l All the IPv6 routing related configuration mentioned in this manual assumes that the system already operates in IPv4/IPv6 dual-stack mode. For dual stack mode configuration, see the part covering dual stack in the IPv6 Configuration module.

1.1 IPv6 Static Routing Configuration Commands

1.1.1 delete ipv6 static-routes all

Syntax

delete ipv6 static-routes all

View

System view

Parameter

None

Description

Use the delete ipv6 static-routes all command to delete all IPv6 static routes including the default route.

When using this command, you will be prompted whether to continue the deletion and only after you have confirmed the deletion will the static routes be deleted.

Related command: display ipv6 routing-table, ipv6 route-static.

Example

# Delete all IPv6 static routes.

<Sysname> system-view

[Sysname] delete ipv6 static-routes all

This will erase all ipv6 static routes and their configurations, you must reconfigure all static routes

Are you sure?[Y/N]:y

1.1.2 ipv6 route-static

Syntax

ipv6 route-static ipv6-address prefix-length [ interface-type interface-number ] nexthop-address [ preference preference-value ]

undo ipv6 route-static ipv6-address prefix-length [ interface-type interface-number ] [ nexthop-address ] [ preference preference-value ]

View

System view

Parameter

ipv6-address prefix-length: IPv6 address and prefix length.

interface-type interface-number: The interface type and interface number of the output interface.

nexthop-address: Next hop IPv6 address.

preference-value: Route preference value, in the range of 1 to 255. Defaults to 60.

Description

Use the ipv6 route-static command to configure an IPv6 static route.

Use the undo ipv6 route-static command to remove an IPv6 static route.

An IPv6 static route that has the destination address configured as “::/0” (a prefix length of 0) is the default IPv6 route. If the destination address of an IPv6 packet does not match any entries in the routing table, this default route will be used to forward the packet.

While configuring static routes, you can configure either the output interface or the next-hop address depending on the situations:

Related command: display ipv6 routing-table, delete ipv6 static-routes all.

Example

# Configure a static IPv6 route, with the destination address being 1:1:2::/24 and next hop being 1:1:3::1.

<Sysname> system-view

[Sysname] ipv6 route-static 1:1:2:: 24 1:1:3::1

Chapter 2 IPv6-RIPng Configuration Commands

& Note:

l Verify that the system already operates in IPv4/IPv6 dual-stack mode before configuring IPv6 routing.

2.1 RIPng Configuration Commands

2.1.1 checkzero

Syntax

checkzero

undo checkzero

View

RIPng view

Parameter

None

Description

Use the checkzero command to enable the zero field check for RIPng packet headers.

Use the undo checkzero command to disable the zero field check.

The zero field check is enabled by default.

Some fields in RIPng packet headers must be zero. These fields are called zero fields. You can enable the zero field check for RIPng packet headers. If any such field contains a non-zero value, the entire RIPng packet will not be processed.

Example

# Enable the zero field check for RIPng packet headers.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] checkzero

# Disable the zero field check for RIPng packet headers.

[Sysname-ripng-100] undo checkzero

2.1.2 default cost

Syntax

default cost value

undo default cost

View

RIPng view

Parameter

value: Default metric of a redistributed route, in the range of 0 to 16.

Description

Use the default cost command to define the default metric of a redistributed route.

Use the undo default cost command to restore the default metric defined in the above command.

By default, the default metric of redistributed routes is 0.

The metric of a redistributed route is determined by the default cost command when you use the import-route command, with value not specified, to redistribute other protocol routes

Related command: import-route.

Example

# Set the default metric of a redistributed route to 2.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] default cost 2

2.1.3 display ripng

Syntax

display ripng [ process-id ]

View

Any view

Parameter

process-id: RIPng process number, in the range of 1 to 65535.

Description

Use the display ripng command to display the running status and configuration information of a RIPng process. If process-id is not specified, information of all RIPng processes will be displayed. Otherwise, only the information of the specified RIPng process will be displayed.

Example

# Display the information of all configured RIPng processes.

<Sysname> display ripng

RIPng process : 1

Preference : 100

Checkzero : Enabled

Default Cost : 0

Maximum number of balanced paths : 3

Update time : 30 sec(s) Timeout time : 180 sec(s)

Suppress time : 120 sec(s) Garbage-Collect time : 240 sec(s)

Number of periodic updates sent : 0

Number of trigger updates sent : 0

Table 2-1 Description on the fields of the display ripng command

Field	Description
RIPng Process	RIPng process number
Preference	RIPng route priority
Checkzero	Zero field check for RIPng packet headers
Default Cost	Default metric of a redistributed route.
Maximum number of balanced paths	Maximum number of equivalent routes
Update time	RIPng updating interval, in seconds
Timeout time	RIPng timeout interval, in seconds
Suppress time	RIPng suppress interval, in seconds
Garbage-Collect time	RIPng garbage collection interval, in seconds
Number of periodic updates sent	Number of RIPng updates sent periodically
Number of trigger updates sent	Number of RIPng updates triggered to be sent

2.1.4 display ripng database

Syntax

display ripng process-id database

View

Any view

Parameter

process-id: RIPng process number, in the range of 1 to 65535.

Description

Use the display ripng database command to display all active routes in the RIPng advertised database, which are sent in normal RIPng update messages.

Example

# Display the active routes in the database advertised by RIPng process 100.

<Sysname> display ripng 100 database

2001:7B::2:2A1:5DE/64,

cost 4, Imported

1:13::/120,

cost 4, Imported

1:32::/120,

cost 4, Imported

1:33::/120,

cost 4, Imported

100::/32,

via FE80::200:5EFF:FE04:3302, cost 2

3FFE:C00:C18:1::/64,

via FE80::200:5EFF:FE04:B602, cost 2

3FFE:C00:C18:1::/64,

via FE80::200:5EFF:FE04:B601, cost 2

3FFE:C00:C18:2::/64,

via FE80::200:5EFF:FE04:B602, cost 2

3FFE:C00:C18:3::/64,

via FE80::200:5EFF:FE04:B601, cost 2

4000:1::/64,

via FE80::200:5EFF:FE04:3302, cost 2

4000:2::/64,

via FE80::200:5EFF:FE04:3302, cost 2

Table 2-2 Description on fields of the display ripng database command

Field	Description
2001:7B::2:2A1:5DE/64	IPv6 destination address/prefix length
via	The next hop IPv6 address
cost	Route metric value
Imported	Routes learnt from other routing protocols

2.1.5 display ripng interface

Syntax

display ripng process-id interface [ interface-type interface-number ]

View

Any view

Parameter

process-id: RIPng process number, in the range of 1 to 65535.

interface-type interface-number: Interface type and interface number.

Description

Use the display ripng interface command to display the RIPng interface information.

Example

# Display interface information of RIPng process 1.

<Sysname> display ripng 1 interface

Interface-name: Vlan-interface 100

Link Local Address: FE80::200:5EFF:FE19:3E00

Split-horizon: on Poison-reverse: off

MetricIn: 0 MetricOut: 1

Default route: off

Table 2-3 Description on the fields of the display ripng interface command

Field	Description
Interface-name	Name of an interface running RIPng.
Link Local Address	Link-local address of an interface running RIPng
Split-horizon	Indicates whether the split horizon function is enabled (on: Enabled off: Disabled).
Poison-reverse	Indicates whether the poison reverse function is enabled (on: Enabled off: Disabled).
MetricIn/MetricOut	Additional metric to incoming and outgoing routes
Default route	l Default-route: only or Default-route: originate, indicates advertising default route. Only means that the interface only default route is advertised. Originate means that the default route and other RIPng routes are advertised. l Default-route: off, indicates that no default route is defined or the garbage-collect time expires after stopping the default route announcement. l Default-route: in garbage-collect status (in second), after default route announcement, the interface advertises the default route with metric 16 during the garbage-collect time.

2.1.6 display ripng route

Syntax

display ripng process-id route

View

Any view

Parameter

process-id: RIPng process number, in the range of 1 to 65535.

Description

Use the display ripng route command to display routing information of RIPng and timers associate to each route.

Example

# Display routing information of RIPng process 100.

<Sysname> display ripng 100 route

Route Flags: A - Aging, S - Suppressed, G - Garbage-collect

----------------------------------------------------------------

Peer FE80::20F:E2FF:FE00:220A on Vlan-interface100

Dest 4:3::/64,

via FE80::20F:E2FF:FE00:220A, cost 1, tag 0, A, 34 Sec

Table 2-4 Description on the fields of the display ripng route command

Field	Description
Peer	Neighbor connected to the interface
Dest	IPv6 destination address
via	Next hop IPv6 address
cost	Routing metric value
tag	Route tag
Sec	Time that a route entry stays in a particular state
“A”	The route is in the aging state
“S”	The route is in the suppressed state
“G”	The route is in the Garbage-collect state

2.1.7 filter-policy export

Syntax

filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name } export [ protocol [ process-id ] ]

undo filter-policy export [ protocol [ process-id ] ]

View

RIPng view

Parameter

acl6-number: ACL number used to filter advertised routing information, in the range of 2000 to 3999.

ipv6-prefix-name: Prefix name of the destination IPv6 address which is used to filter routing information, a string of 1 to 19 characters.

protocol: Routing protocol of the filtered routing information, currently including bgp4+, direct, isisv6, ospfv3, ripng, and static

process-id: Process number of the routing protocol of the filtered routing information, in the range of 1 to 65535. This argument must be specified when the routing protocol is rip, ospf, or isisv6.

Description

Use the filter-policy export command to define the export filtering policy. Only filtered routes can be announced in the update messages.

Use the undo filter-policy export command to remove the export filtering policy.

By default, RIPng does not filter any advertised routing information.

If the protocol argument is specified when this command is executed, routing information of the redistributed route of the specified routing protocol will be displayed. Otherwise, routing information of all advertised routing information will be displayed.

Example

# Use Filter 2 list to filter the advertised RIPng update messages.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] filter-policy ipv6-prefix Filter2 export

2.1.8 filter-policy import

Syntax

filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name } import

undo filter-policy import

View

RIPng view

Parameter

acl6-number: ACL number used to filter received routing information, in the range of 2000 to 3999.

ipv6-prefix ipv6-prefix-name: Uses the prefix name of IPv6 addresses to filter routes. The ipv6-prefix-name argument represents the prefix name of the destination IPv6 address which is used to filter routing information and consists of 1 to 19 characters.

Description

Use the filter-policy import command to filter received routing information. Only routes which meet the filtering policy can be received.

Use the undo filter-policy import command to remove the filtering policy.

By default, RIPng does not filter received routing information.

Example

# Use Filter 1 list to filter the received RIPng update messages.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] filter-policy ipv6-prefix Filter1 import

2.1.9 import-route

Syntax

import-route protocol [ process-id ] [ allow-ibgp ] [ cost cost-value | route-policy route-policy-name ] *

undo import-route protocol [ process-id ]

View

RIPng view

Parameter

protocol: Routing protocols that RIPng can redistribute, currently including bgp4+, direct, isisv6, ospfv3, ripng, and static.

process-id: Process number of the redistributed routing protocol, in the range of 1 to 65535, valid for isisv6, ospfv3, and ripng.

cost-value: Routing metric of a redistributed route, in the range of 0 to 16. If cost value is not specified, the metric is the default defined by the default cost command.

route-policy route-policy-name: Specifies a route policy name consisting of 1 to 19 characters.

allow-ibgp: The keyword allow-ibgp is only available when the protocol is bgp4+. The command import-route bgp4+ means only EBGP routes are redistributed. The command import-route bgp4+ allow-ibgp means IBGP routes are also included.

Description

Use the import-route command to redistribute routes learnt from other routing protocols.

Use the undo import-route command to remove the redistributed routes.

You can filter the redistributed routes and define the route attribute through the route policy.

By default, RIPng does not redistribute other routes.

l You can specify route-policy to configure a route policy so that specific routes can be redistributed.

l You can specify cost to configure a routing metric for a redistributed route.

Related command: default cost.

Example

# Redistribute an IPv6-IS-IS route (process 7) and define the metric as 7.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] import-route isisv6 7 cost 7

2.1.10 maximum load-balancing

Syntax

maximum load-balancing number

undo maximum load-balancing

View

RIPng view

Parameter

number: Maximum number of equivalent routes in load sharing mode. in the range of 1 to 4

Description

Use the maximum load-balancing command to define the maximum number of equivalent routes in load sharing mode.

Use the undo maximum load-balancing command to restore the default maximum number of equivalent routes.

By default, the Maximum number of equivalent routes is 4.

& Note:

Configure the maximum number of equivalent routes according to the memory size.

Example

# Set the maximum number of equivalent routes in load sharing mode to 2.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] maximum load-balancing 2

# Restore the default maximum number of equivalent routes.

[Sysname-ripng-100] undo maximum load-balancing

2.1.11 preference

Syntax

preference [ route-policy route-policy-name ] value

undo preference [ route-policy ]

View

RIPng view

Parameter

route-policy-name: Name of a route policy, consisting of 1 to 19 characters. A priority level is set for routes satisfying specific conditions.

value: Route priority level, in the range of 1 to 255.

Description

Use the preference command to define the RIPng route priority.

Use the undo preference route-policy command to restore the default route priority.

By default, the priority of a RIPng route is 100.

You can apply a route policy to set a priority for a specific route by assigning a value to the route-policy keyword:

l If a priority is set for a matched route in the route policy, the priority of the matched route is the one set in the route policy while the priorities of other routes are those set by the preference command.

l If no priority is set for a matched route in the route policy, the priorities of all routes are set by the preference command.

Example

# Set the RIPng route priority to 120.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] preference 120

# Restore the default RIPng route priority.

[Sysname-ripng-100] undo preference

2.1.12 ripng

Syntax

ripng [ process-id ]

undo ripng [ process-id ]

View

System view

Parameter

process-id: RIPng process number, in the range of 1 to 65535. The default value is 1.

Description

Use the ripng command to create a RIPng process and enter RIPng view.

Use the undo ripng command to stop running a RIPng process.

By default, the system does not run any RIPng process.

Example

# Create RIPng process 100 and enter RIPng view.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100]

# Stop running RIPng process 100.

[Sysname] undo ripng 100

2.1.13 ripng default-route

Syntax

ripng default-route { only | originate } [ cost value ]

undo ripng default-route

View

Interface view

Parameter

only: Indicates that only IPv6 default route (::/0) is advertised.

originate: Indicates that the IPv6 default route (::/0) is advertised without suppressing other routes.

value: Metric of the advertised default route, in the range of 1 to 15, with a default value of 1.

Description

Use the ripng default-route command to advertise a default route with the specified routing metric to a RIPng neighbor.

Use the undo ripng default-route command to stop advertising and forwarding the default route.

By default, a RIP process does not advertise the default route.

After you execute this command, the generated RIPng default route is advertised via a route update message over the specified interface. This IPv6 default route is advertised without considering whether it already exists in IPv6 routing table.

Example

# Configure RIPng on Vlan-interface100 to advertise only the default route in an update message from this interface.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng default-route only

Configure RIPng on Vlan-interface101 to advertise the default route together with other routes in an update message from this interface.

<Sysname> system-view

[Sysname] interface vlan-interface 101

[Sysname-Vlan-interface101] ripng default-route originate

2.1.14 ripng enable

Syntax

ripng process-id enable

undo ripng

View

Interface view

Parameter

process-id: RIPng process number, in the range of 1 to 65535.

Description

Use the ripng enable command to enable RIPng on the specified interface.

Use the undo ripng command to disable RIPng on the specified interface.

By default, RIPng is disabled on an interface.

Example

# Enable RIPng100 on Vlan-interface100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng 100 enable

2.1.15 ripng metricin

Syntax

ripng metricin value

undo ripng metricin

View

Interface view

Parameter

value: Additional metric to a received route, in the range of 0 to 16.

Description

Use the ripng metricin command to define an additional metric for a received RIPng route.

Use the undo ripng metricin command to restore the default additional metric.

By default, the additional metric to a received route is 0.

Related command: ripng metricout.

Example

# Define the additional routing metric as 12 for a RIPng route received by Vlan-interface100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng metricin 12

2.1.16 ripng metricout

Syntax

ripng metricout value

undo ripng metricout

View

Interface view

Parameter

value: Additional metric to an advertised route, in the range of 1 to 16, with a default value of 1.

Description

Use the ripng metricout command to configure an additional metric for a RIPng route advertised by an interface.

Use the undo rip metricout command to restore the default additional metric.

By default, the additional routing metric to a RIPng route advertised by an interface is 1.

Related command: ripng metricin.

Example

# Set the additional metric to 12 for routes advertised by Vlan-interface100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng metricout 12

2.1.17 ripng poison-reverse

Syntax

ripng poison-reverse

undo ripng poison-reverse

View

Interface view

Parameter

None

Description

Use the rip poison-reverse command to enable the poison reverse function.

Use the undo rip poison-reverse command to disable the poison reverse function.

By default, the poison reverse function is disabled.

Example

# Enable the poison reverse function for RIPng update messages on Vlan-interface100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng poison-reverse

2.1.18 ripng split-horizon

Syntax

ripng split-horizon

undo ripng split-horizon

View

Interface view

Parameter

None

Description

Use the rip split-horizon command to enable the split horizon function.

Use the undo rip split-horizon command to disable the split horizon function.

By default, the split horizon function is enabled.

Note that:

l The split horizon function is necessary for preventing routing loops. Therefore, you are not recommended to disable it.

l In special cases, make sure that it is necessary to disable the split horizon function before doing so.

& Note:

Only the poison reverse function takes effect if both the poison reverse and split horizon functions are enabled.

Example

#Enable the split horizon function on Van-interface100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng split-horizon

2.1.19 ripng summary-address

Syntax

ripng summary-address ipv6-address prefix-length

undo ripng summary-address ipv6-address prefix-length

View

Interface view

Parameter

ipv6-address: IPv6 network address for the summarized routes.

prefix-length: IPv6 prefix length, in the range of 0 to 128. It indicates the number of consecutive bits of the significant part of the prefix, which defines the network.

Description

Use the ripng summary-address command to assign a summary IPv6 address and the prefix.

Use the undo ripng summary-address command to remove the summary IPv6 address.

If the prefix and the prefix length of a route match the IPv6 prefix, the IPv6 prefix will be advertised instead. Thus, one route can be advertised on behalf of many routes with the same prefix. After summarization, the route cost is the lowest cost of those summarized routes.

Example

# Assign an IPv6 address with a 64-bit prefix on Vlan-interface100 and configure a summary IPv6 address.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 address 2001:200::3EFF:FE11:6770/64

[Sysname-Vlan-interface100] ripng summary-address 2001:200:: 35

2.1.20 timers

Syntax

timers { garbage-collect garbage-collect-value | suppress suppress-value | timeout timeout-value | update update-value }*

undo timers { garbage-collect | suppress | timeout | update }*

View

RIPng view

Parameter

garbage-collect-value: Length of the garbage-collect timer in seconds, in the range of 1 to 86400.

suppress-value: Length of the suppress timer in seconds, in the range of 0 to 86,400.

timeout-value: Length of the timeout timer in seconds, in the range of 1 to 86,400.

update-value: Length of the update timer in seconds, in the range of 1 to 86,400.

Description

Use the timers command to configure RIPng timers.

Use the undo timers command to restore the default timer lengths.

By default, the length of the garbage-collect timer is 240 seconds, that of the suppress timer 120 seconds, that of the timeout timer 180 seconds, and that of the update timer 30 seconds.

RIPng is controlled by the above four timers.

l The update timer defines the interval between sending update messages.

l The timeout timer defines the route aging time. If no update message related to a route is received within the aging time, the metric of the route is set to 16 in the routing table.

l The suppress timer defines how long a RIPng route stays in the suppressed state. When the metric of a route is 16, the route enters the suppressed state. In the suppressed state, only routes which come from the same neighbor and whose metric is less than 16 will be received by the router to replace unreachable routes.

l The garbage-collect timer defines the interval from when the metric of a route becomes 16 to when it is deleted from the routing table. During the garbage-collect timer length, RIPng advertises the route with the routing metric set to 16. If no update message is announced for that route before the garbage-collect timer expires, the route will completely be deleted from the routing table.

Note that:

l You are not recommended to change the default values of these timers under normal circumstances.

l The lengths of these timers must be kept consistent on all routers and access servers in the network

Example

# Configure the update, timeout, suppress, and garbage-collect timers as 5s, 15s, 15s and 30s.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] timers update 5

[Sysname-ripng-100] timers timeout 15

[Sysname-ripng-100] timers suppress 15

[Sysname-ripng-100] timers garbage-collect 30

Chapter 3 IPv6-OSPFv3 Configuration Commands

& Note:

l Verify that the system already operates in IPv4/IPv6 dual-stack mode before configuring IPv6 routing.

3.1 OSPFv3 Configuration Commands

3.1.1 abr-summary

Syntax

abr-summary ipv6-address prefix-length [ not-advertise ]

undo abr-summary ipv6-address prefix-length

View

OSPFv3 area view

Parameter

ipv6-address: Destination IPv6 address prefix of the summary route.

prefix-length: The length of the prefix, in the range 0 to 128.

not-advertise: Specifies not to advertise the summary IPv6 route.

Description

Use the abr-summary command to configure an IPv6 summary route.

Use the undo abr-summary command to remove an IPv6 summary route.

By default, no route summarization is available.

You can use this command only on an ABR to configure a summary route for the area. The ABR advertises only the summary route to other areas. Multiple contiguous networks may be available in an area, where you can summarize them into one route for advertisement.

After the undo abr-summary command is executed, the aggregated routes will be advertised again.

Example

# Summarize networks 2000:1:1:1::/64 and 2000:1:1:2::/64 in Area 1 into 2000:1:1::/48 for advertisement to other areas.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] area 1

[Sysname-ospfv3-1-area-0.0.0.1] abr-summary 2000:1:1:: 48

3.1.2 area

Syntax

area area-id

View

OSPFv3 view

Parameter

area-id: The ID of an area, a decimal integer (in the range of 0 to 4294967295 and changed to IPv4 address format by the system) or an IPv4 address.

Description

Use the area command to enter OSPFv3 area view.

& Note:

The undo form of the command is not available. An area is removed automatically if there is no configuration and no interface is up in the area.

Example

# Enter OSPFv3 Area 0 view.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] area 0

[Sysname-ospfv3-1-area-0.0.0.0]

3.1.3 default cost

Syntax

default cost value

undo default cost

View

OSPFv3 view

Parameter

value: Specifies the default cost for redistributed routes, in the range of 1 to 16777214.

Description

Use the default cost command to configure the default cost for redistributed routes.

Use the undo default cost command to restore the default.

By default, the default cost is 1.

You need to configure the default cost value for redistributed routes to advertise them throughout the whole AS.

If multiple OSPFv3 processes available, use of this command takes effect for the current process only.

Example

# Specify the default cost for redistributed routes as 10.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] default cost 10

3.1.4 default-cost

Syntax

default-cost value

undo default-cost

View

OSPFv3 area view

Parameter

value: Specifies the default route cost of send a packet to the stub area, in the range of 0 to 65535, which defaults to 1.

Description

Use the default-cost command to specify the cost of the default route to the stub area.

Use the undo-default-cost command to restore the default value.

Use of this command is only available on the ABR that is connected to a stub area.

You have two commands to configure a stub area: stub, defaulted-cost. You need to use the stub command on routers attached to a stub area to configure the area as stub.

If multiple OSPFv3 processes running, use of this command takes effect only for the current process.

Related command: stub.

Example

# Configure Area1 as a stub area, and specify the cost of the default route to the stub area as 60.

<Sysname> system-view

[Sysname] ospfv3

[Sysname-ospfv3-1] area 1

[Sysname-ospfv3-1-area-0.0.0.1] stub

[Sysname-ospfv3-1-area-0.0.0.1] default-cost 60

3.1.5 display debugging ospfv3

Syntax

display debugging ospfv3

View

Any view

Parameter

None

Description

Use the display debugging ospfv3 command to display global OSPFv3 debugging state information.

Example

# Display the global OSPFv3 debugging state information.

<Sysname> display debugging ospfv3

3.1.6 display ospfv3

Syntax

display ospfv3 [ process-id ]

View

Any view

Parameter

process-id: Specifies the ID of an OSPFv3 process, ranging from 1 to 65535.

Description

Use the display ospfv3 command to display OSPFv3 brief information. If no process ID is specified, OSPFv3 brief information about all processes will be displayed.

Example

# Display brief information about all OSPFv3 processes.

<Sysname> display ospfv3

Routing Process "OSPFv3 (1)" with ID 1.1.1.1

SPF schedule delay 5 secs, Hold time between SPFs 10 secs

Minimum LSA interval 5 secs, Minimum LSA arrival 1 secs

Number of external LSA 0. These external LSAs’ checksum Sum 0x0000

Number of AS-Scoped Unknown LSA 0

Number of LSA originated 3

Number of LSA received 0

Number of areas in this router is 1

Area 0.0.0.1

Number of interfaces in this area is 1

SPF algorithm executed 1 times

Number of LSA 2. These LSAs’ checksum Sum 0x20C8

Number of Unknown LSA 0

Table 3-1 Description on the fields of the display isofv3 command

Field	Description
Routing Process "OSPFv3 (1)" with ID 1.1.1.1	OSPFv3 process is 1, and router ID is 1.1.1.1.
SPF schedule delay	Delay interval of SPF calculation
Hold time between SPFs	Hold time between SPF calculations
Minimum LSA interval	Minimum interval for generating LSAs
Minimum LSA arrival	Minimum LSA repeat arrival interval
Number of external LSA	Number of ASEs
These external LSAs’ checksum Sum	Sum of all the ASEs’ checksum
Number of AS-Scoped Unknown LSA	Number of LSAs with unknown flooding scope
Number of LSA originated	Number of LSAs originated
Number of LSA received	Number of LSAs received
Number of areas in this router	Number of areas this router attached to
Area	Area ID
Number of interfaces in this area	Number of interfaces attached to this area
SPF algorithm executed 1 times	SPF algorithm is executed 1 time
Number of LSA	Number of LSAs
These LSAs’ checksum Sum	Sum of all LSAs’ checksum
Number of Unknown LSA	Number of unknown LSAs

3.1.7 display ospfv3 interface

Syntax

display ospfv3 interface [ interface-type interface-number | statistic ]

View

Any view

Parameter

interface-type interface-number: Interface type and interface number.

statistic: Displays the interface statistics.

Description

Use the display ospfv3 interface command to display OSPFv3 interface information.

Example

# Display OSPFv3 interface information.

<Sysname > display ospfv3 interface Vlan-interface 200

Vlan-interface200 is up, line protocol is up

Interface ID 11665607

IPv6 Prefixes

FE80::20F:E2FF:FE00:5 (Link-Local Address)

2001:1::2

OSPFv3 Process (1), Area 0.0.0.1, Instance ID 0

Router ID: 1.1.1.1, Network Type: BROADCAST, Cost: 1

Transmit Delay is 1 sec, State: DR, Priority: 1

Designated Router (ID) 1.1.1.1

Interface Address: FE80::20F:E2FF:FE00:5

Backup Designated Router (ID): 2.2.2.2

Interface Address: FE80::20F:E2FF:FE00:2205

Timer interval configured, Hello: 10, Dead: 40, Wait: 40, Retransmit: 5

Hello due in 00:00:08

Neighbor Count is 1, Adjacent neighbor count is 1

Table 3-2 Description on the fields of the display ospfv3 interface command

Field	Description
Interface ID	Interface ID
IPv6 Prefixes	IPv6 Prefix
OSPFv3 Process	OSPFv3 Process
Area	Area ID
Instance ID	Instance ID
Router ID	Router ID
Network Type	Network type of the interface
Cost	Cost value of the interface
Transmit Delay	Transmission delay of the interface
State	Interface state
Priority	DR priority of the interface
Designated Router (ID)	Designated Router (ID)
Backup Designated Router (ID)	Backup Designated Router (ID)
Timer interval configured	The configured OSPFv3 timers are defined as follows:
	Hello	Interval at which the interface sends Hello packets
	Dead	Dead time for neighbor
	Wait	The interface exits the Waiting state after this timer expires.
	Retransmit	Interval at which the interface retransmits LSAs
Hello due in 00:00:08	Hello packet will be sent in 8 seconds
Neighbor Count	Number of Neighbors on the interface
Adjacent neighbor count	Number of Adjacencies on the interface

3.1.8 display ospfv3 lsdb

Syntax

View

Any view

Parameter

process-id: Specifies ID of an OSPFv3 process, ranging from 1 to 65535.

external: Specifies to display information about AS-external LSAs.

inter-prefix: Specifies to display information about Inter-area-prefix LSAs.

inter-router: Specifies to display information about Inter-area-router LSAs.

intra-prefix: Specifies to display information about Intra-area-prefix LSAs.

link: Specifies to display information about Link-LSAs.

network: Specifies to display information about Network-LSAs.

router: Specifies to display information about Router-LSAs.

link-state-id: Link state ID, an IPv4 address.

originate-router router-id: The ID of the advertising router .

total: Specifies to display all information in the LSDB.

Description

Use the display ospfv3 lsdb command to display OSPFv3 LSDB information.

Example

# Display OSPFv3 LSDB information.

<Sysname> display ospfv3 lsdb

OSPFv3 Router with ID (5.5.5.5) (Process 1)

Link-LSA (Interface Vlan-interface100)

----------------------------------------------------------------

Link State ID Origin Router Age SeqNum CkSum Prefix

0.15.0.9 5.5.5.5 0304 0x80000001 0x5b6a 1

0.15.0.9 6.6.6.6 0311 0x80000001 0x6956 1

Router-LSA (Area 0.0.0.0)

----------------------------------------------------------------

Link State ID Origin Router Age SeqNum CkSum Link

0.0.0.0 5.5.5.5 0263 0x80000002 0x823f 1

0.0.0.0 6.6.6.6 0264 0x80000003 0x625a 1

Network-LSA (Area 0.0.0.0)

----------------------------------------------------------------

Link State ID Origin Router Age SeqNum CkSum

0.15.0.9 6.6.6.6 0264 0x80000001 0x3498

Intra-Area-Prefix-LSA (Area 0.0.0.0)

----------------------------------------------------------------

Link State ID Origin Router Age SeqNum CkSum Prefix Reference

0.0.0.2 6.6.6.6 0263 0x80000001 0x95c4 1 Network-LSA

Table 3-3 Description on the fields of the display isofv3 lsdb command

Field	Description
Link-LSA	Link-LSA
Link State ID	Link State ID
Origin Router	Originating Router
Age	Age of LSAs
SeqNum	LSA sequence number
CkSum	LSA Checksum
Prefix	Number of Prefixes
Router-LSA	Router-LSA
Link	Number of links
Network-LSA	Network-LSA
Intra-Area-Prefix-LSA	Intra-Area-Prefix-LSA
Reference	Type of referenced LSA

# Display Link-local LSA information in the LSDB.

<Sysname> dis ospfv3 lsdb link

OSPFv3 Router with ID (4.4.4.4) (Process 1)

Link-LSA (Interface Vlan-interface400)

----------------------------------------------------------------

LS age : 1536

LS Type : Link-LSA

Link State ID : 0.178.1.143

Originating Router: 3.3.3.3

LS Seq Number : 0x80000003

Checksum : 0x22A7

Length : 56

Priority : 1

Options : 0x000011 (-|R|-|-|-|V6)

Link-Local Address: FE80::2E0:FCFF:FE00:242A

Number of Prefixes: 1

Prefix : 2001:2::/64

Prefix Options: 0 (-|-|-|-)

LS age : 1558

LS Type : Link-LSA

Link State ID : 0.178.1.143

Originating Router: 4.4.4.4

LS Seq Number : 0x80000003

Checksum : 0x4A6A

Length : 56

Priority : 1

Options : 0x000011 (-|R|-|-|-|V6)

Link-Local Address: FE80::2E0:FCFF:FE00:550A

Number of Prefixes: 1

Prefix : 2001:2::/64

Prefix Options: 0 (-|-|-|-)

Table 3-4 Description on the fields of the display ospfv3 lsdb command

Field	Description
LS age	Age of LSA
LS Type	Type of LSA
Originating Router	Originating Router
LS Seq Number	LSA Sequence Number
Checksum	LSA Checksum
Length	LSA Length
Priority	Router Priority
Options	Options
Link-Local Address	Link-Local Address
Number of Prefixes	Number of Prefixes
Prefix	Address prefix
Prefix Options	Prefix options

3.1.9 display ospfv3 lsdb statistic

Syntax

display ospfv3 lsdb statistic

View

Any view

Parameter

None

Description

Use the display ospfv3 lsdb statistic command to display LSA statistics in the OSPFv3 LSDB.

Example

# Display OSPFv3 LSDB statistics.

<System> display ospfv3 lsdb statistic

OSPFv3 Router with ID (1.1.1.1) (Process 1)

LSA Statistics

----------------------------------------------------------------------

Area ID Router Network InterPre InterRou IntraPre Link ASE

0.0.0.0 2 1 1 0 1

0.0.0.1 1 0 1 0 1

Total 3 1 2 0 2 3 0

Table 3-5 Descriptions on the fields of the display ospfv3 lsdb statistic command

Field	Description
Area ID	Area ID
Router	Router-LSA number
Network	Network-LSA number
InterPre	Inter-Area-Prefix-LSA number
InterRou	Inter-Area-Router-LSA number
IntraPre	Intra-Area-Prefix-LSA number
Link	Link-LSA number
ASE	AS-external-LSA number
Total	Total LSA number

3.1.10 display ospfv3 next-hop

Syntax

display ospfv3 [ process-id ] next-hop

View

Any view

Parameter

process-id: Specifies ID of an OSPFv3 process, ranging from 1 to 65535.

Description

Use the display ospfv3 next-hop command to display OSPFv3 next hop information.

If no process is specified, next hop information of all OSPFv3 processes is displayed.

Example

# Display OSPFv3 next hop information.

<Sysname> display ospfv3 next-hop

OSPFv3 Router with ID (2.2.2.2) (Process 1)

Neighbor-Id Next-Hop Interface RefCount

1.1.1.1 FE80::20F:E2FF:FE00:1 vlan100 1

Table 3-6 Description on the fields of the display ospfv3 next-hop command

Field	Description
Neighbor-Id	Neighboring router ID
Next-hop	Next-hop address
Interface	Outbound interface
RefCount	Reference count

3.1.11 display ospfv3 peer

Syntax

display ospfv3 [ process-id ] [ area area-id ] peer [ [ interface-type interface-number ] [ verbose ] | peer-router-id ]

View

Any view

Parameter

process-id: Specifies ID of an OSPFv3 process, ranging from 1 to 65535.

area: Specifies to display neighbor information of the specified area.

area-id: The ID of an area, a decimal integer that is translated into IPv4 address format by the system (in the range of 0 to 4294967295) or an IPv4 address.

statistic: Specifies to display the statistics of all neighbors.

interface-type interface-number: interface type and number.

verbose: Display detailed neighbor information.

peer-router-id: Router-ID of the specified neighbor.

Description

Use the display ospfv3 peer command to display OSPFv3 neighbor information.

l If no area-id is specified, the neighbor information of all areas is displayed.

l If no process-id is specified, the information of all processes is displayed.

l If no interface or neighbor Router-ID is specified, the neighbor information of all interfaces is displayed.

Example

# Display the neighbor information of OSPFv3 process 1 of an interface.

<Sysname> display ospfv3 1 peer Vlan-interface 400

OSPFv3 Process (1)

OSPFv3 Area (0.0.0.2)

Neighbor ID Pri State Dead Time Interface Instance ID

3.3.3.3 1 Full/Backup 00:00:38 Vlan400 0

Table 3-7 Description on the fields of the display isofv3 peer command

Field	Description
Neighbor ID	Neighbor ID
Pri	Priority of neighbor router
State	Neighbor state
Dead Time	Dead time remained
Interface	Interface connected to the neighbor
Instance ID	Instance ID

# Display detailed neighbor information of OSPFv3 process 1 of an interface.

<H3C> display ospfv3 1 peer Vlan-interface 400 verbose

OSPFv3 Process (1)

Neighbor: 3.3.3.3, interface address: FE80::2E0:FCFF:FE00:242A

In the area 0.0.0.2 via interface Vlan-interface400

DR is 4.4.4.4 BDR is 3.3.3.3

Options is 0x000011 (-|R|-|-|-|V6)

Dead timer due in 00:00:35

Database Summary List 0

Link State Request List 0

Link State Retransmission List 0

Table 3-8 Description on the fields of the display isofv3 peer verbose command

Field	Description
Neighbor	Neighbor ID
interface address	Interface address
In the area 0.0.0.2 via interface vlan-interface 400	Interface vlan-interface 400 belongs to area 2
DR is 4.4.4.4 BDR is 3.3.3.3	DR is 4.4.4.4, BDR is 3.3.3.3
Options is 0x000011 (-\|R\|-\|-\|-\|V6)	The option is 0x000011 (-\|R\|-\|-\|-\|V6)
Dead timer due in 00:00:35	Dead timer due in 00:00:35
Database Summary List	Number of LSAs sent in DD packet
Link State Request List	Number of LSAs in the link state request list
Link State Retransmission List	Number of LSAs in the link state retransmission list

3.1.12 display ospfv3 peer statistic

Syntax

display ospfv3 peer statistic

View

Any view

Parameter

None

Description

Use the display ospfv3 peer statistic command to display information about all OSPFv3 neighbors on the router, that is, numbers of neighbors in different states.

Example

# Display information about all OSPFv3 neighbors.

<Sysname> display ospfv3 peer statistic

OSPFv3 Router with ID (1.1.1.1) (Process 1)

Neighbor Statistics

----------------------------------------------------------------------

Area ID Down Init 2-way ExStar Exchange Loading Full

0.0.0.0 0 0 0 0 0 0 1

Total 0 0 0 0 0 0 1

Table 3-9 Description on the fields of the display ospfv3 peer statistic command

Field	Description
Area ID	Area ID
Down	In this state, neighbor initial state, the router has not received any information from a neighboring router for a period of time.
Init	In this state, the router received a Hello packet from the neighbor but the packet gives no ID of the router. Mutual communication is not available.
2-Way	Indicates mutual communication between the router and its neighbor is available. DR/BDR election is finished under this state (or higher).
ExStar	In this state, the router decides on the initial DD sequence number and master/slave relationship of the two parties.
Exchange	In this state, the router exchanges DD packets with the neighbor.
Loading	In this state, the router sends LSRs to request the neighbor for needed LSAs.
Full	Indicates LSDB synchronization has been accomplished between neighbors.
Total	Total number of neighbors under the same state

3.1.13 display ospfv3 request-list

Syntax

display ospfv3 [ process-id ] request-list [ statistic ]

View

Any view

Parameter

process-id: OSPFv3 process ID, in the range 1 to 65535.

statistic: Statistics of link state request list.

Description

Use the display ospfv3 request-list command to display OSPFv3 link state request list.

If no process is specified, link state request list information of all OSPFv3 processes is displayed.

Example

# Display the information of OSPFv3 link state request list.

<Sysname> display ospfv3 request-list

OSPFv3 Router with ID (1.1.1.1) (Process 1)

Interface Vlan100 Area-ID 0.0.0.1

----------------------------------------------------------------------

Nbr-ID 2.2.2.2

LS-Type LS-ID AdvRouter SeqNum Age

AS-External-LSA 0.0.16.66 2.2.2.2 0x80000001 98

AS-External-LSA 0.0.16.67 2.2.2.2 0x80000001 98

AS-External-LSA 0.0.16.68 2.2.2.2 0x80000001 98

Table 3-10 Description on the fields of the display ospfv3 request-list command

Field	Description
Interface	Interface name
Area-ID	Area ID
Nbr-ID	Neighbor router ID
LS-Type	Type of LSA
LS-ID	Link state ID
AdvRouter	Advertising router
SeqNum	LSA sequence number
Age	Age of LSA

# Display the statistics of OSPFv3 link state request list.

<Sysname> display ospfv3 request-list statistics

OSPFv3 Router with ID (1.1.1.1) (Process 1)

Interface Neighbor LSA-Count

Vlan100 2.2.2.2 0

Table 3-11 Description on the fields of the display ospfv3 request-list statistics command

Field	Description
Interface	Interface name
Neighbor	Neighbor router ID
LSA-Count	Number of LSAs in the request list

3.1.14 display ospfv3 retrans-list

Syntax

display ospfv3 [ process-id ] retrans-list [ statistics ]

View

Any view

Parameter

process-id: OSPFv3 process ID, in the range 1 to 65535.

statistics: Displays link state retransmission list statistics.

Description

Use the display ospfv3 retrans-list command to display OSPFv3 link state retransmission list.

If no process is specified, link state retransmission list information of all OSPFv3 processes is displayed.

Example

# Display the information of OSPFv3 link state retransmission list.

<Sysname> display ospfv3 retrans-list

OSPFv3 Router with ID (2.2.2.2) (Process 1)

Interface Vlan100 Area-ID 0.0.0.1

----------------------------------------------------------------------

Nbr-ID 2.2.2.2

LS-Type LS-ID AdvRouter SeqNum Age

Router-LSA 0.0.0.0 2.2.2.2 0x80000006 0

Network-LSA 0.15.0.8 2.2.2.2 0x80000001 0

Intra-Area-Prefix-LSA 0.0.0.1 2.2.2.2 0x80000006 0

Table 3-12 Description on the fields of the display ospfv3 retrans-list command

Field	Description
Interface	Interface name
Area-ID	Area ID
Nbr-ID	Neighbor router ID
LS-Type	Type of LSA
LS-ID	Link state ID
AdvRouter	Advertising Router
SeqNum	LSA sequence Number
Age	Age of LSA

# Display the statistics of OSPFv3 link state retransmission list.

<Sysname>display ospfv3 retrans-list statistics

OSPFv3 Router with ID (3.3.3.3) (Process 1)

Interface Neighbor LSA-Count

Vlan100 1.1.1.1 0

Table 3-13 Description on the fields of the display ospfv3 retrans-list statistics command

Field	Description
Interface	Interface name
Neighbor	Neighbor ID
LSA-Count	Number of LSAs in the retransmission request list

3.1.15 display ospfv3 routing

Syntax

View

Any view

Parameter

process-id: Specifies the ID of an OSPFv3 process, ranging from 1 to 65535.

ipv6-address: IPv6 address prefix.

prefix-length: Prefix length, in the range 0 to 128.

abr-routes: Specifies to display routes to ABR.

asbr-routes: Specifies to display routes to ASBR.

all: Specifies to display all routes.

statistics: Specifies to display the statistics of OSPFv3 routing table.

Description

Use the display ospfv3 routing command to display OSPFv3 routing table information.

If no process is specified, routing table information of all OSPFv3 processes is displayed.

Example

# Display OSPFv3 routing table information.

<Sysname> display ospfv3 routing

E1 - Type 1 external route, IA - Inter area route, I - Intra area route

E2 - Type 2 external route, * - Selected route

OSPFv3 Router with ID (1.1.1.1) (Process 1)

------------------------------------------------------------------------

*Destination: 2001::/64

Type : I Cost : 1

NextHop : directly-connected Interface: Vlan100

Table 3-14 Description on the fields of the display ospfv3 routing command

Field	Description
Destination	Destination network segment
Type	Route type
Cost	Route cost value
Next-hop	Next hop address
Interface	Outbound interface

# Display the statistics of OSPFv3 routing table.

<Sysname> display ospfv3 routing statistics

OSPFv3 Router with ID (1.1.1.1) (Process 1)

OSPFv3 Routing Statistics

Intra-area-routes : 1

Inter-area-routes : 0

External-routes : 0

Table 3-15 Description on the fields of the display ospfv3 routing statistics command

Field	Description
Intra-area-routes	Number of Intra-area-routes
Inter-area-routes	Number of inter-area routes
External-routes	Number of external routes

3.1.16 display ospfv3 statistic

Syntax

display ospfv3 statistic

View

Any view

Parameter

None

Description

Use the display ospfv3 statistic command to display outbound/inbound OSPFv3 packet statistics on associated interface(s).

Example

# Display outbound/inbound OSPFv3 packet statistics on associated interfaces.

<Sysname> display ospfv3 statistic

OSPFv3 Statistics

Interface Vlan-interface100 Instance 0

Type Input Output

Hello 189 63

DB Description 10 8

Ls Req 2 1

Ls Upd 16 6

Ls Ack 10 6

Table 3-16 Description on the fields of the display ospfv3 statistics command

Field	Description
Interface	Interface name
Instance	Instance number
Type	Type of packet
Input	Number of packets received by the interface
Output	Number of packets sent by the interface
Hello	Hello packet
DB Description	Database description packet
Ls Req	Link state request packet
Ls Upd	Link state update packet
Ls Ack	Link state acknowledgement packet

3.1.17 display ospfv3 topology

Syntax

display ospfv3 [ process-id ] topology [ area area-id ]

View

Any view

Parameter

process-id: Specifies the ID of an OSPFv3 process of which to display topology information, ranging from 1 to 65535.

area: Display the topology information of the specified area.

area-id: The ID of an area, a decimal integer (in the range of 0 to 4294967295) that is translated into IPv4 address format by the system or an IPv4 address.

Description

Use the display ospfv3 topology command to display OSPFv3 topology information. If no process is specified, topology information of all OSPFv3 processes is displayed.

Example

# Display OSPFv3 area 1 topology information.

<Sysname> display ospfv3 topology area 1

OSPFv3 Process (1)

OSPFv3 Area (0.0.0.1) topology

Type ID(If-Index) Bits Metric Next-Hop Interface

Rtr 1.1.1.1 --

Rtr 2.2.2.2 1 2.2.2.2 Vlan100

Table 3-17 Description on the fields of the display ospfv3 topology command

Field	Description
Type	Type of node
ID(If-Index)	Router ID
Bits	Flag bit
Metric	Cost value
Next-Hop	Next hop
Interface	Outbound interface

3.1.18 display ospfv3 vlink

Syntax

display ospfv3 [ process-id ] vlink

View

Any view

Parameter

process-id: Specifies the ID of an OSPFv3 process, ranging from 1 to 65535.

Description

Use the display ospfv3 vlink command to display OSPFv3 virtual link information. If no process is specified, virtual link information of all OSPFv3 processes is displayed.

Example

# Display OSPFv3 virtual link information.

<Sysname> display ospfv3 vlink

Virtual Link VLINK1 to router 1.1.1.1 is up

Transit area :0.0.0.1 via interface Vlan-interface100, instance ID: 0

Local address: 2000:1::1

Remote address: 2001:1:1::1

Transmit Delay is 1 sec, State: P-To-P,

Timer intervals configured, Hello: 10, Dead: 40, Wait: 40, Retransmit: 5

Hello due in 00:00:02

Adjacency state :Full

Table 3-18 Description on the fields of the display ospfv3 vlink command

Field	Description
Virtual Link VLINK1 to router 1.1.1.1 is up	The virtual link VLINK1 to router 1.1.1.1 is up
Transit area 0.0.0.1 via interface Vlan-interface100	Interface Vlan-interface100 in transit area 0.0.0.1.
instance ID	Instance ID
Local address	Local IPv6 address
Remote address	Remote IPv6 address
Transmit Delay	Transmit delay of sending LSAs
State	Interface state
Timer intervals configured, Hello: 10, Dead: 40, Wait: 40, Retransmit: 5	Timer intervals in seconds, Hello: 10, Dead: 40, Wait: 40, Retransmit: 5
Hello due in 00:00:02	Send hello packets in 2 seconds.
Adjacency state	Adjacency state

3.1.19 filter-policy export

Syntax

filter-policy { acl-number | ipv6-prefix ipv6-prefix-name } export [ isisv6 process-id | ospfv3 process-id | ripng process-id | bgp4+ | direct | static]

View

OSPFv3 view

Parameter

acl-number: Specifies the ACL number, ranging from 2000 to 3999.

ipv6-prefix ipv6-prefix-name: Specifies the name of an IPv6 prefix list, a string of up to 19 characters.

isisv6 process-id: Specifies to filter the IPv6-IS-IS routes with a specified process-id, which is in the range of 1 to 65535.

ospfv3 process-id: Specifies to filter the ospfv3 routes with a specified process-id, which is in the range of 1 to 65535.

ripng process-id: Specifies to filter the ripng routes with a specified process-id, which in the range of 1 to 65535.

bgp4+: Specifies to filter bgp4+ routes.

direct: Specifies to filter direct routes.

static: Specifies to filter static routes.

Description

Use the filter-policy export command to filter redistributed routes.

Use the undo filter-policy export command to remove the configuration.

By default, IPv6 OSPFv3 does not filter redistributed routes.

If no protocol is specified, all redistributed routes will be filtered.

& Note:

Using the filter-policy export command filters only routes redistributed by the import-route command. If the import-route command is not configured to redistribute routes from other protocols and other OSPFv3 processes, use of the filter-policy export command does not take effect.

Example

# Filter all redistributed routes using IPv6 ACL 2001.

<Sysname> system-view

[Sysname] acl ipv6 number 2001

[Sysname-acl6-basic-2001] rule permit source 2002:1:: 64

[Sysname-acl6-basic-2001] quit

[Sysname] ospfv3

[Sysname-ospfv3-1] filter-policy 2001 export

3.1.20 filter-policy import

Syntax

filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name } import

undo filter-policy import

View

OSPFv3 view

Parameter

acl6-number: Specifies an ACL number, ranging from 2000 to 3999.

ipv6-prefix ipv6-prefix-name: Specifies the name of an IPv6 prefix list, a string of up to 19 characters.

Description

Use the filter-policy import command to filter received routes.

Use the undo filter-policy import command to remove the configuration.

No received routes are filtered by default.

& Note:

Using the filter-policy import command only filters routes computed by OSPFv3. The routes that fail to pass are not added to the routing table.

Example

# Filter received routes using the IPv6 prefix list abc.

<Sysname> system-view

[Sysname] ip ipv6-prefix abc permit 2002:1:: 64

[Sysname] ospfv3 1

[Sysname-ospfv3-1] filter-policy ipv6-prefix abc import

3.1.21 import-route

Syntax

import-route { isisv6 process-id | ospfv3 process-id | ripng process-id | bgp4+ [ allow-ibgp ] | direct | static } [ cost value | type type | route-policy route-policy-name ]*

undo import-route { isisv6 process-id | ospfv3 process-id | ripng process-id | bgp4+ | direct | static }

View

OSPFv3 view

Parameter

isisv6 process-id: Specifies a process ID of ISISv6 to redistribute ISISv6 routes with the process ID, in the range 1 to 65535.

ospfv3 process-id: Specifies a process ID of OSPFv3 to redistribute OSPFv3 routes with the process ID, in the range 1 to 65535.

ripng process-id: Specifies a process ID of ripng to redistribute ripng routes with the process ID, in the range 1 to 65535.

bgp4+: Specifies to redistribute bgp4+ routes.

allow-ibgp: Allows redistributing IBGP route.

direct: Specifies to redistribute direct routes.

static: Specifies to redistributes static routes.

cost value: Specifies the cost for redistributed routes, ranging from 1 to 16777214. It defaults to 1.

type type: Specifies the type for redistributed routes, 1 or 2. It defaults to 2.

route-policy route-policy-name: Specifies to redistribute only the routes that match the specified route-policy. route-policy-name is a string of up to 19 characters.

Caution:

Use the import-route bgp4+ command to redistribute EBGP routes only, while use the import-route bgp4+ allow-ibgp command to redistribute both EBGP and IBGP routes. The redistributed IBGP routes may cause routing loops. Therefore, use this command with caution.

Description

Use the import-route command to redistribute routes.

Use the undo import-route command to disable routes redistribution.

IPv6 OSPFv3 does not redistribute routes from other protocols by default.

Example

# Configure to redistribute routes from RIPng and specify the type as type 2 and cost as 50.

<Sysname> system-view

[Sysname] ospfv3

[Sysname-ospfv3-1] import-route ripng 10 type 2 cost 50

# Configure OSPFv3 process 100 to redistribute the routes found by OSPFv3 process 160.

<Sysname> system-view

[Sysname] ospfv3 100

[Sysname-ospfv3-100] import-route ospfv3 160

3.1.22 maximum load-balancing

Syntax

maximum load-balancing maximum

undo maximum load-balancing

View

OSPFv3 view

Parameter

maximum: The maximum number of load-balanced routes. in the range of 1 to 4, which defaults to 4.

Description

Use the maximum load-balancing command to configure the maximum number of load-balanced routes.

Use the undo maximum load-balancing command to restore the default.

Example

# Configure the maximum load-balancing routes as 2.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] maximum load-balancing 2

3.1.23 ospfv3

Syntax

ospfv3 [ process-id ]

undo ospfv3 [ process-id ]

View

System view

Parameter

process-id: Specifies the ID of an OSPFv3 process, ranging from 1 to 65535. The process ID defaults to 1.

Description

Use the ospfv3 command to enable an OSPFv3 process and enter OSPFv3 view.

Use the undo ospfv3 command to disable an OSPFv3 process.

The system runs no OSPFv3 process by default.

Related command: router-id.

& Note:

An OSPFv3 process can run normally only when Router ID is configured in OSPFv3 view. Otherwise, you can find the process, but which cannot generate any LSA.

Example

# Enable the OSPFv3 process with process ID as 120 and configure the Router ID as 1.1.1.1.

<Sysname> system-view

[Sysname] ospfv3 120

[Sysname-ospfv3-120] router-id 1.1.1.1

3.1.24 ospfv3 area

Syntax

ospfv3 process-id area area-id [ instance instance-id ]

undo ospfv3 process-id area area-id [ instance instance-id ]

View

Interface view

Parameter

process-id: Specifies the ID of an OSPFv3 process, ranging from 1 to 65535.

area-id: The ID of an area, a decimal integer (in the range of 0 to 4294967295) that is translated into IPv4 address format by the system or an IPv4 address.

instance-id: The instance ID of an interface, in the range of 0 to 255, which defaults to 0.

Description

Use the ospfv3 area command to enable an OSPFv3 process on the interface and specify the area for the process.

Use the undo ospfv3 area command to disable an OSPFv3 process.

OSPFv3 is not enabled on an interface by default.

Example

# Enable OSPFv3 process 1 on an interface that belongs to instance 1 and specify area 1 for the process.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ospfv3 1 area 1 instance 1

3.1.25 ospfv3 cost

Syntax

ospfv3 cost value [ instance instance-id ]

undo ospfv3 cost [ instance instance-id ]

View

Interface view

Parameter

value: OSPFv3 cost of the interface, in the range 1 to 65535.

instance-id: The instance ID of an interface, in the range of 0 to 255, which defaults to 0.

Description

Use the ospfv3 cost command to configure the OSPFv3 cost on an interface of an instance.

Use the undo ospfv3 cost command to restore the default OSPFv3 cost on an interface of an instance.

By default, the cost value defaults to 1.

Example

# Specifies the OSPFv3 cost as 33 on an interface of instance 1.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ospfv3 cost 33 instance 1

3.1.26 ospfv3 dr-priority

Syntax

ospfv3 dr-priority priority [ instance instance-id ]

undo ospfv3 dr-priority [ instance instance-id ]

View

Interface view

Parameter

priority: DR priority, in the range 0 to 255.

instance-id: ID of the instance an interface belongs to, in the range 0 to 255, which defaults to 0.

Description

Use the ospfv3 dr-priority command to set the DR priority for an interface of an instance.

Use the undo ospfv3 dr-priority command to restore the default value.

The DR priority on an interface defaults to 1

An interface’s DR priority determines its privilege for DR/BDR selection, and the interface with the highest priority is considered first.

Example

# Set the DR priority for an interface of instance 1 to 8 .

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ospfv3 dr-priority 8 instance 1

3.1.27 ospfv3 mtu-ignore

Syntax

ospfv3 mtu-ignore [ instance instance-id ]

undo ospfv3 mtu-ignore [ instance instance-id ]

View

Interface view

Parameter

instance-id: Instance ID, in the range 0 to 255, which defaults to 0.

Description

Use the ospfv3 mtu-ignore command to configure an interface to ignore MTU when sending DD packets.

Use the undo ospfv3 mtu-ignore command to restore the default configuration.

MTU is not ignored by default.

Example

# Configure an interface that belongs to instance 1 to ignore MTU.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ospfv3 mtu-ignore instance 1

3.1.28 ospfv3 timer dead

Syntax

ospfv3 timer dead seconds [ instance instance-id ]

undo ospfv3 timer dead [ instance instance-id ]

View

Interface view

Parameter

seconds: Dead time in seconds, ranging from 1 to 2,147,483,647,

instance-id: The instance ID of an interface, in the range of 0 to 255, which defaults to 0.

Description

Use the ospfv3 timer dead command to configure the OSPFv3 neighbor dead time for an interface that belongs to a specified instance.

Use the undo ospfv3 timer dead command to restore the default.

By default, the OSPFv3 neighbor dead time is 40 seconds.

OSPFv3 neighbor dead time: if an interface receives no hello packet from a neighbor after dead time elapses, the interface will considers the neighbor is dead.

The dead seconds value is at least four times the Hello seconds value and must be identical on interfaces attached to the same network segment.

Related command: ospfv3 timer hello.

Example

# Configure the OSPFv3 neighbor dead time as 80 seconds for an interface with instance 1.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ospfv3 timer dead 80 instance 1

3.1.29 ospfv3 timer hello

Syntax

ospfv3 timer hello seconds [ instance instance-id ]

undo ospfv3 timer hello [ instance instance-id ]

View

Interface view

Parameter

seconds: Interval between hello packets, ranging from 1 to 65,535.

instance-id: The instance ID of an interface, in the range of 0 to 255, which defaults to 0.

Description

Use the ospfv3 timer hello command to configure the hello interval for an interface that belongs to an instance.

Use the undo ospfv3 timer hello command to restore the default.

By default, the hello interval is 10 seconds.

Related command: ospfv3 timer dead.

Example

# Configure the hello interval as 20 seconds for an interface of instance 1.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ospfv3 timer hello 20 instance 1

3.1.30 ospfv3 timer retransmit

Syntax

ospfv3 timer retransmit interval [ instance instance-id ]

undo ospfv3 timer retransmit [ instance instance-id ]

View

Interface view

Parameter

interval: Specifies LSA retransmission interval in seconds for an interface, ranging from 1 to 65535.

instance-id: The instance ID of an interface, in the range of 0 to 255, which defaults to 0.

Description

Use the ospfv3 timer retransmit command to configure the LSA retransmission interval for an interface of an instance.

Use the undo ospfv3 timer retransmit command to restore the default.

The interval defaults to 5 seconds.

When a router sends a LSA to its neighbor, it waits for an acknowledgement. If receiving no acknowledgement after retransmission interval elapses, it will retransmit the LSA.

The LSA retransmission interval should not be too small for avoidance of unnecessary retransmissions.

Example

# Configure the LSA retransmission interval on an interface of instance 1 as 12 seconds.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ospfv3 timer retransmit 12 instance 1

3.1.31 ospfv3 trans-delay

Syntax

ospfv3 trans-delay seconds [ instance instance-id ]

undo ospfv3 trans-delay [ instance instance-id ]

View

Interface view

Parameter

seconds: Transmission delay time in seconds, ranging from 1 to 65,535.

instance-id: The instance ID of an interface, in the range of 0 to 255, with the default as 0.

Description

Use the ospfv3 trans-delay command to configure the transmission delay for an interface with an instance ID.

Use the undo ospfv3 trans-delay command to restore the default.

The transmission delay defaults to 1s.

As LSAs are aged in the LSDB (incremented 1 by each second) but not aged on transmission, it is necessary to add a delay time to the age time before sending a LSA. This configuration is important for low-speed networks.

Example

# Configure the transmission delay as 3 seconds for an interface of instance 1.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] ospfv3 trans-delay 3 instance 1

3.1.32 router-id

Syntax

router-id router-id

undo router-id

View

OSPFv3 view

Parameter

router-id: A 32-bit router ID, in IPv4 address format.

Description

Use the router-id command to configure the OSPFv3 router ID .

Use the undo router-id command to remove a configured router ID.

Router ID is the unique identification of an OSPF process in an autonomous system. An OSPFv3 process cannot run without a Router ID.

Make sure that different processes have different Router IDs.

Related command: ospfv3.

& Note:

By configuring different router IDs for different processes, you can run multiple OSPFv3 processes on a router.

Example

# Configure the Router ID as 10.1.1.3 for OSPFv3 process 1.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] router-id 10.1.1.3

3.1.33 silent-interface

Syntax

silent-interface { interface-type interface-number | all }

undo silent-interface { interface-type interface-number | all }

View

OSPFv3 view

Parameter

interface-type interface-number: Interface type and number

all: Specifies all interfaces.

Description

Use the silent-interface command to disable the specified interface from sending OSPFv3 packets.

Use the undo silent-interface command to restore the default.

An interface is able to send OSPFv3 packets by default.

Multiple processes can disable the same interface from sending OSPFv3 packets, but use of the silent-interface command takes effect only on interfaces enabled with the current process.

Example

# Disable an interface under OSPFv3 processes 100 and 200 from sending OSPFv3 packets.

<Sysname> system-view

[Sysname] ospfv3 100

[Sysname-ospfv3-100] router-id 10.110.1.9

[Sysname-ospfv3-100] silent-interface vlan-interface 10

[Sysname-ospfv3-100] quit

[Sysname] ospfv3 200

[Sysname-ospfv3-200] router-id 20.18.0.7

[Sysname-ospfv3-200] silent-interface vlan-interface 10

3.1.34 spf timers

Syntax

spf timers delay-interval hold-interval

undo spf timers

View

OSPFv3 view

Parameter

delay-interval: The interval in seconds between when OSPFv3 receives a topology change and when it starts SPF calculation, in the range 1 to 65,535.

hold-interval: The hold interval in seconds between two SPF calculations, in the range 1 to 65,535.

Description

Use the spf timers command to configure the delay interval and hold interval for OSPFv3 SPF calculation.

Use the undo spf timers command to restore the default.

The delay interval and hold interval default to 5s and 10s.

An OSPFv3 router works out a shortest path tree with itself as root based on the LSDB, and decides on the next hop to a destination network according the tree. Adjusting the SPF calculation interval can restrain bandwidth and router resource from over consumption due to frequent network changes.

Example

# Configure the delay interval and hold interval as 6 seconds for SPF calculation.

<Sysname> system-view

[Sysname]ospfv3 1

[Sysname-ospfv3-1] spf timers 6 6

3.1.35 stub

Syntax

stub [ no-summary ]

undo stub

View

OSPFv3 area view

Parameter

no-summary: This argument is only applicable to the ABR of a stub area. With it configured, the ABR advertises only a default route in a Summary-LSA to the stub area (such an area is called a totally stub area).

Description

Use the stub command to configure an area as a stub area.

Use the undo stub command to remove the configuration.

By default, an area is not configured as a stub area.

When an area is configured as a stub area, all the routers attached to the area must be configured with the stub command.

Related command: default-cost.

Example

# Configure OSPFv3 area 1 as a stub area.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] area 1

[Sysname-ospfv3-1-area-0.0.0.1] stub

3.1.36 vlink-peer

Syntax

vlink-peer router-id [ hello seconds | retransmit seconds | trans-delay seconds | dead seconds | instance instance-id ] *

undo vlink-peer router-id [ hello | retransmit | trans-delay | dead ]*

View

OSPFv3 area view

Parameter

router-id: Router ID for a virtual link neighbor.

hello seconds: Specifies the interval in seconds of sending Hello packets, ranging from 1 to 8,192, with the default as 10. This value must equal to the hello seconds configured on the virtual link peer router.

retransmit seconds: Specifies the interval in seconds of retransmitting LSA packets, ranging from 1 to 3,600, with the default as 5.

trans-delay seconds: Specifies the delay interval in seconds of sending LSA packets, ranging from 1 to 3,600, with the default as 1.

dead seconds: Specifies the neighbor dead time in seconds, ranging from 1 to 32,768, with the default as 40. This value must equal to the dead seconds configured on the virtual link peer router, and at least four times the value of hello seconds.

instance Instance-id: The instance ID of an virtual link, in the range of 0 to 255, with the default as 0.

Description

Use the vlink-peer command to create and configure a virtual link.

Use the undo vlink-peer command to remove a virtual link.

For a non-backbone area without direct connection with the backbone area or for a backbone area that cannot maintain connectivity, you can use the vlink-peer command to create logical connectivity. A virtual link can be considered as an interface with OSPFv3 enabled, because parameters such as hello, dead, retransmit and trans-delay are configured in the similar way.

Both ends of a virtual link are ABRs that are configured with the vlink-peer command.

Example

# Create a virtual link to 10.110.0.3.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] area 10.0.0.0

[Sysname-ospfv3-1-area-10.0.0.0] vlink-peer 10.110.0.3

Chapter 4 IPv6-IS-IS Configuration Commands

4.1 IPv6-IS-IS Configuration Commands

& Note:

l This chapter covers only the configuration commands specific to IPv6-IS-IS. For other related commands, see the IS-IS configuration part in the IPv4 Routing module.

l Verify that the system already operates in IPv4/IPv6 dual-stack mode before configuring IPv6 routing.

4.1.1 display isis route ipv6

Syntax

display isis route ipv6 [ [ level-1 | level-2 ] | verbose ]* [ process-id ]

View

Any view

Parameter

verbose: Specifies to display detailed routing information.

process-id: Species an IPv6-IS-IS process ID.

level-1: Specifies to display Level-1 IPv6-IS-IS route.

level-2: Specifies to display Level-2 IPv6-IS-IS route.

& Note:

If no level is specified, both Level-1 and Level-2 (namely Level-1-2) routing information will be displayed by default.

Description

Use the display isis route ipv6 command to display IPv6-IS-IS routing information.

Example

# Display IPv6-IS-IS routing information.

<Sysname> display isis route ipv6

Route information for ISIS(1)

-----------------------------

ISIS(1) IPv6 Level-1 Forwarding Table

-------------------------------------

Destination: 2001:: PrefixLen: 64

Flag : R/L/- Cost : 10

Next Hop : Direct Interface: Vlan100

Destination: 2002:: PrefixLen: 64

Flag : R/L/- Cost : 20

Next Hop : FE80::20F:E2FF:FE1D:A65B Interface: Vlan100

Flags: R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set

Table 4-1 Description on the fields of the display isis route ipv6 command

Field	Description
Destination	IPv6 destination address
PrefixLen	Length of a prefix
Flag/Flags	Flag of routing information status R: The route has been recorded in the routing table. L: The route has been advertised through LSP. U: The flag of routing penetration status, indicating the Level-1 route is from the Level-2 one. You can avoid returning the Level-2 LSP that is sent to Level-1 back to Level-2.
Cost	Value of cost
Next Hop	Next hop
Interface	Exit interface

# Display detailed IPv6-IS-IS routing information.

<Sysname> display isis route ipv6 verbose

Route information for ISIS(1)

-----------------------------

ISIS(1) IPv6 Level-1 Forwarding Table

-------------------------------------

IPV6 Dest : 2001:1::/64 Cost : 10 Flag : R/L/-

Preference : 15 Admin Tag : -

Interface : Vlan100 Next Hop : Direct

IPV6 Dest : 2001:2::/64 Cost : 20 Flag : R/-/-

Preference : 15 Admin Tag : -

Interface : Vlan100 Next Hop : FE80::2E0:FCFF:FE00:242A

IPV6 Dest : 2001:3::/64 Cost : 20 Flag : R/-/-

Preference : 15 Admin Tag : -

Interface : Vlan100 Next Hop : FE80::2E0:FCFF:FE00:242A

IPV6 Dest : ::/0 Cost : 10 Flag : R/-/-

Preference : 15 Admin Tag : -

Interface : Vlan100 Next Hop : FE80::2E0:FCFF:FE00:242A

Flags: R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set

Table 4-2 Description on the fields of the display isis route ipv6 verbose command

Field	Description
IPV6 Dest	IPv6 destination address
Cost	Value of cost
Flag/Flags	Flag of routing information status R: The route has been recorded in the routing table. L: The route has been advertised through LSP. U: The flag of routing penetration status, indicating the Level-1 route is from the Level-2 one. You can avoid returning the Level-2 LSP that is sent to Level-1 back to Level-2.
Preference	Preference of protocols
Admin Tag	Administration tag
Interface	Exit interface
Next Hop	Next hop

4.1.2 ipv6 default-route-advertise

Syntax

ipv6 default-route-advertise [ [ level-1 | level-2 | level-1-2 ] | route-policy route-policy-name ]*

undo ipv6 default-route-advertise [ route-policy route-policy-name ]

View

IS-IS view

Parameter

route-policy-name: Specifies the route policy name with a string of 1 to 19 characters.

level-1: Specifies the default route as Level-1.

level-2: Specifies the default route as Level-2.

level-1-2: Specifies the default route as Level-1-2.

& Note:

If no level is specified, the Level-2 routes are taken as the default routes.

Description

Use the ipv6 default-route-advertise command to specify a router to generate Level-1 or Level-2 default routes.

Use the undo ipv6 default-route-advertise command to disable this function.

This function is disabled by default.

With a routing policy, you can specify IPv6-IS-IS to generate default routes only when there is matching routing entries in the routing table. You can use the apply isis level-1 command in routing policy view to generate default route in L1 LSP, use the apply isis level-2 command in routing policy view to generate default route in L2 LSP, and use the apply isis level-1-2 in routing policy view to generate default route in L1 LSP and L2 LSP respectively.

Example

# Configure the router to generate a default route in Level-2 LSPs..

<Sysname> system-view

[Sysname] isis

[Sysname-isis-1] ipv6 default-route-advertise

4.1.3 ipv6 enable

Syntax

ipv6 enable

undo ipv6 enable

View

IS-IS view

Parameter

None

Description

Use the ipv6 enable command to enable IPv6 in an IS-IS process.

Use the undo ipv6 enable command to disable this configuration.

IPv6 is disabled in the IS-IS process by default.

To run IPv6-IS-IS protocol normally, you need enable IPv6 globally, and use the isis command to enable the IS-IS process, use the network–entity to configure a network entity title (NET) for the router, use the ipv6 enable command to enable IPv6, and then use the isis ipv6 enable command to enable each interface that needs to run IPv6-IS-IS process (ipv6 address is required).

Only after finishing these configurations, can you enable an IPv6-IS-IS protocol.

Example

# Establish IS-IS routing process 1, and enable IPv6 for the process.

<Sysname> system-view

[Sysname] ipv6

[Sysname] isis 1

[Sysname-isis-1] network-entity 10.0001.1010.1020.1030.00

[Sysname-isis-1] ipv6 enable

4.1.4 ipv6 filter-policy export

Syntax

ipv6 filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name | route-policy route-policy-name } export [ protocol process-id ]

undo ipv6 filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name | route-policy route-policy-name } export [ protocol process-id ]

View

IS-IS view

Parameter

acl-number: Number of a basic or advanced IPv6 ACL used to filter redistributed routes before advertisement, ranging from 2000 to 3999.

ipv6-prefix-name: Name of an IPv6 prefix list used to filter the redistributed routes before advertisement, a string of 1 to 19 characters.

route-policy-name: Name of a routing policy used to filter the redistributed routes before advertisement, a string of 1 to 19 characters.

protocol: Specifies the imported routing information to be filtered at the time of advertising, including the information of processes such as bgp4+, direct, isisv6, ospfv3, ripng and static at present. If no parameter is specified, the system will filter all the routing information advertised.

process-id: Specifies a process id for a routing protocol, ranging from 1 to 65535. This parameter is available when the protocol is isisv6, ospfv3 or ripng.

Description

Use the ipv6 filter-policy export command to configure IPv6-IS-IS to filter redistributed routes before advertisement..

Use the undo ipv6 filter-policy export command to disable the filtering.

The filtering is disabled by default.

In some circumstances, only the routing information satisfying certain conditions will be advertised. You can configure the filtering condition by configuring the ipv6 filter-policy parameters.

You can use the ipv6 filter-policy export command, which filter the imported routes only when they are advertised to other routers, together with the ipv6 import-route command.

l If no protocol parameter is specified, routes imported from all protocols are filtered.

l If the protocol parameter is specified, only the routes imported from the specific protocols are filtered.

Related command: ipv6 filter-policy import.

Example

# Reference the ACL6 2006 to filter all the redistributed routes before advertisement.

<Sysname> system-view

[Sysname] isis

[Sysname-isis-1] ipv6 filter-policy 2006 export

4.1.5 ipv6 filter-policy import

Syntax

ipv6 filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name | route-policy route-policy-name } import

undo ipv6 filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name | route-policy route-policy-name } import

View

IS-IS view

Parameter

acl-number: Number of a basic or advanced IPv6 ACL used to filter incoming routes, ranging from 2000 to 3999.

ipv6-prefix-name: Name of an IPv6 prefix list used to filter incoming routes, a string of 1 to 19 characters.

route-policy-name: Name of a routing policy used to filter incoming routes, a string of 1 to 19 characters.

Description

Use the ipv6 filter-policy import command to enable IPv6-IS-IS filter the received routes.

Use the undo ipv6 filter-policy import command to disable filter the received routes.

IPv6-IS-IS does not filter the received routing information by default.

In some circumstances, only the routing information satisfying certain conditions will be received. You can configure the filtering condition by setting the ipv6 filter-policy parameters.

Related command: ipv6 filter-policy export.

Example

# Reference the IPv6 ACL 2003 to filter the received routes.

<Sysname> system-view

[Sysname] isis

[Sysname-isis-1] ipv6 filter-policy 2003 import

4.1.6 ipv6 import-route

Syntax

undo ipv6 import-route protocol [ process-id ]

View

IS-IS view

Parameter

protocol: Specifies the routing protocol to be imported, including direct, static, ripng, isisv6, bgp4+ and ospfv3.

process-id: Process ID of the routing protocol of ripng, isisv6 or ospfv3, in the range of 1 to 65535. The default is 1.

cost value: Specifies the routing cost of the imported routes, ranging from 0 to 4261412864.

level-1: Specifies to import routes to Level-1 routing table.

level-2: Specifies to import routes to Level-2 routing table. If no level is specified, the routes are imported to Level-2 routing table by default.

level-1-2: Specifies to import routes to Level-1-2 routing table.

route-policy-name: Name of a routing policy used to filter routes when they are being redistributed, a string of 1 to 19 characters.

tag-value: Specifies a administration tag number for the imported routes, in the range of 1 to 4294967295.

allow-ibgp: Allows to redistribute IBGP routes. This keyword is optional when the protocol is bgp4+.

Description

Use the ipv6 import-route command to enable IPv6-IS-IS import routing information from other protocols.

Use the undo ipv6 import-route command to disable IPv6-IS-IS import routing information from other protocols.

IPv6-IS-IS does not import routing information from other protocols by default.

For IPv6-IS-IS, the routes found by other routing protocol are dealt as routes outside of the routing domain. When importing IPv6 routes from other protocol, you can also specify the default cost for the imported routes.

When IPv6-IS-IS imports routes, you can specify the routes to be imported to Level-1, Level-2 or Level-1-2.

Caution:

Using the import-route bgp4+ allow-ibgp command will redistribute both EBGP and IBGP routes. The redistributed IBGP routes may cause routing loops. Therefore, use this command with caution.

Example

# IPv6–IS-IS imports static routes and sets the cost value as 15.

<Sysname> system-view

[Sysname] isis

[Sysname-isis-1]ipv6 import-route static cost 15

4.1.7 ipv6 import-route isisv6 level-2 into level-1

Syntax

ipv6 import-route isisv6 level-2 into level-1 [ filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name | route-policy route-policy-name } | tag tag-value ]*

undo ipv6 import-route isisv6 level-2 into level-1

View

IS-IS view

Parameter

acl6-number: Number of a basic or advanced ACL6 used to filter routes when they are leaking from Level-2 to Level-1, ranging from 2000 to 3999.

ipv6-prefix-name: Name of an IPv6 prefix list used to filter routes when they are leaking from Level-2 to Level-1, a string of 1 to 19 characters.

route-policy-name: Name of a routing policy used to filter routes when they are leaking from Level-2 to Level-1, a string of 1 to 19 characters.

tag-value: Specifies a administration tag number for the imported routes, in the range of 1 to 4294967295.

Description

Use the ipv6 import-route isisv6 level-2 into level-1 to enable IPv6-IS-IS route leaking from Level-2 to Level-1.

Use the undo ipv6 import-route isisv6 level-2 into level-1 command to disable the leaking.

The leaking is disabled by default.

The route leaking feature enables a Level-1-2 router to advertise routes destined to the Level-2 area and other Level-1 areas to the Level-1 and Level-1-2 routers in the local area.

Example

# Set the router to penetrate routes from Level-2 to Level-1.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] ipv6 import-route isisv6 level-2 into level-1

4.1.8 ipv6 maximum load-balancing

Syntax

ipv6 maximum load-balancing number

undo ipv6 maximum load-balancing

View

IS-IS view

Parameter

number: Specifies the number of equivalent routes under load-balancing mode, ranging from 1 to 4, with the default as 4.

Description

Use the ipv6 maximum load-balancing command to configure the maximum number of equivalent routes under load-balancing mode. Use the undo ipv6 maximum load-balancing command to resume the default number of load-balancing routing.

& Note:

Configure the maximum number of equivalent routes according to memory capacity.

Example

# Configure the maximum number of load-balancing routing as 2.

<Sysname> system-view

[Sysname] isis 100

[Sysname-isis-100] ipv6 maximum load-balancing 2

4.1.9 ipv6 preference

Syntax

ipv6 preference { route-policy route-policy-name | preference-value }*

undo ipv6 preference

View

IS-IS view

Parameter

preference-value: Preference for IPv6-IS-IS, ranging from 1 to 255..

route-policy-name: Name of a routing policy, a string of 1 to 19 characters..

Description

Use the ipv6 preference command to configure the preference for IPv6-IS-IS protocol.

Use the undo ipv6 preference command to configure the default preference for IPv6-IS-IS protocol.

The default preference is 15.

When a router runs multiple dynamic routing protocols at the same time, the system will configure a preference for each routing protocol. If several protocols find routes to the same destination, the one with the highest preference dominates.

Example

# Configure the preference of IPv6-IS-IS protocol as 20.

<Sysname> system-view

[Sysname] isis

[Sysname-isis-1] ipv6 preference 20

4.1.10 ipv6 summary

Syntax

undo ipv6 summary ipv6-prefix prefix-length [ level-1 | level-1-2 | level-2 ]

View

IS-IS view

Parameter

ipv6-prefix: IPv6 prefix of the summary route.

prefix-length: Length of the IPv6 prefix, in the range of 0 to 128.

avoid-feedback: Specifies to avoid learning summary routes via routing calculation.

generate_null0_route: Generates the NULL 0 route to avoid routing loops.

level-1: Specifies to summarize only the routes redistributed to Level-1 area.

level-1-2: Specifies to summarize all the routes redistributed to Level-1 and Level-2 areas.

level-2: Specifies to summarize only the routes redistributed to Level-2 area.

tag-value: Value of a administrative tag, in the range of 1 to 4294967295.

& Note:

If no level is specified in the command, the default is level-2.

Description

Use the ipv6 summary command to configure an IPv6-IS-IS summary route.

Use the undo ipv6 summary command to remove the summary route.

Route summarization is disabled by default.

Configuring summary routes can reduce the size of the route table, LSPs and LSDB. Routes to be summarized can be IS-IS routes or redistributed routes. The cost of a summary route is the smallest cost among all summarized routes.

Example

# Configure a summary route of 2002::/32.

<Sysname> system-view

[Sysname] isis

[Sysname-isis-1] ipv6 summary 2002:: 32

4.1.11 isis ipv6 enable

Syntax

isis ipv6 enable [ process-id ] [ silent ]

undo isis ipv6 enable

View

Interface view

Parameter

silent: Specifies to restrain the interface to send or receive IS-IS hello packets.

process-id: Specifies a IS-IS process id, ranging from 1 to 65535. If no value is specified, the default process 1 is enabled.

Description

Use the isis ipv6 enable command to enable IPv6 for IS-IS routing process on a interface and specify the related IS-IS process ID. After the command is performed successfully, the interface will be related with the IS-IS process. Use the undo isis ipv6 enable command to disable this configuration.

IPv6 is disabled in the IS-IS process of the interface by default.

To run IPv6-IS-IS protocol, you need to enable IPv6 globally, and use the isis command to enable the IS-IS process, use the network–entity command to configure a Network Entity Title (NET) for the router, use the ipv6 enable command to enable IPv6 for the process, and then use the isis ipv6 enable command to enable IPv6 on each interface that needs to run the IS-IS process. (IPv6 addresses should be configured for interfaces.)

Example

# Create IS-IS routing process 1 to enable IPv6 on the VLAN 100 interface.

<Sysname> system-view

[Sysname] ipv6

[Sysname] isis 1

[Sysname-isis-1] network-entity 10.0001.1010.1020.1030.00

[Sysname-isis-1] ipv6 enable

[Sysname-isis-1] quit

[Sysname] interface Vlan-interface 100

[Sysname--Vlan-interface100] ipv6 address 2002::1/64

[Sysname--Vlan-interface100] isis ipv6 enable 1

Chapter 5 IPv6-BGP4+ Configuration Commands

& Note:

l Verify that the system already operates in IPv4/IPv6 dual-stack mode before configuring IPv6 routing.

5.1 BGP4+ Configuration Commands

5.1.1 balance

Syntax

balance number

undo balance

View

IPv6 address family view

Parameter

number: Number of BGP4+ routes participating in load balancing. in the range 1 to 4 . When it is set to 1, load balancing is disabled.

Description

Use the balance command to configure the number of routes participating in BGP4+ load balancing.

Use the undo balance command to restore the default.

The feature is not available by default.

Unlike IGP, BGP4+ has no explicit metric for making load balancing decision. Instead, it implements load balancing by defining its routing rule.

Related command: display ipv6 routing-table.

Example

# Set the number of routes participating in BGP4+ load balancing to 2.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] balance 2

5.1.2 bestroute as-path-neglect

Syntax

bestroute as-path-neglect

undo bestroute as-path-neglect

View

IPv6 address family view

Parameter

None

Description

Use the bestroute as-path-neglect command to ignore AS_PATH in route selection.

Use the undo bestroute as-path-neglect command to use AS_PATH in route selection.

By default, the router takes AS_PATH as a factor when selecting a route.

Example

# Ignore AS_PATH in route selection.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] bestroute as-path-neglect

5.1.3 bestroute compare-med

Syntax

bestroute compare-med

undo bestroute compare-med

View

IPv6 address family view

Parameter

None

Description

Use the bestroute compare-med command to prioritize MED values of paths from each AS for best path selection.

Use the undo bestroute compare-med command to disable this function.

This function is not available by default.

Example

# Prioritize MED values of routes from each AS for selecting the best route.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] bestroute compare-med

5.1.4 bestroute med-confederation

Syntax

bestroute med-confederation

undo bestroute med-confederation

View

IPv6 address family view

Parameter

None

Description

Use the bestroute med-confederation command to prioritize MED values of routes from confederation peers.

Use the undo bestroute med-confederation command to disable the function.

By default, this function is not available.

The system only prioritizes MED values of routes from peers within the confederation. Routes from external ASs are advertised throughout the confederation without MED comparison.

Example

# Prioritize MED values of routes from peers within the confederation.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] bestroute med-confederation

5.1.5 compare-different-as-med

Syntax

compare-different-as-med

undo compare-different-as-med

View

IPv6 address family view

Parameter

None

Description

Use the compare-different-as-med command to enable comparison of MED values of routes from peers in different ASs when determining the best route.

Use the undo compare-different-as-med command to disable the comparison.

The comparison is disabled by default.

If there are several paths available for one destination, the path with the smallest MED value is selected.

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

Example

# Compare MED values of routes from peers in different ASs.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] compare-different-as-med

5.1.6 dampening

Syntax

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

undo dampening

View

IPv6 address family view

Parameter

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

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

reuse: Specifies the reuse threshold value for suppressed routes, in the range 1 to 20,000. Penalty value of a suppressed route decreasing under the value is reused. By default, its value is 750.

suppress: Specifies the suppression threshold for routes in the range 1 to 20,000, which should be bigger than reuse. Routes with penalty value bigger than the threshold are suppressed. By default, it is 2,000.

ceiling: Specifies the ceiling penalty value, in the range 1001 to 20,000. The value must be bigger than suppress value. By default, the value is 16,000.

route-policy-name: Routing policy name, a string of 1 to 19 characters.

half-life-reachable, half-life-unreachable, reuse, suppress and ceiling are mutually dependent. Once any one is configured, all others should also be specified accordingly.

Description

Use the dampening command to enable BGP4+ route dampening or/and configure dampening parameters.

Use the undo dampening command to disable route dampening.

By default, no route dampening is configured.

Related command: reset bgp ipv6 dampening, reset bgp ipv6 flap-info, display bgp ipv6 routing-table dampened, display bgp ipv6 routing-table dampening parameter and display bgp ipv6 routing-table flap-info.

Example

# Enable BGP4+ route dampening and configure route dampening parameters.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] dampening 10 10 1000 2000 3000

5.1.7 default local-preference

Syntax

default local-preference value

undo default local-preference

View

IPv6 address family view

Parameter

value: Default local preference, in the range 0 to 4294967295. The larger the value is, the higher the preference is.

Description

Use the default local-preference command to configure default local preference.

Use the undo default local-preference command to restore the default value.

By default, the default local preference is 100.

Use this command to affect BGP4+ route selection.

Example

# Two devices A and B in the same AS are connected to another AS. Change the local preference of B from default value 100 to 180, making the route via B preferred.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] default local-preference 180

5.1.8 default med

Syntax

default med med-value

undo default med

View

IPv6 address family view

Parameter

med-value: Default MED value, in the range 0 to 4294967295.

Description

Use the default med command to configure the default MED value.

Use the undo default med command to restore the default.

By default, the med-value is 0.

Multi-exit discriminator (MED) is an external metric for routes. Different from local preference, MED is exchanged between ASs and will stay in the AS once it enters the AS. The smaller an MED is, the better a route is. So the route with a lower MED is preferred. When a router running BGP obtains several routes with identical destination address and different next-hops from various external peers, it will select the best route depending on the MED value. In the case that all other conditions are the same, the system first selects the route with the smaller MED value as the external route of the autonomous system.

Example

# Devices A and B belong to AS100 and device C belongs to AS200. C is A and B’s peer. Configure the MED of A as 25 to make C select the path from B first.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] default med 25

5.1.9 default-route imported

Syntax

default-route imported

undo default-route imported

View

IPv6 address family view

Parameter

None

Description

Use the default-route imported command to redistribute local default routes into the BGP4+ routing table.

Use the undo default-route imported command to disable the redistribution.

By default, local default routes are not redistributed into BGP4+ routing table.

Example

# Redistribute default routes from OSPFv3 into BGP4+.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] default-route imported

[Sysname-bgp-af-ipv6] import-route ospfv3 1

5.1.10 display bgp ipv6 group

Syntax

display bgp ipv6 group [ ipv6-group-name ]

View

Any view

Parameter

ipv6-group-name: Peer group name, a string of 1 to 47 characters.

Description

Use the display bgp ipv6 group command to display IPv6 peer group information.

If no ipv6-group-name specified, information about all peer groups is displayed.

Example

# Display the information of the IPv6 peer group "aaa".

<Sysname> display bgp ipv6 group aaa

BGP peer-group is aaa

remote AS number not specified

Type : external

Maximum allowed prefix number: 4294967295

Threshold: 75%

Configured hold timer value: 180

Keepalive timer value: 60

Minimum time between advertisement runs is 30 seconds

Peer Preferred Value: 0

No routing policy is configured

Members:

Peer V AS MsgRcvd MsgSent OutQ PrefRcv Up/Down State

20:20::20:1 4 200 170 141 0 2 02:13:35 Established

Table 5-1 Description on the fields of the display bgp ipv6 group command

Field	Description
BGP peer-group	Name of the peer group
remote AS	AS number of the peer group
Type	Type of the peer group
Maximum allowed prefix number	Maximum allowed prefix number
Threshold	Threshold value
hold timer value	Holdtime
Keepalive timer value	Keepalive interval
Minimum time between advertisement runs	Minimum interval between advertisements
Peer Preferred Value	Preferred value of the routes from the peer
No routing policy is configured	No routing policy is configured for the peer
Members	Group members
Peer	IPv6 address of the peer
V	Peer BGP version
AS	AS number
MsgRcvd	Number of messages received
MsgSent	Number of messages sent
OutQ	Number of messages to be sent
PrefRcv	Number of prefixes received
Up/Down	The lasting time of a session/the lasting time of present state (when no session is established)
State	State machine of peer

5.1.11 display bgp ipv6 network

Syntax

display bgp ipv6 network

View

Any view

Parameter

None

Description

Use the display bgp ipv6 network command to display IPv6 routing information advertised by BGP4+ using the network command.

Example

# Display the IPv6 routing information advertised by BGP4+ using the network command..

<Sysname> display bgp ipv6 network

BGP Local Router ID is 1.1.1.1.

Local AS Number is 100.

Network Prefix Route-policy Short-cut

1:: 64

Table 5-2 Description on the fields of the display bgp ipv6 network command

Field	Description
BGP Local Router ID	BGP Local Router ID
Local AS Number	Local AS Number
Network	Network address
Prefix	Prefix length
Route-policy	Routing policy
Short-cut	Shortcut route

5.1.12 display bgp ipv6 paths

Syntax

display bgp ipv6 paths [ as-regular-expression ]

View

Any view

Parameter

as-regular-expression: Matched AS path regular expression.

Description

Use the display bgp ipv6 paths command to display AS_PATH attribute information of BGP4+ routes.

If no parameter specified, all AS_PATH information will be displayed.

Example

# Display AS_PATH attribute information of BGP4+ routes.

<Sysname> display bgp ipv6 paths

Address Hash Refcount MED Path/Origin

0x5917098 1 1 0 i

0x59171D0 9 2 0 100i

Table 5-3 Description on the fields of the display bgp ipv6 paths command

Field	Description
Address	Route address in local database, in dotted hexadecimal notation
Hash	Hash index
Refcount	Count of routes that referenced the path
MED	MED of the route
Path	AS_PATH attribute of a route, recording the ASs a route has passed, for avoiding routing loops
Origin	Origin attribute of the route, which can take on one of the following values:
	i	Indicates the route is interior to the AS. Summary routes and routes defined using the network command are considered IGP routes.
	e	Indicates that a route is learned from the exterior gateway protocol (EGP).
	?	Short for INCOMPLETE. It indicates that the origin of a route is unknown and the route is learned by other means. BGP sets Origin attribute of routes learned from other IGP protocols to INCOMPLETE.

5.1.13 display bgp ipv6 peer

Syntax

display bgp ipv6 peer [ ipv6-address { log-info | verbose } | ipv6-group-name log-info | verbose ]

View

Any view

Parameter

ipv6-address: Specifies the IPv6 address of a peer to be displayed.

Ipv6-group-name: Name of a peer group to be displayed, a string of 1 to 47 characters.

log-info: Displays log information of the specified peer.

verbose: Displays the detailed information of the peer.

Description

Use the display bgp ipv6 peer command to display peer/peer group information.

If no parameter specified, information about all peers and peer groups is displayed.

Example

# Display all IPv6 peer information.

<Sysname> display bgp ipv6 peer

BGP local router ID : 200.1.3.1

Local AS number : 10

Total number of peers : 3 Peers in established state : 0

Peer V AS MsgRcvd MsgSent OutQ PrefRcv Up/Down State

1::1 4 10 0 0 0 0 04:23:22 Active

1::2 4 1 0 0 0 0 04:21:51 Active

1::4 4 10 0 0 0 0 04:06:29 Active

Table 5-4 Description on the fields of the display bgp ipv6 peer command

Field	Description
Peer	IPv6 address of the peer
V	Peer BGP version
AS	AS number
MsgRcvd	Messages received
MsgSent	Messages sent
OutQ	Messages to be sent
PrefRcv	Number of prefixes received
Up/Down	The lasting time of a session/the lasting time of present state (when no session is established)
State	Peer state

5.1.14 display bgp ipv6 routing-table

Syntax

display bgp ipv6 routing-table [ ipv6-address prefix-length ]

View

Any view

Parameter

ipv6-address: Destination IPv6 address.

prefix-length: Prefix length of the IPv6 address, in the range 0 to 128.

Description

Use the display bgp ipv6 routing-table command to display BGP4+ routing table information.

Example

# Display BGP4+ routing table information.

<Sysname> display bgp ipv6 routing-table

Total Number of Routes: 2

BGP Local router ID is 30.30.30.1

Status codes: * - valid, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

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

*> Network : 30:30:: PrefixLen : 64

NextHop : 30:30::30:1 LocPrf :

PrefVal : 0 Label : NULL

MED : 0

Path/Ogn: i

*> Network : 40:40:: PrefixLen : 64

NextHop : 40:40::40:1 LocPrf :

PrefVal : 0 Label : NULL

MED : 0

Path/Ogn: i

Table 5-5 Description on the fields of the display bgp ipv6 routing-table command

Field	Description
Local router ID	Local router ID
Status codes	Status codes: * – valid > – best d – damped h – history i – internal (IGP) s – summary suppressed (suppressed) S – Stale
Origin	i – IGP (originated in the AS) e – EGP (learned through EGP) ? – incomplete (learned by other means)
Network	Destination network address
PrefixLen	Prefix length
NextHop	Next Hop
MED	MULTI_EXIT_DISC attribute
LocPrf	Local preference value
Path	AS_PATH attribute, recording the ASs the packet has passed to avoid routing loops
PrefVal	Preferred value
Label	Label
Ogn	Origin attribute of the route, which can take on one of the following values:
	i	Indicates that a route is interior to the AS. Summary routes and the routes configured using the network command are considered IGP routes.
	e	Indicates that a route is learned from the exterior gateway protocol (EGP).
	?	Short for INCOMPLETE. It indicates that the origin of a route is unknown and the route is learned by other means. BGP sets Origin attribute of routes learned from other IGP protocols to INCOMPLETE.

5.1.15 display bgp ipv6 routing-table as-path-acl

Syntax

display bgp ipv6 routing-table as-path-acl as-path-acl-number

View

Any view

Parameter

as-path-acl-number: Number of an AS path ACL matched by which to display routing information, ranging from 1 to 256.

Description

Use the display bgp ipv6 routing-table as-path-acl command to view routes that match an AS path ACL.

Example

# Display routes that match the AS path ACL 20.

<Sysname> display bgp ipv6 routing-table as-path-acl 20

BGP Local router ID is 30.30.30.1

Status codes: * - valid, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

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

*> Network : 30:30:: PrefixLen : 64

NextHop : 30:30::30:1 LocPrf :

PrefVal : 0 Label : NULL

MED : 0

Path/Ogn: i

Refer to Table 5-5 for description on the fields above.

5.1.16 display bgp ipv6 routing-table community

Syntax

display bgp ipv6 routing-table community [ aa:nn&<1-13> ] [ no-advertise | no-export | no-export-subconfed ]* [ whole-match ]

View

Any view

Parameter

aa:nn: Specifies a community number, both aa and nn are in the range 0 to 65535.

&<1-13>: Specifies the argument before it can be entered up to 13 times.

no-advertise: Displays routes that are not advertised to any peer.

no-export: Displays routes that are not advertised outside the AS, if there is a confederation, then not advertised outside the confederation, but to other sub ASs in the confederation.

no-export-subconfed: Displays routes that are neither advertised outside the AS nor to other sub ASs if confederation configured.

whole-match: Displays the exactly matched routes.

Description

Use the display bgp ipv6 routing-table community command to display specified community routing information in the routing table.

Example

# Display no-export community routing information.

<Sysname> display bgp ipv6 routing-table community no-export

BGP Local router ID is 30.30.30.1

Status codes: * - valid, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

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

*> Network : 30:30:: PrefixLen : 64

NextHop : 30:30::30:1 LocPrf :

PrefVal : 0 Label : NULL

MED : 0

Path/Ogn: i

Refer to Table 5-5 for description on the fields above.

5.1.17 display bgp ipv6 routing-table community-list

Syntax

display bgp ipv6 routing-table community-list { basic-community-list-number [ whole-match ] | adv-community-list-number }&<1-16>

View

Any view

Parameter

basic-community-list-number: Specifies a basic community-list number, in the range 1 to 99.

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

whole-match: Displays routes exactly matching the specified basic-community-list-number.

&<1-16>: Specifies to allow entering the argument before it up to 16 times.

Description

Use the display bgp ipv6 routing-table community-list command to view the routing information matching the specified BGP4+ community list.

Example

# Display the routing information matching the specified BGP4+ community list.

<Sysname> display bgp ipv6 routing-table community-list 99

BGP Local router ID is 30.30.30.1

Status codes: * - valid, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

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

*> Network : 30:30:: PrefixLen : 64

NextHop : 30:30::30:1 LocPrf :

PrefVal : 0 Label : NULL

MED : 0

Path/Ogn: i

Refer to Table 5-5 for description on the fields above.

5.1.18 display bgp ipv6 routing-table dampened

Syntax

display bgp ipv6 routing-table dampened

View

Any view

Parameter

None

Description

Use the display bgp ipv6 routing-table dampened command to view BGP4+ dampened routes.

Example

# Display BGP4+ dampened routes.

<Sysname> display bgp ipv6 routing-table dampened

BGP Local router ID is 1.1.1.1

Status codes: * - valid, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

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

*d Network : 111:: PrefixLen : 64

From : 122::1 Reuse : 00:29:34

Path/Ogn: 200?

Table 5-6 Description on the fields of the display bgp ipv6 routing-table dampened command

Field	Description
From	Source IP address of a route
Reuse	Reuse time value

Refer to Table 5-5 for description on the fields above.

5.1.19 display bgp ipv6 routing-table dampening parameter

Syntax

display bgp ipv6 routing-table dampening parameter

View

Any view

Parameter

None

Description

Use the display bgp ipv6 routing-table dampening parameter command to display BGP4+ route dampening parameters.

Related command: dampening.

Example

# Display BGP4+ route dampening parameters.

<Sysname> display bgp ipv6 routing-table dampening parameter

Maximum Suppress Time(in second) : 3069

Ceiling Value : 16000

Reuse Value : 750

HalfLife Time(in second) : 900

Suppress-Limit : 2000

Table 5-7 Description on the above fields

Field	Description
Maximum Suppress Time	Maximum Suppress Time
Ceiling Value	Upper limit of penalty value
Reuse Value	Reuse Value
HalfLife Time	Half life Time
Suppress-Limit	Limit for a route to be suppressed

5.1.20 display bgp ipv6 routing-table different-origin-as

Syntax

display bgp ipv6 routing-table different-origin-as

View

Any view

Parameter

None

Description

Use the display bgp ipv6 routing-table different-origin-as command to view routes originating from different autonomous systems.

Example

# Display routes from different ASs.

<Sysname> display bgp ipv6 routing-table different-origin-as

BGP Local router ID is 2.2.2.2

Status codes: * - valid, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

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

*> Network : 222:: PrefixLen : 64

NextHop : 122::2 LocPrf :

PrefVal : 0 Label : NULL

MED : 0

Path/Ogn: 100 ?

Refer to Table 5-5 for description on the fields above.

5.1.21 display bgp ipv6 routing-table flap-info

Syntax

display bgp ipv6 routing-table flap-info [ regular-expression as-regular-expression | as-path-acl as-path-acl-number | ipv6-address [ prefix-length [ longer-match ] ] ]

View

Any view

Parameter

as-regular-expression: AS path regular expression to be matched.

as-path-acl-number: Number of the specified AS path ACL to be matched, ranging from 1 to 256.

ipv6-address: IPv6 address of a route to be displayed.

prefix-length: Prefix length of the IPv6 address, in the range 1 to 128.

longer-match: Matches the longest prefix.

Description

Use the display bgp ipv6 routing-table flap-info command to display BGP4+ route flap statistics.

Example

# Display BGP4+ route flap statistics.

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

BGP Local router ID is 1.1.1.1

Status codes: * - valid, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

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

*d Network : 111:: PrefixLen : 64

From : 122::1 Flaps : 3

Duration : 00:13:47 Reuse : 00:16:36

Path/Ogn : 200?

Table 5-8 Description on the fields of the display bgp ipv6 routing-table flap-info command

Field	Description
Flaps	Number of flaps
Duration	Flap duration
Reuse	Reuse time of the route

Refer to Table 5-5 for description on the fields above.

5.1.22 display bgp ipv6 routing-table label

Syntax

display bgp ipv6 routing-table label

View

Any view

Parameter

None

Description

Use the display bgp ipv6 routing-table label command to display BGP4+ IPv6 label routing information.

& Note:

Currently, the S3610&S5510 series do not support this command.

Example

Currently, the S3610&S5510 series do not support this command.

5.1.23 display bgp ipv6 routing-table peer

Syntax

display bgp ipv6 routing-table peer ipv6-address { advertised-routes | received-routes } [ network-address prefix-length | statistic ]

View

Any view

Parameter

ipv6-address: Specifies the peer to be displayed.

advertised-routes: Routing information advertised to the specified peer.

received-routes: Routing information received from the specified peer.

network-address prefix-length: IPv6 address, with prefix length ranging from 0 to 128.

statistic: Displays route statistics.

Description

Use the display bgp ipv6 routing-table peer command to view the routing information advertised to or received from specified BGP peer.

Example

# Display the routing information advertised to the specified BGP peer.

<Sysname> display bgp ipv6 routing-table peer 10:10::10:1 advertised-routes

Total Number of Routes: 2

BGP Local router ID is 20.20.20.1

Status codes: * - valid, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

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

*> Network : 20:20:: PrefixLen : 64

NextHop : 20:20::20:1 LocPrf :

PrefVal : 0 Label : NULL

MED : 0

Path/Ogn: i

*> Network : 40:40:: PrefixLen : 64

NextHop : 30:30::30:1 LocPrf :

PrefVal : 0 Label : NULL

MED : 0

Path/Ogn: 300 i

Refer to Table 5-5 for description on the fields above.

5.1.24 display bgp ipv6 routing-table regular-expression

Syntax

display bgp ipv6 routing-table regular-expression as-regular-expression

View

Any view

Parameter

as-regular-expression: Matched AS regular expression.

Description

Use the display bgp ipv6 routing-table regular-expression command to display the routing information matching specified AS regular expression.

Example

# Display the routing information matching the specified AS regular expression.

<Sysname> display bgp ipv6 routing-table regular-expression ^100

BGP Local router ID is 20.20.20.1

Status codes: * - valid, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

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

*> Network : 50:50:: PrefixLen : 64

NextHop : 10:10::10:1 LocPrf :

PrefVal : 0 Label : NULL

MED : 0

Path/Ogn: 100 i

Refer to Table 5-5 for description on the fields above.

5.1.25 display bgp ipv6 routing-table statistic

Syntax

display bgp ipv6 routing-table statistic

View

Any view

Parameter

None

Description

Use the display bgp ipv6 routing-table statistic command to display statistics about BGP4+ routes.

Example

# Display statistics about BGP4+ routes.

<Sysname> display bgp ipv6 routing-table statistic

Total Number of Routes: 1

5.1.26 filter-policy export

Syntax

filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name } export [ protocol process-id ]

undo filter-policy export [ protocol process-id ]

View

IPv6 address family view

Parameter

acl6-number: Specifies the number of an IPv6 ACL matching against the destination address field of routing information, ranging from 2000 to 3999.

ipv6-prefix-name: Specifies the name of an IPv6 prefix list matching against the destination address field of routing information, a string of 1 to 19 characters.

protocol: Specifies the routing protocol from which to filter routes. It can be direct, isisv6, ospfv3, ripng, and static at present. If no protocol specified, all routes will be filtered when advertised.

process-id: Process ID of routing protocol, in the range 1 to 65535. It is available only when the protocol is isisv6, ospfv3 or ripng.

Description

Use the filter-policy export command to filter advertised routes and only the routes passing the filter can be advertised by BGP4+.

Use the undo filter-policy export command to cancel filtering advertised routes.

By default, advertised routing information is not filtered.

If protocol specified, only routes redistributed from the specified protocol are filtered. If protocol is not specified, routes redistributed from any protocol will be filtered.

Example

# Use ACL6 2001 to filter all routes advertised by BGP4+.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] filter-policy 2001 export

5.1.27 filter-policy import

Syntax

filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name } import

undo filter-policy import

View

IPv6 address family view

Parameter

acl6-number: Specifies the number of an IPv6 ACL matching against the destination address field of routing information, ranging from 2000 to 3999.

ipv6-prefix-name: Specifies the name of an IPv6 prefix list matching against the destination address field of routing information, a string of 1 to 19 characters.

Description

Use the filter-policy import command to filter received routing information, only routes not filtered are imported.

Use the undo filter-policy import command to cancel filtering received routing information.

By default, the received routing information is not filtered.

Example

# Use ACL6 2001 to filter all routes received by BGP4+.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] filter-policy 2001 import

5.1.28 group

Syntax

group ipv6-group-name [ internal | external ]

undo group ipv6-group-name

View

IPv6 address family view

Parameter

ipv6-group-name: Specifies the name of an IPv6 peer group, a string of 1 to 47 characters.

internal: Creates an IBGP peer group.

external: Creates an EBGP peer group, including groups of other sub ASs in confederation.

Description

Use the group command to create a peer group.

Use the undo group command to delete a peer group.

An IBGP peer group will be created if neither internal nor external is selected.

The members of a peer group must be configured the same routing update policy as the peer group, but can be configured with different inbound policies.

Example

# Create an IBGP peer group "test".

<Sysname> system-view

[Sysname] bgp 100

[Sysname] ipv6-family

[Sysname-bgp-af-ipv6] group test

5.1.29 import-route

Syntax

import-route protocol [ process-id ] [ med med-value | route-policy route-policy-name ]*

undo import-route protocol [ process-id ]

View

IPv6 address family view

Parameter

protocol: Specifies the routing protocol from which to redistribute routes, it can be direct, isisv6, ospfv3, ripng and static at present.

process-id: Process ID, in the range 1 to 65535. It is available only when the protocol is isisv6, ospfv3 or ripng.

med-value: Specifies the MED value to be applied to redistributed routes, ranging from 0 to 4294967295. If not specified, the cost of a redistributed route is the route’s MED in BGP4+.

route-policy-name: Specifies the name of a routing policy used to filter redistributed routes, a string of 1 to 19 characters.

Description

Use the import-route command to redistribute routes from other protocols.

Use the undo import-route command to remove the configuration.

By default, BGP4+ does not redistribute routes from other protocols.

The routes redistributed to the BGP4+ routing table using the import-route command has the ORIGIN attribute as incomplete.

Example

# Redistribute routes from RIPng 1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] import-route ripng 1

5.1.30 ipv6-family

Syntax

ipv6-family

undo ipv6-family

View

BGP view

Parameter

None

Description

Use the ipv6-family command to enter IPv6 address family view.

Use the undo ipv6-family command to remove all configurations from the view.

BGP IPv4 unicast view is the default.

Example

# Enter IPv6 address family view.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6]

5.1.31 network

Syntax

network ipv6-address prefix-length [ short-cut | route-policy route-policy-name ]

undo network ipv6-address prefix-length [ short-cut ]

View

IPv6 address family view

Parameter

ipv6-address: IPv6 address to advertise.

prefix-length: Prefix length of the address, in the range 0 to 128.

short-cut: Specifies an EBGP route to use local routing managing value, reducing the preference of the route in general.

route-policy-name: Name of Route-policy applied to the route, a string of 1 to 19 characters.

Description

Use the network command to advertise a network route the BGP4+ routing table.

Use the undo network command to remove the existing configuration.

By default, no route is advertised.

Note that:

l The network route to be advertised must be in the local IP routing table, and using a routing policy makes route management more flexible.

l The route advertised to the BGP4+ routing table using the network command has the ORIGIN attribute as IGP.

Example

# Advertise the route 2002::/16.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] network 2002:: 16

5.1.32 peer advertise-community

Syntax

peer { ipv6-group-name | ipv6-address } advertise-community

undo peer { ipv6-group-name | ipv6-address } advertise-community

View

IPv6 address family view

Parameter

ipv6-group-name: Specifies the name of a peer group, in the range 1 to 47 characters.

ipv6-addres: IPv6 address of a peer.

Description

Use the peer advertise-community command to advertise community attribute to a peer/peer group.

Use the undo peer advertise-community command to cancel the existing configuration.

By default, no community attribute is advertised to any peer group/peer.

Example

# Advertise community attribute to the peer 1:2::3:4.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 advertise-community

5.1.33 peer advertise-ext-community

Syntax

peer { ipv6-group-name | ipv6-address } advertise-ext-community

undo peer { ipv6-group-name | ipv6-address } advertise-ext-community

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-addres: IPv6 address of a peer.

Description

Use the peer advertise-ext-community command to advertise extended community attribute to a peer/peer group.

Use the undo peer advertise-ext-community command to remove the configuration.

By default, no extended community attribute is advertised to a peer/peer group.

& Note:

Currently, the S3610&S5510 series do not support this command.

Example

Currently, the S3610&S5510 series do not support this command.

5.1.34 peer allow-as-loop

Syntax

peer { ipv6-group-name | ipv6-address } allow-as-loop [ number ]

undo peer { ipv6-group-name | ipv6-address } allow-as-loop

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

number: Specifies the repeating times of the local AS number, in the range 1 to 10, which defaults to 1.

Description

Use the peer allow-as-loop command to allow local AS number in the AS_PATH attribute of routes from a peer/peer group, and to configure the repeating times of the local AS number.

Use the undo peer allow-as-loop command to cancel the function.

Local AS number is not allowed by default.

Example

# Configure the repeating times of the local AS number as 2 for routes from peer 1::1.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1::1 allow-as-loop 2

5.1.35 peer as-number

Syntax

peer { ipv6-group-name | ipv6-address } as-number as-number

undo peer ipv6-group-name as-number

undo peer ipv6-address

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

as-number: AS number of the peer/peer group, in the range 1 to 65535.

Description

Use the peer as-number command to specify an AS number for a peer/peer group.

Use the undo peer as-number command to delete the AS number of a peer.

Use the undo peer command to delete a peer.

By default, no AS number is configured for a peer/peer group.

Example

# Specify the AS number of the peer group test as 100.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] group test external

[Sysname-bgp-af-ipv6] peer test as-number 100

5.1.36 peer as-path-acl

Syntax

peer { ipv6-group-name | ipv6-address } as-path-acl as-path-acl-number { import | export }

undo peer { ipv6-group-name | ipv6-address } as-path-acl as-path-acl-number { import | export }

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

as-path-acl-number: Number of an AS path ACL, in the range 1 to 256.

import: Filters received routes.

export: Filters advertised routes.

Description

Use the peer as-path-acl command to specify an AS path list to filter routes received from or advertised to a peer/peer group.

Use the undo peer as-path-acl command to cancel the existing configuration.

By default, no AS path list is specified for filtering.

Example

# Specify the AS path ACL 3 to filter routes advertised to the peer 1:2::3:4.

<Sysname> system-view

[Sysname] ip as-path-acl 3 permit ^200

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 as-path-acl 3 export

5.1.37 peer capability-advertise route-refresh

Syntax

peer { ipv6-group-name | ipv6-address } capability-advertise route-refresh

undo peer { ipv6-group-name | ipv6-address } capability-advertise route-refresh

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

Description

Use the peer capability-advertise route-refresh command to enable BGP4+ route-refresh.

Use the undo peer capability-advertise route-refresh command to disable the function.

By default, route-refresh is enabled.

Example

# Disable route-refresh of peer 1:2::3:4.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 as-number 100

[Sysname-bgp-af-ipv6] undo peer 1:2::3:4 capability-advertise route-refresh

5.1.38 peer connect-interface

Syntax

peer { ipv6-group-name | ipv6-address } connect-interface interface-type interface-number

undo peer { ipv6-group-name | ipv6-address } connect-interface

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

interface-type interface-number: Specifies the type and name of the interface.

Description

Use the peer connect-interface command to specify the source interface of updates to a peer/peer group.

Use the undo peer connect-interface command to restore the best source interface.

By default, BGP4+ uses the best source interface.

For updates to be forwarded in case the interface experiences a failure, you can configure to use the Loopback interface for forwarding route updates.

Example

# Specify loopback0 as the source interface for route updates to the peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer test connect-interface loopback 0

5.1.39 peer default-route-advertise

Syntax

peer { ipv6-group-name | ipv6-address } default-route-advertise [ route-policy route-policy-name ]

undo peer { ipv6-group-name | ipv6-address } default-route-advertise

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

route-policy-name: Route-policy name, a string of 1 to 19 characters.

Description

Use the peer default-route-advertise command to advertise a default route to a peer/peer group.

Use the undo peer default-route-advertise command to disable advertising default route.

By default, no default route is advertised to a peer/peer group.

For this command, no default route is required in the routing table. A default route is sent unconditionally to a peer/peer group with the next hop being itself.

Example

# Advertise a default route to peer 1:2::3:4.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 default-route-advertise

5.1.40 peer description

Syntax

peer { ipv6-group-name | ipv6-address } description description-text

undo peer { ipv6-group-name | ipv6-address } description

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

description-text: Description information for the peer/peer group, a string of 1 to 79 characters.

Description

Use the peer description command to configure the description information for a peer/peer group.

Use the undo peer description command to remove the description information of a peer/peer group.

By default, no description information is configured for a peer (group).

Create a peer/peer group before configuring description information for it.

Example

# Configure the description information of the peer group “test” as ISP1.

<Sysname] system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] group test external

[Sysname-bgp-af-ipv6] peer test description ISP1

5.1.41 peer ebgp-max-hop

Syntax

peer { ipv6-group-name | ipv6-address } ebgp-max-hop [ hop-count ]

undo peer { ipv6-group-name | ipv6-address } ebgp-max-hop

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

hop-count: Maximum hop count, in the range 1 to 255. By default, the value is 64.

Description

Use the peer ebgp-max-hop command to allow establishing EBGP connection with a peer/peer group on an indirectly connected network.

Use the undo peer ebgp-max-hop command to cancel the existing configuration.

By default, this feature is disabled.

You can use the argument hop-count to specify the maximum route count of the EBGP connection.

Example

# Allow establishing the EBGP connection with the peer group "test" on an indirectly connected network.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] group test external

[Sysname-bgp-af-ipv6] peer test ebgp-max-hop

5.1.42 peer fake-as

Syntax

peer { ipv6-group-name | ipv6-address } fake-as as-number

undo peer { ipv6-group-name | ipv6-address } fake-as

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

as-number: Local autonomous system number, in the range 1 to 65535.

Description

Use the peer fake-as command to configure a fake local AS number for a peer or peer group.

Use the undo peer fake-as command to remove the configuration.

By default, no fake local AS number is configured for a peer or peer group.

Example

# Configure a fake AS number 200 for the peer group test.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] group test external

[Sysname-bgp-af-ipv6] peer test fake-as 200

5.1.43 peer filter-policy

Syntax

peer { ipv6-group-name | ipv6-address } filter-policy acl6-number { import | export }

undo peer { ipv6-group-name | ipv6-address } filter-policy acl6-number { import | export }

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

acl6-number: IPv6 ACL number, in the range 2000 to 3999.

import: Applies the filter-policy to routes received from the peer/peer group.

export: Applies the filter-policy to routes advertised to the peer/peer group.

Description

Use the peer filter-policy command to configure an ACL-based filter policy for a peer or peer group.

Use the undo peer filter-policy command to remove the configuration.

By default, no ACL-based filter policy is configured for a peer or peer group.

Example

# Apply the ACL6 2000 to filter routes advertised to the peer 1:2::3:4.

<Sysname> system-view

[Sysname] acl ipv6 number 2000

[Sysname-acl6-basic-2000] rule permit source 2001:1:: 64

[Sysname-acl6-basic-2000] quit

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 filter-policy 2000 export

5.1.44 peer group

Syntax

peer ipv6-address group ipv6-group-name [ as-number as-number ]

undo peer ipv6-address group ipv6-group-name

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

as-number: Specifies the AS number of the peer/peer group, in the range 1 to 65535.

Description

Use the peer group command to add a peer to a peer group.

Use the undo peer group command to delete a specified peer from a peer group.

No peer is added by default.

Example

# Create a peer group “test” and add the peer 1:2::3:4 to the peer group.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] group test external

[Sysname-bgp-af-ipv6] peer 1:2::3:4 as-number 200

[Sysname-bgp-af-ipv6] peer 1:2::3:4 group test

5.1.45 peer ignore

Syntax

peer { ipv6-group-name | ipv6-address } ignore

undo peer { ipv6-group-name | ipv6-address } ignore

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

Description

Use the peer ignore command to terminate session with a peer or peer group.

Use the undo peer ignore command to remove the configuration.

By default, a router can establish sessions with a peer or peer group.

After the peer ignore command is executed, the system terminates session with the specified peer or peer group and clears all the related routing information. For a peer group, this means all sessions with the peer group will be tore down.

Example

# Terminate session with the peer 1:2::3:4.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 ignore

5.1.46 peer ipv6-prefix

Syntax

peer { ipv6-group-name | ipv6-address } ipv6-prefix ipv6-prefix-name { import | export }

undo peer { ipv6-group-name | ipv6-address } ipv6-prefix { import | export }

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

ipv6-prefix-name: Specifies an IPv6 prefix list name, a string of 1 to 19 characters.

import: Applies the filtering policy to routes received from the specified peer/peer group.

export: Applies the filtering policy to routes advertised to the specified peer/peer group.

Description

Use the peer ipv6-prefix command to use an IPv6 prefix list to filter routes received from or advertised to a peer or peer group.

Use the undo peer ipv6-prefix command to remove the configuration.

By default, no IPv6 prefix list is specified.

Example

# Use the IPv6 prefix list “list 1” to filter routes advertised to the peer group “test”.

<Sysname> system-view

[Sysname] ip ipv6-prefix list1 permit 2002:: 64

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer test ipv6-prefix list1 export

5.1.47 peer keep-all-routes

Syntax

peer { ipv6-group-name | ipv6-address } keep-all-routes

undo peer { ipv6-group-name | ipv6-address } keep-all-routes

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

Description

Use the peer keep-all-routes command to save the original routing information from a peer or peer group, even routes that failed to pass the inbound policy.

Use the undo peer keep-all-routes command to disable this function.

By default, the function is not available.

Example

# Save the routing information from peer 1:2::3:4.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 keep-all-routes

5.1.48 peer log-change

Syntax

peer { ipv6-group-name | ipv6-address } log-change

undo peer { ipv6-group-name | ipv6-address } log-change

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

Description

Use the peer log-change command to record the session state and event information for a specified peer or peer group.

Use the undo peer log-change command to remove the configuration.

By default, the session state and event information are recorded for a peer or peer group.

Example

# Record the session state and event information for peer 1:2::3:4.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 log-change

5.1.49 peer next-hop-local

Syntax

peer { ipv6-group-name | ipv6-address } next-hop-local

undo peer { ipv6-group-name | ipv6-address } next-hop-local

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

Description

Use the peer next-hop-local command to set the next hop of routes advertised to a peer/peer group to the local router.

Use the undo peer next-hop-local command to remove the configuration.

By default, the feature is available for routes advertised to the EBGP peer/peer group, but not available to the IBGP peer/peer group

Example

# Set the next hop of routes advertised to EBGP peer group “test” to the router itself.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] group test external

[Sysname-bgp-af-ipv6] peer test next-hop-local

5.1.50 peer preferred-value

Syntax

peer { ipv6-group-name | ipv6-address } preferred-value value

undo peer { ipv6-group-name | ipv6-address } preferred-value

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

value: Preferred value, in the range 0 to 65535.

Description

Use the peer preferred-value command to assign a preferred value to routes received from a peer or peer group.

Use the undo peer preferred-value command to restore the default value.

By default, routes received from a peer or peer group have a preferred value of 0.

The routes learned from peers each have an initial preferred value. The route with the biggest value is selected as the route to a specified network.

Example

# Configure the preferred value as 50 for routes from peer 1:2::3:4.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 preferred-value 50

5.1.51 peer public-as-only

Syntax

peer { ipv6-group-name | ipv6-address } public-as-only

undo peer { ipv6-group-name | ipv6-address } public-as-only

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

Description

Use the peer public-as-only command to carry no private AS number in BGP4+ updates sent to a peer/peer group.

Use the undo peer public-as-only command to carry the private AS number in BGP4+ updates sent to a peer/peer group.

By default, private AS number is carried in BGP4+ updates.

The command does not take effect if the BGP4+ update has both public AS number and private AS number. The range of private AS number is from 64512 to 65535.

Example

# Carry no private AS number in BGP4+ updates sent to the peer 1:2::3:4.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 public-as-only

5.1.52 peer reflect-client

Syntax

peer { ipv6-group-name | ipv6-address } reflect-client

undo peer { ipv6-group-name | ipv6-address } reflect-client

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

Description

Use the peer reflect-client command to configure the router as a router reflector and specify a peer/peer group as a client.

Use the undo peer reflect-client command to cancel the existing configuration.

By default, neither route reflector nor client is configured.

Related command: reflect between-clients and reflector cluster-id.

Example

# Configure the local device as a router reflector and specify the peer group "test" as a client.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] group test

[Sysname-bgp-af-ipv6] peer test reflect-client

5.1.53 peer route-limit

Syntax

peer { ipv6-group-name | ipv6-address } route-limit limit [ percentage ]

undo peer { ipv6-group-name | ipv6-address } route-limit

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

limit: Specifies the upper limit of address prefixes received from the peer or peer group. a string of 1 to 4096 characters.

percentage: Specifies the percentage of routes to generate alarm information, ranging from 1 to 100, with the default as 75.

Description

Use the peer route-limit command to set the maximum number of prefixes allowed to receive from a peer/peer group.

Use the undo peer route-limit command to restore the default.

By default, the router has no prefix number limit.

The local router will end peer relation when the number of address prefixes received exceeds the limit.

Example

# Set the number of prefixes allowed to receive from the peer 1:2::3:4 to 1000.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 route-limit 1000

5.1.54 peer route-policy

Syntax

peer { ipv6-group-name | ipv6-address } route-policy route-policy-name { import | export }

undo peer { ipv6-group-name | ipv6-address } route-policy route-policy-name { import | export }

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

route-policy-name: Specifies route-policy name, a string of 1 to 19 characters.

import: Applies the route-policy to routes received from the peer (group).

export: Applies the route-policy to routes advertised to the peer (group).

Description

Use the peer route-policy command to apply a routing policy to routes received from or advertised to a peer or peer group.

Use the undo peer route-policy command to remove the configuration.

By default, the peer (group) has no route-policy associated.

The peer route-policy command does not use the if-match interface clause in the route-policy.

Example

# Apply routing policy test-policy to routes received from the peer group test.

<Sysname> system-view

[Sysname] route-policy test-policy permit node 10

[Sysname-route-policy] if-match cost 10

[Sysname-route-policy] apply cost 65535

[Sysname-route-policy] quit

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] group test external

[Sysname-bgp-af-ipv6] peer test route-policy test-policy import

5.1.55 peer route-update-interval

Syntax

peer { ipv6-group-name | ipv6-address } route-update-interval seconds

undo peer { ipv6-group-name | ipv6-address } route-update-interval

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

seconds: Specifies the minimum interval for sending the same update to a peer (group), in the range 5 to 600 seconds.

Description

Use the peer route-update-interval command to specify the interval for sending the same update to a peer/peer group.

Use the undo peer route-update-interval command to restore the default value.

By default, the interval is 15 seconds for the IBGP peer, and 30 seconds for the EBGP peer.

Example

# Specify the interval for sending the same update to the peer 1:2::3:4 as 10 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 as-number 100

[Sysname-bgp-af-ipv6] peer 1:2::3:4 route-update-interval 10

5.1.56 peer substitute-as

Syntax

peer { ipv6-group-name | ipv6-address } substitute-as

undo peer { ipv6-group-name | ipv6-address } substitute-as

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

Description

Use the peer substitute-as command to substitute the local AS number for AS number in the AS_PATH attribute of a peer/peer group.

Use the undo peer substitute-as command to remove the configuration.

By default, the local AS number is not substituted for AS number in the AS_PATH attribute of a peer/peer group.

Example

# Substitute local AS number for AS number of peer 1:2::3:4.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] peer 1:2::3:4 substitute-as

5.1.57 peer timer

Syntax

peer { ipv6-group-name | ipv6-address } timer keepalive keepalive hold holdtime

undo peer { ipv6-group-name | ipv6-address } timer

View

IPv6 address family view

Parameter

ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

ipv6-address: IPv6 address of a peer.

keepalive: Specifies the keepalive interval in seconds, ranging from 1 to 21,845.

holdtime: Specifies the holdtime in seconds, ranging from 3 to 65,535.

Description

Use the peer timer command to configure keepalive interval and holdtime interval for a peer or peer group.

Use the undo peer timer command to restore the default.

keepalive interval defaults to 60 seconds, and holdtime interval defaults to 180 seconds

Note that:

l The timer configured by this command is preferred to the timer configured by the timer command.

l The holdtime interval must be at least three times the keepalive interval.

Related command: timer.

Example

# Configure the keepalive interval and holdtime interval for the peer group test as 60 seconds and 180 seconds.

<Sysname] system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] group test external

[Sysname-bgp-af-ipv6] peer test timer keep-alive 60 hold 180

5.1.58 preference

Syntax

preference { external-preference internal-preference local-preference | route-policy route-policy-name }

undo preference

View

IPv6 address family view

Parameter

external-preference: Preference of EBGP route that is learned from an EBGP peer, in the range 1 to 255.

internal-preference: Preference of IBGP route that is learned from an IBGP peer, in the range 1 to 255.

local-preference: Preference of local route, in the range 1 to 255.

route-policy-name: Route policy name, a string of 1 to 19 characters. You can set preference for routes passing the routing policy. For the routes not matched, the default value applies.

Description

Use the preference command to configure preferences for EBGP, IBGP, and local routes.

Use the undo preference command to restore the default.

For external-preference, internal-preference and local-preference, the bigger the preference value is, the lower the preference is, and the default values are 255, 255 and 130.

Example

# Configure preferences for EBGP, IBGP, and local routes as 20, 20 and 200.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] preference 20 20 200

5.1.59 reflect between-clients

Syntax

reflect between-clients

undo reflect between-clients

View

IPv6 address family view

Parameter

None

Description

Use the reflect between-clients command to enable route reflection between clients.

Use the undo reflect between-clients command to disable this function.

By default, route reflection between clients is enabled.

After a route reflector is configured, it reflects routes between clients. If the clients of a route reflector are fully connected, disable route reflection between clients to reduce costs.

Related command: reflector cluster-id and peer reflect-client.

Example

# Enable route reflection between clients.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] reflect between-clients

5.1.60 reflector cluster-id

Syntax

reflector cluster-id cluster-id

undo reflector cluster-id

View

IPv6 address family view

Parameter

cluster-id: Specifies the cluster ID of the route reflector, in integer (1 to 4294967295) or IPv4 address format.

Description

Use the reflector cluster-id command to configure the cluster ID of the route reflector.

Use the undo reflector cluster-id command to remove the configured cluster ID.

By default, each route reflector uses its router ID as the cluster ID.

Usually, there is only one route reflector in a cluster. Router ID of the reflector identifies the cluster. You can configure multiple route reflectors to improve the stability of the network, and use this command to configure the identical cluster ID for all the reflectors to avoid routing loops.

Related command: reflect between-clients and peer reflect-client.

Example

# Set cluster ID for local router to 50.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] reflector cluster-id 50

5.1.61 refresh bgp ipv6

Syntax

refresh bgp ipv6 { all | ipv6-address | group ipv6-group-name | external | internal } { export | import }

View

User view

Parameter

all: Soft-reset all BGP4+ connections.

ipv6-address: IPv6 address of a peer.

Ipv6-group-name: Name of a peer group, a string of 1 to 47 characters.

external: EBGP connection.

internal: IBGP connection.

export: Outbound direction on which to perform soft reset.

import: Inbound direction on which to perform soft reset.

Description

Use the refresh bgp ipv6 command to perform soft reset on specified BGP4+ connections. Using this function can refresh the BGP4+ routing table without disconnecting BGP4+ connections and apply a new available policy.

To perform BGP4+ soft reset, all routers in the network should support Route-refresh. If a router not supporting route-refresh exists in the network, you need to configure the peer keep-all-routes command on the local router to save all route updates before performing soft reset.

Example

# Perform BGP4+ soft reset.

<Sysname> refresh bgp ipv6 all import

5.1.62 reset bgp ipv6

Syntax

reset bgp ipv6 { all | as-number | ipv6-address [ flap-info ] | group ipv6-group-name | external | internal }

View

User view

Parameter

all: Resets all BGP4+ connections.

as-number: Specifies an AS number with which to reset connections to peers.

ipv6-address: Specifies the IP address of a peer with which to reset the connection.

flap-info: Clears history information of routing flap.

group ipv6-group-name: Specifies to reset connections with the specified peer group.

external: Resets all the EBGP connections.

internal: Resets all the IBGP connections.

Description

Use the reset bgp ipv6 command to reset specified BGP4+ connections.

Example

# Reset all the BGP4+ connections.

<Sysname> reset bgp ipv6 all

5.1.63 reset bgp ipv6 dampening

Syntax

reset bgp ipv6 dampening [ ipv6-address prefix-length ]

View

User view

Parameter

ipv6-address: IPv6 address

prefix-length: Prefix length of the address, in the range 0 to 128.

Description

Use the reset bgp ipv6 dampening command to clear route dampening information and release suppressed routes.

If no ipv6-address prefix-length specified, all IPv6 route dampening information will be cleared.

Example

# Clear route damping information of route 2345::/64 and release suppressed routes.

<Sysname> reset bgp ipv6 dampening 2345:: 64

5.1.64 reset bgp ipv6 flap-info

Syntax

reset bgp ipv6 flap-info [ ipv6-address/prefix-length | regexp as-path-regexp | as-path-acl as-path-acl-number ]

View

User view

Parameter

ipv6-address: Specifies an IPv6 address of which to clear flap information.

prefix-length: Prefix length of the address, in the range 1 to 128.

as-path-regexp: Clears flap information of routes matching an AS path regular expression.

as-path-acl-number: Clears flap information of routes matching an AS path ACL, number of which is in the range 1 to 256.

Description

Use the reset bgp ipv6 flap-info command to clear the flap statistics of matched routes.

The flap statistics of all the routes will be cleared if no parameter or keyword is specified.

Example

# Clear the flap statistics of all routes matching AS path ACL 10.

<Sysname> system-view

[Sysname] ip as-path-acl 10 permit ^100.*200$

[Sysname] quit

<Sysname> reset bgp ipv6 flap-info as-path-acl 10

5.1.65 router-id

Syntax

router-id router-id

undo router-id

View

BGP view

Parameter

router-id: Router ID in IP address format.

Description

Use the router-id command to specify a router ID. Each router ID identifies only one router in an AS.

Use the undo router-id command to remove a router ID.

To run BGP4+ protocol, a router must have a router ID, which is an unsigned 32-bit integer as the router’s only identification in an AS.

Router ID can be configured manually. The system will acquire a router ID automatically from the current interfaces’ IPv4 addresses if no router ID is specified. To acquire the router ID, the system finds the maximum IPv4 address first from Loopback interface addresses, then from other interfaces addresses if there is no Loopback interface.

Only when the interface of the Router ID is removed or the manually configured Router ID is removed, will the system select another Router ID. To improve network reliability, configure the IPv4 address of a loopback interface as the Router ID.

Example

# Specifies Router ID as 10.18.4.221.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] router-id 10.18.4.221

5.1.66 synchronization

Syntax

synchronization

undo synchronization

View

IPv6 address family view

Parameter

None

Description

Use the synchronization command to synchronize the BGP4+ and IGP routes.

Use the undo synchronization command to disable synchronization.

The feature is disabled by default.

With this feature enabled and when a non-BGP4+ router is responsible for forwarding packets in an AS, BGP4+ speakers in the AS cannot advertise routing information to outside ASs unless all routers in the AS know the latest routing information.

When a BGP4+ router receives an IBGP route, it checks only whether the next hop is reachable before advertisement by default. If synchronization is enabled, the IBGP route is synchronized and advertised to EBGP peers only when the route is also advertised by IGP. Otherwise, the IBGP route cannot be advertised to EBGP peers.

Example

# Synchronize BGP4+ and IGP routes.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] synchronization

5.1.67 timer

Syntax

timer keepalive keepalive hold holdtime

undo timer

View

IPv6 address family view

Parameter

keepalive: Specifies the keepalive interval in seconds, ranging from 1 to 21,845.

holdtime: Specifies the holdtime interval in seconds, ranging from 3 to 65,535.

Description

Use the timer command to configure BGP4+ keepalive interval and holdtime interval.

Use the undo timer command to restore the default.

By default, the keepalive and holdtime intervals are 60s and 180s.

Note that:

l Timer configured using the peer timer command is preferred to the timer configured using this command.

l The holdtime interval must be at least three times the keepalive interval.

l The configured timer applies to all the BGP4+ peers. It becomes valid only after the corresponding BGP4+ connections are reset.

Related command: peer timer.

Example

# Configure keepalive interval and holdtime interval as 60 and 180 seconds.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp] ipv6-family

[Sysname-bgp-af-ipv6] timer keepalive 60 hold 180

Chapter 6 Routing Policy Configuration Commands

& Note:

l Verify that the system already operates in IPv4/IPv6 dual-stack mode before configuring IPv6 routing policy.

l All the IPv6 routing policy related configuration mentioned in this manual assumes that the system already operates in IPv4/IPv6 dual-stack mode. For dual stack mode configuration, see the part covering dual stack in the IPv6 Configuration module.

6.1 Public Routing Policy Configuration Commands

For public routing policy configuration commands, see IPv4 Routing module in the command manual for information related to routing policy.

6.2 IPv6 Routing Policy Configuration Commands

6.2.1 apply ipv6 next-hop

Syntax

apply ipv6 next-hop ipv6-address

undo apply ipv6 next-hop

View

Routing policy view

Parameter

ipv6-address: Next hop IPv6 address.

Description

Use the apply ipv6 next-hop command to set the next hop for IPv6 routing information to the specified address.

Use the undo apply ipv6 next-hop command to remove the clause configuration.

No next hop address is set for IPv6 routing information by default.

You cannot use the apply ipv6 next-hop command to set next hop address for redistributed routes.

Example

# Create a routing policy named policy1 with the node number of 10, matching mode as permit. If routing information matches AS path ACL 1, set the next hop address to 3ff3:506::1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy] if-match as-path-acl 1

[Sysname-route-policy] apply ipv6 next-hop 3ffe:506::1

6.2.2 display ip ipv6-prefix

Syntax

display ip ipv6-prefix [ ipv6-prefix-name ]

View

Any view

Parameter

ipv6-prefix-name: IPv6 prefix list name, a string of 1 to 19 characters.

Description

Use the display ip ipv6-prefix command to display the statistics of the specified IPv6 prefix list. If no IPv6 prefix list name is specified, the statistics of all the IPv6 prefix lists will be displayed.

Example

# Display the statistics of all the IPv6 address prefix lists.

<Sysname> display ip ipv6-prefix

Prefix-list6 abc

Permitted 0

Denied 0

index: 10 permit ::/0

index: 20 permit ::/1 ge 1 le 128

Table 6-1 Description on the fields of the display ip ipv6-prefix command

Field	Description
Prefix-list6	Name of IPv6 prefix list
Permitted	Number of routes satisfying the matching condition
Denied	Number of routes not satisfying the matching condition
index	Internal serial number of address prefix list
permit	Matching mode: permit, deny
::/1	IPv6 address and its prefix length for matching
ge	greater-equal, the minimum length of matched IPv6 prefix
le	less-equal, the maximum length of matched IPv6 prefix

6.2.3 if-match ipv6

Syntax

if-match ipv6 { address | next-hop | route-source } { acl acl6-number | prefix-list ipv6-prefix-name }

undo if-match ipv6 { address | next-hop | route-source } [ acl | prefix-list ]

View

Routing policy view

Parameter

address: Matches the destination address of IPv6 routing information.

next-hop: Matches the next hop of IPv6 routing information.

route-source: Matches the source address of IPv6 routing information.

acl acl6-number: Specifies the number of an IPv6 ACL for filtering, in the range 2000 to 3999 for address, and 2000 to 2999 for next-hop and route-source.

prefix-list ipv6-prefix-name: Specifies the name of a IPv6 prefix list for filtering, a string of 1 to 19 characters.

Description

Use the if-match ipv6 command to match IPv6 routing information (destination, next hop or source address).

Use the undo if-match ipv6 command to remove the matching condition.

The matching condition is not configured by default.

Example

# Create a routing policy named policy1 with the node number of 10, matching mode as permit. Define an if-match clause to let pass the routing information whose next hop address matches IPv6 prefix list p1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy] if-match ipv6 next-hop prefix-list p1

6.2.4 ip ipv6-prefix

Syntax

ip ipv6-prefix ipv6-prefix-name [ index index-number ] { deny | permit } ipv6-address prefix-length [ greater-equal min-prefix-length ] [ less-equal max-prefix-length ]

undo ip ipv6-prefix ipv6-prefix-name [ index index-number ]

View

System view

Parameter

ipv6-prefix-name: IPv6 prefix list name, a string of 1 to 19 characters, for uniquely specifying an IPv6 prefix list.

index-number: Index number, in the range 1 to 65535, for uniquely specifying an IPv6 prefix list item. The item with smaller index-number will be tested first.

permit: Specifies the matching mode for the IPv6 prefix list as permit, that is, when a route to be filtered is in the range of the IPv6 prefix list, the route passes the IPv6 prefix list without needing to enter the next item for testing. If the route to be filtered is not in the prefix range, it will enter the next item test.

deny: Specifies the matching mode for the IPv6 prefix list as deny, that is, when a route to be filtered is in the IPv6 prefix list range, the route neither passes the filter nor enters the next node for testing. If not in the range, the route will enter the next item test.

ipv6-address prefix-length: Specifies IPv6 prefix and prefix length, with prefix-length in the range 0 to 128. When specified as :: 0, it matches all IP addresses.

min-prefix-length, max-prefix-length: Specifies the range of IPv6 prefix if IPv6 address and prefix length are matched. greater-equal means “greater than or equal to” and less-equal means “less than or equal to”. The range relation is mask-length <= min-mask-length <= max-mask-length <= 32. If only min-prefix-length is specified, the prefix length range is [ min-prefix-length, 128 ]. If only max-prefix-length is specified, the prefix length range is [ prefix-length, max-prefix-length ]. If both min-prefix-length and max-prefix-length are specified, the prefix length range is [ min-prefix-length, max-prefix-length ].

Description

Use the ip ipv6-prefix command to configure an IPv6 address prefix list or an item.

Use the undo ip ipv6-prefix command to remove an IPv6 address prefix list or an item.

No IPv6 address prefix list is configured by default.

The IPv6 address prefix list is used to filter IPv6 addresses. It may have multiple items, each of which specifies a range of IPv6 prefix. The filtering relation among items is logic OR, namely, it requires passing an item to pass the prefix list.

The IPv6 prefix range is determined by prefix-length and [ min-prefix-length, max-prefix-length ]. If both mask-length and [ min-mask-length, max-mask-length ] are specified, then the IPv6 addresses to be filtered must satisfy both of them.

If ipv6-address prefix-length is specified as :: 0, then only the default routes will be matched.

If you want to match all the routes, configure it as :: 0 less-equal 128.

Example

# Let pass the IPv6 addresses with mask length between 32 bits and 64 bits.

<Sysname> system-view

[Sysname] ip ipv6-prefix abc permit :: 0 greater-equal 32 less-equal 64

# Refuse to let pass the IPv6 addresses with prefix as 3FFE:D00::/32, prefix length greater than or equal to 32 bits.

<Sysname> system-view

[Sysname] ip ipv6-prefix abc deny 3FEE:D00:: 32 less-equal 128

6.2.5 reset ip ipv6-prefix

Syntax

reset ip ipv6-prefix [ ipv6-prefix-name ]

View

User view

Parameter

ipv6-prefix-name: Unique IPv6 prefix list, a string of 1 to 19 characters.

Description

Use the reset ip ipv6-prefix command to clear the statistics of the specified IPv6 prefix list. If no name specified, the statistics of all IPv6 prefix lists will be cleared.

Example

# Specify to delete statistics of the specified IPv6 prefix list.

<Sysname> reset ip ipv6-prefix abc

H3C S3610[S5510] Series Ethernet Switches Command Manual-Release 0001-(V1.02)

1.1.1 delete ipv6 static-routes all

1.1.2 ipv6 route-static

2.1 RIPng Configuration Commands

2.1.2 default cost

2.1.9 import-route

2.1.10 maximum load-balancing

2.1.15 ripng metricin

2.1.16 ripng metricout

3.1.3 default cost

3.1.5 display debugging ospfv3

3.1.6 display ospfv3

3.1.7 display ospfv3 interface

3.1.31 ospfv3 trans-delay

4.1.1 display isis route ipv6

4.1.2 ipv6 default-route-advertise

4.1.4 ipv6 filter-policy export

4.1.5 ipv6 filter-policy import

4.1.7 ipv6 import-route isisv6 level-2 into level-1

4.1.11 isis ipv6 enable

5.1.9 default-route imported

5.1.14 display bgp ipv6 routing-table

5.1.15 display bgp ipv6 routing-table as-path-acl

5.1.17 display bgp ipv6 routing-table community-list

5.1.35 peer as-number

5.1.36 peer as-path-acl

5.1.37 peer capability-advertise route-refresh

5.1.38 peer connect-interface

5.1.42 peer fake-as

5.1.61 refresh bgp ipv6

5.1.62 reset bgp ipv6