Ospf nsr configuration example, Network requirements, Configuration procedure – H3C Technologies H3C S5560 Series Switches User Manual
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*Oct 21 15:29:28:758 2011 SwitchA OSPF/7/DEBUG:
OSPF 100 created OOB Progress timer for neighbor 192.1.1.3.
*Oct 21 15:29:28:766 2011 SwitchA OSPF/7/DEBUG:
OSPF 100 created OOB Progress timer for neighbor 192.1.1.2.
%Oct 21 15:29:29:902 2011 SwitchA OSPF/5/OSPF_NBR_CHG: OSPF 100 Neighbor
192.1.1.2(Vlan-interface100) from Loading to Full.
*Oct 21 15:29:29:902 2011 SwitchA OSPF/7/DEBUG:
OSPF 100 deleted OOB Progress timer for neighbor 192.1.1.2.
%Oct 21 15:29:30:897 2011 SwitchA OSPF/5/OSPF_NBR_CHG: OSPF 100 Neighbor
192.1.1.3(Vlan-interface100) from Loading to Full.
*Oct 21 15:29:30:897 2011 SwitchA OSPF/7/DEBUG:
OSPF 100 deleted OOB Progress timer for neighbor 192.1.1.3.
*Oct 21 15:29:30:911 2011 SwitchA OSPF/7/DEBUG:
OSPF GR: Process 100 Exit Restart,Reason : DR or BDR change,for neighbor : 192.1.1.3.
*Oct 21 15:29:30:911 2011 SwitchA OSPF/7/DEBUG:
OSPF 100 deleted GR Interval timer.
*Oct 21 15:29:30:912 2011 SwitchA OSPF/7/DEBUG:
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
, 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.
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