Configuring Graceful OSPFv3 Restart
-
Configure a router to perform graceful OSPFv3 restart:
configure ospfv3 restart [none | planned | unplanned | both]
Since a router can act as a restart helper router to multiple neighbors, you will specify which neighbors to help.
-
Configure a router interface to act as a graceful OSPFv3
restart helper:
configure ospfv3 [[vlan | tunnel] all | {vlan} vlan-name | {tunnel} tunnel-name | area area-identifier] restart-helper [none | planned | unplanned | both]configure ospfv3 virtual-link {routerid} router_identifier {area} area_identifier timer {retransmit-interval} retransmit_interval {transit-delay} transit_delay {hello-interval} hello_interval {dead-interval} dead_interval
-
The graceful restart period sent out to helper routers can
be configured with the following command:
configure ospfv3 restart grace-period seconds
By default, a helper router will terminate graceful restart if received LSAs would affect the restarting router.
This will occur when the restart-helper receives an LSA that will be flooded to the restarting router or when there is a changed LSA on the restarting router's retransmission list when graceful restart is initiated.
- Disable or enable helper router LSA check: