116
OSPF 100 deleted GR wait timer.
%Oct 21 15:29:30:920 2011 SwitchA OSPF/5/OSPF_NBR_CHG: OSPF 100 Neighbor
192.1.1.2(Vlan-interface100) from Full to Down.
%Oct 21 15:29:30:921 2011 SwitchA OSPF/5/OSPF_NBR_CHG: OSPF 100 Neighbor
192.1.1.3(Vlan-interface100) from Full to Down.
%Oct 21 15:29:33:815 2011 SwitchA OSPF/5/OSPF_NBR_CHG: OSPF 100 Neighbor
192.1.1.3(Vlan-interface100) from Loading to Full.
%Oct 21 15:29:35:578 2011 SwitchA OSPF/5/OSPF_NBR_CHG: OSPF 100 Neighbor
192.1.1.2(Vlan-interface100) from Loading to Full.
The output shows that Switch A completes GR.
OSPF NSR configuration example
Network requirements
As shown in Figure 30, Switch S, Switch A, and Switch B belong to the same OSPF routing domain.
Enable OSPF NSR on Switch S to ensure correct routing when an active/standby switchover occurs
on Switch S.
Figure 30 Network diagram
Configuration procedure
1. Configure IP addresses and subnet masks for interfaces on the switches. (Details not shown.)
2. Configure OSPF on the switches to ensure the following: (Details not shown.)
{ Switch S, Switch A, and Switch B can communicate with each other at Layer 3.
{ Dynamic route update can be implemented among them with OSPF.
3. Enable OSPF NSR on Switch S.
<SwitchS> system-view
[SwitchS] ospf 100
[SwitchS-ospf-100] non-stop-routing
[SwitchS-ospf-100] quit
Verifying the configuration
# Perform an active/standby switchover on Switch S.
[SwitchS] placement reoptimize
Predicted changes to the placement
Program Current location New location
---------------------------------------------------------------------
lb 0/0 0/0
lsm 0/0 0/0
slsp 0/0 0/0
rib6 0/0 0/0
routepolicy 0/0 0/0
rib 0/0 0/0
staticroute6 0/0 0/0
Loop 0
22.22.22.22/32
Vlan-int100
12.12.12.1/24
Vlan-int100
12.12.12.2/24
Vlan-int200
14.14.14.2/24
Vlan-int200
14.14.14.1/24
Loop 0
44.44.44.44/32
Switch S
Switch A
Switch B
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