114
[RouterB-ospf-100] area 0
[RouterB-ospf-100-area-0.0.0.0] network 192.1.1.0 0.0.0.255
[RouterB-ospf-100-area-0.0.0.0] quit
# Configure Router C
<RouterC> system-view
[RouterC] router id 3.3.3.3
[RouterC] ospf 100
[RouterC-ospf-100] area 0
[RouterC-ospf-100-area-0.0.0.0] network 192.1.1.0 0.0.0.255
[RouterC-ospf-100-area-0.0.0.0] quit
3. Configure OSPF GR:
# Configure Router A as the non-IETF OSPF GR restarter: enable the link-local signaling capability,
the out-of-band re-synchronization capability, and non-IETF GR for OSPF process 100.
[RouterA-ospf-100] enable link-local-signaling
[RouterA-ospf-100] enable out-of-band-resynchronization
[RouterA-ospf-100] graceful-restart
[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
Verifying the configuration
# If all routers function steadily after the above configurations, enable OSPF GR event debugging, and
then restart the OSPF process using GR on Router A.
<RouterA> debugging ospf event graceful-restart
<RouterA> terminal monitor
<RouterA> terminal logging level 7
<RouterA> reset ospf 100 process graceful-restart
Reset OSPF process? [Y/N]:y
%Oct 21 15:29:28:727 2011 RouterA OSPF/5/OSPF_NBR_CHG: -MDC=1; OSPF 100 Neighbor
192.1.1.2(Ethernet1/1) from Full to Down.
%Oct 21 15:29:28:729 2011 RouterA OSPF/5/OSPF_NBR_CHG: -MDC=1; OSPF 100 Neighbor
192.1.1.3(Ethernet1/1) from Full to Down.
*Oct 21 15:29:28:735 2011 RouterA OSPF/7/DEBUG: -MDC=1;
OSPF 100 nonstandard GR Started for OSPF Router
*Oct 21 15:29:28:735 2011 RouterA OSPF/7/DEBUG: -MDC=1;
OSPF 100 created GR wait timer,timeout interval is 40(s).
*Oct 21 15:29:28:735 2011 RouterA OSPF/7/DEBUG: -MDC=1;
OSPF 100 created GR Interval timer,timeout interval is 120(s).
*Oct 21 15:29:28:758 2011 RouterA OSPF/7/DEBUG: -MDC=1;
OSPF 100 created OOB Progress timer for neighbor 192.1.1.3.
*Oct 21 15:29:28:766 2011 RouterA OSPF/7/DEBUG: -MDC=1;
OSPF 100 created OOB Progress timer for neighbor 192.1.1.2.
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