05-Layer 3—IP Routing Command Reference

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08-IPv6 static routing commands
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08-IPv6 static routing commands 94.90 KB

IPv6 static routing commands

delete ipv6 static-routes all

Use delete ipv6 static-routes all to delete all IPv6 static routes.

Syntax

delete ipv6 [ vpn-instance vpn-instance-name ] static-routes all

Views

System view

Predefined user roles

network-admin

Parameters

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, the command deletes all IPv6 static routes for the public network.

Usage guidelines

CAUTION

CAUTION:

This command might interrupt network communication and cause packet forwarding failure. Before executing the command, make sure you fully understand the potential impact on the network.

When you use this command, the system will prompt you to confirm the operation before deleting all the IPv6 static routes.

Examples

# 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

Related commands

ipv6 route-static

display ipv6 route-static nib

Use display ipv6 route-static nib to display IPv6 static route next hop information.

Syntax

display ipv6 route-static nib [ nib-id ] [ verbose ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

nib-id: Specifies a NIB by its ID, a hexadecimal string in the range of 1 to ffffffff.

verbose: Displays detailed IPv6 static route next hop information. If you do not specify this keyword, the command displays brief IPv6 static route next hop information.

Examples

# Display brief IPv6 static route next hop information.

<Sysname> display ipv6 route-static nib

Total number of nexthop(s): 35

 

      NibID: 0x21000000        Sequence: 0

       Type: 0x41               Flushed: Yes

   UserKey0: 0x0                VrfNthp: 0

   UserKey1: 0x0                Nexthop: 2::3

    IFIndex: 0x0              LocalAddr: ::

     NewUK0: 0x0                 NewUK1: 0x0

     NewUK2: 0x0                 NewUK3: 0x0

     NewUK4: 0x0                 NewUK5: 0x0

     NewUK6: 0x0                 NewUK7: 0x0

   TopoNthp: Invalid            ExtType: 0x0

 

      NibID: 0x21000001        Sequence: 1

       Type: 0x41               Flushed: Yes

   UserKey0: 0x0                VrfNthp: 0

   UserKey1: 0x0                Nexthop: 3::4

    IFIndex: 0x0              LocalAddr: ::

     NewUK0: 0x0                 NewUK1: 0x0

     NewUK2: 0x0                 NewUK3: 0x0

     NewUK4: 0x0                 NewUK5: 0x0

     NewUK6: 0x0                 NewUK7: 0x0

   TopoNthp: Invalid            ExtType: 0x0

 

...

Table 1 Command output

Field

Description

NibID

ID of the NIB.

Sequence

Sequence number of the NIB.

Type

Type of the NIB.

Flushed

Indicates whether the route with the NIB has been flushed to the FIB.

UserKey0

Reserved data 1.

UserKey1

Reserved data 2.

VrfNthp

Index of the VPN instance to which the next hop belongs. This field displays 0 if the next hop is on the public network.

Nexthop

Next hop address.

IFIndex

Interface index

LocalAddr

Local interface address.

NewUK0

New reserved data 1.

NewUK1

New reserved data 2.

NewUK2

New reserved data 3.

NewUK3

New reserved data 4.

NewUK4

New reserved data 5.

NewUK5

New reserved data 6.

NewUK6

New reserved data 7.

NewUK7

New reserved data 8.

TopoNthp

This field is not supported in the current software version.

Index of the topology that contains the next hop.

This field displays 0 if the next hop is on the public network.

This field displays Invalid if the next hop is on an IPv6 network, because the router does not support non-base topologies.

ExtType

NIB extension type.

 

# Display detailed IPv6 static route next hop information.

<Sysname> display ipv6 route-static nib verbose

Total number of nexthop(s): 35

 

      NibID: 0x21000000        Sequence: 0

       Type: 0x41               Flushed: Yes

   UserKey0: 0x0                VrfNthp: 0

   UserKey1: 0x0                Nexthop: 2::3

    IFIndex: 0x0              LocalAddr: ::

     NewUK0: 0x0                 NewUK1: 0x0

     NewUK2: 0x0                 NewUK3: 0x0

     NewUK4: 0x0                 NewUK5: 0x0

     NewUK6: 0x0                 NewUK7: 0x0

   TopoNthp: Invalid            ExtType: 0x0

     RefCnt: 1              FlushRefCnt: 0

       Flag: 0x12               Version: 1

 1 nexthop(s):

PrefixIndex: 0              OrigNexthop: 2::3

  RelyDepth: 2              RealNexthop: ::

  Interface: NULL0            LocalAddr: ::

  TunnelCnt: 0                      Vrf: default-vrf

   TunnelID: N/A               Topology:

     Weight: 0

 

      NibID: 0x21000001        Sequence: 1

       Type: 0x41               Flushed: Yes

   UserKey0: 0x0                VrfNthp: 0

   UserKey1: 0x0                Nexthop: 3::4

    IFIndex: 0x0              LocalAddr: ::

     NewUK0: 0x0                 NewUK1: 0x0

     NewUK2: 0x0                 NewUK3: 0x0

     NewUK4: 0x0                 NewUK5: 0x0

     NewUK6: 0x0                 NewUK7: 0x0

   TopoNthp: Invalid            ExtType: 0x0

     RefCnt: 1              FlushRefCnt: 0

       Flag: 0x12               Version: 1

 1 nexthop(s):

PrefixIndex: 0              OrigNexthop: 3::4

  RelyDepth: 1              RealNexthop: ::

  Interface: Vlan11           LocalAddr: ::

  TunnelCnt: 0                      Vrf: default-vrf

   TunnelID: N/A               Topology:

     Weight: 0

 

...

Table 2 Command output

Field

Description

x nexthop(s)

Number of next hops.

PrefixIndex

Prefix index of the next hop for an ECMP route.

Vrf

VPN instance name. For the public network, this field displays default-vrf.

OrigNexthop

Original next hop.

RealNexthop

Real next hop.

Interface

Output interface.

localAddr

Local interface address.

NewUK0

New reserved data 1.

NewUK1

New reserved data 2.

NewUK2

New reserved data 3.

NewUK3

New reserved data 4.

NewUK4

New reserved data 5.

NewUK5

New reserved data 6.

NewUK6

New reserved data 7.

NewUK7

New reserved data 8.

RelyDepth

Recursion depth.

TunnelCnt

Number of tunnels after route recursion.

TunnelID

ID of the tunnel after route recursion.

Topology

This field is not supported in the current software version.

Topology name. This field is blank for IPv6, because IPv6 does not support non-base topologies.

Weight

ECMP route weight. This field displays 0 for non-ECMP routes.

RefCnt

Reference count of the next hop.

FlushRefCnt

Reference count of the next hop that is flushed to the FIB.

Flag

Flag of the next hop.

Version

Version of the next hop.

ExtType

NIB extension type.

 

display ipv6 route-static routing-table

Use display ipv6 route-static routing-table to display IPv6 static routing table information.

Syntax

display ipv6 route-static routing-table [ vpn-instance vpn-instance-name ] [ ipv6-address prefix-length ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, the command displays IPv6 static routing table information for the public network.

ipv6-address: Specifies the destination IPv6 address.

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

Examples

# Display IPv6 static routing table information.

<Sysname> display ipv6 route-static routing-table

Total number of routes: 5

 

Status: * - valid

 

*Destination: 1::1/128

       NibID: 0x21000000        NextHop: 2::2

   MainNibID: N/A             BkNextHop: N/A

     BkNibID: N/A             Interface: Vlan-interface11

     TableID: 0xa           BkInterface: N/A

        Flag: 0x80d0a          BfdSrcIp: N/A

     DbIndex: 0x3            BfdIfIndex: 0x0

        Type: Normal        BfdVrfIndex: 0

  TrackIndex: 0xffffffff          Label: NULL

  Preference: 60            vrfIndexDst: 0

     BfdMode: N/A            vrfIndexNH: 0

   Permanent: 0                     Tag: 0

 

*Destination: 1::1234/128

      NibID: 0x21000000        NextHop: 2::2

   MainNibID: N/A             BkNextHop: N/A

     BkNibID: N/A             Interface: NULL0

     TableID: 0xa           BkInterface: N/A

        Flag: 0x80d0a          BfdSrcIp: N/A

     DbIndex: 0x1            BfdIfIndex: 0x0

        Type: Normal        BfdVrfIndex: 0

  TrackIndex: 0xffffffff          Label: NULL

  Preference: 60            vrfIndexDst: 0

     BfdMode: N/A            vrfIndexNH: 0

   Permanent: 0                     Tag: 0

 

...

Table 3 Command output

Field

Description

Destination

Destination address/prefix.

NibID

ID of the NIB.

MainNibID

ID of the primary next hop for static route FRR.

BkNibID

ID of the backup next hop for static route FRR.

NextHop

Next hop address.

BkNextHop

Backup next hop address.

Interface

Output interface of the route.

BkInterface

Backup output interface.

TableID

ID of the table to which the route belongs.

DbIndex

Index of the database to which the route belongs.

Type

Route type:

·     Normal.

·     DHCP.

BfdSrcIp

Source IPv6 address of the indirect BFD session.

BfdIfIndex

Index of the interface where BFD is enabled.

BfdVrfIndex

Index of the VPN instance where BFD is enabled. This field displays 0 if BFD is enabled for the public network.

BfdMode

BFD session mode:

·     N/A—No BFD session is configured.

·     Ctrl—Control packet mode.

·     Echo—Echo packet mode.

TrackIndex

NQA Track index.

vrfIndexDst

Index of the VPN instance to which the destination belongs. For the public network, this field displays 0.

vrfIndexNH

Index of the VPN instance to which the next hop belongs. For the public network, this field displays 0.

Permanent

Permanent static route flag. 1 indicates a permanent static route.

 

ipv6 route-static

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

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

Syntax

ipv6 route-static ipv6-address prefix-length { interface-type interface-number [ next-hop-address ] [ bfd { control-packet | echo-packet } [ bfd-source ipv6-address ] | permanent | track track-entry-number ] | [ vpn-instance d-vpn-instance-name ] next-hop-address [ recursive-lookup host-route ] [ bfd control-packet bfd-source ipv6-address | permanent | track track-entry-number ] } [ preference preference ] [ tag tag-value ] [ description text | recursive-lookup ]

undo ipv6 route-static ipv6-address prefix-length [ interface-type interface-number [ next-hop-address ] | [ vpn-instance d-vpn-instance-name ] next-hop-address ] [ preference preference ]

ipv6 route-static vpn-instance s-vpn-instance-name ipv6-address prefix-length { interface-type interface-number [ next-hop-address ] [ bfd { control-packet | echo-packet } [ bfd-source ipv6-address ] | permanent | track track-entry-number ] | next-hop-address [ public ] [ bfd control-packet bfd-source ipv6-address | permanent | track track-entry-number ] | vpn-instance d-vpn-instance-name next-hop-address [ recursive-lookup host-route ] [ bfd control-packet bfd-source ipv6-address | permanent | track track-entry-number ] } [ preference preference ] [ tag tag-value ] [ description text | recursive-lookup ]

undo ipv6 route-static vpn-instance s-vpn-instance-name ipv6-address prefix-length [ interface-type interface-number [ next-hop-address ] | next-hop-address [ public ] | vpn-instance d-vpn-instance-name next-hop-address ] [ preference preference ]

Default

No IPv6 static route is configured.

Views

System view

Predefined user roles

network-admin

Parameters

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

interface-type interface-number: Specifies an output interface by its type and number. If the output interface is an NBMA interface or broadcast interface and not a point-to-point (P2P) interface, the next hop address must be specified.

next-hop-address: Specifies the next hop IPv6 address.

recursive-lookup host-route: Specifies only host routes for IPv6 static route recursion.

bfd: Enables BFD to detect reachability of the static route's next hop.

control-packet: Specifies the BFD control packet mode.

bfd-source ipv6-address: Specifies the source IPv6 address of BFD packets.

echo-packet: Specifies the BFD echo packet mode.

permanent: Specifies the IPv6 route as a permanent IPv6 static route. If the output interface is down, the permanent IPv6 static route is still active.

track track-entry-number: Associates the IPv6 static route with a track entry specified by its number in the range of 1 to 1024. For more information about Track, see High Availability Configuration Guide.

public: Indicates the next hop is on the public network.

vpn-instance d-vpn-instance-name: Specifies a destination MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If a destination VPN is specified, packets will search for the output interface based on the specified next hop (IPv6 address) for the static route.

preference preference: Specifies a preference for IPv6 static routes, in the range of 1 to 255. The default is 60.

tag tag-value: Sets a tag for marking the static route, in the range of 1 to 4294967295. The default is 0. Tags of routes are used for route control in routing policies. For more information about routing policies, see Layer 3—IP Routing Configuration Guide.

description text: Configures a description for the IPv6 static route, which consists of 1 to 60 characters, including special characters such as the space, but excluding the question mark (?).

recursive-lookup: Enables support for next hop recursion loops for the IPv6 static route. If you do not specify this keyword, the device does not support next hop recursion loops for the IPv6 static route.

 

 

NOTE:

The recursive-lookup keyword is supported only in R6515P06 and later.

 

vpn-instance s-vpn-instance-name: Specifies a source MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. Each VPN has its own routing table, and the configured static route is installed in the routing tables of the specified VPNs.

Usage guidelines

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 entry in the routing table, this default route is used to forward the packet.

Follow these guidelines to configure the output interface, next hop address, or both for a static route:

·     If the output interface is a broadcast interface or an NBMA interface, the next hop address must be specified.

·     If the output interface is a P2P interface, you can specify only the output interface. You do not need to change the configuration of the route even if the peer address is changed.

Follow these guidelines when you configure BFD for IPv6 static routes:

·     If you specify a source IPv6 address for BFD packets on the local device, you must specify that IPv6 address as the next hop IPv6 address on the peer device.

·     If you specify a non-P2P output interface and a direct next hop, specify the bfd-source ipv6-address option as a best practice. Make sure the source IPv6 address of BFD packets meets the following requirements:

¡     The address is the same as the IPv6 address of the output interface.

¡     The address is on the same network segment as the next hop IPv6 address of the same type.

For example, if the next hop IPv6 address is a link-local address, the source IPv6 address of BFD packets must also be a link-local address.

·     Enabling BFD for a flapping route could worsen the route flapping situation. Therefore, use it with caution. For more information about BFD, see High Availability Configuration Guide.

·     The next hop IPv6 address of echo packets must be a global unicast address.

To specify the recursive-lookup host-route keyword, you must use the ipv6 nd route-direct advertise command to enable ND direct route advertisement to advertise 128-bit host routes on the following interfaces:

·     The output interface corresponding to the next hop of the static route.

·     The peer interface connected to the output interface.

For IPv6 static routing-Track-NQA collaboration, you must configure the same VPN instance ID for the next hop to be detected and the NQA operation.

(In R6515P06 and later.) A recursion loop occurs when an IPv6 static route recurses to a related route whose destination address contains the destination address of the IPv6 static route. For example, a recursion loop occurs when the IPv6 static route destined for 4::2/64 recurses to a related route whose destination address is 4::2/48.

·     If the recursive-lookup keyword is not specified, the recursion loop results in route recursion failure. The device further looks up for a related route.

·     If the recursive-lookup keyword is specified, the device determines that the recursion succeeds if the output interface of the related route is an interface directly connected to the device.

If the output interface of an IPv6 static route is found through recursion loops, routing protocols on the device cannot advertise the IPv6 static route to other devices.

The recursive-lookup host-route and recursive-lookup keywords are mutually exclusive. You cannot specify both of the keywords.

Examples

# Configure an IPv6 static route, with the destination address 1:1:2::/64 and next hop 1:1:3::1.

<Sysname> system-view

[Sysname] ipv6 route-static 1:1:2:: 64 1:1:3::1

Related commands

display ipv6 routing-table protocol

ipv6 nd route-direct advertise (Layer 3—IP Services Command Reference)

ipv6 route-static default-preference

Use ipv6 route-static default-preference to set a default preference for IPv6 static routes.

Use undo ipv6 route-static default-preference to restore the default.

Syntax

ipv6 route-static default-preference default-preference

undo ipv6 route-static default-preference

Default

The default preference of IPv6 static routes is 60.

Views

System view

Predefined user roles

network-admin

Parameters

default-preference: Specifies a default preference for IPv6 static routes, in the range of 1 to 255.

Usage guidelines

If no preference is specified for an IPv6 static route, the default preference applies.

When the default preference is reconfigured, it applies only to newly added IPv6 static routes.

Examples

# Set a default preference of 120 for IPv6 static routes.

<Sysname> system-view

[Sysname] ipv6 route-static default-preference 120

Related commands

display ipv6 routing-table protocol

ipv6 route-static nd-request

Use ipv6 route-static nd-request to enable periodic sending of ND requests to the next hops of IPv6 static routes.

Use undo ipv6 route-static nd-request to disable periodic sending of ND requests to the next hops of IPv6 static routes.

Syntax

ipv6 route-static nd-request [ interval interval ]

undo ipv6 route-static nd-request

Default

Periodic sending of ND requests to the next hops of IPv6 static routes is disabled.

Views

System view

Predefined user roles

network-admin

Parameters

interval: Specifies an ND request sending interval in the range of 1 to 300 seconds. The default value is 5.

Usage guidelines

When the following conditions exist, a recursive IPv6 static route becomes inactive:

·     The IPv6 static route uses a host route to reach its direct next hop.

·     The host route is obtained either by specifying the recursive-lookup host-route keyword in the ipv6 route-static command or by routing policy-based recursive lookup.

·     The host route is unavailable because no ND entry exists for that host route on the device.

To resolve this issue, you can use this command to enable the device to periodically send ND requests to the direct next hop. When the device receives an ND response from the direct next hop, it stops sending ND requests and activates the recursive IPv6 static route.

This command applies only to a recursive IPv6 static route that meets the following requirements:

·     The IPv6 static route has no output interface specified.

·     The IPv6 static route fails the next-hop recursion.

For more information about ND, see IPv6 neighbor discovery in Layer 3—IP Services Configuration Guide.

Examples

# Enable sending of ND requests to the next hops of IPv6 static routes and set the sending interval to 10 seconds.

<Sysname> system-view

[Sysname] ipv6 route-static nd-request interval 10

Related commands

ipv6 route-static

protocol nexthop recursive-lookup