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CLI-based Configuration Guide - Reliability

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document provides guidance for configuring reliability services, including interface backup, BFD, VRRP, and EFM.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Example for Configuring a VRRP6 Group in Active/Standby Mode

Example for Configuring a VRRP6 Group in Active/Standby Mode

Networking Requirements

As shown in Figure 7-20, HostA is dual-homed to RouterA and RouterB through the switch on the IPv6 network. The requirements are as follows:
  • The host uses RouterA as the default gateway to connect to the Internet. When RouterA becomes faulty, RouterB functions as the gateway. This implements gateway backup.

  • After RouterA recovers, it becomes the gateway within 20s.

Figure 7-20  Networking diagram for configuring a VRRP6 group in active/standby mode

Configuration Roadmap

The configuration roadmap is as follows:

  1. Assign an IP address to each interface and configure a routing protocol to ensure network connectivity.
  2. Configure a VRRP6 group on RouterA and RouterB, set a higher priority for RouterA so that RouterA functions as the master to forward traffic and set the preemption delay to 20s on RouterA, set a lower priority for RouterB so that RouterB functions as the backup.

Procedure

  1. Configure devices to ensure network connectivity.

    # Assign an IP address to each interface. RouterA is used as an example. The configurations of RouterB and RouterC are similar to the configuration of RouterA, and are not mentioned here.

    <Huawei> system-view
    [Huawei] sysname RouterA
    [RouterA] ipv6
    [RouterA] interface gigabitethernet 1/0/0
    [RouterA-GigabitEthernet1/0/0] ipv6 enable
    [RouterA-GigabitEthernet1/0/0] ipv6 address 2002::1 64
    [RouterA-GigabitEthernet1/0/0] quit
    [RouterA] interface gigabitethernet 2/0/0
    [RouterA-GigabitEthernet2/0/0] ipv6 enable
    [RouterA-GigabitEthernet2/0/0] ipv6 address FC00::1 64
    [RouterA-GigabitEthernet2/0/0] quit
    

    # Configure Layer 2 transparent transmission on the switch.

    <Huawei> system-view
    [Huawei] sysname Switch
    [Switch] vlan 10
    [Switch-vlan10] quit
    [Switch] interface gigabitethernet 1/0/0
    [Switch-GigabitEthernet1/0/0] port hybrid pvid vlan 10
    [Switch-GigabitEthernet1/0/0] port hybrid untagged vlan 10
    [Switch-GigabitEthernet1/0/0] quit
    [Switch] interface gigabitethernet 2/0/0
    [Switch-GigabitEthernet2/0/0] port hybrid pvid vlan 10
    [Switch-GigabitEthernet2/0/0] port hybrid untagged vlan 10
    [Switch-GigabitEthernet2/0/0] quit
    

    # Configure OSPF between RouterA, RouterB, and RouterC. RouterA is used as an example. The configurations of RouterB and RouterC are similar to the configuration of RouterA, and are not mentioned here.

    [RouterA] ospfv3
    [RouterA-ospfv3-1] router-id 1.1.1.1
    [RouterA-ospfv3-1] quit
    [RouterA] interface gigabitethernet 1/0/0
    [RouterA-GigabitEthernet1/0/0] ospfv3 1 area 0
    [RouterA-GigabitEthernet1/0/0] quit
    [RouterA] interface gigabitethernet 2/0/0
    [RouterA-GigabitEthernet2/0/0] ospfv3 1 area 0
    [RouterA-GigabitEthernet2/0/0] quit
    

  2. Configure a VRRP6 group.

    # Configure VRRP6 group 1 on RouterA, and set the priority of RouterA to 120 and the preemption delay to 20s.

    [RouterA] interface gigabitethernet 2/0/0
    [RouterA-GigabitEthernet2/0/0] vrrp6 vrid 1 virtual-ip FE80::1 link-local
    [RouterA-GigabitEthernet2/0/0] vrrp6 vrid 1 virtual-ip FC00::100
    [RouterA-GigabitEthernet2/0/0] vrrp6 vrid 1 priority 120
    [RouterA-GigabitEthernet2/0/0] vrrp6 vrid 1 preempt-mode timer delay 20
    [RouterA-GigabitEthernet2/0/0] quit
    

    # Configure VRRP6 group 1 on RouterB, and set the default priority of 100 for RouterB.

    [RouterB] interface gigabitethernet 2/0/0
    [RouterB-GigabitEthernet2/0/0] vrrp6 vrid 1 virtual-ip FE80::1 link-local
    [RouterB-GigabitEthernet2/0/0] vrrp6 vrid 1 virtual-ip FC00::100
    [RouterB-GigabitEthernet2/0/0] quit

  3. Verify the configuration.

    # After the configuration is complete, run the display vrrp6 command on RouterA and RouterB. You can see that RouterA is in Master state and RouterB is in Backup state.

    <RouterA> display vrrp6
    GigabitEthernet2/0/0 | Virtual Router 1
       State     : Master
       Virtual IP        : FE80::1
                           FC00::100
       Master IP         : FE80::218:82FF:FED3:2AF3
       PriorityRun       : 120
       PriorityConfig    : 120
       MasterPriority    : 120
       Preempt           : YES      Delay Time : 20 s
       TimerRun          : 100 cs
       TimerConfig       : 100 cs
       Virtual Mac       : 0000-5e00-0201 
       Check hop limit   : YES
       Config type       : normal-vrrp
       Backup-forward    : disabled
       Create time       : 2012-01-12 20:15:46 UTC+08:00
       Last change time  : 2012-01-12 20:15:46 UTC+08:00
    
    <RouterB> display vrrp6
    GigabitEthernet2/0/0 | Virtual Router 1
       State            : Backup
       Virtual IP        : FE80::1
                           FC00::100
       Master IP         : FE80::218:82FF:FED3:2AF3
       PriorityRun       : 100
       PriorityConfig    : 100
       MasterPriority    : 120
       Preempt           : YES      Delay Time : 0 s
       TimerRun          : 100 cs
       TimerConfig       : 100 cs
       Virtual Mac       : 0000-5e00-0201
       Check hop limit   : YES
       Config type       : normal-vrrp
       Backup-forward    : disabled
       Create time       : 2012-01-12 20:21:11 UTC+08:00
       Last change time  : 2012-01-12 20:21:11 UTC+08:00
    

    # Run the shutdown command on GE2/0/0 of RouterA to simulate a link fault.

    Run the display vrrp6 command on RouterA and RouterB. You can see that RouterA is in Initialize state and RouterB is in Master state.

    [RouterA] interface gigabitethernet 2/0/0
    [RouterA-GigabitEthernet2/0/0] shutdown
    [RouterA-GigabitEthernet2/0/0] quit
    [RouterA] display vrrp6
    GigabitEthernet2/0/0 | Virtual Router 1
       State            : Initialize
       Virtual IP        : FE80::1
                           FC00::100
       Master IP         : ::
       PriorityRun       : 120
       PriorityConfig    : 120
       MasterPriority    : 0
       Preempt           : YES      Delay Time : 20 s
       TimerRun          : 100 cs
       TimerConfig       : 100 cs
       Virtual Mac       : 0000-5e00-0201 
       Check hop limit   : YES
       Config type       : normal-vrrp
       Backup-forward    : disabled
       Create time       : 2012-01-12 20:15:46 UTC+08:00
       Last change time  : 2012-01-12 20:24:16 UTC+08:00
    <RouterB> display vrrp6
    GigabitEthernet2/0/0 | Virtual Router 1
       State             : Master
       Virtual IP        : FE80::1
                           FC00::100
       Master IP         : FE80::218:82FF:FE68:7455
       PriorityRun       : 100
       PriorityConfig    : 100
       MasterPriority    : 100
       Preempt           : YES      Delay Time : 0 s
       TimerRun          : 100 cs
       TimerConfig       : 100 cs
       Virtual Mac       : 0000-5e00-0201 
       Check hop limit   : YES
       Config type       : normal-vrrp
       Backup-forward    : disabled
       Create time       : 2012-01-12 20:21:11 UTC+08:00
       Last change time  : 2012-01-12 20:25:35 UTC+08:00

    # Run the undo shutdown command on GE2/0/0 of RouterA. After 20s, run the display vrrp6 command on RouterA and RouterB. You can see that RouterA is in Master state and RouterB is in Backup state.

    [RouterA] interface gigabitethernet 2/0/0
    [RouterA-GigabitEthernet2/0/0] undo shutdown
    [RouterA-GigabitEthernet2/0/0] quit
    [RouterA] display vrrp6
    GigabitEthernet2/0/0 | Virtual Router 1
       State            : Master
       Virtual IP        : FE80::1
                           FC00::100
       Master IP         : FE80::218:82FF:FED3:2AF3
       PriorityRun       : 120
       PriorityConfig    : 120
       MasterPriority    : 120
       Preempt           : YES      Delay Time : 20 s
       TimerRun          : 100 cs
       TimerConfig       : 100 cs
       Virtual Mac       : 0000-5e00-0201 
       Check hop limit   : YES
       Config type       : normal-vrrp
       Backup-forward    : disabled
       Create time       : 2012-01-12 20:15:46 UTC+08:00
       Last change time  : 2012-01-12 20:17:46 UTC+08:00
    
    <RouterB> display vrrp6
    GigabitEthernet2/0/0 | Virtual Router 1
       State            : Backup
       Virtual IP        : FE80::1
                           FC00::100
       Master IP         : FE80::218:82FF:FED3:2AF3
       PriorityRun       : 100
       PriorityConfig    : 100
       MasterPriority    : 120
       Preempt           : YES      Delay Time : 0 s
       TimerRun          : 100 cs
       TimerConfig       : 100 cs
       Virtual Mac       : 0000-5e00-0201
       Check hop limit   : YES
       Config type       : normal-vrrp
       Backup-forward    : disabled
       Create time       : 2012-01-12 20:21:11 UTC+08:00
       Last change time  : 2012-01-12 20:23:11 UTC+08:00

Configuration Files

  • RouterA configuration file

    #
     sysname RouterA
    #
     ipv6
    #
    ospfv3 1
     router-id 1.1.1.1
    #
    interface GigabitEthernet1/0/0
     
     ipv6 enable
     ipv6 address 2002::1/64
     ospfv3 1 area 0.0.0.0
    #
    interface GigabitEthernet2/0/0
     
     ipv6 enable
     ipv6 address FC00::1/64
     ospfv3 1 area 0.0.0.0
     vrrp6 vrid 1 virtual-ip FE80::1 link-local
     vrrp6 vrid 1 virtual-ip FC00::100
     vrrp6 vrid 1 priority 120
     vrrp6 vrid 1 preempt-mode timer delay 20
    #
    return
  • RouterB configuration file

    #
     sysname RouterB
    #
     ipv6
    #
    ospfv3 1
     router-id 2.2.2.2
    #
    interface GigabitEthernet1/0/0
     
     ipv6 enable
     ipv6 address 2001::1/64
     ospfv3 1 area 0.0.0.0
    #
    interface GigabitEthernet2/0/0
     
     ipv6 enable
     ipv6 address FC00::2/64
     ospfv3 1 area 0.0.0.0
     vrrp6 vrid 1 virtual-ip FE80::1 link-local
     vrrp6 vrid 1 virtual-ip FC00::100
    #
    return
  • RouterC configuration file

    #
     sysname RouterC
    #
     ipv6
    #
    ospfv3 1
     router-id 3.3.3.3
    #
    interface GigabitEthernet1/0/0
     
     ipv6 enable
     ipv6 address 2002::2
     ospfv3 1 area 0.0.0.0
    #
    interface GigabitEthernet2/0/0
     
     ipv6 enable
     ipv6 address 2001::2/64
     ospfv3 1 area 0.0.0.0
    #
    interface GigabitEthernet3/0/0
     
     ipv6 enable
     ipv6 address 2003::2/64
     ospfv3 1 area 0.0.0.0
    #
    return
  • Switch configuration file

    #
    sysname Switch
    #
    vlan batch 10
    #
    interface GigabitEthernet1/0/0
     port hybrid pvid vlan 10
     port hybrid untagged vlan 10
    #
    interface GigabitEthernet2/0/0
     port hybrid pvid vlan 10
     port hybrid untagged vlan 10
    #
    return
Translation
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Updated: 2019-08-12

Document ID: EDOC1100034076

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