Configure OSPFv3 Graceful Restart

OSPFv3 graceful restart is enabled by default. You can disable it, re-enable it, and change the restart interval.

1. Access global configuration mode.
   

   device# configure terminal

2. Enter IPv6 OSPF router configuration mode.
   

   device(config)# ipv6 router ospf

3. To disable graceful restart, run the following command.
   

   device(config-ipv6-router-ospf-vrf-default-vrf)# no graceful-restart

4. To re-enable graceful restart, run the following command.
   

   device(config-ipv6-router-ospf-vrf-default-vrf)# graceful-restart

5. To re-enable graceful restart and change the restart wait time (grace period), run the following command.
   

   device(config-ipv6-router-ospf-vrf-default-vrf)# graceful-restart restart-time 240

   This example changes the restart wait time to 240 seconds. The default is 120 seconds.