Re-enabling OSPFv3 graceful restart helper

If the OSPFv3 graceful restart (GR) helper has been disabled on a routing device, it can be re-enabled. GR helper mode can also be enabled with strict link-state advertisement (LSA) checking.
  1. Enter the configure terminal command to access global configuration mode. 
    device# configure terminal
  2. Enter the ipv6 router ospf command to enter OSPFv3 router configuration mode and enable OSPFv3 globally. 
    device(config)# ipv6 router ospf
  3. Enter the graceful-restart helper command and specify the strict-lsa-checking parameter to re-enable the GR helper with strict LSA checking. 
    device(config-ospf6-router)# graceful-restart helper strict-lsa-checking

The following example re-enables the GR helper with strict LSA checking. 

device# configure terminal
device(config)# ipv6 router ospf 
device(config-ospf6-router)# graceful-restart helper strict-lsa-checking
Parent topic: OSPFv3 Graceful Restart Helper