show ip ospf
Configuring NSF Settings for OSPF (PCM6220 and PCM6348 Only)
Beginning in Privileged EXEC mode, use the following commands to
configure the non-stop forwarding settings for OSPF.
nsf [ietf ] helper strict-lsa-
nsf [ietf ] restart-interval
nsf helper [planned-only] Allow OSPF to act as a helpful neighbor for a restarting
Exit to Global Config mode.
Exit to Privileged EXEC mode.
View OSPF configuration and status information,
including route distribution information.
Enter global configuration mode.
Enter OSPF configuration mode.
Require that an OSPF helpful neighbor exit helper mode
whenever a topology change occurs. Use the ietf keyword
to distinguish the IETF standard implementation of
graceful restart from other implementations.
Configure the length of the grace period on the restarting
keyword is the number of seconds that the
restarting router asks its neighbors to wait before exiting
helper mode. The restarting router includes the restart
interval in its grace LSAs (range 1–1800 seconds)
router. Include the planned-only keyword to indicate
that OSPF should only help a restarting router
performing a planned restart.
Configuring OSPF and OSPFv3