124
[SwitchB] ospf 100
[SwitchB-ospf-100] area 0
[SwitchB-ospf-100-area-0.0.0.0] network 192.1.1.0 0.0.0.255
[SwitchB-ospf-100-area-0.0.0.0] quit
[SwitchB-ospf-1] quit
# Configure Switch C.
<SwitchC> system-view
[SwitchC] router id 3.3.3.3
[SwitchC] ospf 100
[SwitchC-ospf-100] area 0
[SwitchC-ospf-100-area-0.0.0.0] network 192.1.1.0 0.0.0.255
[SwitchC-ospf-100-area-0.0.0.0] quit
[SwitchC-ospf-1] quit
3. Configure OSPF GR:
# Configure Switch 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 capability for OSPF
process 100.
[SwitchA-ospf-100] enable link-local-signaling
[SwitchA-ospf-100] enable out-of-band-resynchronization
[SwitchA-ospf-100] graceful-restart
[SwitchA-ospf-100] quit
# Configure Switch B as the GR helper: enable the link-local signaling capability and the
out-of-band re-synchronization capability for OSPF process 100.
[SwitchB-ospf-100] enable link-local-signaling
[SwitchB-ospf-100] enable out-of-band-resynchronization
# Configure Switch C as the GR helper: enable the link-local signaling capability and the
out-of-band re-synchronization capability for OSPF process 100.
[SwitchC-ospf-100] enable link-local-signaling
[SwitchC-ospf-100] enable out-of-band-resynchronization
Verifying the configuration
# Enable OSPF GR event debugging and restart the OSPF process by using GR on Switch A.
<SwitchA> debugging ospf event graceful-restart
<SwitchA> terminal monitor
<SwitchA> terminal logging level 7
<SwitchA> reset ospf 100 process graceful-restart
Reset OSPF process? [Y/N]:y
%Oct 21 15:29:28:727 2011 SwitchA OSPF/5/OSPF_NBR_CHG: -MDC=1; OSPF 100 Neighbor
192.1.1.2(Vlan-interface100) from Full to Down.
%Oct 21 15:29:28:729 2011 SwitchA OSPF/5/OSPF_NBR_CHG: -MDC=1; OSPF 100 Neighbor
192.1.1.3(Vlan-interface100) from Full to Down.
*Oct 21 15:29:28:735 2011 SwitchA OSPF/7/DEBUG: -MDC=1;
OSPF 100 nonstandard GR Started for OSPF Router
*Oct 21 15:29:28:735 2011 SwitchA OSPF/7/DEBUG: -MDC=1;
OSPF 100 created GR wait timer,timeout interval is 40(s).
*Oct 21 15:29:28:735 2011 SwitchA OSPF/7/DEBUG: -MDC=1;
OSPF 100 created GR Interval timer,timeout interval is 120(s).
*Oct 21 15:29:28:758 2011 SwitchA OSPF/7/DEBUG: -MDC=1;
OSPF 100 created OOB Progress timer for neighbor 192.1.1.3.
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