H3C Technologies H3C SR8800 - Manual (Page 141)

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[RouterA-ospf-100] return
# Configure Router B as the GR Helper: enable the link-local signaling capability and the
out-of-band re-synchronization capability for OSPF process 100.
[RouterB-ospf-100] enable link-local-signaling
[RouterB-ospf-100] enable out-of-band-resynchronization
# Configure Router C as the GR Helper: enable the link-local signaling capability and the
out-of-band re-synchronization capability for OSPF process 100.
[RouterC-ospf-100] enable link-local-signaling
[RouterC-ospf-100] enable out-of-band-resynchronization
4. Verify the configuration:
# If all routers function steadily after the above configurations, enable OSPF Graceful Restart event
debugging, and then restart the OSPF process using GR on Router A.
debugging ospf event graceful-restart
terminal monitor
terminal debugging
reset ospf 100 process graceful-restart
Warning : Reset OSPF process? [Y/N]:y
%Dec 12 09:36:12:500 2006 RouterA RM/3/RMLOG:OSPF-NBRCHANGE: Process 1, Neighbour
192.1.1.1(GigabitEthernet1/1/1) from Full to Down
OSPF 1: Intf 192.1.1.1 Rcv InterfaceDown State BackupDR -> Down.
OSPF 1 nonstandard GR Started for OSPF Router
OSPF 1 notify RM that OSPF process will enter GR.
OSPF 1 created GR wait timer, timeout interval is 40(s).
OSPF 1 created GR Interval timer,timeout interval is 120(s).
OSPF 1: Intf 192.1.1.1 Rcv InterfaceUp State Down -> Waiting.
OSPF 1: Intf 192.1.1.1 Rcv BackupSeen State Waiting -> BackupDR.
OSPF 1 created OOB Progress timer for neighbor 192.1.1.2.
OSPF 1 restarted OOB Progress timer for neighbor 192.1.1.2.
OSPF 1 restarted OOB Progress timer for neighbor 192.1.1.2.
%Oct 22 09:36:12:566 2008 RouterA RM/3/RMLOG:OSPF-NBRCHANGE: Process 1, Neighbour
192.1.1.2(GigabitEthernet1/1/1) from Loading to Full
OSPF 1 restarted OOB Progress timer for neighbor 192.1.1.2.
OSPF 1 deleted OOB Progress timer for neighbor 192.1.1.2.
OSPF 1 Gr Wait Timeout timer fired.
OSPF 1 deleted GR wait timer.
OSPF 1 deleted GR Interval timer.
OSPF 1 GR Completed for OSPF Router
OSPF 1 notified RM that OSPF process left GR.
RM notified that all protocol left GR.
OSPF 1 started flushing STALE LSA after all protocol left GR.
OSPF 1: Flush Stale Area LSAs
OSPF 1: Start Flush Stale ASE + NSSA LSAs
OSPF 1: End Flush Stale ASE + NSSA LSAs
Router A completes GR with the help of Router B.