Implementing OSPF on Cisco IOS XR Software
How to Implement OSPF on CiscoIOS XR Software
RC-221
Cisco IOS XR Routing Configuration Guide
Configuring OSPFv3 Graceful Restart
This section describes the following tasks for configuring a graceful restart of an OSPFv3 process:
•Enabling Graceful Restart, page RC-221
•Configuring the Maximum Lifetime of a Graceful Restart, pageRC-221
•Configuring the Minimum Time Required Between Restarts, pageRC-222
•Configuring the Helper Level of the Router, pageRC-223
•Displaying Information About Graceful Restart, page RC-224

Enabling Graceful Restart

This section describes how to enable an OSPFv3 graceful restart on the current router. By default, this
feature is disabled.
SUMMARY STEPS
1. configuration
2. router ospfv3
3. graceful-restart
DETAILED STEPS

Configuring the Maximum Lifetime of a Graceful Restart

This section describes the task of modifying the total time that a router can be in graceful restart mode.
The default lifetime is 95 seconds. The range is 90–3600 seconds.
Command or Action Purpose
Step1 config
Example:
RP/0/RP0/CPU0:single10-hfr#config
RP/0/RP0/CPU0:single10-hfr(config)
Enters global configuration mode.
Step2 router ospfv3 process-name
Example:
RP/0/RP0/CPU0:single10-hfr(config)# router
ospfv3 test
Enters router configuration mode for OSPFv3. The process
name is a WORD that uniquely identifies an OSPF routing
process. The process name is any alphanumeric string no
longer than 40 characters without spaces.
Step3 graceful-restart
Example:
RP/0/RP0/CPU0:single10-hfr(config-ospfv3)#grace
ful-restart
Enable graceful restart on the current router.