Re-enabling OSPFv2 Graceful Restart

If you disable OSPFv2 graceful restart (GR), you can re-enable it. You can also change the maximum restart wait time from the default value of 120 seconds.
Note: GR is mutually exclusive to NSR.
  1. Enter the configure terminal command to access global configuration mode. 
    device# configure terminal
  2. Enter the router ospf command to enter OSPF router configuration mode and enable OSPFv2 globally. 
    device(config)# router ospf
  3. Enter the graceful-restart command to re-enable GR on the device. 
    device(config-ospf-router)# graceful-restart
  4. Enter the graceful-restart command with the restart-time parameter and specify a value to change the maximum restart wait time from the default value of 120 seconds. 
    device(config-ospf-router)# graceful-restart restart-time 240

The following example re-enables GR and changes the maximum restart wait time from the default value of 120 seconds to 240 seconds. 

device# configure terminal
device(config)# router ospf 
device(config-ospf-router)# graceful-restart
device(config-ospf-router)# graceful-restart restart-time 240
Parent topic: OSPFv2 Graceful Restart