OSPFv3 GR configuration example

As shown in Figure 108:

• Switch A, Switch B, and Switch C that reside in the same AS and the same OSPFv3 routing domain are GR capable.

• Switch A acts as the GR restarter. Switch B and Switch C act as the GR helpers, and synchronize their LSDBs with Switch A through GR.

1. Configure IPv6 addresses for interfaces. (Details not shown.)

2. Configure basic OSPFv3:

   # On Switch A, enable OSPFv3 process 1, enable GR, and set the router ID to 1.1.1.1.

   <SwitchA> system-view
   [SwitchA] ospfv3 1
   [SwitchA-ospfv3-1] router-id 1.1.1.1
   [SwitchA-ospfv3-1] graceful-restart enable
   [SwitchA-ospfv3-1] quit
   [SwitchA] interface vlan-interface 100
   [SwitchA-Vlan-interface100] ospfv3 1 area 1
   [SwitchA-Vlan-interface100] quit
   

   # On Switch B, enable OSPFv3 and set the router ID to 2.2.2.2. (By default, GR helper is enabled on Switch B.)

   <SwitchB> system-view
   [SwitchB] ospfv3 1
   [SwitchB-ospfv3-1] router-id 2.2.2.2
   [SwitchB-ospfv3-1] quit
   [SwitchB] interface vlan-interface 100
   [SwitchB-Vlan-interface100] ospfv3 1 area 1
   [SwitchB-Vlan-interface100] quit
   

   # On Switch C, enable OSPFv3 and set the router ID to 3.3.3.3. (By default, GR helper is enabled on Switch C.)

   <SwitchC> system-view
   [SwitchC] ospfv3 1
   [SwitchC-ospfv3-1] router-id 3.3.3.3
   [SwitchC-ospfv3-1] quit
   [SwitchC] interface vlan-interface 100
   [SwitchC-Vlan-interface100] ospfv3 1 area 1
   [SwitchC-Vlan-interface100] quit
   

# Perform a master/backup switchover on Switch A to trigger an OSPFv3 GR operation. (Details not shown.)