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Verifying IS-IS and OSPF Graceful Restart

To view graceful restart information for IS-IS and OSPF, configure traceoptions (see Tracking Graceful Restart Events).

Here is the output of a traceoptions log from an OSPF restarting router:

Oct  8 05:20:12 Restart mode - sending grace lsas
Oct  8 05:20:12 Restart mode - estimated restart duration timer triggered
Oct  8 05:20:13 Restart mode - Sending more grace lsas

Here is the output of a traceoptions log from an OSPF helper router:

Oct  8 05:20:14 Helper mode for neighbor 192.255.5.1
Oct  8 05:20:14  Received multiple grace lsa from 192.255.5.1

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