history

s - suppressed, S - stale, i - internal, e - external

a - additional-path

Origin: i - IGP, e - EGP, ? - incomplete

* >i Network : 4::4 PrefixLen : 128

NextHop : ::FFFF:3.3.3.3 OutLabel : 1279

* >i Network : 20:: PrefixLen : 64

NextHop : ::FFFF:3.3.3.3 OutLabel : 1278

Table 48 Command output

Field	Description
Status codes	Status codes. For more information, see Table 42.
Origin	Origin of the route. For more information, see Table 42.
Network	Destination network address.
PrefixLen	Prefix length of the destination network address.
NextHop	Next hop IPv6 address.
OutLabel	Outgoing label of the IPv6 unicast route, which is assigned by the peer 6PE device.

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display bgp rpki server

Use display bgp rpki server to display information about connections to RPKI servers.

Syntax

display bgp [ instance instance-name ] rpki server [ [ vpn-instance vpn-instance-name ] ipv4-address ]

display bgp [ instance instance-name ] rpki server [ [ vpn-instance vpn-instance-name ] ipv6-address ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays information for the public network.

ipv4-address: Specifies an RPKI server by its IPv4 address.

ipv6-address: Specifies an RPKI server by its IPv6 address.

Examples

# Display brief information about connections to RPKI servers.

<Sysname> display bgp rpki server

Server VPN-index Port State Time ROAs(IPv4/IPv6)

1.1.1.2 0 1234 Establish 00:05:51 1/0

2.2.2.2 0 1234 Establish 00:06:07 3/1

Table 49 Command output

Field	Description
Server	IP address of the RPKI server.
VPN-index	VPN index.
Port	Port number of the RPKI server.
State	Connection state: · Establish—BGP has established a connection to the RPKI server. · Connect—BGP is establishing a connection to the RPKI server. · Shutdown—BGP has not established a connection to the RPKI server.
Time	Duration of the current connection state.
ROAs(IPv4/IPv6)	Number of IPv4/IPv6 ROAs.

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# Display detailed information about the connection to RPKI server 2.2.2.1.

<Sysname> display bgp rpki server 2.2.2.1

RPKI Cache-Server 2.2.2.1

Port: TCP port 1234

Local addr: 2.2.2.2, Local port: 14342

Connect state: Establish

Total byte Rx: 72

Total byte Tx: 8

Session ID: 1

Serial number: 1

Last PDU type 7, Time: 00:00:15

Last disconnect reason: Response timer expired

Table 50 Command output

Field	Description
RPKI Cache-Server	IP address of the RPKI server.
Port	Port number of the RPKI server.
Local addr	Local IP address of the connection.
Local port	Local port number of the connection.
Connect state	Connection state: · Establish—BGP has established a connection to the RPKI server. · Connect—BGP is establishing a connection to the RPKI server. · Shutdown—BGP has not established a connection to the RPKI server.
Total byte Rx	Number of received bytes.
Total byte Tx	Number of sent bytes.
Session ID	Session ID assigned by the RPKI server.
Serial number	Serial number assigned by the RPKI server.
Last PDU Type	Type of the most recently received PDU.
Time	Duration of the current connection state.
Last disconnect reason	Reason for the most recent connection interruption: · Confingure reset—The port number used to establish the connection was changed or the reset bgp rpki server command was executed. · Receive error report PDU—Received error report packets from the server. · Response timer expired—No response was received within the response time from the RPKI server. · Receive error PDU—Received error packets. · TCP connect failed—The TCP connection was down. · Shutdown port—No port number was specified. · Not enough memory—The memory was insufficient. · Receive cache reset PDU—Received reset packets from the RPKI server.

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display bgp rpki table

Use display bgp rpki table to display the ROA information obtained from RPKI servers.

Syntax

display bgp [ instance instance-name ] rpki table ipv4 [ ipv4-address min min-length max max-length ]

display bgp [ instance instance-name ] rpki table ipv6 [ ipv6-address min min-length max max-length ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

ipv4: Displays information about ROAs with IPv4 prefixes.

ipv4-address: Specifies an IPv4 prefix.

ipv6: Displays information about ROAs with IPv6 prefixes.

ipv6-address: Specifies an IPv6 prefix.

min-length: Specifies the minimum prefix length. The value range for this argument is 0 to 32 for IPv4 prefixes and 0 to 128 for IPv6 prefixes.

max-length: Specifies the maximum prefix length. The value range for this argument is 0 to 32 for IPv4 prefixes and 0 to 128 for IPv6 prefixes.

Examples

# Display brief information about ROAs with IPv4 prefixes.

<Sysname> display bgp rpki table ipv4

Total number of entries: 4

Status codes: S - stale, U - used

Network Mask-range Origin-AS Server Status

1.2.3.4 8-32 100 1.1.1.2 U

5.2.3.4 8-32 100 2.2.2.2 U

6.6.6.6 8-32 100 2.2.2.2 U

7.7.7.7 8-32 20 2.2.2.2 U

Table 51 Command output

Field	Description
Total number of entries	Total number of ROAs.
Network	Network address.
Mask-range	Mask or prefix length range.
Server	IP address of the RPKI server.
Status	ROA state: · U—The ROA is available. · S—The ROA is in aging state.

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# Display detailed information about ROAs with IPv4 prefixes.

<Sysname> display bgp rpki table ipv4 5.2.3.4 min 8 max 32

RPKI ROA entry for 5.2.3.4/8-32

Origin-AS: 100 from 2.2.2.1, used

Table 52 Command output

Field

Description

Origin-AS

ROA information:

· AS number.

· IP address of the RPKI server.

· ROA state:

¡ used—The ROA is available.

¡ stale—The ROA is in aging state.

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display bgp troubleshooting

Use display bgp troubleshooting to display information about BGP peer relationship down events.

Syntax

display bgp [ instance instance-name ] troubleshooting [ event-count ] [ reverse ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

event-count: Specifies the number of peer relationship down events to display, in the range of 1 to 1000. If you do not specify this argument, the command displays information about the earliest or most recent 20 events based on the configuration of the reverse keyword.

reverse: Displays peer relationship down events in chronological order. If you do not specify this keyword, the command displays peer relationship down events in reverse chronological order.

Usage guidelines

Configure this command to display information about BGP peer relationship down events, including the time, reason, and recommended action.

Examples

# Display reasons why BGP peer relationships went down.

<Sysname> display bgp troubleshooting

Total number: 1

Date Time Event description

-----------------------------------------------------------------------

2019-10-06 09:39:18 The BGP peer 10.1.1.1 went down because the

peer ignore command was configured manually.

Please check local BGP configuration.

-----------------------------------------------------------------------

Table 53 Command output

Field	Description
Total number	Total number of peer relationships that went down.
Date	Date (in YYYY-MM-DD format) on which a specific BGP peer relationship went down.
Time	Time (in HH:MM:SS format) when a specific BGP peer relationship went down.
Event description	Description for a specific peer down event. The description format is The BGP peer ip-address went down because peer-down-reason. Please treatment-suggestion. ip-address represents the IP address of the peer, peer-down-reason represents the down reason, and treatment-suggestion represents the recommended action to take.

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Related commands

maintenance-probe enable (Layer 3—IP Routing Command Reference)

display bgp update-group

Use display bgp update-group to display information about BGP update groups.

Syntax

display bgp [ instance instance-name ] update-group ipv4 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ ipv4-address ]

display bgp [ instance instance-name ] update-group ipv6 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ ipv6-address ]

display bgp [ instance instance-name ] update-group ipv6 [ unicast ] [ vpn-instance vpn-instance-name ] [ ipv4-address ]

display bgp [ instance instance-name ] update-group ipv4 [ unicast ] [ vpn-instance vpn-instance-name ] [ ipv6-address ]

display bgp [ instance instance-name ] update-group link-state [ ipv4-address | ipv6-address ]

display bgp [ instance instance-name ] update-group vpnv4 [ vpn-instance vpn-instance-name ] [ ipv4-address ]

display bgp [ instance instance-name ] update-group l2vpn evpn [ ipv4-address | ipv6-address ]

display bgp [ instance instance-name ] update-group vpnv6 [ ipv4-address ]

display bgp [ instance instance-name ] update-group dedicated [ ipv4-address | ipv6-address ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays BGP update group information for the default BGP instance.

ipv4: Displays BGP update group information for IPv4 address family.

ipv6: Displays BGP update group information for IPv6 address family.

link-state: Displays BGP update group information for LS address family.

vpnv4: Displays BGP update group information for VPNv4 address family.

evpn: Displays BGP update group information for EVPN address family.

vpnv6: Displays BGP update group information for VPNv6 address family.

multicast: Displays BGP update group information for multicast address family.

dedicated: Displays BGP update group information for BGP dedicated address family.

unicast: Displays BGP update group information for unicast address family.

vpn-instance vpn-instance-name: Displays BGP update group information for the MPLS L3VPN instance specified by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command displays update group information for the public network.

ipv4-address: Displays BGP update group information for the specified BGP peer.

ipv6-address: Displays BGP update group information for the specified IPv6 BGP peer.

Usage guidelines

The update group feature classifies BGP peers that have the same export policy into an update group. When BGP advertises routes to the peers in the update group, it uses the export policy to filter the routes and generates route updates for all the peers only once.

With this feature, BGP performs one-time policy filtering and encapsulation for a prefix before advertising the prefix to all the peers in the update group. For example, BGP advertises 1000 prefixes to 1000 peers that have the same export policy (in data centers for example). Without the update group feature, BGP matches the export policy 1000 × 1000 times. With the update group feature, BGP matches the export policy only 1000 × 1 times, improving encapsulation efficiency 1000 times.

If you do not specify any parameters, this command displays all update groups for the specified address family on the public network.

By default, the unicast keyword is used if the unicast and multicast keywords are not specified.

Examples

# Display information about all BGP update groups for the IPv4 unicast address family.

<Sysname> display bgp update-group ipv4

Update-group ID: 0

Type: EBGP link

4-byte AS number: Supported

Site-of-Origin: Not specified

Minimum time between advertisements: 30 seconds

Route update delay: 60 seconds

OutQ: 0

Members: 1

99.1.1.1

# Display update group information for BGP VPNv4 peer 1.1.1.2 in VPN instance vpn1.

<Sysname> display bgp update-group vpnv4 vpn-instance vpn1 1.1.1.2

Update-group ID: 0

Type: EBGP link

4-byte AS number: Supported

Site-of-Origin: Not specified

Nesting VPN: vpn1

Minimum time between advertisements: 30 seconds

OutQ: 0

Members: 2

1.1.1.2

1.1.1.3

Table 54 Command output

Field	Description
Update-group ID	ID of the update group.
Type	BGP link type: · IBGP link. · EBGP link. · Confed IBGP link—Confederation IBGP link. · Confed EBGP link—Confederation EBGP link.
Label capability: Supported	The peers in the update group support labeled routes.
4-byte AS number: Supported	4-byte AS number suppression is disabled for the peers in the update group. The peers in the update group support 4-byte AS numbers.
4-byte AS number: Suppressed	4-byte AS number suppression is enabled for the peers in the update group.
Fake AS	A fake local AS number is configured for the peers in the update group.
Public-AS-Only: Yes	BGP route updates advertised to the peers in the update group do not carry the private AS number. · Yes—If a peer uses a private AS number, the AS number is used as an update group classification criterion. If a peer uses a public AS number, the AS number is not used as an update group classification criterion. · No—The AS number is not used as an update group classification criterion.
Substitute-AS: Yes	AS number substitution is enabled.
Minimum time between advertisements: number seconds	Minimum time between advertisements.
Route update delay: number seconds	Advertisement delay for route updates, in seconds.
Advertising community: Yes	Community advertisement to peers in the update group is enabled.
Route-reflect client: Yes	The peer is a client of the route reflector.
Advertising extended community: Yes	Extended community advertisement to peers in the update group is enabled.
Export AS-path-ACL	AS path ACL used to filter BGP routes advertised to peers in the update group.
Export prefix list	Prefix list used to filter BGP routes advertised to peers in the update group.
Export route policy	Routing policy used to filter BGP routes advertised to peers in the update group.
Export filter-policy	ACL used to filter BGP routes advertised to peers in the update group.
OutQ	Number of prefixes to be advertised to peers in the update group.
Members	Number and IP addresses of peers in the update group.
Nesting VPN	Peers in the update group support nesting VPN.
UPE: Yes	Peers in the update group are UPE devices.
UPE export route policy	An outgoing routing policy is applied to peers in the update group.

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domain-distinguisher

Use domain-distinguisher to specify an AS number and a router ID for BGP LS messages.

Use undo domain-distinguisher to restore the default.

Syntax

domain-distinguisher as-number:router-id

undo domain-distinguisher

Default

The AS number and router ID of the current BGP process are used.

Views

BGP LS address family view

Predefined user roles

network-admin

mdc-admin

Parameters

as-number:router-id: Specifies the AS number and router ID. The value range for the as-number argument is 1 to 4294967295, and the router ID is in IP address format.

Examples

# Set the AS number and router ID for BGP LS messages to 65009 and 1.1.1.1, respectively.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family link-state

[Sysname-bgp-default-ls] domain-distinguisher 65009:1.1.1.1

ebgp-interface-sensitive

Use ebgp-interface-sensitive to enable immediate re-establishment of direct EBGP sessions.

Use undo ebgp-interface-sensitive to disable immediate re-establishment of direct EBGP sessions.

Syntax

ebgp-interface-sensitive

undo ebgp-interface-sensitive

Default

Immediate re-establishment of direct EBGP sessions is enabled.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

When a direct link to an EBGP peer fails, BGP tears down the session and re-establishes a session to the peer immediately. If the feature is not enabled, the router does not tear down the session until the hold time expires. However, disabling this feature can prevent routing flaps from affecting EBGP session state.

This command applies only to direct EBGP sessions.

Examples

# Enable immediate re-establishment of direct EBGP sessions.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] ebgp-interface-sensitive

fast-reroute route-policy

Use fast-reroute route-policy to apply a routing policy to fast reroute (FRR) for a BGP address family.

Use undo fast-reroute route-policy to restore the default.

Syntax

fast-reroute route-policy route-policy-name

undo fast-reroute route-policy

Default

No routing policy is applied to FRR.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters.

Usage guidelines

You can use the following methods to configure BGP FRR:

· Method 1—Execute the pic command in BGP address family view. BGP calculates a backup next hop for a BGP route in the address family if there are two or more unequal-cost routes to reach the destination.

· Method 2—Execute the fast-reroute route-policy command to use a routing policy in which a backup next hop is specified by using the command apply [ ipv6 ] fast-reroute backup-nexthop. For BGP to generate a backup next hop for the primary route, the backup next hop calculated by BGP must be the same as the specified backup next hop. You can also configure if-match clauses in the routing policy to identify the routes protected by FRR.

If both methods are configured, Method 2 takes precedence over Method 1.

Examples

# Apply routing policy frr-policy to FRR in BGP IPv4 unicast address family view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4

[Sysname-bgp-default-ipv4] fast-reroute route-policy frr-policy

Related commands

apply fast-reroute

apply ipv6 fast-reroute

pic

route-policy

filter-policy export

Use filter-policy export to filter advertised BGP routes.

Use undo filter-policy export to remove the route filter.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP VPNv4 address family view/BGP IPv4 multicast address family view:

filter-policy { ipv4-acl-number | name ipv4-acl-name | prefix-list ipv4-prefix-list-name } export [ direct | { isis | ospf | rip } process-id | static ]

undo filter-policy export [ direct | { isis | ospf | rip } process-id | static ]

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view/BGP VPNv6 address family view/BGP IPv6 multicast address family view:

filter-policy { ipv6-acl-number | name ipv6-acl-name | prefix-list ipv6-prefix-list-name } export [ direct | { isisv6 | ospfv3 | ripng } process-id | static ]

undo filter-policy export [ direct | { isisv6 | ospfv3 | ripng } process-id | static ]

In BGP EVPN address family view:

filter-policy { mac-acl-number | name mac-acl-name } export

undo filter-policy export

Default

Advertised BGP routes are not filtered.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-acl-number: Specifies an IPv4 ACL by its number in the range of 2000 to 3999, to match routes by destination.

ipv6-acl-number: Specifies an IPv6 ACL by its number in the range of 2000 to 3999, to match routes by destination.

mac-acl-number: Specifies a Layer 2 ACL by its number in the range of 4000 to 4999, to match routes by destination.

name ipv4-acl-name: Specifies an IPv4 ACL by its name, a case-insensitive string of 1 to 63 characters starting with a letter. The ACL name cannot be all.

name ipv6-acl-name: Specifies an IPv6 ACL by its name, a case-insensitive string of 1 to 63 characters starting with a letter. The ACL name cannot be all.

name mac-acl-name: Specifies a Layer 2 ACL to match the destination MAC addresses of routes. The mac-acl-name argument represents the name of the Layer 2 ACL, a case-insensitive string of 1 to 63 characters starting with a letter. The ACL name cannot be all.

prefix-list ipv4-prefix-list-name: Specifies an IPv4 prefix list by its name, a case-sensitive string of 1 to 63 characters, to match routes by destination.

prefix-list ipv6-prefix-list-name: Specifies an IPv6 prefix list by its name, a case-sensitive string of 1 to 63 characters, to match routes by destination.

direct: Filters direct routes.

isis: Filters IS-IS routes.

isisv6: Filters IPv6 IS-IS routes.

ospf: Filters OSPF routes.

ospfv3: Filters OSPFv3 routes.

rip: Filters RIP routes.

ripng: Filters RIPng routes.

static: Filters static routes.

process-id: Specifies a routing protocol by its ID in the range of 1 to 65535.

Usage guidelines

If you specify a protocol (such as direct and isis), this command filters only routes redistributed from the specified protocol. If you do not specify a protocol, this command filters all advertised routes, including the following routes:

· Redistributed from IGP.

· Injected by the network command.

· Learned from BGP peers.

If you use a basic ACL (with a number from 2000 to 2999) configured with the rule [ rule-id ] { deny | permit } source source-address source-wildcard command, the command matches routes whose destination network addresses match the source-address source-wildcard argument. However, it does not match the masks of the destination addresses.

To use an advanced ACL (with a number from 3000 to 3999) in the command, configure the ACL using one of the following steps:

· To deny or permit a route with the specified destination, use the rule [ rule-id ] { deny | permit } ip source sour-addr sour-wildcard command.

· To deny or permit a route with the specified destination and mask, use the rule [ rule-id ] { deny | permit } ip source sour-addr sour-wildcard destination dest-addr dest-wildcard command.

The source keyword specifies the destination address of a route and the destination keyword specifies the subnet mask of the destination address. For the mask configuration to take effect, specify a contiguous subnet mask.

When you use a Layer 2 ACL (with a number from 4000 to 4999) to match BGP EVPN routes, follow these restrictions and guidelines:

· To deny or permit routes with the specified destination MAC address, use the rule [ rule-id ] { deny | permit } dest-mac dest-address dest-mask command.

· The match criteria specified by using the rule [ rule-id ] { deny | permit } source-mac source-address source-mask and rule [ rule-id ] { deny | permit } source-mac source-address source-mask dest-mac dest-address dest-mask commands do not take effect.

When you specify an ACL, follow these guidelines:

· If the specified ACL does not exist or does not have any rules, all BGP routes can pass the ACL.

· If a rule in the specified ACL is applied to a VPN instance, the rule will deny all BGP routes.

Examples

# In BGP IPv4 unicast address family view, use IPv4 basic ACL 2000 to filter advertised BGP IPv4 routes.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] filter-policy 2000 export

Related commands

filter-policy import

peer as-path-acl

peer filter-policy

peer prefix-list

peer route-policy

filter-policy import

Use filter-policy import to filter received BGP routes.

Use undo filter-policy import to restore the default.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP VPNv4 address family view/BGP IPv4 multicast address family view:

filter-policy { ipv4-acl-number | name ipv4-acl-name | prefix-list ipv4-prefix-list-name } import

undo filter-policy import

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view/BGP VPNv6 address family view/BGP IPv6 multicast address family view:

filter-policy { ipv6-acl-number | name ipv6-acl-name | prefix-list ipv6-prefix-list-name } import

undo filter-policy import

In BGP EVPN address family view:

filter-policy { mac-acl-number | name mac-acl-name } import

undo filter-policy import

Default

Received BGP routes are not filtered.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-acl-number: Specifies an IPv4 ACL by its number in the range of 2000 to 3999, to match routes by destination.

ipv6-acl-number: Specifies an IPv6 ACL by its number in the range of 2000 to 3999, to match routes by destination.

mac-acl-number: Specifies a Layer 2 ACL by its number in the range of 4000 to 4999, to match routes by destination.

name ipv4-acl-name: Specifies an IPv4 ACL by its name, a case-insensitive string of 1 to 63 characters starting with a letter. The ACL name cannot be all.

name ipv6-acl-name: Specifies an IPv6 ACL by its name, a case-insensitive string of 1 to 63 characters starting with a letter. The ACL name cannot be all.

prefix-list ipv4-prefix-list-name: Specifies an IPv4 prefix list by its name, a case-sensitive string of 1 to 63 characters, to match routes by destination.

prefix-list ipv6-prefix-list-name: Specifies an IPv6 prefix list by its name, a case-sensitive string of 1 to 63 characters, to match routes by destination.

Usage guidelines

To use an advanced ACL (with a number from 3000 to 3999) in the command, configure the ACL using one of the following steps:

· To deny or permit a route with the specified destination, use the rule [ rule-id ] { deny | permit } ip source sour-addr sour-wildcard command.

· To deny or permit a route with the specified destination and mask, use the rule [ rule-id ] { deny | permit } ip source sour-addr sour-wildcard destination dest-addr dest-wildcard command.

When you use a Layer 2 ACL (with a number from 4000 to 4999) to match BGP EVPN routes, follow these restrictions and guidelines:

· To deny or permit routes with the specified destination MAC address, use the rule [ rule-id ] { deny | permit } dest-mac dest-address dest-mask command.

When you specify an ACL, follow these guidelines:

· If the specified ACL does not exist or does not have any rules, all BGP routes can pass the ACL.

· If a rule in the specified ACL is applied to a VPN instance, the rule will deny all BGP routes.

Examples

# In BGP IPv4 unicast address family view, use IPv4 basic ACL 2000 to filter received BGP routes.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] filter-policy 2000 import

Related commands

filter-policy export

peer as-path-acl

peer filter-policy

peer prefix-list

peer route-policy

flush suboptimal-route

Use flush suboptimal-route to enable BGP to flush the suboptimal BGP route to the RIB.

Use undo flush suboptimal-route to disable BGP from flushing the suboptimal BGP route to the RIB.

Syntax

flush suboptimal-route

undo flush suboptimal-route

Default

BGP is disabled from flushing the suboptimal BGP route to the RIB. Only the optimal route is flushed to the RIB.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command flushes the suboptimal BGP route to the RIB when the following conditions are met:

· The optimal route is generated by the network command or is redistributed by the import-route command.

· The suboptimal route is received from a BGP peer.

After the suboptimal route is flushed to the RIB on a network, BGP immediately switches traffic to the suboptimal route when the optimal route fails.

For example, the device has a static route to the subnet 1.1.1.0/24 that has a higher priority than a BGP route. BGP redistributes the static route and receives a route to 1.1.1.0/24 from a peer. After the flush suboptimal-route command is executed, BGP flushes the received BGP route to the RIB as the suboptimal route. When the static route fails, BGP immediately switches traffic to the suboptimal route if inter-protocol FRR is enabled. For more information about inter-protocol FRR, see Layer 3—IP Routing Configuration Guide.

Examples

# Enable BGP to flush the suboptimal BGP route to the RIB.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] flush suboptimal-route

forwarding-conversational-learning

Use forwarding-conversational-learning to enable conversational remote host route learning.

Use undo forwarding-conversational-learning to disable conversational remote host route learning.

Syntax

forwarding-conversational-learning [ route-policy route-policy-name ]

undo forwarding-conversational-learning

Default

Conversational remote host route learning is disabled in BGP IPv4 and IPv6 address family views.

In BGP EVPN address family view, conversational remote host route learning is enabled.

Views

BGP IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

route-policy route-policy-name: Issues only the remote host routes matching the specified routing policy to the FIB. The route-policy-name argument specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters. If you do not specify a routing policy or the specified routing policy does not exist, BGP issues all remote host routes to the FIB. The apply clauses in the specified routing policy do not take effect.

Usage guidelines

By default, BGP generates FIB entries for all host routes received from peers (remote host routes) and issues the routes to the FIB. To conserve device resources, execute this command in BGP IPv4/IPv6 unicast address family view to enable conversational remote host route learning. The command enables BGP to issue a remote host route to the FIB only if it is required for forwarding a packet.

When you execute this command in BGP IPv4/IPv6 unicast address family view, follow these restrictions and guidelines:

· This command takes effect only on remote host routes generated based on ARP or ND entries and does not take effect on local host routes and other BGP routes. Host routes generated based on ARP or ND entries carry a special mark advertised through the extended community attribute. Executing this command also enables BGP to advertise the extended community attribute to all peers and peer groups.

· This command takes effect only when you execute the ip forwarding-conversational-learning command.

In an EVPN VXLAN distributed gateway network, a distributed gateway issues ARP entries received from other gateways as host routes to the FIB. To conserve device resources, execute this command in BGP EVPN address family view to enable conversational remote host route learning. The command enables the device to issue a remote ARP entry to the hardware only when the entry is required for packet forwarding.

When you execute this command in BGP EVPN address family view, follow these restrictions and guidelines:

· This command takes effect only on remote EVPN MAC/IP advertisement routes carrying ARP information.

· This command takes effect only when you execute the arp forwarding-conversational-learning command.

Examples

# In BGP IPv4 unicast address family view, enable conversational remote host route learning and specify routing policy policy1 to match remote host routes.

<Sysname>system-view

[Sysname] bgp 200

[Sysname-bgp-default] address-family ipv4 unicast

[[Sysname-bgp-default-ipv4] forwarding-conversational-learning route-policy policy1

Related commands

arp forwarding-conversational-learning (EVPN Command Reference)

ip forwarding-conversational-learning (EVPN Command Reference)

peer advertise-ext-community

graceful-restart

Use graceful-restart to enable BGP Graceful Restart (GR) capability.

Use undo graceful-restart to disable BGP GR capability.

Syntax

graceful-restart

undo graceful-restart

Default

BGP GR capability is disabled.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

GR ensures continuous forwarding when BGP restarts or an active/standby switchover occurs.

BGP peers exchange Open messages containing GR information. If both parties have GR capability, they establish a GR-capable session.

After you execute this command, the device re-establishes BGP sessions.

Examples

# Enable GR capability for BGP process 100.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] graceful-restart

Related commands

graceful-restart timer purge-time

graceful-restart timer restart

graceful-restart timer wait-for-rib

graceful-restart peer-reset

Use graceful-restart peer-reset to enable BGP to reset peer sessions gracefully.

Use undo graceful-restart peer-reset to disable BGP from resetting peer sessions gracefully.

Syntax

graceful-restart peer-reset [ all ]

undo graceful-restart peer-reset

Default

BGP does not reset peer sessions gracefully.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

all: Enables BGP to reset peer sessions gracefully when the TCP connection goes down, the hold timer expires, or the support for a new address family is added. If you do not specify this keyword, BGP resets peer sessions gracefully only when the support for a new address family is added.

Usage guidelines

When the TCP connection goes down, the hold timer expires, or the support for a new address family is added, BGP tears down and then re-establishes the peer sessions, which will cause traffic interruption. To avoid traffic interruption in these cases, execute this command to enable BGP to reset peer sessions gracefully.

Examples

# Enable BGP to reset peer sessions gracefully.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] graceful-restart

[Sysname-bgp-default] graceful-restart peer-reset

Related commands

graceful-restart

graceful-restart timer purge-time

Use graceful-restart timer purge-time to set the Routing Information Base (RIB) purge timer.

Use undo graceful-restart timer purge-time to restore the default.

Syntax

graceful-restart timer purge-time timer

undo graceful-restart timer purge-time

Default

The RIB purge timer is 480 seconds.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

timer: Sets the RIB purge timer in the range of 1 to 6000 seconds.

Usage guidelines

BGP starts the RIB purge timer when an active/standby switchover occurs or BGP restarts. If BGP route exchange is not completed within the RIB purge timer, the GR restarter quits the GR process. It updates the RIB with the BGP routes already learned, and removes the stale routes from RIB.

Enable BGP GR before you execute this command.

Set the RIB purge timer to be long enough to complete GR, especially when large numbers of BGP routes exist.

As a best practice, set the RIB purge timer in the following way:

· Set the timer to be greater than the timer set by the graceful-restart timer wait-for-rib command

· Set the timer to be less than the timer set by the protocol lifetime command.

Examples

# Set the RIB purge timer to 300 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] graceful-restart

[Sysname-bgp-default] graceful-restart timer purge-time 300

Related commands

graceful-restart

graceful-restart timer restart

graceful-restart timer wait-for-rib

protocol lifetime (Layer 3—IP Routing Command Reference)

graceful-restart timer restart

Use graceful-restart timer restart to configure the GR timer.

Use undo graceful-restart timer restart to restore the default.

Syntax

graceful-restart timer restart timer

undo graceful-restart timer restart

Default

The GR timer is 150 seconds.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

timer: Specifies the GR timer in the range of 3 to 600 seconds.

Usage guidelines

The GR restarter sends the GR timer to the GR helper in an Open message. When the GR helper detects that an active/standby switchover or a BGP restart occurred on the GR restarter, the GR helper performs the following operations:

1. Marks all routes learned from the GR restarter as stale.

2. Starts the GR timer.

3. If no BGP session is established before the GR timer expires, the GR helper removes the stale routes.

Before you configure this command, enable the BGP GR capability.

To apply a new GR timer, you must re-establish BGP sessions.

Examples

# Set the GR timer to 300 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] graceful-restart

[Sysname-bgp-default] graceful-restart timer restart 300

Related commands

graceful-restart

graceful-restart timer purge-time

graceful-restart timer wait-for-rib

Use graceful-restart timer wait-for-rib to configure the time to wait for the End-of-RIB marker.

Use undo graceful-restart timer wait-for-rib to restore the default.

Syntax

graceful-restart timer wait-for-rib timer

undo graceful-restart timer wait-for-rib

Default

The time to wait for the End-of-RIB marker is 600 seconds.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

timer: Specifies the time to wait for the End-of-RIB marker, in the range of 3 to 3600 seconds.

Usage guidelines

BGP uses this timer to control the time to receive updates from the peer. The timer is not advertised to the peer.

After the GR restarter and GR helper re-establish a BGP session, they start this timer. If they do not complete route exchange within the time period, the GR restarter does not receive new routes. It updates its routing table and forwarding table with learned BGP routes, and the GR helper removes the stale routes. Set a large value for the maximum time to wait for the End-of-RIB marker when a large number of routes exist.

This command controls the routing convergence speed. A smaller timer value means faster routing convergence but possibly results in incomplete routing information.

Before configuring this command, you must enable the BGP GR capability.

Examples

# Set the time to wait for the End-of-RIB marker on the local end to 100 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] graceful-restart

[Sysname-bgp-default] graceful-restart timer wait-for-rib 100

Related commands

graceful-restart

graceful-restart timer purge-time

graceful-restart timer restart

group

Use group to create a peer group.

Use undo group to delete a peer group.

Syntax

group group-name [ external | internal ]

undo group group-name

Default

No peer groups exist.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a name for the peer group, a case-sensitive string of 1 to 47 characters.

external: Creates an EBGP peer group.

internal: Creates an IBGP peer group.

Usage guidelines

In a large-scale network, many peers can use the same route selection policy. You can configure a peer group and add these peers into this group. In this way, peers can share the same policy as the peer group. When the policy of the group is modified, the modification also applies to peers in it.

If you do not specify the internal or external keyword, this command creates an IBGP peer group.

If you perform configurations on a peer group and peers of the peer group, the most recent configuration takes effect.

After you create a peer group, you must use the peer enable command to enable BGP to exchange routing information with the specified peer group.

Examples

# In BGP instance view, create EBGP peer group test with AS number 200, and add EBGP peers 10.1.1.1 and 10.1.2.1 into the group.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] group test external

[Sysname-bgp-default] peer test as-number 200

[Sysname-bgp-default] peer 10.1.1.1 group test

[Sysname-bgp-default] peer 10.1.2.1 group test

Related commands

display bgp group

peer enable

ignore all-peers

Use ignore all-peers to disable BGP session establishment with all peers and peer groups.

Use undo ignore all-peers to restore the default.

Syntax

ignore all-peers [ graceful graceful-time { community { community-number | aa:nn } | local-preference preference | med med } * ]

undo ignore all-peers

Default

BGP can establish sessions to all peers and peer groups.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

graceful graceful-time: Sets the time to wait before the device shuts down all BGP sessions to peers and peer groups. The value range for the graceful-time argument is 0 to 65535 seconds. If you set the value for this option to 0, the device does not shut down the sessions to peers and peer groups. If you do not specify this option, the device immediately shuts down the sessions to peers and peer groups.

community { community-number | aa:nn }: Specifies the community attribute for routes advertised to all peers and peer groups. The community-number argument represents the community sequence number in the range of 1 to 4294967295. The aa:nn argument represents the community number. Both aa and nn are in the range of 0 to 65535. If you do not specify this option, the command does not change the community attribute for routes advertised to all peers and peer groups.

local-preference preference: Specifies the local preference for routes advertised to all peers and peer groups, in the range of 0 to 4294967295. A larger value represents a higher preference. If you do not specify this option, the command does not change the local preference for routes advertised to all peers and peer groups.

med med: Specifies the MED value for routes advertised to all peers and peer groups, in the range of 0 to 4294967295. The smaller the MED value, the higher the route priority. If you do not specify this option, the command does not change the MED value for routes advertised to all peers and peer groups.

Usage guidelines

CAUTION:

Executing this command tears down all existing sessions to peers and peer groups and clears all related routing information.

‌

This command enables you to temporarily tear down the BGP sessions to all peers and peer groups. You can perform network upgrade and maintenance without needing to delete and reconfigure the peers and peer groups. To recover the sessions, execute the undo ignore all-peers command.

If you specify the graceful keyword in the ignore all-peers command, BGP performs the following tasks:

1. Starts the wait timer specified with the graceful keyword.

2. Advertises all routes to all peers and peer groups and changes the attribute for the advertised routes to the specified value.

3. Shuts down all sessions to peers and peer groups after the wait timer expires.

This configuration lowers the priority of the routes advertised by BGP and BGP peers can select other peers' routes as optimal routes, which avoids traffic interruption upon wait timer expiration or peer disconnection. To enable BGP to advertise low-priority routes without tearing down BGP sessions, you can set the value for the graceful graceful-time option to 0.

For a BGP peer or peer group, the configuration made by the peer ignore command takes precedence over the configuration made by the ignore all-peers command.

Examples

# In BGP instance view, configure BGP to gracefully shut down the sessions to all peers and peer groups in 60 seconds, advertise all routes to all peers and peer groups, and change the community attribute and local preference for the advertised routes to 1:1 and 200, respectively.

<Sysname> system-view

[Sysname] bgp 1

[Sysname-bgp-default] ignore all-peers graceful 60 community 1:1 local-preference 200

Related commands

peer ignore

ignore-first-as

Use ignore-first-as to configure BGP to ignore the first AS number of EBGP route updates.

Use undo ignore-first-as to restore the default.

Syntax

ignore-first-as

undo ignore-first-as

Default

BGP checks the first AS number of a received EBGP route update. If the first AS number is neither that of the BGP peer nor a private AS number, the BGP router disconnects the BGP session to the peer.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Examples

# Configure BGP to ignore the first AS number of EBGP route updates.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] ignore-first-as

Related commands

peer ignore-first-as

import-route

Use import-route to enable BGP to redistribute routes from an IGP protocol.

Use undo import-route to disable route redistribution from an IGP protocol.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv4 multicast address family view:

import-route { isis | ospf | rip } [ { process-id | all-processes } [ allow-direct | med med-value | route-policy route-policy-name ] * ]

import-route { direct | static } [ med med-value | route-policy route-policy-name ] *

undo import-route { direct | { isis | ospf | rip } [ process-id | all-processes ] | static }

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv4 multicast address family view:

import-route local-aggregate [ route-policy route-policy-name ]

undo import-route local-aggregate

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view/BGP IPv6 multicast address family view:

import-route { isisv6 | ospfv3 | ripng } [ { process-id | all-processes } [ allow-direct | med med-value | route-policy route-policy-name ] * ]

import-route { direct | static } [ med med-value | route-policy route-policy-name ] *

undo import-route { direct | { isisv6 | ospfv3 | ripng } [ process-id | all-processes ] | static }

Default

BGP does not redistribute IGP routes.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

direct: Redistributes direct routes.

isis: Redistributes IS-IS routes.

isisv6: Redistributes IPv6 IS-IS routes.

ospf: Redistributes OSPF routes.

ospfv3: Redistributes OSPFv3 routes.

rip: Redistributes RIP routes.

ripng: Redistributes RIPng routes.

static: Redistributes static routes.

local-aggregate: Redistributes the local network specified for the public network.

process-id: Specifies a process by its ID in the range of 1 to 65535. The default is 1. For IPv4 routes, it is available only when the protocol is isis, ospf, or rip. For IPv6 routes, it is available only when the protocol is isisv6, ospfv3, or ripng.

all-processes: Redistributes routes from all the processes of the specified IGP protocol.

allow-direct: Redistributes the networks of the local interfaces enabled with the specified routing protocol. By default, the networks of the local interfaces are not redistributed. If you specify both the allow-direct keyword and the route-policy route-policy-name option, make sure the if-match rule defined in the routing policy does not conflict with the allow-direct keyword. For example, if you specify the allow-direct keyword, do not configure the if-match route-type rule for the routing policy. Otherwise, the allow-direct keyword does not take effect.

med med-value: Specifies a MED value for redistributed routes, in the range of 0 to 4294967295. If you do not specify an MED, the metric of a redistributed route is used as its MED.

route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters, to filter redistributed routes or set route attributes for redistributed routes.

Usage guidelines

The import-route command cannot redistribute default IGP routes. To redistribute default IGP routes, use the default-route imported command together with the import-route command.

Only active routes can be redistributed. You can use the display ip routing-table protocol or display ipv6 routing-table protocol command to view route state information.

The ORIGIN attribute is IGP for routes redistributed by the import-route local-aggregate command. The ORIGIN attribute is INCOMPLETE for routes redistributed by the import-route command.

If you have specified the all-processes keyword to redistribute all routes of a routing protocol, this command no longer takes effect on any processes of the routing protocol.

Examples

# In BGP IPv4 unicast address family view, redistribute routes from RIP process 1, and set the MED value for redistributed routes to 100.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] import-route rip 1 med 100

Related commands

display ip routing-table protocol

display ipv6 routing-table protocol

network (MPLS Command Reference)

import-route multipath

Use import-route multipath to redistribute all routes with the same destination address to BGP.

Use undo import-route multipath to restore the default.

Syntax

import-route multipath

undo import-route multipath

Default

When multiple routes with the same destination address exist, BGP redistributes only the optimal routes to its routing table.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command takes effect only on the routes redistributed by the import-route command in the same address family.

By default, the import-route command redistributes only the optimal routes to BGP when multiple routes with the same destination address exist. To redistribute all routes with the same destination address to BGP, execute this command and BGP can advertise these routes to its peers.

Examples

# In BGP IPv4 unicast address family view, enable BGP to redistribute all routes with the same destination address.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] import-route multipath

Related commands

import-route

interface-peer/peer additional-paths

Use peer additional-paths to configure the BGP Additional Paths capabilities.

Use undo peer additional-paths to remove the configuration.

Syntax

In BGP VPNv4 address family view/BGP-VPN VPNv4 address family view/BGP VPNv6 address family view:

peer { group-name | ipv4-address [ mask-length ] } additional-paths { receive | send } *

undo peer { group-name | ipv4-address [ mask-length ] } additional-paths { receive | send } *

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP EVPN address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } additional-paths { receive | send } *

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } additional-paths { receive | send } *

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } additional-paths { receive | send } *

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } additional-paths { receive | send } *

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number additional-paths { receive | send } *

undo interface-peer interface-type interface-number additional-paths { receive | send } *

Default

No BGP Additional Paths capabilities are configured.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP-VPN VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command configures the BGP Additional Paths capabilities for all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command configures the BGP Additional Paths capabilities for all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

receive: Enables the BGP additional path receiving capability.

send: Enables the BGP additional path sending capability.

Usage guidelines

You can enable the BGP additional path sending, receiving, or both sending and receiving capabilities on a BGP router. For two BGP peers to successfully negotiate the Additional Paths capabilities, make sure one end has the sending capability and the other end has the receiving capability.

Examples

# In BGP IPv4 unicast address family view, enable the BGP additional path receiving capability.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer 1.1.1.1 additional-paths receive

interface-peer/peer advertise additional-paths best

Use peer advertise additional-paths best to set the maximum number of Add-Path optimal routes that can be advertised to a peer or peer group.

Use undo peer advertise additional-paths best to remove the configuration.

Syntax

In BGP VPNv4 address family view/BGP-VPN VPNv4 address family view/BGP VPNv6 address family view:

peer { group-name | ipv4-address [ mask-length ] } advertise additional-paths best number

undo peer { group-name | ipv4-address [ mask-length ] } advertise additional-paths best

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP EVPN address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise additional-paths best number

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise additional-paths best

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } advertise additional-paths best number

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } advertise additional-paths best

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number advertise additional-paths best number

undo interface-peer interface-type interface-number advertise additional-paths best

Default

A maximum of one Add-Path optimal route can be advertised to a peer or peer group.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP-VPN VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command sets the maximum number of Add-Path optimal routes that can be advertised to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command sets the maximum number of Add-Path optimal routes that can be advertised to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

number: Specifies the maximum number of Add-Path optimal routes that can be advertised to a peer or peer group, in the range of 2 to 32.

Usage guidelines

If the number of Add-Path optimal routes advertised to a peer or peer group exceeds the number of optimal routes, the number of optimal routes takes effect.

Examples

# In BGP IPv4 unicast address family view, set the maximum number to 3 for Add-Path optimal routes that can be advertised to peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer 1.1.1.1 advertise additional-paths best 3

Related commands

additional-paths select-best

peer additional-paths

interface-peer/peer advertise origin-as-validation

Use peer advertise origin-as-validation to configure BGP to advertise the BGP RPKI validation state to a peer or peer group.

Use undo peer advertise origin-as-validation to restore the default.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise origin-as-validation

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise origin-as-validation

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } advertise origin-as-validation

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } advertise origin-as-validation

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number advertise origin-as-validation

undo interface-peer interface-type interface-number advertise origin-as-validation

In BGP VPNv4 address family view/BGP VPNv6 address family view:

peer { group-name | ipv4-address [ mask-length ] } advertise origin-as-validation

undo peer { group-name | ipv4-address [ mask-length ] } advertise origin-as-validation

Default

BGP does not advertise the BGP RPKI validation state to any peer or peer groups.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv4 address family view

BGP VPNv6 address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

BGP advertises the BGP RPKI validation state to a peer or peer group through the extended community attribute. To configure this command, you must first enable BGP to advertise the extended community attribute to the peer or peer group.

In the current software version, BGP can advertise the BGP RPKI validation state only to IBGP peers and peer groups.

Examples

# In BGP IPv4 unicast address family view, configure BGP to advertise the BGP RPKI validation state to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test advertise-ext-community

[Sysname-bgp-default-ipv4] peer test advertise origin-as-validation

interface-peer/peer advertise-community

Use peer advertise-community to enable BGP to advertise the COMMUNITY attribute to a peer or peer group.

Use undo peer advertise-community to disable BGP from advertising the COMMUNITY attribute to a peer or peer group.

Syntax

In BGP VPNv4 address family view/BGP VPNv6 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } advertise-community

undo peer { group-name | ipv4-address [ mask-length ] } advertise-community

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP EVPN address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise-community

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise-community

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } advertise-community

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } advertise-community

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } advertise-community

undo peer { group-name | ipv6-address [ prefix-length ] } advertise-community

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number advertise-community

undo interface-peer interface-type interface-number advertise-community

Default

BGP does not advertise the COMMUNITY attribute to any peers or peer groups.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command advertises the COMMUNITY attribute to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command advertises the COMMUNITY attribute to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

The COMMUNITY attribute is a group of specific data carried in update messages. A route can carry one or more COMMUNITY attribute values (each is represented by a 4-byte integer). The receiving router processes the route (for example, determining whether to advertise the route and the scope for advertising the route) based on the COMMUNITY attribute values.

After you execute the peer advertise-community command, routing updates advertised to the peer carry the COMMUNITY attribute.

After you execute the undo peer advertise-community command, BGP, upon receiving a route with the COMMUNITY attribute, removes the COMMUNITY attribute before sending the route to the peer or peer group.

Examples

# In BGP IPv4 unicast address family view, enable BGP to advertise the COMMUNITY attribute to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test advertise-community

Related commands

apply community

if-match community

ip community-list

interface-peer/peer advertise-ext-community

Use peer advertise-ext-community to enable BGP to advertise the extended community attribute to a peer or peer group.

Use undo peer advertise-ext-community to disable BGP from advertising the extended community attribute to a peer or peer group.

Syntax

In BGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } advertise-ext-community

undo peer { group-name | ipv4-address [ mask-length ] } advertise-ext-community

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise-ext-community

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise-ext-community

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number} advertise-ext-community

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } advertise-ext-community

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } advertise-ext-community

undo peer { group-name | ipv6-address [ prefix-length ] } advertise-ext-community

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number advertise-ext-community

undo interface-peer interface-type interface-number advertise-ext-community

Default

BGP does not advertise the extended community attribute to any peers or peer groups.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command advertises the extended community attribute to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command advertises the extended community attribute to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

To meet increasing user demands, BGP defines a new attribute—extended community attribute. The extended community attribute has the following advantages over the COMMUNITY attribute:

· The extended community attribute has an 8-byte length.

· The extended community attribute supports various types. You can select an extended community attribute type as needed to implement route filtering and control. This simplifies configuration and management.

After you execute the peer advertise-ext-community command, route updates sent to the peer or peer group carry the extended community attribute.

After you execute the undo peer advertise-ext-community command, BGP, upon receiving a route with the extended community attribute, removes the extended community attribute before sending the route to the peer or peer group.

Examples

# In BGP IPv4 unicast address family view, enable BGP to advertise the extended community attribute to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test advertise-ext-community

Related commands

apply extcommunity

if-match extcommunity

ip extcommunity-list

interface-peer/peer advertise-policy exist-policy

Use peer advertise-policy exist-policy to specify an existent policy to control route advertisement.

Use undo peer advertise-policy exist-policy to remove the configuration.

Syntax

In BGP IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise-policy advertise-policy-name exist-policy exist-policy-name

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise-policy exist-policy

In BGP IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } advertise-policy advertise-policy-name exist-policy exist-policy-name

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } advertise-policy exist-policy

In BGP IPv4 unicast address family view/BGP IPv6 unicast address family view:

interface-peer interface-type interface-number advertise-policy advertise-policy-name exist-policy exist-policy-name

undo interface-peer interface-type interface-number advertise-policy exist-policy

Default

No existent policy is specified to control route advertisement.

Views

BGP IPv4 unicast address family view

BGP IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

advertise-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters. The routing policy is used as the route advertisement policy.

exist-policy exist-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters. The routing policy is used as the existent policy.

Usage guidelines

After you configure this command, routes that match the route advertisement policy can be advertised only when the BGP routing table contains prefixes that match the existent policy.

The existent policy does not apply to routes that do not match the route advertisement policy.

Examples

# In BGP IPv4 unicast address family view, configure BGP to advertise routes matching routing policy adv-policy to peer 1.1.1.1 only when the BGP routing table contains prefixes matching routing policy ex-policy.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer 1.1.1.1 advertise-policy adv-policy exist-policy ex-policy

Related commands

filter-policy export

filter-policy import

peer as-path-acl

peer filter-policy

peer prefix-list

peer route-policy

peer advertise-policy non-exist-policy

route-policy

interface-peer/peer advertise-policy non-exist-policy

Use peer advertise-policy non-exist-policy to specify a nonexistent policy to control route advertisement.

Use undo peer advertise-policy non-exist-policy to remove the configuration.

Syntax

In BGP IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise-policy advertise-policy-name non-exist-policy non-exist-policy-name

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } advertise-policy non-exist-policy

In BGP IPv6 unicast address family view:

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } advertise-policy non-exist-policy

In BGP IPv4 unicast address family view/BGP IPv6 unicast address family view:

interface-peer interface-type interface-number advertise-policy advertise-policy-name non-exist-policy exist-policy-name

undo interface-peer interface-type interface-number advertise-policy non-exist-policy

Default

No nonexistent policy is specified to control route advertisement.

Views

BGP IPv4 unicast address family view

BGP IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

advertise-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters. The routing policy is used as the route advertisement policy.

non-exist-policy non-exist-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters. The routing policy is used as the nonexistent policy.

Usage guidelines

After you configure this command, routes that match the route advertisement policy can be advertised only when the BGP routing table does not contain any prefixes that match the nonexistent policy.

The nonexistent policy does not apply to routes that do not match the route advertisement policy.

Examples

# In BGP IPv4 unicast address family view, configure BGP to advertise routes matching routing policy adv-policy to peer 1.1.1.1 only when the BGP routing table does not contain any prefixes matching routing policy n-ex-policy.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer 1.1.1.1 advertise-policy adv-policy non-exist-policy n-ex-policy

Related commands

filter-policy export

filter-policy import

peer as-path-acl

peer filter-policy

peer prefix-list

peer route-policy

peer advertise-policy exist-policy

route-policy

interface-peer/peer allow-as-loop

Use peer allow-as-loop to allow a local AS number to exist in the AS_PATH attribute of routes from a peer or peer group, and to set the number of times the local AS number can appear.

Use undo peer allow-as-loop to remove the configuration.

Syntax

In BGP VPNv4 address family view/BGP VPNv6 address family view/BGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } allow-as-loop [ number ]

undo peer { group-name | ipv4-address [ mask-length ] } allow-as-loop

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP EVPN address family view/BGP dedicated address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } allow-as-loop [ number ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } allow-as-loop

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } allow-as-loop [ number ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } allow-as-loop

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } allow-as-loop [ number ]

undo peer { group-name | ipv6-address [ prefix-length ] } allow-as-loop

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number allow-as-loop [ number ]

undo interface-peer interface-type interface-number allow-as-loop

Default

The local AS number is not allowed to exist in the AS_PATH attribute of routes from a peer or peer group.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP dedicated address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet in this command, BGP allows a local AS number to exist in the AS_PATH attribute of routes from all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet in this command, BGP allows a local AS number to exist in the AS_PATH attribute of routes from all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

number: Specifies the number of times for which the local AS number can appear, in the range of 1 to 10. The default number is 1. If the number of times for which the local AS number appears in a route is more than the specified number, BGP considers that a routing loop occurs and discards the route.

Usage guidelines

By default, BGP does not receive routes that contain the local AS number in the AS_PATH attribute to avoid routing loops. However, in some network environments, the AS_PATH attribute of a route from a peer must be allowed to contain the local AS number (for example, a Hub&Spoke network in MPLS L3VPN). Otherwise, the route cannot be advertised correctly.

Examples

# In BGP IPv4 unicast address family view, set the number of times the local AS number can appear in AS_PATH attribute of routes from peer group test to 2.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test allow-as-loop 2

interface-peer/peer as-number (for a BGP peer)

Use peer as-number to create a BGP peer and specify its AS number.

Use undo peer to delete a BGP peer.

Syntax

peer { ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } as-number as-number

undo peer { ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number }

interface-peer interface-type interface-number as-number as-number

undo interface-peer interface-type interface-number

Default

No BGP peers exist.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-address: Specifies the IPv4 address of a peer.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command enables BGP to establish dynamic peer relationships with all devices in the subnet.

ipv6-address: Specifies the IPv6 address of a peer.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command enables BGP to establish dynamic peer relationships with all devices in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies a local interface and establish peer relationships with link-local addresses that the interface learned in ND entries.

as-number: Specifies an AS number for the peer, in the range of 1 to 4294967295. If the AS numbers of the peer and the local router are the same, the peer is an IBGP peer. If they are different, the peer is an EBGP peer.

Usage guidelines

You can also create a peer and add it to a peer group by using the peer group command.

To modify the AS number of a peer, do not execute the peer as-number command repeatedly. Instead, you must first delete the peer and configure it again.

After you create a peer, you must use the peer enable command to enable BGP to exchange routing information with the specified peer.

For a remote device to establish a peer relationship with the local device, you must specify the IP address of the local device on the remote device.

Examples

# In BGP instance view, create BGP peer 1.1.1.1 and set its AS number to 100.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 as-number 100

Related commands

display bgp peer

peer enable

peer group

interface-peer/peer as-path-acl

Use peer as-path-acl to specify an AS path list to filter routes incoming from or outgoing to a peer or peer group.

Use undo peer as-path-acl to delete the AS path list specified to filter routes incoming from or outgoing to a peer or peer group.

Syntax

In BGP VPNv4 address family view/BGP VPNv6 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } as-path-acl { as-path-acl-number | as-path-acl-name } { export | import }

undo peer { group-name | ipv4-address [ mask-length ] } as-path-acl [ as-path-acl-number| as-path-acl-name ] { export | import }

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } as-path-acl { as-path-acl-number | as-path-acl-name } { export | import }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } as-path-acl [ as-path-acl-number | as-path-acl-name ] { export | import }

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } as-path-acl { as-path-acl-number | as-path-acl-name } { export | import }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } as-path-acl [ as-path-acl-number | as-path-acl-name ] { export | import }

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } as-path-acl { as-path-acl-number | as-path-acl-name } { export | import }

undo peer { group-name | ipv6-address [ prefix-length ] } as-path-acl [ as-path-acl-number | as-path-acl-name ] { export | import }

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number as-path-acl { as-path-acl-number | as-path-acl-name } { export | import }

undo interface-peer interface-type interface-number as-path-acl [ as-path-acl-number | as-path-acl-name ] { export | import }

Default

No AS path list is specified for filtering.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command specifies an AS path list to filter routes incoming from or outgoing to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command specifies an AS path list to filter routes incoming from or outgoing to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

as-path-acl-number: Specifies an AS path list by its number in the range of 1 to 256.

as-path-acl-name: Specifies an AS path list by its name, a case-sensitive string of 1 to 51 characters. The AS path list name cannot contain only digits.

export: Filters outgoing routes.

import: Filters incoming routes.

Usage guidelines

The specified AS path list must have been created with the ip as-path command in system view. If you specify a nonexistent AS path list, all routes can pass the AS path list.

If you configure this command for an EBGP peer on the local device, the local device performs the following tasks before route advertisement to that EBGP peer:

1. Use the specified AS path list to filter BGP routes and determine the routes to be advertised.

2. Add the local AS number into the AS_PATH attribute of the routes to be advertised.

Examples

# In BGP IPv4 unicast address family view, specify AS path list 1 to filter routes outgoing to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test as-path-acl 1 export

Related commands

filter-policy export

filter-policy import

ip as-path

peer filter-policy

peer prefix-list

peer route-policy

interface-peer/peer bfd

Use peer bfd to enable BFD for the link to a BGP peer or peer group.

Use undo peer bfd to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } bfd [ multi-hop | single-hop ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } bfd

peer link-local-address interface interface-type interface-number bfd [ multi-hop | single-hop ]

undo peer link-local-address interface interface-type interface-number bfd

interface-peer interface-type interface-number bfd [ multi-hop | single-hop ]

undo interface-peer interface-type interface-number bfd

Default

BFD is disabled for the link to a BGP peer or peer group.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command enables BFD for links to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command enables BFD for links to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

multi-hop: Specifies the control packet mode for multi-hop BFD.

single-hop: Specifies the control packet mode for single-hop BFD.

Usage guidelines

When you do not specify the multi-hop, or single-hop keyword:

· If an IBGP peer or peer group is specified, this command enables multi-hop BFD in control packet mode for the IBGP peer or peer group.

· If a directly connected EBGP peer or peer group is specified and the peer ebgp-max-hop command is not configured, this command enables single-hop BFD in control packet mode for the EBGP peer or peer group. If the EBGP peer or peer group is not directly connected or the peer ebgp-max-hop command is configured, this command enables multi-hop BFD in control packet mode for the EBGP peer or peer group.

To detect the link to a BGP peer established through link-local addresses, you must configure single-hop BFD in control packet mode.

To establish a control packet mode BFD session to a BGP peer, you must configure the same BFD detection mode (multi-hop or single-hop) on the local device and the BGP peer.

For more information about BFD, see BFD configuration in High Availability Configuration Guide.

BFD helps speed up BGP routing convergence upon link failures. However, if you have enabled GR, use BFD with caution. BFD might detect a failure before the system performs GR, resulting in GR failure. If you have enabled both BFD and GR for BGP, do not disable BFD during a GR process to avoid GR failure.

Examples

# In BGP instance view, enable control packet mode single-hop BFD for the link to BGP peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test bfd single-hop

Related commands

display bgp peer

display bfd session (High Availability Command Reference)

interface-peer/peer bmp server

Use peer bmp server to specify a peer or peer group to be monitored by the specified BMP servers.

Use undo peer bmp server to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } bmp server server-number-list

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number ] } bmp server

interface-peer interface-type interface-number bmp server server-number-list

undo interface-peer interface-type interface-number bmp server

Default

No peer or peer group is specified.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

server-number-list: Specifies a list of up to 8 BMP servers. The value range for the BMP server number is 1 to 8. The BMP servers must have been created.

Usage guidelines

For a BGP peer, the following rules apply when BGP selects a BMP server:

· The BMP server specified by the peer bmp server command takes precedence over that specified by the bmp server monitor current-instance command.

· The BMP server specified by the bmp server monitor current-instance command takes precedence over that specified by the bmp server monitor all-vpn-instance command.

If you execute this command multiple times for an instance, the most recent configuration takes effect.

Examples

# In BGP instance view, configure BMP server 1 to monitor peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 bmp server 1

Related commands

bmp server

bmp server monitor all-vpn-instance

bmp server monitor current-instance

interface-peer/peer capability-advertise orf prefix-list

Use peer capability-advertise orf prefix-list to enable BGP ORF capabilities negotiation for a peer or peer group.

Use undo peer capability-advertise orf prefix-list to disable BGP ORF capabilities negotiation for a peer or peer group.

Syntax

In BGP VPNv4 address family view/BGP VPNv6 address family view/BGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } capability-advertise orf prefix-list { both | receive | send }

undo peer { group-name | ipv4-address [ mask-length ] } capability-advertise orf prefix-list { both | receive | send }

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } capability-advertise orf prefix-list { both | receive | send }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } capability-advertise orf prefix-list { both | receive | send }

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } capability-advertise orf prefix-list { both | receive | send }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } capability-advertise orf prefix-list { both | receive | send }

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } capability-advertise orf prefix-list { both | receive | send }

undo peer { group-name | ipv6-address [ prefix-length ] } capability-advertise orf prefix-list { both | receive | send }

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number capability-advertise orf prefix-list { both | receive | send }

undo interface-peer interface-type interface-number capability-advertise orf prefix-list { both | receive | send }

Default

BGP ORF capabilities are disabled.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

both: Enables BGP to send and receive route fresh messages that carry the ORF information.

receive: Enables BGP to receive route fresh messages that carry the ORF information.

send: Enables BGP to send route fresh messages that carry the ORF information.

Usage guidelines

After you configure this command, the BGP peers negotiate the ORF capabilities through Open messages. After completing the negotiation process, the BGP peers can exchange ORF information through route refresh messages. To enable the peers to exchange nonstandard ORF information, you must also configure the peer capability-advertise orf non-standard command.

Examples

# Enables BGP ORF capabilities negotiation for peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4

[Sysname-bgp-default-ipv4] peer 1.1.1.1 capability-advertise orf prefix-list both

Related commands

peer capability-advertise orf non-standard

interface-peer/peer default-route-advertise

Use peer default-route-advertise to advertise a default route to a peer or peer group.

Use undo peer default-route-advertise to disable default route advertisement to a peer or peer group.

Syntax

In BGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } default-route-advertise [ route-policy route-policy-name ]

undo peer { group-name | ipv4-address [ mask-length ] } default-route-advertise

In BGP VPNv4 address family view:

peer { group-name | ipv4-address [ mask-length ] } default-route-advertise vpn-instance vpn-instance-name

undo peer { group-name | ipv4-address } default-route-advertise vpn-instance vpn-instance-name

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } default-route-advertise [ route-policy route-policy-name ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } default-route-advertise

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } default-route-advertise [ route-policy route-policy-name ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } default-route-advertise

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } default-route-advertise [ route-policy route-policy-name ]

undo peer { group-name | ipv6-address [ prefix-length ] } default-route-advertise

In BGP EVPN address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } default-route-advertise { ipv4 | ipv6 } vpn-instance vpn-instance-name

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } default-route-advertise { ipv4 | ipv6 } vpn-instance vpn-instance-name

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number default-route-advertise [ route-policy route-policy-name ]

undo interface-peer interface-type interface-number default-route-advertise

Default

No default route is advertised to any peers or peer groups.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command advertises a default route to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command advertises a default route to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters. The specified policy can modify the route attribute and filter routes.

ipv4: Specifies an IPv4 default route.

ipv6: Specifies an IPv6 default route.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters.

Usage guidelines

This command enables the router to send a default route with the next hop being itself to the peer or peer group regardless of whether the default route exists in the routing table.

Examples

# In BGP IPv4 unicast address family view, advertise a default route to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test default-route-advertise

interface-peer/peer description

Use peer description to configure a description for a peer or peer group.

Use undo peer description to remove the description for a peer or peer group.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } description text

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } description

interface-peer interface-type interface-number description text

undo interface-peer interface-type interface-number description

Default

No description information is configured for a peer or peer group.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

text: Specifies a description for a peer or peer group, a case-sensitive string of 1 to 79 characters.

Examples

# In BGP instance view, set the description for peer group test to ISP1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test description ISP1

interface-peer/peer dscp

Use peer dscp to set a DSCP value for outgoing BGP packets.

Use undo peer dscp to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } dscp dscp-value

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } dscp

interface-peer interface-type interface-number dscp dscp-value

undo interface-peer interface-type interface-number dscp

Default

The DSCP value for outgoing BGP packets is 48.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command specifies a DSCP value for outgoing BGP packets to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command specifies a DSCP value for outgoing BGP packets to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

dscp-value: Specifies a DSCP value in the range of 0 to 63.

Usage guidelines

The DSCP value of an IP packet specifies the priority level of the packet and affects the transmission priority of the packet. A larger DSCP value represents a higher priority.

Examples

# In BGP instance view, set the DSCP value to 10 for outgoing BGP packets to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test dscp 10

interface-peer/peer enable

Use peer enable to enable BGP to exchange routing information for an address family with a peer or peer group.

Use undo peer enable to disable BGP from exchanging routing information for an address family with a peer or peer group.

Syntax

In BGP VPNv4 address family view/BGP-VPN VPNv4 address family view/BGP VPNv6 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } enable

undo peer { group-name | ipv4-address [ mask-length ] } enable

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP EVPN address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } enable

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } enable

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } enable

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } enable

In BGP LS address family view/BGP dedicated address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } enable

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } enable

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } enable

undo peer { group-name | ipv6-address [ prefix-length ] } enable

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number enable

undo interface-peer interface-type interface-number enable

In BGP iNOF address family view:

peer ipv4-address [ mask-length ] enable

undo peer ipv4-address [ mask-length ] enable

Default

BGP cannot exchange routing information with a peer or peer group.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP-VPN VPNv4 address family view

BGP IPv6 unicast address family view

BGP LS address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP dedicated address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet in this command, BGP exchanges routing information for an address family with all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet in this command, BGP exchanges routing information for an address family with all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

Executing the peer enable command in different views enables BGP to exchange routing information for the corresponding address families with the specified peer.

· In BGP IPv4 unicast address family view, the command enables the capability to exchange IPv4 unicast routing information. It also adds the learned routes to the BGP routing table of the public network.

· In BGP-VPN IPv4 unicast address family view, the command enables the capability to exchange IPv4 unicast routing information. It also adds the learned routes to the BGP routing table of the specified VPN instance.

· In BGP VPNv4 address family view, the command enables the capability to exchange VPNv4 routing information. In an MPLS L3VPN network, execute the command on PE devices in BGP VPNv4 address family view.

· In BGP-VPN VPNv4 address family view, the command enables the capability to exchange VPNv4 routing information. In a nested VPN network, execute this command on ISP PE devices in BGP-VPN VPNv4 address family view to do the following:

¡ Enable the PE devices to exchange BGP VPNv4 routing information with ISP CEs.

¡ Add the VPNv4 routes learned by the PE devices to the routing table of the specified VPN instance.

· In BGP IPv6 unicast address family view, the command enables the capability to exchange IPv6 unicast routing information. It also adds the learned routes to the IPv6 BGP routing table of the public network.

· In BGP-VPN IPv6 unicast address family view, the command enables the capability to exchange IPv6 unicast routing information. It also adds the learned routes to the IPv6 BGP routing table of the specified VPN instance.

· In BGP VPNv6 address family view, the command enables the capability to exchange VPNv6 routing information. In an IPv6 MPLS L3VPN network, execute the command on PE devices in BGP VPNv6 address family view.

· In BGP EVPN address family view, the command enables the capability to exchange EVPN information. In an EVPN network, execute the command on devices in BGP EVPN address family view.

· In BGP IPv4 multicast address family view, the command enables the capability to exchange IPv4 unicast routes used for RPF check. For information about RPF check, see IP Multicast Configuration Guide.

· In BGP IPv6 multicast address family view, the command enables the capability to exchange IPv6 unicast routes used for RPF check. For information about RPF check, see IP Multicast Configuration Guide.

· In BGP IPv4 RT filter address family view, the command enables the capability to exchange IPv4 RT filter routing information. In an MPLS L3VPN network, execute the command on PE devices in BGP IPv4 RT filter address family view.

· In BGP dedicated address family view, the command enables the capability to exchange dedicated routing information. BGP peers use dedicated routes to exchange IPv4SG or IPv6SG bindings. For more information about IPSG and IPSG bindings, see IP source guard configuration in Security Configuration Guide.

The undo peer enable command disables BGP to exchange routing information for the corresponding address family with the peer.

Executing the peer enable command for a peer group might cause session re-establishment to some peers in the peer group. Make sure you fully understand this impact on the network before executing the command.

Examples

# In BGP IPv4 unicast address family view, enable BGP to exchange IPv4 unicast routing information with peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer 1.1.1.1 enable

Related commands

display bgp peer

interface-peer/peer fake-as

Use peer fake-as to advertise a fake AS number to a peer or peer group.

Use undo peer fake-as to remove the fake AS number advertised to a peer or peer group.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } fake-as as-number

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } fake-as

interface-peer interface-type interface-number fake-as as-number

undo interface-peer interface-type interface-number fake-as

Default

No fake local AS number is advertised to a peer or peer group.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command advertises a fake AS number to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command advertises a fake AS number to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

as-number: Specifies a fake AS number in the range of 1 to 4294967295.

Usage guidelines

After you move a BGP router from an AS to another AS (from AS 2 to AS 3 for example), you have to modify the AS number of the router on all its EBGP peers. To avoid such modifications, you can configure the router to advertise a fake AS number 2 to its EBGP peers so that the EBGP peers still think that Router A is in AS 2.

The peer fake-as command is applicable only to EBGP peers or peer groups.

If you execute the peer fake-as command on the local router, specify the local router's AS number on the peer as the fake local AS number specified in the command.

Examples

# In BGP instance view, advertise a fake AS number of 200 to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test fake-as 200

interface-peer/peer filter-policy

Use peer filter-policy to filter routes advertised to or received from a peer or peer group by using an ACL.

Use undo peer filter-policy to remove the ACL specified to filter routes advertised to or received from a peer or peer group.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } filter-policy { ipv4-acl-number | name ipv4-acl-name } { export | import }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } filter-policy [ ipv4-acl-number | name ipv4-acl-name ] { export | import }

In BGP VPNv4 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } filter-policy { ipv4-acl-number | name ipv4-acl-name } { export | import }

undo peer { group-name | ipv4-address [ mask-length ] } filter-policy [ ipv4-acl-number | name ipv4-acl-name ] { export | import }

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } filter-policy { ipv6-acl-number | name ipv6-acl-name } { export | import }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } filter-policy [ ipv6-acl-number | name ipv6-acl-name ] { export | import }

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } filter-policy { ipv6-acl-number | name ipv6-acl-name } { export | import }

undo peer { group-name | ipv6-address [ prefix-length ] } filter-policy [ ipv6-acl-number | name ipv6-acl-name ] { export | import }

In BGP VPNv6 address family view:

peer { group-name | ipv4-address [ mask-length ] } filter-policy { ipv6-acl-number | name ipv6-acl-name } { export | import }

undo peer { group-name | ipv4-address [ mask-length ] } filter-policy [ ipv6-acl-number | name ipv6-acl-name ] { export | import }

In BGP EVPN address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } filter-policy { mac-acl-number | name mac-acl-name } { export | import }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } filter-policy [ mac-acl-number | name mac-acl-name ] { export | import }

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

interface-peer interface-type interface-number filter-policy { ipv4-acl-number | name ipv4-acl-name } { export | import }

undo interface-peer interface-type interface-number filter-policy [ ipv4-acl-number | name ipv4-acl-name ] { export | import }

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number filter-policy { ipv6-acl-number | name ipv6-acl-name } { export | import }

undo interface-peer interface-type interface-number filter-policy [ ipv6-acl-number | name ipv6-acl-name ] { export | import }

Default

No ACL-based filtering is configured.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command filters routes advertised to or received from all dynamic peers in the subnet by using an ACL.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command filters routes advertised to or received from all dynamic peers in the subnet by using an ACL.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

ipv4-acl-number: Specifies an ACL by its number in the range of 2000 to 3999.

name ipv4-acl-name: Specifies an IPv4 ACL by its name, a case-insensitive string of 1 to 63 characters starting with a letter. The ACL name cannot be all.

ipv6-acl-number: Specifies an IPv6 ACL by its number in the range of 2000 to 3999.

name ipv6-acl-name: Specifies an IPv6 ACL by its name, a case-insensitive string of 1 to 63 characters starting with a letter. The ACL name cannot be all.

mac-acl-number: Specifies a Layer 2 ACL by its number in the range of 4000 to 4999, to match routes by destination.

export: Filters routes advertised to the peer/peer group.

import: Filters routes received from the peer/peer group.

Usage guidelines

The specified ACL used by the peer filter-policy command must have been created with the acl command in system view. Otherwise, all routes can pass the ACL.

If you use a basic ACL (with a number from 2000 to 2999) configured with the rule [ rule-id ] { deny | permit } source source-address source-wildcard command, the command matches routes whose destination network addresses match the source-address source-wildcard argument without matching the masks of the destination addresses.

To use an advanced ACL (with a number from 3000 to 3999) in the command, configure the ACL using one of the following steps:

· To deny or permit a route with the specified destination, use the rule [ rule-id ] { deny | permit } ip source sour-addr sour-wildcard command.

· To deny or permit a route with the specified destination and mask, use the rule [ rule-id ] { deny | permit } ip source sour-addr sour-wildcard destination dest-addr dest-wildcard command.

When you use a Layer 2 ACL (with a number from 4000 to 4999) to match BGP EVPN routes, follow these restrictions and guidelines:

· To deny or permit routes with the specified destination MAC address, use the rule [ rule-id ] { deny | permit } dest-mac dest-address dest-mask command.

When you specify an ACL, follow these guidelines:

· If the specified ACL does not exist or does not have any rules, all BGP routes can pass the ACL.

· If a rule in the specified ACL is applied to a VPN instance, the rule will deny all BGP routes.

Examples

# In BGP IPv4 unicast address family view, apply ACL 2000 to filter routes advertised to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test filter-policy 2000 export

Related commands

acl (ACL and QoS Command Reference)

filter-policy export

filter-policy import

peer as-path-acl

peer prefix-list

peer route-policy

interface-peer/peer graceful-restart timer restart extra

Use peer graceful-restart timer restart extra to set the extra time to wait after the restart timer expires.

Use undo peer graceful-restart timer restart extra to restore the default.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } graceful-restart timer restart extra { time | no-limit }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } graceful-restart timer restart extra

interface-peer interface-type interface-number graceful-restart timer restart extra { time | no-limit }

undo interface-peer interface-type interface-number graceful-restart timer restart extra

Default

The extra time to wait after the restart timer expires is 0 seconds.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

time: Specifies the extra time to wait after the restart timer expires, in the range of 0 to 86400 seconds.

no-limit: Sets an unlimited time to wait for BGP session re-establishment.

Usage guidelines

After the active/standby switchover or BGP restart completes, the GR helper marks the routes it learned from the GR restarter as stale routes. If the GR helper fails to establish a BGP session after both the GR timer and the extra timer to wait expire, the GR helper removes the stale routes.

If you specify the no-limit keyword, the GR helper does not start the End-of-RIB marker waiting timer after a BGP session re-establishment and keeps waiting for the End-of-RIB marker from the GR restarter.

Examples

# Set the extra time to wait after the restart timer expires to 100 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 10.1.100.2 graceful-restart timer restart extra 100

Related commands

graceful-restart timer restart

interface-peer/peer group

Use peer group to add a peer to a peer group.

Use undo peer group to delete a peer from a peer group.

Syntax

peer { ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } group group-name [ as-number as-number ]

undo peer { ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } group group-name

interface-peer interface-type interface-number group group-name [ as-number as-number ]

undo interface-peer interface-type interface-number group group-name

Default

No peers exist in a peer group.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-address: Specifies a peer by its IPv4 address.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command adds all dynamic peers in the subnet to a peer group.

ipv6-address: Specifies a peer by its IPv6 address.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command adds all dynamic peers in the subnet to a peer group.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

as-number as-number: Specifies an AS for a peer by its number in the range of 1 to 4294967295.

Usage guidelines

You can add a peer to a peer group in the following ways:

· Use the peer as-number command to create a peer and specify its AS number, and then use the peer group command to add the peer to the peer group.

¡ You can specify the as-number keyword for the peer group command. The AS number must be the same as the AS number specified in the peer as-number command.

¡ If you have specified the AS number of the peer group with the peer as-number command, the peer to be added must have the same AS number as the peer group.

¡ To add a peer to an IBGP peer group, the peer must be an IBGP peer.

· Use the peer group command to create a peer and add it to the peer group.

¡ If you have specified the AS number of the peer group with the peer as-number command, you do not need to specify the as-number keyword when you execute the peer group command. This is because the AS number of the peer is the same as the peer group. To specify the as-number keyword for the peer group command, make sure the AS number is the same as the peer group.

¡ If no AS number is specified for an EBGP peer group, specify the as-number keyword when you execute the peer group command.

¡ If no AS number is specified for an IBGP peer group, you do not need to specify the as-number keyword when you execute the peer group command. This is because the AS number of the IBGP peer group is the local AS number. To specify the as-number keyword for the peer group command, make sure the AS number is the same as the local AS number.

If you have specified the AS number of a peer group with the peer as-number command, only the peers with the same AS number can be added to the peer group. All peers in the group share the same AS number. If you have not specified the AS number for a peer group, peers added to it can use their own AS numbers.

After you add a peer to a peer group, you must use the peer enable command to enable BGP to exchange routing information with the peer group.

Examples

# In BGP instance view, add peer 10.1.1.1 to EBGP peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] group test external

[Sysname-bgp-default] peer 10.1.1.1 group test as-number 2004

Related commands

group

peer as-number

peer enable

interface-peer/peer ignore

Use peer ignore to disable BGP session establishment with a peer or peer group.

Use undo peer ignore to enable BGP session establishment with a peer or peer group.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } ignore [ graceful graceful-time { community { community-number | aa:nn } | local-preference preference | med med } * ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } ignore

interface-peer interface-type interface-number ignore [ graceful graceful-time { community { community-number | aa:nn } | local-preference preference | med med } * ]

undo interface-peer interface-type interface-number ignore

Default

BGP can establish a session to a peer or peer group.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet in this command, BGP tears down sessions to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet in this command, BGP tears down sessions to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

graceful graceful-time: Sets the time to wait before the device shuts down the session to the specified peer or peer group. The value range for the graceful-time argument is 0 to 65535 seconds. If you set the value for this option to 0, the device does not shut down the session to the specified peer or peer group. If you do not specify this option, the command immediately shuts down the session to the specified peer or peer group.

community { community-number | aa:nn }: Specifies the community attribute for advertised routes. The community-number argument represents the community sequence number in the range of 1 to 4294967295. The aa:nn argument represents the community number. Both aa and nn are in the range of 0 to 65535. If you do not specify this option, the command does not change the community attribute for advertised routes.

local-preference preference: Specifies the local preference for advertised routes, in the range of 0 to 4294967295. A larger value represents a higher preference. If you do not specify this option, the command does not change the local preference for advertised routes.

med med: Specifies the MED value for advertised routes, in the range of 0 to 4294967295. The smaller the MED value, the higher the route priority. If you do not specify this option, the command does not change the MED value for advertised routes.

Usage guidelines

CAUTION:

· If a session has been established to a peer, executing the peer ignore command for the peer tears down the session and clears all related routing information.

· If sessions have been established to a peer group, executing the peer ignore command for the peer group tears down the sessions to all peers in the group and clears all related routing information.

‌

This command enables you to temporarily tear down the BGP session to a peer or peer group. You can perform network upgrade and maintenance without needing to delete and reconfigure the peer or peer group. To recover the session, execute the undo peer ignore command.

If you specify the graceful keyword in the peer ignore command, BGP performs the following tasks:

1. Starts the wait timer specified with the graceful keyword.

2. Advertises all routes to the specified peer or peer group and changes the attribute for the advertised routes to the specified value.

Advertises the routes from the specified peer or peer group to other IBGP peers and peer groups and changes the attribute for the advertised routes to the specified value.

3. Shuts down the session to the specified peer or peer group after the wait timer expires.

For a BGP peer or peer group, the configuration made by the peer ignore command takes precedence over the configuration made by the ignore all-peers command.

Examples

# In BGP instance view, disable session establishment with peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 ignore

# In BGP instance view, configure BGP to gracefully shut down the session to peer 1.1.1.1 in 60 seconds, advertise all routes to peer 1.1.1.1, and change the community attribute and local preference for the advertised routes to 1:1 and 200, respectively.

<Sysname> system-view

[Sysname] bgp 1

[Sysname-bgp-default] peer 1.1.1.1 ignore graceful 60 community 1:1 local-preference 200

Related commands

ignore all-peers

interface-peer/peer ignore-first-as

Use peer ignore-first-as to enable BGP to ignore the first AS number of EBGP route updates received from a peer or peer group.

Use undo peer ignore-first-as to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } ignore-first-as

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } ignore-first-as

interface-peer interface-type interface-number ignore-first-as

undo interface-peer interface-type interface-number ignore-first-as

Default

BGP checks the first AS number of a received EBGP route update. If the first AS number is neither that of the BGP peer nor a private AS number, the BGP router disconnects the BGP session to the peer.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet in this command, BGP ignores the first AS number of EBGP route updates received from all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet in this command, BGP ignores the first AS number of EBGP route updates received from all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

This command takes effect only on the EBGP routes received after you execute this command. After you execute the undo peer ignore-first-as command, BGP advertises a ROUTE-REFRESH message to request the routing information from the EBGP peer or peer group.

Examples

# In BGP instance view, enable BGP to ignore the first AS number of EBGP route updates received from peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test ignore-first-as

Related commands

ignore-first-as

interface-peer/peer ignore-originatorid

Use peer ignore-originatorid to configure BGP to ignore the ORIGINATOR_ID attribute in BGP route updates.

Use undo peer ignore-originatorid to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } ignore-originatorid

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } ignore-originatorid

interface-peer interface-type interface-number ignore-originatorid

undo interface-peer interface-type interface-number ignore-originatorid

Default

BGP does not ignore the ORIGINATOR_ID attribute in BGP route updates.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet in this command, BGP ignores the ORIGINATOR_ID attribute in BGP route updates from all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet in this command, BGP ignores the ORIGINATOR_ID attribute in BGP route updates from all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

Before using this command, make sure it does not cause any routing loops to the network.

Before forwarding a route received from a client, the route reflector adds an ORIGINATOR_ID attribute (the router ID of the client) to the route. By default, BGP drops incoming route updates whose ORIGINATOR_ID attribute is the same as the local router ID.

Some networks such as firewall networks require BGP to accept such route updates. To meet the requirement, you must configure BGP to ignore the ORIGINATOR_ID attribute.

After you execute this command, BGP also ignores the CLUSTER_LIST attribute.

Examples

# In BGP instance view, configure BGP to ignore the ORIGINATOR_ID attribute in BGP route updates from peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 ignore-originatorid

interface-peer/peer ipsec-profile

Use peer ipsec-profile to apply an IPsec profile to an IPv6 BGP peer or peer group.

Use undo peer ipsec-profile to remove the profile from an IPv6 BGP peer or peer group.

Syntax

peer { group-name | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } ipsec-profile profile-name

undo peer { group-name | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } ipsec-profile

interface-peer interface-type interface-number ipsec-profile profile-name

undo interface-peer interface-type interface-number ipsec-profile

Default

No IPsec profile is configured for any IPv6 BGP peers or peer groups.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command applies an IPsec profile to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

profile-name: Specifies an IPsec profile by its name, a case-sensitive string of 1 to 63 characters.

Usage guidelines

IPsec can protect IPv6 BGP packets from data eavesdropping, tampering, and attacks caused by forged IPv6 BGP packets.

When two IPv6 BGP neighbor devices, for example Device A and Device B, are configured with IPsec, Device A encapsulates an IPv6 BGP packet with IPsec before sending it to Device B. If Device B successfully receives and decapsulates the packet, it establishes an IPv6 BGP peer relationship with Device A or learns IPv6 BGP routes to Device A. If Device B receives but fails to decapsulate the packet, or receives a packet not protected by IPsec, it discards the packet.

Configure IPsec to protect IPv6 BGP packets through the following steps:

1. Configure an IPsec transform set.

2. Configure a manual IPsec profile.

3. Execute this command to apply the IPsec profile to an IPv6 BGP peer or peer group.

For more information about IPsec transform sets and IPsec profiles, see Security Configuration Guide.

This command supports only IPsec profiles in manual mode.

If you configure IPsec on a device, you must configure IPsec on its IPv6 BGP peer. Otherwise, IPv6 BGP packets cannot be received.

Examples

# In BGP instance view, apply IPsec profile profile001 to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test ipsec-profile profile001

Related commands

display bgp group

display bgp peer

interface-peer/peer keep-all-routes

Use peer keep-all-routes to save all route updates from a peer or peer group, regardless of whether the routes have passed the configured routing policy.

Use undo peer keep-all-routes to remove the configuration.

Syntax

In BGP VPNv4 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } keep-all-routes

undo peer { group-name | ipv4-address [ mask-length ] } keep-all-routes

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } keep-all-routes

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } keep-all-routes

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } keep-all-routes

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } keep-all-routes

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } keep-all-routes

undo peer { group-name | ipv6-address [ prefix-length ] } keep-all-routes

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number keep-all-routes

undo interface-peer interface-type interface-number keep-all-routes

Default

Route updates from a peer or peer group are not saved.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command saves all route updates from all dynamic peers in the subnet, regardless of whether the routes have passed the configured routing policy.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command saves all route updates from all dynamic peers in the subnet, regardless of whether the routes have passed the configured routing policy.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

To implement BGP session soft-reset when the local router and a peer or peer group do not support the route refresh feature, use the peer keep-all-routes command. The command saves all route updates received from the peer or peer group. After modifying the route selection policy, filter all saved routes with the new policy to refresh the routing table. This method avoids tearing down BGP sessions.

Examples

# In BGP IPv4 unicast address family view, save all route updates from peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer 1.1.1.1 keep-all-routes

Related commands

peer capability-advertise route-refresh

refresh bgp

interface-peer/peer keychain

Use peer keychain to enable keychain authentication for a BGP peer or peer group.

Use undo peer keychain to remove keychain authentication for a BGP peer or peer group.

Syntax

peer { group-name | ip-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } keychain keychain-name

undo peer { group-name | ip-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } keychain

interface-peer interface-type interface-number keychain keychain-name

undo interface-peer interface-type interface-number keychain

Default

Keychain authentication is disabled.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ip-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ip-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command enables keychain authentication for all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command enables keychain authentication for all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

keychain-name: Specifies a keychain by its name, a case-sensitive string of 1 to 63 characters. The keychain must have been created.

Usage guidelines

Keychain authentication enhances the security of TCP connection establishment between BGP peers. It allows BGP peers to establish TCP connections only when the following conditions are met:

· Keychain authentication is enabled on both BGP peers.

· The keys used by the BGP peers at the same time must have the same ID.

· The keys with the same ID must use the same authentication algorithm and key string.

BGP supports the HMAC-MD5, HMAC-SM3, SM3, and MD5 authentication algorithms. To specify an authentication algorithm for a key, use the authentication-algorithm command.

The ID of keys used for authentication can only be in the range of 0 to 63. To create a key, use the key command.

The peer keychain and peer password commands are mutually exclusive.

Examples

# In BGP instance view, configure peer 10.1.1.1 to use keychain abc for authentication.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 10.1.1.1 as-number 100

[Sysname-bgp-default] peer 10.1.1.1 keychain abc

Related commands

authentication-algorithm (Security Command Reference)

key (Security Command Reference)

interface-peer/peer log-change

Use peer log-change to enable logging for BGP session state changes for a peer or peer group.

Use undo peer log-change to disable logging for BGP session state changes for a peer or peer group.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } log-change

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } log-change

interface-peer interface-type interface-number log-change

undo interface-peer interface-type interface-number log-change

Default

Logging for BGP session state changes is enabled for all peers or peer groups.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must already exist.

ipv4-address: Specifies the IPv4 address of a peer. The peer must already exist.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command enables the logging of BGP session state changes for all dynamic peers in the subnet.

ipv6-address: Specifies the IPv6 address of a peer. The peer must already exist.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command enables the logging of BGP session state changes for all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

After you execute both the log-peer-change and peer log-change commands, BGP logs session establishment and disconnection events for the peer or peer group. To view the log information, use the display bgp peer ipv4 unicast log-info command or the display bgp peer ipv6 unicast log-info command. The logs are sent to the information center of the device. The output rules of the logs (whether to output the logs and where to output) are determined by the information center configuration. For more information about information center configuration, see Network Management and Monitoring Configuration Guide.

If you disable logging for BGP session state changes globally or disable logging for a peer or peer group, BGP does not generate logs for session establishments and disconnections.

Examples

# In BGP instance view, enable logging for BGP session state changes for peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 as-number 200

[Sysname-bgp-default] peer 1.1.1.1 log-change

Related commands

display bgp peer

log-peer-change

interface-peer/peer low-memory-exempt

Use peer low-memory-exempt to configure BGP to protect EBGP peers or peer groups when the memory usage reaches level 2 threshold.

Use undo peer low-memory-exempt to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } low-memory-exempt

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } low-memory-exempt

interface-peer interface-type interface-number low-memory-exempt

undo interface-peer interface-type interface-number low-memory-exempt

Default

When the memory usage reaches level 2 threshold, BGP tears down an EBGP session to release memory resources periodically.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet in this command, BGP protects all dynamic peers in the subnet when the memory usage reaches level 2 threshold.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet in this command, BGP protects all dynamic peers in the subnet when the memory usage reaches level 2 threshold.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

When level 2 memory usage threshold is reached, BGP tears down an EBGP session to release memory resources periodically until the memory usage is exempt from level 2 threshold. You can use this command to avoid tearing down the BGP session to an EBGP peer when memory usage reaches level 2 threshold. For more information about thresholds, see Fundamentals Configuration Guide.

Examples

# In BGP instance view, configure BGP to protect EBGP peer 1.1.1.1 when the memory usage reaches level 2 threshold.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 as-number 200

[Sysname-bgp-default] peer 1.1.1.1 low-memory-exempt

interface-peer/peer next-hop-local

Use peer next-hop-local to set the local device as the next hop for routes sent to a peer or peer group.

Use undo peer next-hop-local to remove the configuration.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } next-hop-local

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } next-hop-local

In BGP VPNv4 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } next-hop-local

undo peer { group-name | ipv4-address [ mask-length ] } next-hop-local

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } next-hop-local

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } next-hop-local

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } next-hop-local

undo peer { group-name | ipv6-address [ prefix-length ] } next-hop-local

In BGP EVPN address family view/BGP dedicated address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } next-hop-local

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } next-hop-local

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number next-hop-local

undo interface-peer interface-type interface-number next-hop-local

Default

BGP sets the local device as the next hop for all routes sent to an EBGP peer or peer group.

BGP sets the local device as the next hop for EBGP routes sent to an IBGP peer or peer group for BGP VPNv4 or VPNv6 address family. It does not set the local device as the next hop for EBGP routes sent to an IBGP peer or peer group for other address families. When BGP sends ECMP routes to IBGP peers, it sets the local device IP as the next hop of the optimal route among these routes.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP EVPN address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP dedicated address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command sets the local device as the next hop for routes sent to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command sets the local device as the next hop for routes sent to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

By default, BGP does not set the local device as the next hop for EBGP routes sent to an IBGP peer or peer group. To ensure that an IBGP peer can find the next hop, you can use this command to specify the device as the next hop for routes sent to the IBGP peer.

The peer next-hop-local command is mutually exclusive with the peer next-hop-invariable command. Follow these restrictions and guidelines when you configure the commands for a peer or peer group:

· After you configure the peer next-hop-local command for a BGP peer group, you cannot configure the peer next-hop-invariable command for the peer group or any peer in the peer group.

· After you configure the peer next-hop-local command for a BGP peer, do not configure the peer next-hop-invariable command for the peer group to which the peer belongs. Otherwise, the configuration of the peer next-hop-invariable command will overwrite that of the peer next-hop-local command on the peer.

Examples

# In BGP IPv4 unicast address family view, specify the device as the next hop for routes sent to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test next-hop-local

R elated commands

peer next-hop-invariable (MPLS Command Reference)

peer next-hop-invariable (EVPN Command Reference)

interface-peer/peer nexthop-recursive-policy disable

Use peer nexthop-recursive-policy disable to disable route recursion policy control for routes received from the specified peer or peer group.

Use undo peer nexthop-recursive-policy disable to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } nexthop-recursive-policy disable

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } nexthop-recursive-policy disable

interface-peer interface-type interface-number nexthop-recursive-policy disable

undo interface-peer interface-type interface-number nexthop-recursive-policy disable

Default

The route recursion policy applies to routes received from the specified peer or peer group.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

If you configure routing policy-based recursive lookup for BGP routes, this route recursion policy applies to BGP routes learned from all peers. This command allows you to disable route recursion policy control for routes learned from certain peers, for example, direct EBGP peers.

Examples

# In BGP instance view, disable route recursion policy control for routes received from peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 as-number 200

[Sysname-bgp-default] peer 1.1.1.1 nexthop-recursive-policy disable

Related commands

protocol nexthop recursive-lookup

interface-peer/peer password

Use peer password to enable MD5 authentication for a BGP peer or peer group.

Use undo peer password to remove MD5 authentication for a BGP peer or peer group.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } password { cipher | simple } password

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } password

interface-peer interface-type interface-number password { cipher | simple } password

undo interface-peer interface-type interface-number password

Default

MD5 authentication is disabled.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command enables MD5 authentication for all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command enables MD5 authentication for all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

cipher: Specifies a password in encrypted form.

simple: Specifies a password in plaintext form. For security purposes, the password specified in plaintext form will be stored in encrypted form.

password: Specifies the password. Its encrypted form is a case-sensitive string of 33 to 137 characters. Its plaintext form is a case-sensitive string of 1 to 80 characters.

Usage guidelines

You can enable MD5 authentication to enhance security using the following methods:

· Perform MD5 authentication when establishing TCP connections. Only the two parties that have the same password configured can establish TCP connections.

· Perform MD5 calculation on TCP segments to avoid modification to the encapsulated BGP packets.

The peer password and peer keychain commands are mutually exclusive.

Examples

# In BGP instance view, perform MD5 authentication on the TCP connection between local router 10.1.100.1 and peer router 10.1.100.2. Set the authentication password to aabbcc in plaintext form.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 10.1.100.2 password simple aabbcc

interface-peer/peer preferred-value

Use peer preferred-value to set a preferred value for routes received from a peer or peer group.

Use undo peer preferred-value to remove the configuration.

Syntax

In BGP VPNv4 address family view/BGP VPNv6 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } preferred-value value

undo peer { group-name | ipv4-address [ mask-length ] } preferred-value

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } preferred-value value

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } preferred-value

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } preferred-value value

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } preferred-value

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } preferred-value value

undo peer { group-name | ipv6-address [ prefix-length ] } preferred-value

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number preferred-value value

undo interface-peer interface-type interface-number preferred-value

Default

The preferred value is 0 for routes received from a peer or peer group.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command specifies a preferred value for routes received from all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command specifies a preferred value for routes received from all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

value: Specifies a preferred value in the range of 0 to 65535.

Usage guidelines

If multiple routes that have the same destination are learned from different peers, you can specify different preferred values for the routes as needed to control BGP path selection. The one with the greatest preferred value is selected as the optimal route to the destination.

The preferred value is used for route selection on the local router and is not advertised to the peer. It has only local significance.

You can also use the apply preferred-value command in a routing policy to configure the preferred value for BGP routes. If both the peer preferred-value and apply preferred-value commands are configured, the apply preferred-value command applies. If the preferred value is not set in the routing policy or no routing policy is configured, the peer preferred-value command applies.

Examples

# In BGP IPv4 unicast address family view, set the preferred value to 50 for routes from peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer 1.1.1.1 preferred-value 50

Related commands

apply preferred-value

route-policy

interface-peer/peer prefix-list

Use peer prefix-list to specify a prefix list to filter routes received from or advertised to a peer or peer group.

Use undo peer prefix-list to remove the prefix list specified to filter routes received from or advertised to a peer or peer group.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length } prefix-list ipv4-prefix-list-name { export | import }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length } prefix-list [ ipv4-prefix-list-name ] { export | import }

In BGP VPNv4 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } prefix-list ipv4-prefix-list-name { export | import }

undo peer { group-name | ipv4-address [ mask-length ] } prefix-list [ ipv4-prefix-list-name ] { export | import }

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } prefix-list ipv6-prefix-list-name { export | import }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } prefix-list [ ipv6-prefix-list-name ] { export | import }

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } prefix-list ipv6-prefix-list-name { export | import }

undo peer { group-name | ipv6-address [ prefix-length ] } prefix-list [ ipv6-prefix-list-name ] { export | import }

In BGP VPNv6 address family view:

peer { group-name | ipv4-address [ mask-length ] } prefix-list ipv6-prefix-list-name { export | import }

undo peer { group-name | ipv4-address [ mask-length ] } prefix-list [ ipv6-prefix-list-name ] { export | import }

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

interface-peer interface-type interface-number prefix-list ipv4-prefix-list-name { export | import }

undo interface-peer interface-type interface-number prefix-list [ ipv4-prefix-list-name ] { export | import }

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number prefix-list ipv6-prefix-list-name { export | import }

undo interface-peer interface-type interface-number prefix-list [ ipv6-prefix-list-name ] { export | import }

Default

No prefix list based filtering is configured.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command uses a prefix list to filter routes received from or advertised to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command uses a prefix list to filter routes received from or advertised to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

ipv4-prefix-list-name: Specifies an IPv4 prefix list by its name, a case-sensitive string of 1 to 63 characters.

ipv6-prefix-list-name: Specifies an IPv6 prefix list by its name, a case-sensitive string of 1 to 63 characters.

export: Applies the filter to routes advertised to the specified peer/peer group.

import: Applies the filter to routes received from the specified peer/peer group.

Usage guidelines

The specified prefix list must have been created with the ip prefix-list or ipv6 prefix-list command in system view. If you specify a nonexistent IPv4/IPv6 prefix list, all routes can pass the prefix list.

Examples

# In BGP IPv4 unicast address family view, use IPv4 prefix list list1 to filter routes advertised to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test prefix-list list1 export

Related commands

filter-policy export

filter-policy import

ip prefix-list

ipv6 prefix-list

peer as-path-acl

peer filter-policy

peer route-policy

interface-peer/peer public-as-only

Use peer public-as-only to remove private AS numbers in BGP updates sent to an EBGP peer or peer group.

Use undo peer public-as-only to remove the configuration.

Syntax

In BGP VPNv4 address family view/BGP VPNv6 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } public-as-only [ { force | limited } [ replace ] [ include-peer-as ] ]

undo peer { group-name | ipv4-address [ mask-length ] } public-as-only [ { force | limited } [ replace ] [ include-peer-as ] ]

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } public-as-only [ { force | limited } [ replace ] [ include-peer-as ] ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } public-as-only [ { force | limited } [ replace ] [ include-peer-as ] ]

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } public-as-only [ { force | limited } [ replace ] [ include-peer-as ] ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } public-as-only [ { force | limited } [ replace ] [ include-peer-as ] ]

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } public-as-only [ { force | limited } [ replace ] [ include-peer-as ] ]

undo peer { group-name | ipv6-address [ prefix-length ] } public-as-only [ { force | limited } [ replace ] [ include-peer-as ] ]

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number public-as-only [ { force | limited } [ replace ] [ include-peer-as ] ]

undo interface-peer interface-type interface-number public-as-only [ { force | limited } [ replace ] [ include-peer-as ] ]

Default

BGP updates sent to an EBGP peer or peer group can carry both public and private AS numbers.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command removes private AS numbers in BGP updates sent to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command removes private AS numbers in BGP updates sent to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

force: Forcibly deletes or replaces all private AS numbers.

limited: Deletes or replaces private AS numbers from the left of the AS path attribute and stops the deletion or replacement when the local or public AS number appears.

replace: Replaces the private AS numbers in the AS path attribute with the local AS number. If you do not specify this keyword, the private AS numbers in the AS path attribute will be deleted.

include-peer-as: Deletes or replaces the private AS number of the specified peer or peer group in the AS path attribute. If you do not specify this keyword, the command does not delete or replace the private AS number of the specified peer or peer group in the AS path attribute.

Usage guidelines

Private AS numbers are typically used in test networks, and need not be transmitted in public networks. The range of private AS numbers is from 64512 to 65535.

If you do not specify the force or limited keyword when executing this command, the following rules apply:

· If the AS_PATH attribute of a BGP update carries only private AS numbers, the device removes the AS numbers before sending the update to the EBGP peer or peer group.

· The command does not take effect in either of the following situations:

¡ The AS_PATH attribute carries both public and private AS numbers.

¡ The AS_PATH attribute carries AS numbers of the peer or peer group.

This command is applicable only to EBGP peers and peer groups.

Editing the AS path attribute might cause routing loops. Please be cautious.

Examples

# In BGP IPv4 unicast address family view, remove private AS numbers in BGP updates sent to EBGP peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test public-as-only

interface-peer/peer reflect-client

Use peer reflect-client to configure the device as a route reflector and specify a peer or peer group as a client.

Use undo peer reflect-client to remove the configuration.

Syntax

In BGP VPNv4 address family view/BGP VPNv6 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } reflect-client

undo peer { group-name | ipv4-address [ mask-length ] } reflect-client

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP EVPN address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } reflect-client

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } reflect-client

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } reflect-client

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } reflect-client

In BGP LS address family view/BGP dedicated address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } reflect-client

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } reflect-client

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } reflect-client

undo peer { group-name | ipv6-address [ prefix-length ] } reflect-client

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number reflect-client

undo interface-peer interface-type interface-number reflect-client

Default

Neither the route reflector nor the client is configured.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP LS address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP dedicated address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command configures the device as a route reflector and specifies all dynamic peers in the subnet as clients.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command configures the device as a route reflector and specifies all dynamic peers in the subnet as clients.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

Using route reflectors can solve the issue brought by too many IBGP connections. After you configure a device as a route reflector in an AS, it advertises routes as follows:

· Advertises routes received from a non-client IBGP peer to all clients.

· Advertises routes received from an IBGP peer that acts as a client to all peers.

· Advertises routes received from an EBGP peer to all peers.

Examples

# In BGP IPv4 unicast address family view, configure the local device as a route reflector and specify IBGP peer group test as a client.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test reflect-client

Related commands

reflect between-clients

reflect change-path-attribute

reflector cluster-id

interface-peer/peer route-limit

Use peer route-limit to set the maximum number of routes that can be received from a peer or peer group.

Use undo peer route-limit to remove the configuration.

Syntax

In BGP VPNv4 address family view/BGP VPNv6 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } route-limit prefix-number [ { alert-only | discard | reconnect reconnect-time } | percentage-value ] *

undo peer { group-name | ipv4-address [ mask-length ] } route-limit

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } route-limit prefix-number [ { alert-only | discard | reconnect reconnect-time } | percentage-value ] *

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } route-limit

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } route-limit prefix-number [ { alert-only | discard | reconnect reconnect-time } | percentage-value ] *

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } route-limit

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } route-limit prefix-number [ { alert-only | discard | reconnect reconnect-time } | percentage-value ] *

undo peer { group-name | ipv6-address [ prefix-length ] } route-limit

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number route-limit prefix-number [ { alert-only | discard | reconnect reconnect-time } | percentage-value ] *

undo peer { group-name | ipv4-address [ mask-length ] } route-limit

undo interface-peer interface-type interface-number route-limit

Default

The number of routes that can be received from a peer or peer group is not limited.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP VPNv6 address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command specifies the maximum number of routes that can be received from all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command specifies the maximum number of routes that can be received from all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

prefix-number: Specifies the number of routes that can be received from the peer or peer group. Its value range is 1 to 4294967295.The router will tear down the session to the peer or peer group if the following conditions exist:

· The alert-only, discard, and reconnect keywords are not specified.

· The number of routes received from the peer or peer group reaches the prefix-number.

The router will not attempt to re-establish the session to a dynamic BGP peer until the router receives a connection request from the peer. For other peers, you can use the reset bgp command to re-establish the sessions.

alert-only: If the number of routes received from the peer or peer group reaches the prefix-number, the router generates a log message instead of tearing down the session to the peer or peer group. The router can continue to receive routes from the peer or peer group.

discard: If the number of routes received from the peer or peer group reaches the prefix-number, the router retains the session to the peer or peer group. However, it discards excess routes and generates a log message. After the number of routes received from the peer or peer group falls below the prefix-number, the router can continue to receive routes from the peer or peer group. To restore the discarded routes, use the refresh bgp import command to request the peer or peer group to resend the routes.

reconnect reconnect-time: Specifies a reconnect time. After the specified time is reached, the router re-establishes a session to the peer or peer group when the number of routes received from the peer or peer group reaches the prefix-number. The value range for the reconnect-time argument is 1 to 65535 seconds. This option is not available for dynamic BGP peers.

percentage-value: Specifies the threshold value for the router to generate a log message (the router generates a log message when the ratio of the number of received routes to the prefix-number exceeds the percentage value). The value range of this argument is 1 to 100, and the default is 75.

Usage guidelines

When the number of routes received from the specified peer or peer group reaches prefix-number, the discard keyword takes effect on the device as follows:

· The device retains the routes already received from the peer or peer group.

· If the device receives subsequent routes from the peer or peer group, it will discard these routes.

Examples

# In BGP IPv4 unicast address family view, set the maximum number of routes that can be received from peer 1.1.1.1 to 10000. Configure the router to tear down the session to the peer if the number is exceeded.

<Sysname> system-view

[Sysname] bgp 109

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer 1.1.1.1 route-limit 10000

interface-peer/peer route-policy

Use peer route-policy to apply a routing policy to routes incoming from or outgoing to a peer or peer group.

Use undo peer route-policy to remove the configuration.

Syntax

In BGP VPNv4 address family view/BGP VPNv6 address family view/BGP EVPN address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } route-policy route-policy-name { export | import }

undo peer { group-name | ipv4-address [ mask-length ] } route-policy [ route-policy-name ] { export | import }

In BGP-VPN VPNv4 address family view:

peer { group-name | ipv4-address [ mask-length ] } route-policy route-policy-name import

undo peer { group-name | ipv4-address [ mask-length ] } route-policy [ route-policy-name ] import

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP EVPN address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } route-policy route-policy-name { export | import }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } route-policy [ route-policy-name ] { export | import }

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } route-policy route-policy-name { export | import }

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } route-policy [ route-policy-name ] { export | import }

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } route-policy route-policy-name { export | import }

undo peer { group-name | ipv6-address [ prefix-length ] } route-policy [ route-policy-name ] { export | import }

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number route-policy route-policy-name { export | import }

undo interface-peer interface-type interface-number route-policy route-policy-name { export | import }

Default

No routing policy is applied to routes incoming from or outgoing to a peer or peer group.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP-VPN VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command applies a routing policy to routes incoming from or outgoing to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command applies a routing policy to routes incoming from or outgoing to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters.

export: Applies the routing policy to routes outgoing to the peer or peer group.

import: Applies the routing policy to routes incoming from the peer or peer group.

Usage guidelines

The specified routing policy must have been configured with the route-policy command in system view. If you specify a nonexistent routing policy, all routes can pass the routing policy.

The if-match interface command, if configured for the applied routing policy, does not take effect on routes.

Examples

# In BGP IPv4 unicast address family view, apply routing policy test-policy to routes outgoing to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test route-policy test-policy export

Related commands

filter-policy export

filter-policy import

peer as-path-acl

peer filter-policy

peer prefix-list

route-policy

interface-peer/peer route-update-interval

Use peer route-update-interval to specify an interval for sending the same update to a peer or peer group.

Use undo peer route-update-interval to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } route-update-interval interval

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } route-update-interval

interface-peer interface-type interface-number route-update-interval interval

undo interface-peer interface-type interface-number route-update-interval

Default

The interval for sending the same update to an IBGP peer is 15 seconds and the interval for sending the same update to an EBGP peer is 30 seconds.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command specifies an interval for sending the same update to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command specifies an interval for sending the same update to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

interval: Specifies a minimum interval for sending the same update message, in the range of 0 to 600 seconds.

Usage guidelines

A BGP router sends an update message to its peers when a route is changed. If the route changes frequently, the BGP router sends many updates for the route, resulting in routing flaps. By configuring the interval for sending the same update to a peer or peer group, you can avoid such routing flaps.

This command takes effect on withdrawn routes only after you apply the route update interval setting to withdrawn routes.

BGP compares the intervals specified for a BGP peer by using the peer route-update-interval and route-update-delay commands to get a minimum interval. Only the larger interval takes effect. If you did not execute the peer route-update-interval command, BGP uses the default value of this command to compare with the interval configured by the route-update-delay command.

Examples

# In BGP instance view, set the interval for sending the same update to peer group test to 10 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test as-number 100

[Sysname-bgp-default] peer test route-update-interval 10

Related commands

route-update-delay

route-update-interval withdrawn enable

interface-peer/peer soo

Use peer soo to configure the Site of Origin (SoO) attribute for a BGP peer or peer group.

Use undo peer soo to remove the configuration.

Syntax

In BGP VPNv4 address family view/BGP-VPN VPNv4 address family view/BGP VPNv6 address family viewBGP IPv4 multicast address family view:

peer { group-name | ipv4-address [ mask-length ] } soo site-of-origin

undo peer { group-name | ipv4-address [ mask-length ] } soo

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } soo site-of-origin

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } soo

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } soo site-of-origin

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } soo

In BGP IPv6 multicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } soo site-of-origin

undo peer { group-name | ipv6-address [ prefix-length ] } soo

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

interface-peer interface-type interface-number soo site-of-origin

undo interface-peer interface-type interface-number soo

Default

No SoO attribute is configured for a peer or peer group.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP-VPN VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

site-of-origin: Specifies the SoO attribute, a string of 3 to 21 characters. The SoO attribute has the following formats:

· 16-bit AS number:32-bit user-defined number. For example, 100:3.

· 32-bit IP address:16-bit user-defined number. For example, 192.168.122.15:1.

· 32-bit AS number:16-bit user-defined number, where the minimum value of the AS number is 65536. For example, 65536:1.

Usage guidelines

The SoO attribute specifies the site where the route was originated. It prevents advertising a route back to the originating site. If the AS-path attribute is lost, the router can use the SoO attribute to avoid routing loops.

After you configure the SoO attribute for a BGP peer or peer group, BGP adds the SoO attribute into the route updates received from the BGP peer or peer group. Before advertising route updates to the peer or peer group, BGP checks the SoO attribute of the route update against the configured SoO attribute. If they are the same, BGP does not advertise the route updates to the BGP peer or peer group to avoid loops.

If a PE configured with AS number substitution connects to multiple CEs in the same VPN site through different interfaces, routing loops will occur. To avoid routing loops, configure the same SoO attribute for the CEs on the PE.

Examples

# In BGP IPv4 unicast address family view, set the SoO attribute to 100:1 for peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4

[Sysname-bgp-default-ipv4] peer 1.1.1.1 soo 100:1

Related commands

peer substitute-as

interface-peer/peer substitute-as

Use peer substitute-as to replace the AS number of a peer or peer group in the AS_PATH attribute with the local AS number.

Use undo peer substitute-as to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } substitute-as

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } substitute-as

interface-peer interface-type interface-number substitute-as

undo interface-peer interface-type interface-number substitute-as

Default

The AS number of a peer or peer group in the AS_PATH attribute is not replaced.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command replaces the AS number of all dynamic peers in the subnet in the AS_PATH attribute with the local AS number.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command replaces the AS number of all dynamic peers in the subnet in the AS_PATH attribute with the local AS number.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

Usage guidelines

In MPLS L3VPN, if EBGP is used between PE and CE, sites in different geographical areas must have different AS numbers assigned to ensure correct route advertisement.

If different CEs use the same AS number, you must configure the relevant PE to replace the AS number of the attached CE as its own AS number. This ensures correct advertisement of private network routes.

Examples

# In BGP instance view, substitute the local AS number for the AS number of peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 substitute-as

Related commands

peer soo

interface-peer/peer timer

Use peer timer to set a keepalive interval and hold time for a peer or peer group.

Use undo peer timer to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } timer keepalive keepalive hold holdtime

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } timer

interface-peer interface-type interface-number timer keepalive keepalive hold holdtime

undo interface-peer interface-type interface-number timer

Default

The keepalive interval is 60 seconds, and the hold time is 180 seconds.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command configures a keepalive interval and hold time for all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command configures a keepalive interval and hold time for all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

keepalive keepalive: Sets a keepalive interval in the range of 0 to 21845 seconds.

hold holdtime: Sets a hold time in the range of 3 to 65535 seconds. The hold time must be at least three times the keepalive interval.

Usage guidelines

After establishing a BGP session, two routers send keepalive messages at the specified keepalive interval to each other to keep the session.

If a router receives no keepalive or update message from the peer within the hold time, it tears down the session.

The timers configured with this command are preferred to the timers configured with the timer command.

If the hold time settings on the local and peer routers are different, the smaller one is used.

If the hold time is set to 0, no keepalive message will be sent to the peer, and the peer session will never time out. If neither the hold time nor the keepalive interval is set to 0, the actual keepalive interval is the smaller one between one third of the hold time and the keepalive interval.

The timers configured with this command do not take effect until a session is re-established (for example, a session is reset).

Examples

# In BGP instance view, set the keepalive interval and hold time for peer group test to 60 seconds and 180 seconds, respectively.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test timer keepalive 60 hold 180

Related commands

display bgp peer

timer

interface-peer/peer timer connect-retry

Use peer timer connect-retry to set the session retry timer for a peer or peer group.

Use undo peer timer connect-retry to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } timer connect-retry retry-time

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } timer connect-retry

interface-peer interface-type interface-number timer connect-retry retry-time

undo interface-peer interface-type interface-number timer connect-retry

Default

The session retry timer is 32 seconds a peer or peer group.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command sets a connection retry timer for all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command sets a connection retry timer for all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface-type interface-number: Specifies an interface by its type and number.

interface-peer interface-type interface-number: Specifies peers that have been created through link-local addresses in the ND entries learned by the specified interface.

retry-time: Specifies a session retry timer in the range of 1 to 65535 seconds.

Usage guidelines

To speed up session establishment to a peer or peer group and route convergence, set a small session retry timer. If the BGP session flaps, you can set a large session retry timer to reduce the impact.

The timer set by the peer timer connect-retry command takes precedence over the timer set by the timer connect-retry command.

Examples

# In BGP instance view, set the session retry timer to 30 seconds for peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 timer connect-retry 30

Related commands

timer connect-retry

ip vpn-instance (BGP instance view)

Use ip vpn-instance to create a BGP-VPN instance and enter its view, or enter the view of an existing BGP-VPN instance.

Use undo ip vpn-instance to remove a BGP-VPN instance and all its configurations.

Syntax

ip vpn-instance vpn-instance-name

undo ip vpn-instance vpn-instance-name

Default

No BGP-VPN instances exist.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

vpn-instance-name: Specifies a VPN instance by its name, a case-sensitive string of 1 to 31 characters.

Usage guidelines

After you create a BGP peer in BGP-VPN instance view, the BGP routes learned from the peer are added into the routing table of the specified VPN instance.

This command and all commands in BGP-VPN instance view are typically executed on provider edge (PE) or Multi-VPN-Instance CE (MCE) devices. The commands add routes learned from different sites into different VPN instances.

Before you execute this command, you must perform the following tasks:

· Use the ip vpn-instance command to create the VPN instance in system view.

· Use the route-distinguisher command to configure a route distinguisher (RD) for the VPN instance.

Examples

# Create a BGP-VPN instance and enter its view.

<Sysname> system-view

[Sysname] ip vpn-instance vpn1

[Sysname-vpn-instance-vpn1] route-distinguisher 100:1

[Sysname-vpn-instance-vpn1] quit

[Sysname] bgp 100

[Sysname-bgp-default] ip vpn-instance vpn1

[Sysname-bgp-default-vpn1]

Related commands

ip vpn-instance (system view) (MPLS Command Reference)

route-distinguisher (MPLS Command Reference)

isolate enable

Use isolate enable to enable BGP isolation.

Use undo isolate enable to restore the default.

Syntax

isolate enable

undo isolate enable

Default

BGP isolation is disabled.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

To maintain a BGP network device, you can use BGP isolation to remove the device from the network. This feature reduces configuration workload and impact on the network by retaining the device configuration during the maintenance. After maintenance, you can disable BGP isolation to add the device back to the network.

BGP isolation works as follows:

1. BGP withdraws all routes advertised by the device except for the direct routes.

2. BGP keeps all routes learned from its peers.

3. Each peer of the device reselects an optimal route and updates the FIB table. During optimal route selection, the peers can still use the routes advertised by the device to forward traffic.

4. After an optimal route is selected and the FIB table is updated, the peers stop forwarding packets except for those destined for the device to the device. The device is fully isolated from the network and you can upgrade it.

5. After the maintenance, disable BGP isolation on the device to gracefully add it back to the network. After returning to the network, the device advertises and learns routes as follows:

¡ Advertises routes to its peers.

¡ Learns routes if BGP was restarted during the isolation.

To avoid isolation failure, do not use this feature when GR or NSR is enabled for the device.

Examples

# Isolate the device from the network in BGP instance view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] isolate enable

label-allocation-mode

Use label-allocation-mode to specify a label allocation mode.

Use undo label-allocation-mode to restore the default.

Syntax

label-allocation-mode { per-prefix | per-vrf }

undo label-allocation-mode

Default

BGP allocates labels on a per-next-hop basis.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

per-prefix: Allocates a label to each route prefix.

per-vrf: Allocates a label to each VPN instance.

Usage guidelines

CAUTION:

A change to the label allocation mode enables BGP to re-advertise all routes, which will cause temporary service interruption. Use this command with caution.

‌

BGP supports the following label allocation modes:

· Per-prefix—Allocates a label to each route prefix.

· Per-next-hop—Allocates a label to each next hop. This mode is applicable when the number of labels required by the per-prefix mode exceeds the maximum number of labels supported by the device.

· Per-VPN-instance—Allocates a label to each VPN instance. This mode is applicable when the number of labels required by the per-next-hop mode exceeds the maximum number of labels supported by the device.

When you specify the per-prefix or per-next-hop label allocation mode, you can execute the vpn popgo command to specify the POPGO forwarding mode on an egress PE. The egress PE will pop the label for each packet and forward the packet out of the interface corresponding to the label.

When you specify the per-VPN instance label allocation mode, do not execute the vpn popgo command because it is mutually exclusive with the label-allocation-mode per-vrf command. The egress PE will pop the label for each packet and forward the packet through the FIB table.

Examples

# Specify the per-prefix label allocation mode.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] label-allocation-mode per-prefix

Related commands

vpn popgo (MPLS Command Reference)

labeled-route ignore-no-tunnel

Use labeled-route ignore-no-tunnel to disable optimal route selection for labeled routes without tunnel information.

Use undo labeled-route ignore-no-tunnel to restore the default.

Syntax

labeled-route ignore-no-tunnel

undo labeled-route ignore-no-tunnel

Default

Labeled routes without tunnel information can participate in optimal route selection.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Examples

# Disable optimal route selection for labeled routes without tunnel information.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] labeled-route ignore-no-tunnel

log-peer-change

Use log-peer-change to enable logging for BGP session state changes globally.

Use undo log-peer-change to disable logging for BGP session state changes globally.

Syntax

log-peer-change

undo log-peer-change

Default

Logging for BGP session state changes is enabled globally.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

After you execute both the log-peer-change and peer log-change commands, BGP logs session establishment and disconnection events for the peer or peer group. To display the log information, use the display bgp peer ipv4 unicast log-info command or the display bgp peer ipv6 unicast log-info command. The logs are sent to the information center of the device. The output rules of the logs (whether to output the logs and where to output) are determined by the information center configuration. For more information about information center configuration, see Network Management and Monitoring Configuration Guide.

If you disable logging for BGP session state changes globally or disable logging for a peer or peer group, BGP does not generate logs for session establishments and disconnections.

Examples

# Enable logging for session state changes globally.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] log-peer-change

Related commands

display bgp peer

peer log-change

log-route-flap

Use log-route-flap to enable logging for BGP route flapping.

Use undo log-route-flap to restore the default.

Syntax

log-route-flap monitor-time monitor-count [ log-count-limit | route-policy route-policy-name ] *

undo log-route-flap

Default

Logging for BGP route flapping is disabled.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP-VPN VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

monitor-time: Specifies the monitoring interval for route flapping, in the range of 1 to 600 minutes.

monitor-count: Specifies the number of route flaps for triggering a log, in the range of 2 to 8.

log-count-limit: Specifies the maximum number of logs allowed to be generated in a minute. The value range for this argument is 1 to 600, and the default value is 200.

route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters.

Usage guidelines

This feature enables BGP to generate logs for BGP route flappings that trigger log generation. The generated logs are sent to the information center. For the logs to be output correctly, you must also configure information center on the device. For more information about the information center, see Network Management and Monitoring Configuration Guide.

This command is applicable only to incoming routes of the specified address family.

Examples

# In BGP IPv4 unicast address family view, enable logging for BGP route flapping. Set the monitoring interval to 10 minutes, the number of route flaps for triggering a log to 5, and the maximum number of allowed logs in a minute to 100.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] log-route-flap 10 5 100

network

Use network to inject a network to the BGP routing table and configure BGP to advertise the network.

Use undo network to remove a local network.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv4 multicast address family view:

network ipv4-address [ mask-length | mask ] [ route-policy route-policy-name ]

undo network ipv4-address [ mask-length | mask ]

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view/BGP IPv6 multicast address family view:

network ipv6-address prefix-length [ route-policy route-policy-name ]

undo network ipv6-address prefix-length

Default

BGP does not advertise local networks.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-address: Specifies an IPv4 network address. If you do not specify the mask or mask-length argument, natural mask is used.

mask-length: Specifies a mask length in the range of 0 to 32.

mask: Specifies a mask in dotted decimal notation.

ipv6-address: Specifies an IPv6 network address.

prefix-length: Specifies a prefix length in the range of 0 to 128.

route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters, to filter routes or set the route attributes.

Usage guidelines

The network to be injected must be available and active in the local IP routing table.

The ORIGIN attribute of the route injected with the network command is IGP.

When you execute the undo network command, you must specify the same mask or mask length/prefix length that you specified for the network command. Otherwise, the configuration cannot be removed.

Examples

# In BGP IPv4 unicast address family view, inject local network 10.0.0.0/16 to the BGP routing table.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] network 10.0.0.0 255.255.0.0

network short-cut

Use network short-cut to increase the preference for a received EBGP route. This EBGP route is called a shortcut route.

Use undo network short-cut to remove the configuration.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv4 multicast address family view:

network ipv4-address [ mask-length | mask ] short-cut

undo network ipv4-address [ mask-length | mask ] short-cut

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view/BGP IPv6 multicast address family view:

network ipv6-address prefix-length short-cut

undo network ipv6-address prefix-length short-cut

Default

A received EBGP route has a preference of 255.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-address: Specifies an IPv4 network address. If you do not specify the mask or mask-length argument, natural mask is used.

mask-length: Specifies a mask length in the range of 0 to 32.

mask: Specifies a mask for the network address, in dotted decimal notation.

ipv6-address: Specifies an IPv6 network address.

prefix-length: Specifies a prefix length in the range of 0 to 128.

Usage guidelines

Different routing protocols might find different routes to the same destination. However, not all of those routes are optimal. For route selection, routing protocols, direct routes, and static routes are assigned different preferences. The route with the highest preference is preferred.

By default, the preference of an EBGP route is lower than a local route. If a device has an EBGP route and a local route to reach the same destination, the device does not select the EBGP route. You can use the network shortcut command to configure the EBGP route to have the same preference as the local route so the EBGP route is more likely to become the optimal route.

You can use the preference command to modify the preferences for external and local BGP routes.

Examples

# In BGP IPv4 unicast address family view, increase the preference of EBGP route 10.0.0.0/16.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] network 10.0.0.0 255.255.0.0 short-cut

Related commands

preference

nexthop global-address-only

Use nexthop global-address-only to enable the device to advertise only the global unicast address in the NEXT_HOP attribute to its IPv6 peers.

Use undo nexthop global-address-only to restore the default.

Syntax

nexthop global-address-only

undo nexthop global-address-only

Default

If the local device has a link-local address, it advertises both the link-local address and the global unicast address in the NEXT_HOP attribute to the directly-connected IPv6 EBGP peers established with its global unicast address.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

A directly-connected IPv6 EBGP peer might fail to learn routes if it cannot parse a route update that contains both the link-local address and the global unicast address. To resolve this issue, execute this command to enable the local device to advertise only the global unicast address in the NEXT_HOP attribute to its IPv6 peers.

This command might not apply to EBGP peers established through directly connected broadcast interfaces. If the next hop of the advertised route and the directly connected broadcast interfaces belong to the same subnet, this command does not take effect.

Examples

# In BGP IPv6 unicast address family view, enable the device to advertise only the global unicast address in the NEXT_HOP attribute to its IPv6 peers.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv6 unicast

[Sysname-bgp-default-ipv6] nexthop global-address-only

nexthop recursive-lookup longest-match

Use nexthop recursive-lookup longest-match to specify the longest match principle for BGP next hop recursion.

Use undo nexthop recursive-lookup longest-match to restore the default.

Syntax

nexthop recursive-lookup longest-match [ route-policy route-policy-name ]

undo nexthop recursive-lookup longest-match

Default

By default, BGP first looks up in its directly connected routes for a recursive route during a route recursion. If no matching routes exist, BGP will look up in routes generated by all routing protocols based on the longest match principle.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters.

Usage guidelines

The default method for next hop recursion might cause packet forwarding failure. The device considers the next hop of a received BGP route as directly connected when the next hop belongs to the same subnet as a direct route. As a result, packet forwarding failure will occur when the device uses this BGP route to forward matching packets.

To resolve this issue, you can use this feature to ensure the recursive route is reachable. BGP will directly look up in routes generated by all routing protocols and select a matching route based on the longest match principle.

The nexthop recursive-lookup longest-match command applies to all BGP routes received from peers in one of the following scenarios:

· The route-policy route-policy-name option is not specified.

· The specified routing policy does not exist.

Examples

# Specify the longest match principle to recurse routes that pass routing policy policy1 in BGP IPv4 unicast address family view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] nexthop recursive-lookup longest-match route-policy policy1

non-stop-routing

Use non-stop-routing to enable BGP nonstop routing (NSR).

Use undo non-stop-routing to disable BGP NSR.

Syntax

non-stop-routing

undo non-stop-routing

Default

BGP NSR is disabled.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

BGP NSR ensures continuous routing by synchronizing BGP state and data information from the active BGP process to the standby BGP process. The standby BGP process can seamlessly take over all services when the active process fails.

Examples

# Enable BGP NSR.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] non-stop-routing

Related commands

display bgp non-stop-routing status

passwords

Use passwords to set the MD5 authentication password.

Use undo passwords to restore the default.

Syntax

passwords { cipher | simple } string

undo passwords

Default

The MD5 authentication password is not set.

Views

BGP RPKI server view

Predefined user roles

network-admin

mdc-admin

Parameters

cipher: Specifies a password in encrypted form.

simple: Specifies a password in plaintext form. For security purposes, the password specified in plaintext form will be stored in encrypted form.

string: Specifies the password. Its encrypted form is a case-sensitive string of 33 to 137 characters. Its plaintext form is a case-sensitive string of 1 to 80 characters.

Usage guidelines

This command can enhance security in the following ways:

· Perform MD5 authentication when establishing TCP connections. Only the two parties that have the same password configured can establish TCP connections.

· Perform MD5 calculation on the packets transmitted over the TCP connections to avoid packet modification.

Examples

# In BGP RPKI server view, set the MD5 authentication password.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] rpki

[Sysname-bgp-default-rpki] server tcp 1.1.1.1

[Sysname-bgp-default-rpki-server] passwords simple 123456

pd-monitor-mode enable

Use pd-monitor-mode enable to configure the BMP client to send peer down notifications with mode flags to the BMP server.

Use undo pd-monitor-mode enable to restore the default.

Syntax

pd-monitor-mode enable

undo pd-monitor-mode enable

Default

The BMP client sends peer down notifications without mode flags to the BMP server.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Execute this command to configure the BMP client to send peer down notifications with the following flags to the BMP server:

· Adj-RIB-In—The BMP client sends routes received from monitored peers to the BMP server.

· Adj-RIB-Out—The BMP client sends routes advertised to monitored peers to the BMP server.

· pre-policy—The BMP client sends routes to the BMP server without filtering.

· post-policy—The BMP client sends routes to the BMP server after filtering.

By default, the BMP client sends peer down notifications with the Adj-RIB-In and pre-policy flags to the BMP server after you execute this command.

After you delete the route sending mode by executing the route-mode adj-rib-in, route-mode adj-rib-out, or peer route-mode command, the BMP client will send peer down notifications with the new mode flag to the BMP server.

Examples

# Configure the BMP client to send peer down notifications with mode flags to the BMP server.

<Sysname> system-view

[Sysname] bmp server 1

[Sysname-bmpserver-1] pd-monitor-mode enable

Related commands

peer route-mode

route-mode adj-rib-in

route-mode adj-rib-out

peer as-number (for a BGP peer group)

Use peer as-number to specify an AS number for a peer group.

Use undo peer as-number to delete the AS number of a peer group.

Syntax

peer group-name as-number as-number

undo peer group-name as-number

Default

No AS number is specified for a peer group.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a name for a peer group, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

as-number: Specifies an AS number for a peer group, in the range of 1 to 4294967295.

Usage guidelines

This command applies only to a peer group with no peers in it.

When you specify an AS number for a peer group and want to add peers to it, make sure the AS number of the peers is the same as the peer group.

If you do not specify an AS number for a peer group, peers added to it can use their own AS numbers.

Examples

# In BGP instance view, set the AS number for peer group test to 100.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test as-number 100

Related commands

peer group

peer capability-advertise conventional

Use peer capability-advertise conventional to disable the BGP multi-protocol extension, route refresh, and 4-byte AS number features for a peer or peer group.

Use undo peer capability-advertise conventional to enable the BGP multi-protocol extension, route refresh, and 4-byte AS number features for a peer or peer group.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } capability-advertise conventional

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } capability-advertise conventional

Default

The BGP multi-protocol extension, route refresh, and 4-byte AS number features are enabled.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command disables BGP multi-protocol extension and route refresh for all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command disables BGP multi-protocol extension and route refresh for all dynamic peers in the subnet.

Usage guidelines

The route refresh feature enables BGP to send and receive Route-refresh messages and implement BGP session soft-reset.

The multi-protocol extension feature enables BGP to advertise and receive routing information for various protocols (for example, IPv6 routing information).

The 4-byte AS number feature enables BGP to use 4-byte AS numbers in the range of 1 to 4294967295.

If both the peer capability-advertise conventional and peer capability-advertise route-refresh commands are executed, the most recent configuration takes effect.

Examples

# In BGP instance view, disable the multi-protocol extension, route refresh, and 4-byte AS number features for peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 as-number 100

[Sysname-bgp-default] peer 1.1.1.1 capability-advertise conventional

Related commands

display bgp peer

peer capability-advertise route-refresh

peer capability-advertise orf non-standard

Use peer capability-advertise orf non-standard to enable nonstandard ORF capabilities negotiation for a peer or peer group.

Use undo peer capability-advertise orf non-standard to disable nonstandard ORF capabilities negotiation for a peer or peer group.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } capability-advertise orf non-standard

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } capability-advertise orf non-standard

Default

Nonstandard ORF capabilities negotiation is disabled for a peer or peer group.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ip-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command enables BGP to negotiate nonstandard ORF capabilities with all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command enables BGP to negotiate nonstandard ORF capabilities with all dynamic peers in the subnet.

Usage guidelines

To enable BGP peers to negotiate nonstandard ORF capabilities, you must configure this command together with the peer capability-advertise orf prefix-list command.

Examples

# Enable nonstandard ORF capabilities negotiation for peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 capability-advertise orf non-standard

Related commands

peer capability-advertise orf prefix-list

peer capability-advertise route-refresh

Use peer capability-advertise route-refresh to enable BGP route refresh for a peer or peer group.

Use undo peer capability-advertise route-refresh to disable BGP route refresh for a peer or peer group.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } capability-advertise route-refresh

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } capability-advertise route-refresh

Default

BGP route refresh is enabled.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command enables BGP route refresh for all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command enables BGP route refresh for all dynamic peers in the subnet.

Usage guidelines

The route refresh feature enables BGP to send and receive Route-refresh messages.

BGP uses the route refresh feature to implement BGP session soft-reset. After a policy is modified, the router advertises a Route-refresh message to the peers. The peers resend their routing information to the router. After receiving the routing information, the router filters the routing information by using the new policy. This method allows you to refresh the BGP routing table and apply the new route selection policy without tearing down BGP sessions.

BGP route refresh requires that both the local router and the peer support route refresh.

If both the peer capability-advertise route-refresh and peer capability-advertise conventional commands are executed, the most recent configuration takes effect.

Examples

# In BGP instance view, enable BGP route refresh for peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 as-number 100

[Sysname-bgp-default] peer 1.1.1.1 capability-advertise route-refresh

Related commands

display bgp peer

peer capability-advertise conventional

peer keep-all-routes

refresh bgp

peer capability-advertise suppress-4-byte-as

Use peer capability-advertise suppress-4-byte-as to enable 4-byte AS number suppression.

Use undo peer capability-advertise suppress-4-byte-as to disable 4-byte AS number suppression.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } capability-advertise suppress-4-byte-as

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } capability-advertise suppress-4-byte-as

Default

The 4-byte AS number suppression feature is disabled.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command enables 4-byte AS number suppression for all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command enables 4-byte AS number suppression for all dynamic peers in the subnet.

Usage guidelines

BGP supports 4-byte AS numbers. The 4-byte AS number occupies four bytes, in the range of 1 to 4294967295. By default, a device sends an Open message to the peer device for session establishment. The Open message indicates that the device supports 4-byte AS numbers. If the peer device supports 2-byte AS numbers instead of 4-byte AS numbers, the session cannot be established. To resolve this issue, enable the 4-byte AS number suppression feature. The device then sends an Open message to inform the peer that it does not support 4-byte AS numbers, so the BGP session can be established.

If the peer device supports 4-byte AS numbers, do not enable the 4-byte AS number suppression feature. If this feature is enabled, the BGP session cannot be established.

Examples

# In BGP instance view, enable 4-byte AS number suppression for peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 as-number 100

[Sysname-bgp-default] peer 1.1.1.1 capability-advertise suppress-4-byte-as

Related commands

display bgp peer

peer connect-interface

Use peer connect-interface to specify a source interface (IPv4 address/IPv6 address) for establishing TCP connections to a peer or peer group.

Use undo peer connect-interface to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } connect-interface interface-type interface-number

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } connect-interface

Default

BGP uses the primary IPv4 or IPv6 address of the output interface in the optimal route destined for the BGP peer or peer group as the source address.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command specifies a source interface for establishing TCP connections to all dynamic peers in the network.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command specifies a source interface for establishing TCP connections to all dynamic peers in the subnet.

interface-type interface-number: Specifies an interface by its type and number.

Usage guidelines

The peer connect-interface command and the peer source-address command can both change the source address for establishing TCP connections. If you execute both commands, the most recent configuration takes effect.

The peer source-address and peer connect-interface commands are applicable to the following scenarios:

· The peer's IPv4/IPv6 address does not belong to the interface directly connected to the local router. To ensure successful TCP connection establishment, use one of the following methods:

¡ Specify the interface to which the IPv4/IPv6 address belongs as the source interface on the peer.

¡ Specify the IPv4/IPv6 address of the interface directly connected to the local router as the source address on the peer.

· A BGP peer at an IPv6 link-local address must be directly connected to the local router. On the local router, you must use the peer connect-interface command to specify the interface directly connected to the BGP peer as the source interface of TCP connections.

· On a BGP router that has multiple links to a peer, the source interface for TCP connection changes because the primary source interface fails. To avoid this problem, specify a loopback interface as the source interface or specify the IP address of a loopback interface as the source address.

· You want to establish multiple BGP sessions to a router. In this case, BGP might fail to determine the source address for each TCP connection based on the optimal route to the peer. To prevent this problem, use one of the following methods:

¡ If the BGP sessions use IP addresses of different interfaces, specify a source interface or source address for each session.

¡ If the BGP sessions use different IP addresses of the same interface, specify a source address for each session.

The source interfaces on the local router and the peer must be reachable to each other.

BGP immediately tears down the session to an IBGP peer or peer group when the following conditions exist:

· The source interface of TCP connections to the IBGP peer or peer group is a physical interface.

· The source interface fails and the link to the IBGP peer or peer group goes down.

To specify an indirectly connected interface on an EBGP peer as the source interface, use the peer ebgp-max-hop command. The command allows the establishment of an EBGP session to the indirectly connected peer.

If an interface has multiple IPv4 addresses, BGP uses the primary IPv4 address to establish TCP connections. If an interface has multiple IPv6 addresses, BGP selects a source IPv6 address. To use an IPv6 address as the source address, specify that IPv6 address by using the peer source-address command.

If you execute this command for a peer group, the configuration does not take effect on peers established through link-local addresses.

Examples

# In BGP instance view, specify loopback 0 as the source interface for TCP connections to peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test connect-interface loopback 0

Related commands

peer ebgp-max-hop

peer source-address

peer ebgp-max-hop

Use peer ebgp-max-hop to enable BGP to establish an EBGP session to an indirectly connected peer or peer group and specify the maximum hop count.

Use undo peer ebgp-max-hop to disable BGP from establishing an EBGP session to an indirectly connected peer or peer group.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } ebgp-max-hop [ hop-count ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } ebgp-max-hop

Default

BGP does not establish an EBGP session to an indirectly connected peer or peer group.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet in this command, BGP establishes EBGP sessions to all indirectly connected dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet in this command, BGP establishes EBGP sessions to all indirectly connected dynamic peers in the subnet.

hop-count: Specifies the maximum number of hop counts, in the range of 1 to 255. The default is 64.

Usage guidelines

To become EBGP peers, two routers must be directly connected and use directly connected interfaces to establish an EBGP session. If they are not directly connected, use the peer ebgp-max-hop command to establish an EBGP session over multiple hops between two peers.

This command takes effect only on routes received after you execute this command. To apply this command to existing routes, use the refresh bgp command to soft-reset BGP sessions.

When the BGP GTSM feature is enabled, two peers can establish an EBGP session after passing GTSM check, regardless of whether the maximum number of hops is reached.

Examples

# In BGP instance view, enable BGP to establish EBGP sessions to indirectly connected EBGP peer group test, and set the maximum hop count to 64 (default).

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test ebgp-max-hop

Related commands

peer ttl-security

peer label-route-capability

Use peer label-route-capability to enable BGP to exchange labeled routes with a peer or peer group.

Use undo peer label-route-capability to disable BGP from exchanging labeled routes with a peer or peer group.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv6 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] } label-route-capability

undo peer { group-name | ipv4-address [ mask-length ] } label-route-capability

In BGP-VPN IPv6 unicast address family view:

peer ipv4-address [ mask-length ] label-route-capability

undo peer ipv4-address [ mask-length ] label-route-capability

Default

BGP cannot exchange labeled routes with a peer or peer group.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet in this command, BGP exchanges labeled routes with all dynamic peers in the subnet.

Usage guidelines

On an inter-AS option C network, use this command in BGP IPv4 unicast or BGP-VPN IPv4 unicast address family view to exchange labeled IPv4 unicast routes for inter-AS public LSP establishment.

On a 6PE network, use this command in BGP IPv6 unicast address family view to exchange labeled IPv6 unicast routes for forwarding IPv6 packets over an IPv4 network.

Examples

# In BGP IPv4 unicast address family view, enable BGP to exchange labeled IPv4 routes with peer 2.2.2.2.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4

[Sysname-bgp-default-ipv4] peer 2.2.2.2 label-route-capability

peer route-mode

Use peer route-mode enable BGP to send routes exchanged with the specified monitored peer or peer group to the BMP server

Use undo peer route-mode to restore the default.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } route-mode { adj-rib-in { pre-policy | post-policy | both } | adj-rib-out { pre-policy | post-policy | both } } *

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } route-mode

Default

BGP determines whether to send routes exchanged with a peer or peer group to the BMP server based on the following configurations:

· Configuration of the route-mode adj-rib-in command in BMP server view.

· Configuration of the route-mode adj-rib-out command in BMP server view.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

adj-rib-in: Sends routes received from the specified monitored peer or peer group to the BMP server.

adj-rib-out: Sends routes advertised to the specified monitored peer and peer group to the BMP server.

pre-policy: Sends routes to the BMP server without route filtering.

post-policy: Sends routes to the BMP server after route filtering.

both: Sends both filtered and unfiltered routes to the BMP server.

Usage guidelines

To enable BGP to send routes exchanged with a peer or peer group to the BMP server, make sure BGP has established a TCP connection to the BMP server.

The configuration of the route-mode adj-rib-in or route-mode adj-rib-out command in BMP server view takes effect on all peers and peer groups. The configuration of the peer route-mode command in BGP instance view or BGP-VPN instance view takes effect only on the specified peer or peer group.

For a BGP peer, the following rules apply when BGP determines the type of routes to send to the BMP server:

· The route type specified by the peer route-mode command takes precedence over that specified by the bmp server monitor current-instance route-mode command.

· The route type specified by the bmp server monitor current-instance route-mode command takes precedence over that specified by the bmp server monitor all-vpn-instance route-mode command.

· The route type specified by the bmp server monitor all-vpn-instance route-mode command takes precedence over that specified by the route-mode adj-rib-out or route-mode adj-rib-out command.

If you execute this command multiple times for a peer or peer group, the most recent configuration takes effect.

Examples

# Send routes received from peer 1.1.1.1 to the BMP server without route filtering.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 route-mode adj-rib-in pre-policy

Related commands

bmp server monitor current-instance

bmp server monitor all-vpn-instance

route-mode adj-rib-in

route-mode adj-rib-out

peer route-priority-track

Use peer route-priority-track to associate a BGP peer or peer group with a track entry. BGP can adjust the priority of routes received from the peer or peer group based on the track entry state.

Use undo peer route-priority-track to remove the configuration.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } route-priority-track track-entry-number

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } route-priority-track

Default

BGP does not use track entries for route priority adjustment.

Views

BGP IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP-VPN IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command associates a track entry to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command associates a track entry to all dynamic peers in the subnet.

track-entry-number: Specifies a track entry by its number. The value range for this argument is 1 to 1024.

Usage guidelines

This feature enables BGP to monitor the session to each peer, such as the link state of a peer interface. BGP can adjust the priority of routes received from a peer or peer group based on the track entry state. If a network state change occurs, BGP can response quickly to avoid traffic loss due to network issues, such as link failures.

After BGP associates a track entry with a peer, BGP adjusts the priority of the routes received from the peer as follows:

· When the state of the associated track entry becomes negative, BGP increases the MED value of the routes to the maximum and set the route priority to the lowest.

· When the state of the associated track entry restores to positive, BGP restores the MED value and the priority of the routes to the original values.

When you specify a track entry to be associated with a peer, the track entry must have been created. As a best practice, use a track entry associated with the link state of the peer interface. The track feature can obtain the link state of the peer interface easily and notify BGP to adjust the route priority when the link state changes to down.

For more information about track entries, see track configuration in High Availability Configuration Guide.

Examples

# In BGP IPv4 unicast address family view, associate a track entry with a BGP peer.

<Sysname> system-view

[Sysname] track 1 interface GigabitEthernet2/0/1

[Sysname-track-1] quit

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4

[Sysname-bgp-default-ipv4] peer 10.1.1.2 route-priority-track 1

peer route-server-client

Use peer route-server-client to configure the device as a route server and specify a peer or peer group as a client.

Use undo peer route-server-client to remove the configuration.

Syntax

In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view:

peer { group-name | ipv4-address [ mask-length ] } route-server-client [ external ]

undo peer { group-name | ipv4-address [ mask-length ] } route-server-client

In BGP IPv6 unicast address family view/BGP-VPN IPv6 unicast address family view:

peer { group-name | ipv6-address [ prefix-length ] } route-server-client [ external ]

undo peer { group-name | ipv6-address [ prefix-length ] } route-server-client

In BGP EVPN address family view:

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } route-server-client [ external ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } route-server-client

Default

Neither the route server nor the client is configured.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP EVPN address family view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command configures the device as a route server and specifies all dynamic peers in the subnet as clients.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command configures the device as a route server and specifies all dynamic peers in the subnet as clients.

external: Applies this feature only to EBGP routes. After you specify this keyword, this command does not take effect on IBGP routes.

Usage guidelines

Some networks require the border devices in multiple ASs to establish full mesh connections, which consumes many network resources and reduces device performance. To resolve this issue, configure a device as a route server and the border devices in different ASs as its clients as needed.

Once a device is configured as a route server, it advertises routes to the clients without changing their AS path, next hop, and MED attributes. The clients can exchange routes without establishing EBGP connections and forward traffic to each other without the participation of the route server.

If you do not specify the external keyword, the route server advertises IBGP routes to its clients without changing the routes' AS path, next hop, and MED attributes. As a result, these routes might be unusable for EBGP peers. To resolve this issue, specify the external keyword when you use this command. The route server can change the AS path, next hop, and MED attributes of IBGP routes before advertising them to the clients.

The EBGP routes advertised to the clients does not carry the AS number of the route server. To avoid peer establishment failures, execute the peer ignore-first-as command on the clients.

This command is mutually exclusive with one of the following commands:

· peer label-route-capability

· confederation id

· confederation peer-as

· confederation nonstandard commands

Examples

# Configure peer group test as a client in BGP IPv4 unicast address family view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] peer test route-server-client

peer source-address

Use peer source-address to specify a source IPv4 or IPv6 address for establishing TCP connections to a peer or peer group.

Use undo peer source-address to remove the configuration.

Syntax

peer ipv4-address [ mask-length ] source-address source-ipv4-address

peer ipv6-address [ prefix-length ] source-address source-ipv6-address

undo peer { ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } source-address

peer group-name source-address { source-ipv4-address | source-ipv6-address } *

undo peer group-name source-address [ source-ipv4-address | source-ipv6-address ]

Default

BGP uses the primary IPv4 or IPv6 address of the output interface in the optimal route destined for the BGP peer or peer group as the source address for TCP connection establishment.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command specifies a source IP address for establishing TCP connections to all dynamic peers in the subnet.

source-ipv4-address: Specifies a source IPv4 address.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command specifies a source IPv6 address for establishing TCP connections to all dynamic peers in the subnet.

source-ipv6-address: Specifies a source IPv6 address.

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

Usage guidelines

The peer source-address and peer connect-interface commands are applicable to the following scenarios:

· The peer's IPv4/IPv6 address does not belong to the interface directly connected to the local router. To ensure successful TCP connection establishment, use one of the following methods:

¡ Specify the interface to which the IPv4/IPv6 address belongs as the source interface on the peer.

¡ Specify the IPv4/IPv6 address of the interface directly connected to the local router as the source address on the peer.

¡ If the BGP sessions use IP addresses of different interfaces, specify a source interface or source address for each session.

¡ If the BGP sessions use different IP addresses of the same interface, specify a source address for each session.

The source addresses on the local router and the peer must be reachable to each other.

To specify the address of an indirectly connected interface as the source address, use the peer ebgp-max-hop command. The command allows the establishment of an EBGP session to the indirectly connected peer.

You can specify both a source IPv4 address and a source IPv6 address for a peer group. BGP uses the source IPv4 address to establish TCP connections to IPv4 peers in the group. It also uses the source IPv6 address to establish TCP connections to IPv6 peers in the group.

Examples

# In BGP instance view, specify source IPv4 address 1.1.1.1 for peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test source-address 1.1.1.1

Related commands

peer connect-interface

peer ebgp-max-hop

peer tcp-mss

Use peer tcp-mss to s et the TCP maximum segment size (MSS) for a peer or peer group.

Use undo peer tcp-mss to restore the default.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } tcp-mss mss-value

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | link-local-address interface interface-type interface-number } tcp-mss

Default

The TCP MSS is not set.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

mask-length: Specifies a mask length in the range of 0 to 32. If you use the ipv4-address and mask-length arguments together to specify a subnet, this command applies to all dynamic peers in the subnet.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

prefix-length: Specifies a prefix length in the range of 0 to 128. If you use the ipv6-address and prefix-length arguments together to specify a subnet, this command applies to all dynamic peers in the subnet.

link-local-address: Specifies a peer by its link-local address.

interface interface-type interface-number: Specifies a peer-facing interface by its type and number.

mss-value: Specifies the TCP MSS in bytes. The value range for this argument is 176 to 4096.

Usage guidelines

BGP typically establishes a multihop TCP connection with a peer. Multiple intermediate devices might fragment BGP packets due to their MTU settings, resulting in frequent packet encapsulations and decapsulations that reduce forwarding efficiency.

To resolve this issue, you can execute this command to set the TCP MSS for a peer or peer group. TCP segments sent by the source will not be re-fragmented along the path to the destination.

This command might cause BGP session re-establishment. Make sure you understand the potential impact before executing this command.

During TCP connection establishment with the peer or peer group specified in the peer tcp-mss command, the minimum of the following MSSs takes effect:

· The MSS calculated according to the IPv4 MTU set by the ip mtu command on the peer-facing interface.

· The MSS set by the tcp mss command for the peer-facing interface.

· The MSS calculated according to the path MTU detected by TCP path MTU discovery (enabled with the tcp path-mtu-discovery command).

· The MSS set by the peer tcp-mss command.

The MSS is calculated by using the following formula:

MSS = path MTU (or interface MTU) – IP header length – TCP header length

For more information about MTU and MSS, see IP performance optimization configuration in Layer 3—IP Services Configuration Guide.

Examples

# Set the TCP MSS to 500 for peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test tcp-mss 500

Warning:This operation might reset the peer session. Continue? [Y/N]:

Related commands

tcp path-mtu-discovery (Layer 3 —IP Services Command Reference)

peer tracking

Use peer tracking to enable peer unreachability detection.

Use undo peer tracking to disable p eer unreachability detection.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } tracking [ delay delay-time ]

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } tracking

Default

Peer unreachability detection is disabled.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

delay delay-time: Sets the delay time of peer disconnection in seconds. The value range for the delay-time argument is 0 to 65535. If you specify this option, BGP disconnects from the specified peer or peer group immediately if that peer or peer group is detected unreachable.

Usage guidelines

Peer unreachability detection enables BGP to discover link failures quickly. With this feature enabled, BGP will disconnect from the specified peer or peer group if that peer or peer group is detected unreachable.

BGP considers a peer unreachable if one of the following conditions exists:

· BGP cannot find a route to that peer in the current routing table.

· BGP finds the route to that peer in the current routing table is a blackhole route.

When you set the delay time of peer disconnection, follow these guidelines to improve network stability:

· To avoid BGP session flappings caused by unstable traffic, make sure the delay time of peer disconnection is longer than the convergence time of IGP routes.

· With peer unreachability detection enabled, the GR helper can detect whether the GR restarter is reachable. To ensure successful GR, make sure the delay time of peer disconnection is longer than the GR timer plus the extra timer to wait.

For more information about the GR timer and the extra timer to wait, see commands "graceful-restart timer restart" and "interface-peer/peer graceful-restart timer restart extra".

This command does not take effect if you specify a link-local address for the ipv6-address argument.

Examples

# Enable peer unreachability detection for peer 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer 1.1.1.1 as-number 200

[Sysname-bgp-default] peer 1.1.1.1 tracking

peer ttl-security

Use peer ttl-security to configure Generalized TTL Security Mechanism (GTSM) for a BGP peer or peer group.

Use undo peer ttl-security to disable BGP GTSM for a peer or peer group.

Syntax

peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } ttl-security hops hop-count

undo peer { group-name | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] } ttl-security hops

Default

GTSM is disabled for BGP.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created.

ipv4-address: Specifies a peer by its IPv4 address. The peer must have been created.

ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.

hops hop-count: Specifies the maximum number of hops to the specified peer, in the range of 1 to 254.

Usage guidelines

GTSM protects a BGP session by comparing the TTL value of an incoming IP packet against the valid TTL range. If the TTL value is within the valid TTL range, the packet is accepted. If not, the packet is discarded.

The valid TTL range is from 255 – the configured hop count + 1 to 255.

When GTSM is configured, the BGP packets sent by the device have a TTL of 255.

When GTSM is configured, the local device can establish an EBGP session to the peer after they pass GTSM check, regardless of whether the maximum number of hops is reached.

To use GTSM, you must configure GTSM on both the local and peer devices. You can specify different hop-count values for them.

Examples

# In BGP instance view, enable GTSM for BGP peer group test and set the maximum number of hops to the specified peer in the peer group to 1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] peer test ttl-security hops 1

Related commands

peer ebgp-max-hop

pic

Use pic to enable BGP FRR for a BGP address family.

Use undo pic to disable BGP FRR for a BGP address family.

Syntax

pic

undo pic

Default

BGP FRR is disabled.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

FRR is used in a dual-homing network to protect a primary route with a backup route. It uses ARP (for IPv4), ND (for IPv6), or echo-mode BFD (for IPv4) to detect the connectivity of the primary route. When the primary route fails, BGP directs packets to the backup route.

After you enable FRR, BGP calculates a backup route for each BGP route in the address family if there are two or more unequal-cost routes to reach the destination.

You can also configure BGP FRR by using the fast-reroute route-policy command, which takes precedence over the pic command. For more information about routing policies, see Layer 3—IP Routing Configuration Guide.

Use the pic command with caution because it might cause routing loops in specific scenarios.

Examples

# Enable BGP FRR in BGP IPv4 unicast address family view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] pic

Related commands

fast-reroute route-policy

port

Use port to specify the port number of the RPKI server.

Use undo port to restore the default.

Syntax

port port-number

undo port

Default

The port number of the RPKI server is not specified.

Views

BGP RPKI server view

Predefined user roles

network-admin

mdc-admin

Parameters

port-number: Specifies the port number of the RPKI server, in the range of 1 to 65535.

Usage guidelines

After you specify the IP address and port number of the RPKI server, the device automatically establishes a TCP connection to the server.

Make sure the specified port number is the same as the port number used by the RPKI server.

Changing the port number will cause temporary connection interruption.

Examples

# In BGP RPKI server view, specify 1234 as the port number of the RPKI server.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] rpki

[Sysname-bgp-default-rpki] server tcp 1.1.1.1

[Sysname-bgp-default-rpki-server] port 1234

Related commands

server tcp

preference

Use preference to configure preferences for BGP routes.

Use undo preference to restore the default.

Syntax

preference { external-preference internal-preference local-preference | route-policy route-policy-name }

undo preference

Default

The preferences of external, internal, and local BGP routes are 255, 255, and 130, respectively.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

external-preference: Specifies a preference for EBGP routes, in the range of 1 to 255.

internal-preference: Specifies a preference for IBGP routes, in the range of 1 to 255.

local-preference: Specifies a preference for local routes, in the range of 1 to 255.

route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters, to set the route preference for matching routes. Routes not matching the routing policy use the default preference.

Usage guidelines

Configuring the preferences for BGP routes changes the possibility for the routes to become the optimal route.

To use a routing policy to set the preference, you must configure the preference with the apply preference command in the routing policy in advance. Otherwise, all matching routes use the default preference.

Examples

# In BGP IPv4 unicast address family view, set preferences for EBGP, IBGP, and local routes to 20, 20, and 200, respectively.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] preference 20 20 200

primary-path-detect bfd

Use primary-path-detect bfd to configure BGP FRR to use BFD to detect next hop connectivity for the primary route.

Use undo primary-path-detect bfd to restore the default.

Syntax

primary-path-detect bfd ctrl

undo primary-path-detect bfd

Default

BGP FRR uses ARP to detect the connectivity to the next hop of the primary route.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

ctrl: Uses control-mode BFD to detect the connectivity to the next hop of the primary route.

Usage guidelines

This command enables BGP to create an IP FRR BFD session that detects next hop connectivity for the primary route. This can speed up primary and backup route switchover when the next hop of the primary route fails.

This command takes effect and creates an IP FRR BFD session only when the primary route has a backup next hop.

BGP does not support backup next hop calculation for the routes used for load balancing. This command cannot take effect when the primary route is an ECMP route.

BGP can establish a control-mode BFD session with a peer only after negotiation. To use control-mode BFD to detect the next hop of the primary link, perform one of the following tasks:

· Configure the primary-path-detect bfd command on the peer device in the primary link.

This task is applicable when both ends of the primary link are configured with FRR.

· Manually configure a static BFD session that uses the following settings on the peer device in the primary link:

¡ Source IP address: Destination IP address of the BFD session automatically created on the local device in the primary link.

¡ Destination IP address: Source IP address of the BFD session automatically created on the local device in the primary link.

¡ Remote ID: Local ID of the BFD session automatically created on the local device in the primary link.

When another routing protocol (such as OSPF or IS-IS) uses BFD to detect next hop connectivity for the primary route, it also creates a BFD session. If the detected link is the same as the link attached to the next hop of the BGP primary route, BGP reuses the BFD session created by the protocol. In this situation, BGP will not create an additional BFD session.

If you execute this command multiple times, the most recent configuration takes effect.

Examples

# In BGP instance view, configure BGP FRR to use control-mode BFD to detect next hop connectivity for the primary route.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] primary-path-detect bfd ctrl

Related commands

fast-reroute route-policy

pic

pu-monitor-mode enable

Use pu-monitor-mode enable to configure the BMP client to send peer up notifications with mode flags to the BMP server.

Use undo pu-monitor-mode enable to restore the default.

Syntax

pu-monitor-mode enable

undo pu-monitor-mode enable

Default

The BMP client sends peer up notifications without mode flags to the BMP server.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Execute this command to configure the BMP client to send peer up notifications with the following flags to the BMP server:

· Adj-RIB-In—The BMP client sends routes received from monitored peers to the BMP server.

· Adj-RIB-Out—The BMP client sends routes advertised to monitored peers to the BMP server.

· pre-policy—The BMP client sends routes to the BMP server without filtering.

· post-policy—The BMP client sends routes to the BMP server after filtering.

By default, the BMP client sends peer up notifications with the Adj-RIB-In and pre-policy flags to the BMP server after you execute this command.

After you add a route sending mode by executing the route-mode adj-rib-in, route-mode adj-rib-out, or peer route-mode command, the BMP client will send peer up notifications with the new mode flag to the BMP server.

Examples

# Configure the BMP client to send peer up notifications with mode flags to the BMP server.

<Sysname> system-view

[Sysname] bmp server 1

[Sysname-bmpserver-1] pu-monitor-mode enable

Related commands

peer route-mode

route-mode adj-rib-in

route-mode adj-rib-out

purge-time

Use purge-time to set the aging time for the ROA information.

Use undo purge-time to restore the default.

Syntax

purge-time purge-time

undo purge-time

Default

The aging time for the ROA information is 60 seconds.

Views

BGP RPKI server view

Predefined user roles

network-admin

mdc-admin

Parameters

purge-time: Specifies the aging time for the ROA information, in the range of 30 to 360 seconds.

Usage guidelines

When the connection between a router and an RPKI server goes down (except when the shutdown command is executed), the router takes the following actions:

· Attempts to reconnect to the server.

· Places the ROA information obtained from the server in aging state, and starts the aging timer for the ROA information.

If the router reconnects to the server before the aging timer expires, it releases the ROA information from the aging state. If the router fails to reconnect to the server when the aging timer expires, it deletes the ROA information obtained from the server.

Examples

# Set the aging time for the ROA information to 150 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] rpki

[Sysname-bgp-default-rpki] server tcp 1.1.1.1

[Sysname-bgp-default-rpki-server] purge-time 150

reflect between-clients

Use reflect between-clients to enable route reflection between clients.

Use undo reflect between-clients to disable route reflection between clients.

Syntax

reflect between-clients

undo reflect between-clients

Default

Route reflection between clients is enabled.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP LS address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP dedicated address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

When a route reflector is configured, and the clients of a route reflector are fully meshed, route reflection is unnecessary because it consumes more bandwidth resources. You can use the undo reflect between-clients command to disable route reflection instead of modifying network configuration or changing network topology.

After route reflection is disabled between clients, routes can still be reflected between a client and a non-client.

Examples

# In BGP IPv4 unicast address family view, disable route reflection between clients.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] undo reflect between-clients

Related commands

peer reflect-client

reflect change-path-attribute

reflector cluster-id

reflect change-path-attribute

Use reflect change-path-attribute to enable the route reflector to change the attributes of routes to be reflected.

Use undo reflect change-path-attribute to restore the default.

Syntax

reflect change-path-attribute

undo reflect change-path-attribute

Default

A route reflector cannot change the attributes of routes to be reflected.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

By default, the route reflector does not change the attributes of routes before route reflection to avoid routing loops. When you replan network traffic, you can use this command to allow t he route reflector to change the attributes of the routes to be reflected.

After using the reflect change-path-attribute command, you can use the peer route-policy export command to apply a routing policy that can change the attributes of the routes to be reflected. The following apply commands can define how the routing policy modifies route attributes:

· Use apply origin to change the ORIGIN attribute of routes.

· Use apply ip-address next-hop or apply ipv6 next-hop to change the NEXT_HOP attribute of routes.

· Use apply cost to change the MED attribute of routes.

· Use apply local-preference to change the local preference for routes.

· Use apply community to configure the COMMUNITY attribute of routes. For BGP to advertise the COMMUNITY attribute to a peer or peer group, use the peer advertise-community command.

· Use apply comm-list delete to delete COMMUNITY attribute values from routes.

· Use apply extcommunity to configure the RT extended community attribute of routes. For BGP to advertise the extended community attribute to a peer or peer group, use the peer advertise-ext-community command.

· Use apply extcommunity soo to configure the SoO extended community attribute of routes.

For more information about the apply commands, see routing policy commands in Layer 3—IP Routing Command Reference.

Examples

# In BGP IPv4 unicast address family view, enable the route reflector to change the attributes of routes to be reflected.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] reflect change-path-attribute

Related commands

peer reflect-client

reflect between-clients

reflector cluster-id

Use reflector cluster-id to configure the cluster ID for a route reflector.

Use undo reflector cluster-id to restore the default.

Syntax

reflector cluster-id { cluster-id | ipv4-address }

undo reflector cluster-id

Default

A route reflector uses its router ID as the cluster ID.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP LS address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP EVPN address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP dedicated address family view

Predefined user roles

network-admin

mdc-admin

Parameters

cluster-id: Specifies the cluster ID in the format of an integer, in the range of 1 to 4294967295.

ipv4-address: Specifies the cluster ID in the format of an IPv4 address in dotted decimal notation.

Usage guidelines

The route reflector and clients form a cluster. Typically a cluster has one route reflector. The ID of the route reflector is the cluster ID.

You can configure more than one route reflector in a cluster to improve network reliability and prevent a single point of failure. Use this command to configure the same cluster ID for all route reflectors in the cluster to avoid routing loops.

Do not configure the router ID of a client as the cluster ID.

Examples

# In BGP IPv4 unicast address family view, set the cluster ID on the local router (a reflector in the cluster) to 80.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] reflector cluster-id 80

Related commands

peer reflect-client

reflect between-clients

refresh bgp

Use refresh bgp to manually soft-reset BGP sessions.

Syntax

refresh bgp [ instance instance-name ] { ipv4-address [ mask-length ] | all | external | group group-name | internal } { export | import } ipv4 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ]

refresh bgp [ instance instance-name ] { ipv6-address [ prefix-length ] | [ link-local-address ] interface interface-type interface-number } { export | import } ipv4 [ unicast ] [ vpn-instance vpn-instance-name ]

refresh bgp [ instance instance-name ] { ipv6-address [ prefix-length ] | [ link-local-address ] interface interface-type interface-number | all | external | group group-name | internal } { export | import } ipv6 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ]

refresh bgp [ instance instance-name ] ipv4-address [ mask-length ] { export | import } ipv6 [ unicast ] [ vpn-instance vpn-instance-name ]

refresh bgp [ instance instance-name ] { ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | all | external | group group-name | internal } { export | import } link-state

refresh bgp [ instance instance-name ] { ipv4-address [ mask-length ] | all | external | group group-name | internal } { export | import } vpnv4 [ vpn-instance vpn-instance-name ]

refresh bgp [ instance instance-name ] { ipv4-address [ mask-length ] | all | external | group group-name | internal } { export | import } vpnv6

refresh bgp [ instance instance-name ] { ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | all | external | group group-name | internal } { export | import } l2vpn evpn

refresh bgp [ instance instance-name ] { ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | all | external | group group-name | internal } { export | import } dedicated

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command soft-resets BGP sessions for the default BGP instance.

ipv4-address: Soft-resets the BGP session to a peer specified by its IP address.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command soft-resets BGP sessions to all dynamic peers in the subnet.

ipv6-address: Soft-resets the BGP session to a peer specified by its IPv6 address.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command soft-resets BGP sessions to all dynamic peers in the subnet.

interface-type interface-number: Specifies an interface by its type and number.

all: Soft-resets all BGP sessions.

external: Soft-resets all EBGP sessions.

group group-name: Soft-resets the BGP sessions to the peers of the specified peer group. The group-name argument refers to the name of a peer group, a case-sensitive string of 1 to 47 characters.

internal: Soft-resets all IBGP sessions.

export: Performs outbound soft-reset (filters routes advertised to the specified peer or peer group by using the new configuration).

import: Performs inbound soft-reset (filters routes received from the specified peer or peer group by using the new configuration).

ipv4: Soft-resets BGP sessions for IPv4 address family.

ipv6: Soft-resets BGP sessions for IPv6 address family.

link-state: Soft-resets BGP sessions for LS address family.

multicast: Soft-resets BGP sessions for multicast address family.

unicast: Soft-resets BGP sessions for unicast address family.

vpnv4: Soft-resets BGP sessions for VPNv4 address family.

vpnv6: Soft-resets BGP sessions for VPNv6 address family.

evpn: Soft-resets BGP sessions for EVPN address family.

dedicated: Soft-resets BGP sessions for dedicated address family.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command soft-resets BGP sessions for the specified address family on the public network.

Usage guidelines

A soft-reset operation enables the router to apply a new route selection policy without tearing down BGP connections.

To apply a new policy to outbound BGP sessions, execute this command with the export keyword. The router uses the new policy to filter routing information and sends the routing information that passes the filtering to the BGP peers.

To apply a new policy to inbound sessions, execute this command with the import keyword. The router advertises a route-refresh message to the peer and the peer resends its routing information to the router. After receiving the routing information, the router uses the new policy to filter the routing information.

This command requires that both the local router and the peer support route refresh.

If the peer keep-all-routes command is configured, the refresh bgp import command does not take effect.

By default, the unicast keyword is used if neither the multicast keyword nor the unicast keyword is specified.

Examples

# Soft-reset all inbound BGP sessions for the IPv4 unicast address family.

<Sysname> refresh bgp all import ipv4

Related commands

peer capability-advertise route-refresh

peer keep-all-routes

refresh-time

Use refresh-time to set the RPKI connection check interval.

Use undo refresh-time to restore the default.

Syntax

refresh-time refresh-time

undo refresh-time

Default

The RPKI connection check interval is 600 seconds.

Views

BGP RPKI server view

Predefined user roles

network-admin

mdc-admin

Parameters

refresh-time: Specifies the RPKI connection check interval in the range of 15 to 3600 seconds.

Usage guidelines

After a router establishes a TCP connection with an RPKI server, the router checks the connection at the specified interval. If the router does not receive a response from the RPKI server within the specified time period, it tears down the connection to the RPKI server.

Examples

# Set the RPKI connection check interval to 15 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] rpki

[Sysname-bgp-default-rpki] server tcp 1.1.1.1

[Sysname-bgp-default-rpki-server] refresh-time 15

Related commands

response-time

reset bgp

Use reset bgp to reset BGP sessions for the specified address family.

Syntax

reset bgp [ instance instance-name ] { as-number | ipv4-address [ mask-length ] | all | external | group group-name | internal } ipv4 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ]

reset bgp [ instance instance-name ] { as-number | ipv6-address [ prefix-length ] | [ link-local-address ] interface interface-type interface-number | all | external | group group-name | internal } ipv6 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ]

reset bgp [ instance instance-name ] ipv4-address [ mask-length ] ipv6 [ unicast ] [ vpn-instance vpn-instance-name ]

reset bgp [ instance instance-name ] { ipv6-address [ prefix-length ] | interface interface-type interface-number } ipv4 [ unicast ] [ vpn-instance vpn-instance-name ]

reset bgp [ instance instance-name ] { as-number | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | all | external | group group-name | internal } link-state

reset bgp [ instance instance-name ] { as-number | ipv4-address [ mask-length ] | all | external | group group-name | internal } vpnv4 [ vpn-instance vpn-instance-name ]

reset bgp [ instance instance-name ] { as-number | ipv4-address [ mask-length ] | all | external | group group-name | internal } vpnv6

reset bgp [ instance instance-name ] { as-number | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | all | external | group group-name | internal } l2vpn evpn

reset bgp [ instance instance-name ] { as-number | ipv4-address [ mask-length ] | ipv6-address [ prefix-length ] | all | external | group group-name | internal } dedicated

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command resets BGP sessions for the default BGP instance.

as-number: Resets BGP sessions to peers in the AS specified by its number in the range of 1 to 4294967295.

ipv4-address: Resets the BGP session to a peer specified by its IPv4 address.

mask-length: Specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command resets BGP sessions to all dynamic peers in the subnet.

ipv6-address: Resets the BGP session to a peer specified by its IPv6 address.

prefix-length: Specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command resets BGP sessions to all dynamic peers in the subnet.

interface-type interface-number: Specifies an interface by its type and number.

all: Resets all BGP sessions.

external: Resets all EBGP sessions.

group group-name: Resets the BGP sessions to the peers in the peer group specified by its name, a case-sensitive string of 1 to 47 characters.

internal: Resets all IBGP sessions.

ipv4: Resets BGP sessions for IPv4 address family.

ipv6: Resets BGP sessions for IPv6 address family.

link-state: Resets BGP sessions for LS address family.

multicast: Resets BGP sessions for multicast address family.

unicast: Resets BGP sessions for unicast address family.

vpnv4: Resets BGP sessions for VPNv4 address family.

vpnv6: Resets BGP sessions for VPNv6 address family.

evpn: Resets BGP sessions for EVPN address family.

dedicated: Resets BGP sessions for dedicated address family.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command resets BGP sessions for the specified address family on the public network.

Usage guidelines

CAUTION:

A reset operation tears down BGP sessions for a short period of time.

‌

A reset operation enables the router to apply a new route selection policy by re-establishing BGP sessions.

By default, the unicast keyword is used if the unicast and multicast keywords are not specified.

Examples

# Reset all BGP sessions for the IPv4 unicast address family.

<Sysname> reset bgp all ipv4

reset bgp advertise lowest-priority

Use reset bgp advertise lowest-priority to restore the priority of the routes to be advertised during the time to wait for route priority restoration.

Syntax

reset bgp [ instance instance-name ] advertise lowest-priority { on-peer-up | on-startup }

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command takes effect on the default BGP instance.

on-peer-up: Restores the route priority adjusted by the advertise lowest-priority on-peer-up duration command.

on-startup: Restores the route priority adjusted by the advertise lowest-priority on-startup duration command.

Usage guidelines

Before using this command, make sure the following conditions exist:

· The device has completed ARP or ND table convergence and is ready to advertise routes with original priority.

· The advertise lowest-priority on-peer-up duration or advertise lowest-priority on-startup duration command still takes effect after a peer comes up or the device restarts.

After you use this command, the device immediately sends BGP routes with the original local preference value and MED value to peers.

· If the state of a peer changes from DOWN to UP later, the device still minimizes the priority of the routes advertised to that peer.

· If the device restarts again later, the device still minimizes the priority of the routes advertised to peers.

Examples

# Restore the route priority adjusted by the advertise lowest-priority on-peer-up duration command.

<Sysname> reset bgp advertise lowest-priority on-peer-up

Related commands

advertise lowest-priority on-peer-up duration

advertise lowest-priority on-startup duration

reset bgp all

Use reset bgp all to reset all BGP sessions for all address families.

Syntax

reset bgp [ instance instance-name ] all

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command resets all BGP sessions for all address families of the default BGP instance.

Usage guidelines

CAUTION:

A reset operation tears down BGP sessions for a short period of time.

‌

A reset operation enables the router to apply a new route selection policy by re-establishing BGP sessions.

Examples

# Reset all BGP sessions.

<Sysname> reset bgp all

reset bgp bmp server

Use reset bgp bmp server to r eset the connection to a BMP server and clear statistics information.

Syntax

reset bgp [ instance instance-name ] bmp server { server-number | all }

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command resets the connection to a BMP server and clears statistics information for the default BGP instance.

server-number: Specifies a BMP server by its number in the range of 1 to 8. The BMP server must have been created.

all: Resets the connections to all BMP servers and clears statistics information for the specified BGP instance.

Usage guidelines

When the BMP configuration changes, you can execute this command to reset the connection to the BMP server so that the configuration can take effect immediately.

Executing this command will disconnect the connection to the BMP server and clear statistics information. Use this command with caution.

Examples

# Reset the connection to BMP server 1 in the default BGP instance.

<Sysname> reset bgp bmp server 1

Related commands

display bgp bmp server

reset bgp bmp server statistics

Use reset bgp bmp server statistics to clear BMP server statistics.

Syntax

reset bgp [ instance instance-name ] bmp server server-number statistics

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command clears the BMP server statistics of the default BGP instance.

server-number: Specifies a BMP server by its number in the range of 1 to 8.

Examples

# Clear the statistics of BMP server 1.

<Sysname> reset bgp bmp server 1 statistics

Related commands

display bgp bmp server

reset bgp dampening

Use reset bgp dampening to clear BGP route dampening information and release suppressed BGP routes.

Syntax

reset bgp [ instance instance-name ] dampening ipv4 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ ipv4-address [ mask-length | mask ] ]

reset bgp [ instance instance-name ] dampening ipv6 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ ipv6-address prefix-length ]

reset bgp [ instance instance-name ] dampening vpnv4 [ ipv4-address [ mask | mask-length ] ]

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command clears BGP route dampening information and releases suppressed BGP routes for the default BGP instance.

ipv4: Clears BGP IPv4 route dampening information and releases suppressed BGP IPv4 routes.

ipv6: Clears BGP IPv6 route dampening information and releases suppressed BGP IPv6 routes.

vpnv4: Clears IBGP VPNv4 route dampening information and releases suppressed IBGP VPNv4 routes.

multicast: Clears BGP multicast route dampening information and releases suppressed BGP multicast routes.

unicast: Clears BGP unicast route dampening information and releases suppressed BGP unicast routes.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command clears BGP route dampening information for the public network, and releases suppressed BGP routes.

ipv4-address: Specifies an IPv4 destination network address. If you do not specify a network address, this command clears all BGP route dampening information, and releases all suppressed BGP routes.

mask-length: Specifies a mask length in the range of 0 to 32.

mask: Specifies a network mask in dotted decimal notation.

ipv6-address: Specifies an IPv6 destination network address. If you do not specify a network address, this command clears all BGP route dampening information, and releases all suppressed BGP routes.

prefix-length: Specifies a prefix length in the range of 0 to 128.

Usage guidelines

When you execute the reset bgp dampening ipv4 command:

· If you specify only the ipv4-address argument, the system ANDs the network address with the mask of a BGP IPv4 unicast or multicast route. If the result matches the network address of the route, the command clears dampening information for the route, and releases the suppressed route.

· If you specify the ipv4-address mask or ipv4-address mask-length argument, this command does the following:

¡ Clears dampening information for the BGP IPv4 unicast or multicast route that matches both the specified destination network address and the mask (or mask length).

¡ Releases the suppressed route.

By default, the unicast keyword is used if neither the unicast keyword nor the multicast keyword is specified.

Examples

# Clear dampening information for the BGP IPv4 unicast route to network 20.1.0.0/16 and release the suppressed route.

<Sysname> reset bgp dampening ipv4 20.1.0.0 255.255.0.0

Related commands

dampening

dampening ibgp (MPLS Command Reference)

display bgp routing-table dampened

reset bgp flap-info

Use reset bgp flap-info to clear flap statistics for BGP routes.

Syntax

reset bgp [ instance instance-name ] flap-info ipv4 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ ipv4-address [ mask-length | mask ] | as-path-acl { as-path-acl-number | as-path-acl-name } | peer ipv4-address [ mask-length ] ]

reset bgp [ instance instance-name ] flap-info ipv6 [ multicast | [ unicast ] [ vpn-instance vpn-instance-name ] ] [ ipv6-address prefix-length | as-path-acl { as-path-acl-number | as-path-acl-name } | peer ipv6-address [ prefix-length ] ]

reset bgp [ instance instance-name ] flap-info vpnv4 [ ipv4-address [ mask | mask-length ] | as-path-acl { as-path-acl-number | as-path-acl-name } | peer [ ipv4-address [ mask-length ] ]

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command clears flap statistics for the default BGP instance.

ipv4: Clears flap statistics for BGP IPv4 routes.

ipv6: Clears flap statistics for BGP IPv6 routes.

vpnv4: Clears flap statistics for IBGP VPNv4 routes.

multicast: Clears flap statistics for BGP multicast routes.

unicast: Clears flap statistics for BGP unicast routes.

ipv4-address: Specifies an IPv4 destination network address.

mask-length: Specifies a mask length in the range of 0 to 32.

mask: Specifies a network mask in dotted decimal notation.

ipv6-address: Specifies an IPv6 destination network address.

prefix-length: Specifies a prefix length in the range of 0 to 128.

as-path-acl as-path-acl-number: Specifies an AS path list by its number in the range of 1 to 256, to filter BGP route flap statistics.

as-path-acl as-path-acl-name: Specifies an AS path list by its name, a case-sensitive string of 1 to 51 characters. The AS path list name cannot contain only digits.

peer ipv4-address [ mask-length ]: Clears flap statistics for BGP routes learned from the specified IPv4 BGP peer. The mask-length argument specifies a mask length in the range of 0 to 32. You can use the ipv4-address and mask-length arguments together to specify a subnet. If you specify a subnet, this command clears flap statistics for BGP routes learned from all dynamic peers in the subnet.

peer ipv6-address [ prefix-length ]: Clears flap statistics for BGP routes learned from the specified IPv6 BGP peer. The prefix-length argument specifies a prefix length in the range of 0 to 128. You can use the ipv6-address and prefix-length arguments together to specify a subnet. If you specify a subnet, this command clears flap statistics for BGP routes learned from all dynamic peers in the subnet.

Usage guidelines

When you execute the reset bgp flap-info ipv4 command:

· If you specify only the ipv4-address argument, the system ANDs the IPv4 network address with the mask of a BGP IPv4 unicast or multicast route. If the result matches the IPv4 network address of the route, this command clears the flap statistics of the route.

· If you specify the ipv4-address mask or ipv4-address mask-length argument, this command clears the flap statistics of the BGP IPv4 unicast or multicast route that matches both the specified IPv4 destination network address and the mask (or mask length).

By default, the unicast keyword is used if neither the unicast keyword nor the multicast keyword is specified.

Examples

# Clear flap statistics for the BGP IPv4 unicast route to network 20.1.0.0/16.

<Sysname> reset bgp flap-info ipv4 20.1.0.0 16

Related commands

dampening

dampening ibgp (MPLS Command Reference)

display bgp routing-table flap-info

reset bgp rpki server

Use reset bgp rpki server to reset BGP RPKI sessions.

Syntax

reset bgp [ instance instance-name ] rpki server [ vpn-instance vpn-instance-name ] tcp { ipv4 address | ipv6 address }

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command resets BGP RPKI sessions for the default BGP instance.

vpn-instance vpn-instance-name: Resets BGP RPKI sessions for the MPLS L3VPN instance specified by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command resets BGP RPKI sessions for the public network.

ipv4-address: Specifies an RPKI server by its IPv4 address.

ipv6-address: Specifies an RPKI server by its IPv6 address.

Usage guidelines

After you execute this command, the device will delete and re-establish the specified BGP RPKI session and cause temporary session interruption.

Examples

# Reset the BGP RPKI session to RPKI server 2.2.2.1.

<Sysname> reset bgp rpki server tcp 2.2.2.1

response-time

Use response-time to set the time to wait for the response from the RPKI server.

Use undo response-time to restore the default.

Syntax

response-time response-time

undo response-time

Default

The time to wait for the response from the RPKI server is 30 seconds.

Views

BGP RPKI server view

Predefined user roles

network-admin

mdc-admin

Parameters

response-time: Specifies the time to wait for the response from the RPKI server, in the range of 15 to 3600 seconds.

Usage guidelines

A router checks the connection to an RPKI server at the check interval. If the router does not receive a response from the RPKI server within the specified time period, it tears down the connection to the RPKI server.

Examples

# Set the time to wait for the response from RPKI server 1.1.1.1 to 15 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] rpki

[Sysname-bgp-default-rpki] server tcp 1.1.1.1

[Sysname-bgp-default-rpki-server] response-time 15

Related commands

refresh-time

retain local-label

Use retain local-label to set an update delay for local MPLS labels.

Use undo retain local-label to restore the default.

Syntax

retain local-label retain-time

undo retain local-label

Default

The update delay is 60 seconds.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

retain-time: Specifies the update delay in the range of 1 to 21845 seconds.

Usage guidelines

BGP includes local MPLS labels in advertised VPNv4 routes, VPNv6 routes, labeled IPv4 unicast routes, and labeled IPv6 unicast routes.

When a local label is changed, BGP removes the old label and advertises the new label. Traffic interruption occurs if BGP peers use the old label to forward packets before they learn the new label. To resolve this issue, configure an update delay for local MPLS labels. BGP does not remove the old label before the update delay timer expires.

Examples

# Set the update delay for local MPLS labels to 100 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] retain local-label 100

route-mode adj-rib-in

Use route-mode adj-rib-in to enable BGP to send routes received from all the monitored peers and peer groups to the BMP server.

Use undo route-mode adj-rib-in to restore the default.

Syntax

route-mode adj-rib-in [ pre-policy | post-policy | both ]

undo route-mode adj-rib-in

Default

BGP sends routes received from all the monitored peers and peer groups to the BMP server without route filtering.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Parameters

pre-policy: Sends routes to the BMP server without route filtering.

post-policy: Sends routes to the BMP server after route filtering.

both: Sends both filtered and unfiltered routes to the BMP server.

Usage guidelines

To enable BGP to send routes received from all monitored peers and peer groups to the BMP server, make sure BGP has established a TCP connection to the BMP server.

If you do not specify any parameters, the command sends routes received from all the monitored peers and peer groups to the BMP server without route filtering.

The configuration of the route-mode adj-rib-in command takes effect on all peers and peer groups. The configuration of the peer route-mode command in BGP instance view or BGP-VPN instance view takes effect only on the specified peer or peer group. The configuration of the peer route-mode command takes precedence over the configuration of the route-mode adj-rib-in command.

If you execute this command multiple times for the same BMP server, the most recent configuration takes effect.

Examples

# Enable BGP to send routes received from all the monitored peers and peer groups to the BMP server after route filtering.

<Sysname> system-view

[Sysname] bmp server 5

[Sysname-bmpserver-5] route-mode adj-rib-in post-policy

route-mode adj-rib-out

Use route-mode adj-rib-out to configure BGP to send routes advertised to the monitored peer or peer group to the BMP server.

Use undo route-mode adj-rib-out to restore the default.

Syntax

route-mode adj-rib-out [ pre-policy | post-policy | both ]

undo route-mode adj-rib-out

Default

BGP does not send routes advertised to the monitored peer or peer group to the BMP server.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Parameters

pre-policy: Sends routes to the BMP server without route filtering.

post-policy: Sends routes to the BMP server after route filtering.

both: Sends both filtered and unfiltered routes to the BMP server.

Usage guidelines

To configure BGP to send routes advertised to the monitored peer or peer group to the BMP server, make sure BGP has established a TCP connection to the BMP server.

If you do not specify any parameters, the command sends routes advertised to all the monitored peers and peer groups to the BMP server without route filtering.

The configuration of the route-mode adj-rib-out command takes effect on all peers and peer groups. The configuration of the peer route-mode command in BGP instance view or BGP-VPN instance view takes effect only on the specified peer or peer group. The configuration of the peer route-mode command takes precedence over the configuration of the route-mode adj-rib-out command.

If you execute this command multiple times for the same BMP server, the most recent configuration takes effect.

Examples

# Configure BGP to send routes advertised to the monitored peer or peer group to the BMP server.

<Sysname> system-view

[Sysname] bmp server 5

[Sysname-bmpserver-5] route-mode adj-rib-out

Related commands

peer route-mode

route-mode loc-rib

Use route-mode loc-rib to configure BGP to send the optimal routes in the routing table to the BMP server.

Use undo route-mode loc-rib to restore the default.

Syntax

route-mode loc-rib

undo route-mode loc-rib

Default

BGP does not send the optimal routes in the routing table to the BMP server.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Before executing this command, make sure BGP has established a TCP connection to the BMP server.

With this command configured, BGP sends all routes to the BMP server first. If routes update later, BGP sends only the optimal routes to the server.

This command takes effect only on BGP IPv4 unicast and BGP-VPN IPv4 unicast routes.

Examples

# Configure BGP to send the optimal routes in the routing table to the BMP server.

<Sysname> system-view

[Sysname] bmp server 5

[Sysname-bmpserver-5] route-mode loc-rib

router id

Use router id to configure a global router ID.

Use undo router id to restore the default.

Syntax

router id router-id

undo router id

Default

No global router ID is configured.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

router-id: Specifies a router ID in IP address format.

Usage guidelines

Some routing protocols use a router ID to identify a device. You can configure a global router ID, which is used by routing protocols that have no router ID configured.

If no global router ID is configured, the highest loopback address, if any, is used as the router ID. If no loopback address is available, the highest physical interface IP address is used, regardless of the interface status. If no IP address is configured for any interface, the router ID is 0.0.0.0. BGP cannot use router ID 0.0.0.0 for peer session establishment, because the router ID is invalid.

During an active/standby switchover, the standby main processing unit (MPU) checks the validity of the previous router ID backed up before switchover. If it is not valid, it selects a new router ID.

If the interface IP address that is selected as the router ID is removed or modified, a new router ID is selected. The following events will not trigger a router ID re-selection:

· The interface goes down.

· After a physical interface address is selected as the router ID, an IP address is configured for a loopback interface.

· A higher interface IP address is configured.

After you modify the global router ID and reset BGP sessions, the modification does not take effect for a BGP instance that uses the global router ID. To modify the router ID for the BGP instance, use the router-id command in BGP instance view.

Examples

# Configure a global router ID as 1.1.1.1.

<Sysname> system-view

[Sysname] router id 1.1.1.1

Related commands

router-id (BGP instance view)

router-id (BGP-VPN instance view)

route-rate-limit

Use route-rate-limit to set the BGP route sending rate.

Use undo route-rate-limit to restore the default.

Syntax

route-rate-limit rate

undo route-rate-limit

Default

The BGP route sending rate is not limited.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

rate: Specifies the number of new routes that BGP can send per second, in the range of 0 to 4294967295. A value of 0 means that BGP does not send newly added routes.

Usage guidelines

If a device sends many new routes within a short time period, it might be unable to add the routes to the FIB before the peer device adds them. This might result in traffic forwarding failure. To avoid this problem, you can configure this command to set an appropriate route sending rate for the device. For a device with high performance, you can set a high BGP route sending rate as needed. For a device without high performance, set a relatively low BGP route sending rate as a best practice.

As a best practice to avoid route withdrawal failures, do not set the BGP route sending rate to 0 or a small value when network flapping occurs.

This command applies only to IPv4 unicast routes and IPv6 unicast routes.

Examples

# In BGP instance view, set the BGP route sending rate to 1000.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] route-rate-limit 1000

router-id (BGP instance view)

Use router-id to configure a router ID for a BGP instance.

Use undo router-id to restore the default.

Syntax

router-id router-id

undo router-id

Default

No router ID is configured for a BGP instance, and the BGP instance uses the global router ID configured by the router id command in system view.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

router-id: Specifies a router ID for BGP, in IP address format.

Usage guidelines

To run BGP, a BGP instance must have a router ID, which is an unsigned 32-bit integer that uniquely identifies the router in the AS.

To modify a non-zero router ID for BGP, execute the router-id command in BGP instance view.

To improve availability, specify the IP address of a loopback interface as the router ID for BGP.

If you execute this command in the same BGP instance view multiple times, the most recent configuration takes effect.

You can configure the same router ID for different BGP instances.

Examples

# In BGP instance view, set the router ID for BGP to 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] router-id 1.1.1.1

Related commands

router id

router-id (BGP-VPN instance view)

Use router-id to configure a router ID for a BGP VPN instance.

Use undo router-id to restore the default.

Syntax

router-id { router-id | auto-select }

undo router-id

Default

No router ID is configured for a BGP VPN instance, and the BGP VPN instance uses the router ID configured in BGP instance view. If no router ID is configured in BGP instance view, the BGP VPN instance uses the global router ID configured in system view.

Views

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

router-id: Specifies a router ID in IP address format.

auto-select: Automatically selects a router ID for the BGP VPN instance.

Usage guidelines

To run BGP, a VPN instance of a BGP instance must have a router ID, which is an unsigned 32-bit integer that uniquely identifies the BGP VPN router in the AS.

If the auto-select keyword is specified, the system selects a router ID for the BGP VPN instance in the following order:

1. The highest loopback address in the BGP VPN instance as the router ID.

2. The highest physical interface address in the BGP VPN instance as the router ID, regardless of the interface status.

3. 0.0.0.0 as the router ID. BGP cannot use router ID 0.0.0.0 for peer session establishment, because the router ID is invalid.

If a non-zero router ID is selected for the BGP VPN instance, the router ID will not change when a more preferable router ID is available in the BGP VPN instance.

To improve availability, specify the IP address of a loopback interface as the router ID.

You can specify a different router ID for each VPN instance on a device.

If you execute this command in the same BGP-VPN instance view multiple times, the most recent configuration takes effect.

Examples

# In BGP-VPN instance view, set the router ID to 1.1.1.1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] ip vpn-instance vpn1

[Sysname-bgp-default-vpn1] router-id 1.1.1.1

Related commands

router id

router-id (BGP instance view)

route-select delay

Use route-select delay to configure optimal route selection delay.

Use undo route-select delay to restore the default.

Syntax

route-select delay delay-value

undo route-select delay

Default

The optimal route selection delay timer is 0 seconds, which means optimal route selection is not delayed.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

BGP VPNv4 address family view

BGP VPNv6 address family view

BGP EVPN address family view

BGP LS address family view

Predefined user roles

network-admin

mdc-admin

Parameters

delay-value: Specifies the optimal route selection delay timer in the range of 0 to 600 seconds. A value of 0 means optimal route selection is not delayed.

Usage guidelines

To avoid packet loss caused by path switchover, configure this command to delay optimal route selection upon a route change.

Follow these restrictions and guidelines when you configure the command:

· The optimal route selection delay setting applies only when multiple effective routes with the same prefix exist after a route change occurs.

· For routes being delayed for optimal route selection, modifying the optimal route selection delay timer has the following effects:

¡ If you modify the delay timer to a non-zero value, the routes are not affected, and they still use the original delay timer.

¡ If you execute the undo form of the command or modify the delay timer to 0, the device performs optimal route selection immediately.

· If you execute the command multiple times for an address family, the most recent configuration takes effect.

· The optimal route selection delay configuration does not apply to the following conditions:

¡ A route change is caused by execution of a command or by route withdrawal.

¡ After a route change occurs, only one route exists for a specific destination network.

¡ An active/standby process switchover occurs.

¡ A route change occurs among equal-cost routes.

¡ Only the optimal and suboptimal routes exist when FRR is configured.

¡ Optimal route selection is triggered by a redistributed route.

Examples

# In BGP IPv4 unicast address family view, set the optimal route selection delay timer to 100 seconds.

<Sysname> system-view

[Sysname] bgp 65009

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] route-select delay 100

route-update-delay

Use route-update-delay to enable BGP route advertisement delay and set a delay timer.

Use undo route-update-delay to restore the default.

Syntax

route-update-delay delay-value

undo route-update-delay

Default

BGP route advertisement delay is disabled.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

delay-value: Specifies the BGP route advertisement delay timer in the range of 1 to 600 seconds.

Usage guidelines

BGP sends update messages to peers when route changes occur or peer relationship establishment is complete. If a large number of routes need to be updated within a short time period, BGP might send update messages to peers before issuing the updated routes to the FIB. As a result, some packets might be discarded because BGP cannot find the forwarding path for the packets.

To resolve this issue, execute this command to enable BGP route advertisement delay and set a delay timer. When route changes occur or peer relationship establishment is complete, BGP cannot send any update messages unless the delay timer expires.

In the current software version, this command is applicable only to BGP VPNv4 routes, BGP VPNv6 routes, BGP IPv4 unicast routes, and BGP IPv6 unicast routes.

BGP compares the timer values specified for a BGP peer by using the route-update-delay command and the peer route-update-interval command. Only the larger timer value takes effect. If the peer route-update-interval command is not executed, BGP compares the default value of this command with the delay timer configured by the route-update-interval command.

If you execute this command multiple times, the most recent configuration takes effect.

Examples

# Set the BGP route advertisement delay timer to 60 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] route-update-delay 60

Related commands

peer route-update-interval

route-update-interval withdrawn enable

Use route-update-interval withdrawn enable to apply route update interval setting to withdrawn routes.

Use undo route-update-interval withdrawn enable to restore the default.

Syntax

route-update-interval withdrawn enable

undo route-update-interval withdrawn enable

Default

Route update interval setting does not apply to withdrawn routes. BGP sends withdrawal messages for withdrawn routes immediately.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command does not take effect on routes that exist before the command is configured.

By default, for a route to be withdrawn, a BGP router immediately sends a withdrawal message to its peers. If the route changes frequently, the BGP router sends many updates for the route, resulting in routing flaps. To avoid this issue, use this command to apply the route update interval configured in the peer route-update-interval command to withdrawn routes. BGP will send withdrawn and update messages at the specified intervals.

Examples

# In BGP instance view, apply route update interval setting to withdrawn routes.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] route-update-interval withdrawn enable

Related commands

peer route-update-interval

routing-table bgp-rib-only

Use routing-table bgp-rib-only to enable BGP to not flush routes matching the specified routing policy to the routing table.

Use undo routing-table bgp-rib-only to restore the default.

Syntax

routing-table bgp-rib-only [ all ] [ route-policy route-policy-name ]

undo routing-table bgp-rib-only

Default

BGP flushes the optimal routes to the routing table.

Views

BGP IPv4 unicast address family view

BGP IPv6 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP-VPN IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

all: Disables BGP from flushing all routes to the routing table, including redistributed routes and routes received from peers and peer groups. If you do not specify this keyword, , only the routes received from the specified peer or peer group cannot be flushed to the routing table and BGP still flushes redistributed routes to the routing table.

route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters. If you do not specify a routing policy or the specified routing policy does not exist, BGP does not filter the routes that cannot be flushed to the routing table. The apply clauses in the specified routing policy do not take effect.

Usage guidelines

This command applies to the following scenarios:

· In an MPLS L3VPN network, all the optimal private BGP routes will be flushed to the routing table of a PE by default. You can execute this command to prevent unnecessary routes from being flushed to the IP routing table and improve the forwarding performance of the PE.

· In a route reflection network, execute this command to not flush specific BGP routes to the routing table of the RR. Then, the RR only advertises and receives routes but does not forward service traffic, which saves the system resources of the RR.

This command is mutually exclusive with the advertise-rib-active command.

Examples

# In BGP IPv4 unicast address family view, enable BGP to not flush BGP IPv4 unicast routes matching routing policy policy1 to the routing table.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] routing-table bgp-rib-only route-policy policy1

rpki

Use rpki to enter BGP RPKI view.

Use undo rpki to remove all configurations in BGP RPKI view.

Syntax

rpki

undo rpki

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Examples

# Enter BGP RPKI view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] rpki

[Sysname-bgp-default-rpki]

server

Use server to configure an IP address and port number for a BMP server.

Use undo server to remove the configuration.

Syntax

server address { ipv4-address | ipv6-address } port port-number

undo server

Default

No IP address and port number are configured for the BMP server.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-address: Specifies an IPv4 address for the BMP server.

ipv6-address: Specifies an IPv6 address for the BMP server.

port-number: Specifies a port number for the BMP server, in the range of 1 to 65535.

Usage guidelines

After you configure an IP address and port number for a BMP server, the BMP client establishes a TCP connection to the BMP server and sends BMP messages to the BMP server.

Examples

# Configure IP address 100.1.1.1 and port number 8888 for BMP server 5.

<Sysname> system-view

[Sysname] bmp server 5

[Sysname-bmpserver-5] server address 100.1.1.1 port 8888

server connect-interface

Use server connect-interface to specify the source interface of TCP connections to the BMP server.

Use undo server connect-interface to restore the default.

Syntax

server connect-interface interface-type interface-number

undo server connect-interface

Default

BGP uses the primary IPv4 address of the output interface in the optimal route to the BMP server as the source address of TCP connections to the BMP server.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Parameters

interface-type interface-number: Specifies an interface by its type and number.

Usage guidelines

After you configure this command, BGP uses the address of the specified interface to establish TCP connections to the BMP server.

This command does not take effect if the specified interface's VPN instance is different from that configured in the server vpn-instance command for the same server.

Do not specify a virtual template (VT) interface for this command.

Examples

# Configure Loopback 0 as the source interface of TCP connections to BMP server 5.

<Sysname> system-view

[Sysname] bmp server 5

[Sysname-bmpserver-5] server address 100.1.1.1 port 8888

[Sysname-bmpserver-5] server connect-interface loopback0

Related commands

display bgp bmp server

ip binding vpn-instance (system view) (MPLS Command Reference)

server vpn-instance

server password

Use server password to specify the authentication mode and key for BGP to establish TCP connections to the BMP server.

Use undo server password to restore the default.

Syntax

server password { keychain keychain-name | md5 { cipher | simple } string }

undo server password

Default

BGP establishes TCP connections to the BMP server without authentication.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Parameters

keychain: Specifies keychain authentication.

keychain-name: Specifies a keychain by its name, a case-sensitive string of 1 to 63 characters. The keychain must have been created.

md5: Specifies MD5 authentication.

cipher: Specifies a password in encrypted form.

simple: Specifies a password in plaintext form. For security purposes, the password specified in plaintext form will be stored in encrypted form.

password: Specifies the password. Its encrypted form is a case-sensitive string of 33 to 137 characters. Its plaintext form is a case-sensitive string of 1 to 80 characters.

Usage guidelines

Configure this command to secure the TCP connections and packets exchanged with the BMP server.

You cannot repeat the server password command to edit the authentication mode and key. To edit the authentication mode and key, first execute the undo server password command and then the server password command to configure a new authentication mode and key.

Examples

# In BMP server view, use keychain abc to authenticate the TCP connections to the BMP server.

<Sysname> system-view

[Sysname] bmp server 5

[Sysname-bmpserver-5] server password keychain abc

server source-address

Use server source-address to specify the source address of TCP connections to the BMP server.

Use undo server source-address to restore the default.

Syntax

server source-address { ipv4-address | ipv6-address }

undo server source-address

Default

BGP uses the primary IPv4 or IPv6 address of the output interface in the optimal route to the BMP server as the source address of TCP connections to the BMP server.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Parameters

ipv4-address: Specifies the source IPv4 address of TCP connections to the BMP server.

ipv6-address: Specifies the source IPv6 address of TCP connections to the BMP server.

Usage guidelines

For a BMP server, the following rules apply:

· The configuration of the server source-address command does not take effect if the server source-address and server commands specify different types of IP addresses.

· If you execute both the server source-address and server connect-interface commands, the server source-address command takes effect.

Examples

# Configure 1.1.1.1 as the source address of TCP connections to BMP server 5.

<Sysname> system-view

[Sysname] bmp server 5

[Sysname-bmpserver-5] server address 100.1.1.1 port 8888

[Sysname-bmpserver-5] server source-address 1.1.1.1

Related commands

display bgp bmp server

server connect-interface

server tcp

Use server tcp to specify an RPKI server and enter BGP RPKI server view.

Use undo server tcp to cancel the configuration.

Syntax

server [ vpn-instance vpn-instance-name ] tcp { ipv4-address | ipv6-address }

undo server [ vpn-instance vpn-instance-name ] tcp { ipv4-address | ipv6-address }

Default

No RPKI server is specified.

Views

BGP RPKI view

Predefined user roles

network-admin

mdc-admin

Parameters

vpn-instance vpn-instance-name: Specifies the MPLS L3VPN instance to which the RPKI server belongs by its name, a case-sensitive string of 1 to 31 characters. If the RPKI server is in the public network, do not specify this option.

ipv4-address: Specifies an RPKI server by its IPv4 address.

ipv6-address: Specifies an RPKI server by its IPv6 address.

Usage guidelines

You can execute this command multiple times to configure a router to establish TCP connections to multiple RPKI servers.

After you execute the undo server command, all configurations in BGP RPKI server view are deleted.

Examples

# Specify an RPKI server with the IP address 1.1.1.1 and enter BGP RPKI server view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] rpki

[Sysname-bgp-default-rpki] server tcp 1.1.1.1

[Sysname-bgp-default-rpki-server]

server vpn-instance

Use server vpn-instance to specify a VPN instance for a BMP server.

Use undo server vpn-instance to restore the default.

Syntax

server vpn-instance vpn-instance-name

undo server vpn-instance

Default

No VPN instance is specified for the BMP server. The BMP server belongs to the public network.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Parameters

vpn-instance-name: Specifies the MPLS L3VPN instance to which the BMP server belongs by its name, a case-sensitive string of 1 to 31 characters. The specified VPN instance must have been created.

Usage guidelines

Deleting the specified VPN instance terminates the connection to the BMP server, but does not remove your configuration. After you create the VPN instance again, the connection to the BMP server is automatically reestablished.

If you execute this command multiple times, the most recent configuration takes effect.

Examples

# Assign BMP server 5 with IP address 100.1.1.1 and port number 8888 to VPN instance vpna.

<Sysname> system-view

[Sysname] bmp server 5

[Sysname-bmpserver-5] server address 100.1.1.1 port 8888

[Sysname-bmpserver-5] server vpn-instance vpna

Related commands

display bgp bmp server

server connect-interface

shutdown process

Use shutdown process to shut down BGP sessions to all peers and peer groups.

Use undo shutdown process to restore the default.

Syntax

shutdown process

undo shutdown process

Default

BGP does not shut down sessions to any peers or peer groups.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

For maintenance purposes, you can execute this command to temporarily disconnect BGP sessions from all peers and peer groups on the device. After maintenance, you can restore the sessions by simply executing the undo form of the command without reconfiguring peer or peer group settings.

This command enables the device to tear down all sessions and clear all routing information.

The device cannot establish BGP sessions in one of the following conditions:

· The shutdown process command is executed.

· The peer ignore or ignore all-peers command is executed.

Examples

# Shut down BGP sessions to all peers and peer groups for BGP instance 100.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] shutdown process

snmp context-name

Use snmp context-name to configure an SNMP context for a BGP instance.

Use undo snmp context-name to restore the default.

Syntax

snmp context-name context-name

undo snmp context-name

Default

No SNMP context is configured for a BGP instance.

Views

BGP instance view

Predefined user roles

network-admin

mdc-admin

Parameters

context-name: Specifies an SNMP context by its name, a case-sensitive string of 1 to 32 characters.

Usage guidelines

BGP does not know the BGP instance to which a managed MIB node belongs. To resolve this issue, configure different SNMP contexts for different BGP instances.

The device selects a MIB for an SNMP packet according to the context (for SNMPv3) or community name (for SNMPv1/v2c) in the following ways:

· For an SNMPv3 packet:

¡ The device selects the MIB of the BGP instance default if the packet does not carry a context and no SNMP context was configured for the BGP instance default.

¡ The device selects the MIB of a BGP instance if the packet meets the following conditions:

- Carries a context that was configured with the snmp-agent context command in system view.

- Matches the context of the BGP instance.

¡ The device does not process any MIBs in other situations.

· For an SNMPv1/v2c packet:

¡ The device selects the MIB of the BGP instance default if the following conditions are met:

- No SNMP community to SNMP context mapping was configured with the snmp-agent community-map command in system view.

- No SNMP context was configured for the BGP instance default.

¡ The device selects the MIB of a BGP instance if the SNMP community is mapped to an SNMP context and the context matches the context of the BGP instance.

¡ The device does not process any MIBs in other situations.

For more information about SNMP contexts and community names, see Network Management and Monitoring Configuration Guide.

Do not configure the same SNMP context for different BGP instances.

If you execute this command multiple times, the most recent configuration takes effect.

Examples

# Configure SNMP context bgp-abc for BGP instance abc.

<Sysname> system-view

[Sysname] bgp 100 instance abc

[Sysname-bgp-abc] snmp context-name bgp-abc

Related commands

snmp-agent community-map (Network Management and Monitoring Command Reference)

snmp-agent context (Network Management and Monitoring Command Reference)

snmp-agent trap enable bgp

Use snmp-agent trap enable bgp to enable SNMP notifications for BGP.

Use undo snmp-agent trap enable bgp to disable SNMP notifications for BGP.

Syntax

Default

SNMP notifications for BGP are enabled.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

instance instance-name: Specifies a BGP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command enables SNMP notifications for the default BGP instance.

peer-addrfamily-routeexceed: Enables BGP to generate notifications when the number of routes received for an address family reaches the upper limit.

peer-addrfamily-routeexceed-clear: Enables BGP to generate notifications when the number of routes received for an address family falls below the upper limit.

peer-addrfamily-routethreshold-clear: Enables BGP to generate notifications when the number of routes received for an address family falls below the alarm threshold.

peer-addrfamily-routethreshold-exceed: Enables BGP to generate notifications when the number of routes received for an address family reaches the alarm threshold.

peer-backward-transition: Enables BGP to generate notifications when the state of a BGP session changes from Established to another state.

peer-established: Enables BGP to generate notifications when a BGP session enters the Established state.

peer-routeexceed: Enables BGP to generate notifications when the number of routes received for all address families reaches the upper limit.

peer-routeexceed-clear: Enables BGP to generate notifications when the number of routes received for all address families falls below the upper limit.

peer-routethreshold-clear: Enables BGP to generate notifications when the number of routes received for all address families falls below the alarm threshold.

peer-routethreshold-exceed: Enables BGP to generate notifications when the number of routes received for all address families reaches the alarm threshold.

Usage guidelines

After you enable SNMP notifications for BGP, the device generates a notification when a BGP session state change occurs. The notification includes the neighbor address, the error code and subcode of the most recent error, and the current neighbor state.

For BGP notifications to be sent correctly, you must also configure SNMP on the device. For more information about SNMP configuration, see the network management and monitoring configuration guide for the device.

Whether notifications specified by the peer-addrfamily-routeexceed, peer-addrfamily-routeexceed-clear, peer-addrfamily-routethreshold-exceed, peer-addrfamily-routethreshold-clear, peer-routeexceed, peer-routeexceed-clear, peer-routethreshold-clear, and peer-routethreshold-exceed keywords can be generated is determined by the configuration of the peer route-limit command. The peer route-limit command determines the number of routes that the router can receive and the log generation threshold. If the peer route-limit command is not executed, the maximum number of routes that triggers notifications is 4294967295 and the route quantity alarm threshold is 70%.

If you do not specify any keywords when executing this command, the configuration applies to all types of notifications. If you execute this command with specific keywords, the configuration applies to only the specified types of notifications.

Examples

# Enable SNMP notifications for BGP.

<Sysname> system-view

[Sysname] snmp-agent trap enable bgp

statistics-interval

Use statistics-interval to set the interval at which BGP sends statistics information to the BMP server.

Use undo statistics-interval to restore the default.

Syntax

statistics-interval value

undo statistics-interval

Default

BGP does not send statistics information to the BMP server.

Views

BMP server view

Predefined user roles

network-admin

mdc-admin

Parameters

value: Specifies the interval at which BGP sends statistics information to the BMP server, in the range of 1 to 3600 seconds.

Usage guidelines

After establishing a TCP connection to the BMP server, BGP sends statistics information to the BMP server at the specified interval.

Examples

# Set the interval to 5 seconds at which BGP sends statistics information to the BMP server.

<Sysname> system-view

[Sysname] bmp server 5

[Sysname-bmpserver-5] statistics-interval 5

summary automatic

Use summary automatic to configure automatic route summarization for redistributed IGP subnet routes.

Use undo summary automatic to restore the default.

Syntax

summary automatic

undo summary automatic

Default

Automatic route summarization is not performed for redistributed IGP subnet routes.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP IPv4 multicast address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

After the summary automatic command is configured, BGP summarizes IGP subnets redistributed by the import-route command.

Automatic summary routes can be manually summarized, but cannot be added to the IP routing table.

Examples

# In BGP IPv4 unicast address family view, configure automatic route summarization for redistributed IGP subnet routes.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] summary automatic

Related commands

aggregate

import-route

timer

Use timer to configure a BGP keepalive interval and hold time.

Use undo timer to restore the default.

Syntax

timer keepalive keepalive hold holdtime

undo timer

Default

The BGP keepalive interval and the hold time are 60 seconds and 180 seconds, respectively.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

keepalive keepalive: Configures a keepalive interval in the range of 0 to 21845 seconds.

hold holdtime: Configures a hold time in seconds, whose value is 0 or in the range of 3 to 65535. The hold time must be at least three times the keepalive interval.

Usage guidelines

After establishing a BGP session, two routers send keepalive messages at the specified keepalive interval to each other to keep the session.

If a router receives no keepalive or update message from the peer within the hold time, it tears down the session.

Use the timer command to configure the keepalive interval and hold time for all BGP peers. Use the peer timer command to configure the keepalive interval and hold time for a peer or peer group. If both commands are configured, the intervals configured by the peer timer command have higher priority.

If the hold time settings on the local and peer routers are different, the smaller one is used.

The timer command affects only new BGP sessions.

After the timer command is executed, no peer session is closed at once. The configured hold time is used for negotiation in session re-establishment (for example, when you reset the BGP session).

Examples

# In BGP instance view, set the keepalive interval and hold time to 60 seconds and 180 seconds, respectively.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] timer keepalive 60 hold 180

Related commands

display bgp peer

peer timer

timer connect-retry

Use timer connect-retry to set the session retry timer for all peers and peer groups.

Use undo timer connect-retry to restore the default.

Syntax

timer connect-retry retry-time

undo timer connect-retry

Default

The session retry timer is 32 seconds for all peers and peer groups.

Views

BGP instance view

BGP-VPN instance view

Predefined user roles

network-admin

mdc-admin

Parameters

retry-time: Specifies a session retry timer in the range of 1 to 65535 seconds.

Usage guidelines

The timer set by the peer timer connect-retry command takes precedence over the timer set by the timer connect-retry command.

Examples

# In BGP instance view, set the session retry timer to 30 seconds for all peers.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] timer connect-retry 30

Related commands

peer timer connect-retry

update-first route-policy

Use update-first route-policy to configure BGP to send withdrawal messages of routes matching the specified routing policy prior to other routes.

Use undo update-first route-policy to restore the default.

Syntax

update-first route-policy route-policy-name

undo update-first route-policy

Default

BGP does not send withdrawal messages of any routes prior to other routes.

Views

BGP IPv4 unicast address family view

BGP-VPN IPv4 unicast address family view

BGP VPNv4 address family view

BGP IPv6 unicast address family view

BGP-VPN IPv6 unicast address family view

BGP VPNv6 address family view

BGP IPv4 multicast address family view

BGP IPv6 multicast address family view

Predefined user roles

network-admin

mdc-admin

Parameters

route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters.

Usage guidelines

This command enables BGP to send the withdrawal messages of specific routes prior to other routes. This can achieve fast route switchover and reduce the traffic interruption time.

Examples

# In BGP IPv4 unicast address family view, configure BGP to send withdrawal messages of routes matching routing policy test-policy prior to other routes

<Sysname> system-view

[Sysname] bgp 1

[Sysname-bgp-default] address-family ipv4

[Sysname-bgp-default-ipv4] update-first route-policy test-policy

Related commands

default-route update-first

route-policy

user-move fast-update

Use user-move fast-update to enable fast host route update upon user migration.

Use undo user-move fast-update to disable fast host route update upon user migration.

Syntax

user-move fast-update

undo user-move fast-update

Default

Fast host route update upon user migration is disabled.

Views

BGP IPv4 unicast address family view

BGP IPv6 unicast address family view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

An access device does not detect the online state of a client actively or update the host route entries in real time. Traffic forwarding might be affected when a client roams between access devices. To resolve this issue, execute this command to enable fast host route update upon user migration.

Executing this command also enables BGP to advertise the extended community attribute to all peers and peer groups.

Examples

# In BGP IPv4 unicast address family view, enable fast host route update upon user migration.

<Sysname>system-view

[Sysname] bgp 200

[Sysname-bgp-default] address-family ipv4 unicast

[Sysname-bgp-default-ipv4] user-move fast-update

Related commands

peer advertise-ext-community

06-Layer 3—IP Routing Command Reference

BGP commands

address-family ipv6

bestroute ipv6-nexthop

bestroute origin-as-validation

check-origin-validation

confederation nonstandard

dampening

display bgp non-stop-routing status

display bgp peer

display bgp routing-table dedicated

display bgp routing-table ipv4 unicast

display bgp routing-table ipv6 multicast

display bgp routing-table ipv6 unicast

fast-reroute route-policy

Related commands

interface-peer/peer default-route-advertise

interface-peer/peer enable

interface-peer/peer graceful-restart timer restart extra

interface-peer/peer nexthop-recursive-policy disable

interface-peer/peer reflect-client

pd-monitor-mode enable