Troubleshooting Ospfv3 Configuration; No Ospfv3 Neighbor Relationship Established; Incorrect Routing Information - HP 6125G Configuration Manual

After all switches function properly, perform a master/slave switchover on Switch A to trigger an
OSPFv3 GR operation.

Troubleshooting OSPFv3 configuration

No OSPFv3 neighbor relationship established

Symptom
No OSPF neighbor relationship can be established.
Analysis
If the physical link and lower protocol function properly, verify OSPF parameters configured on interfaces.
The two neighboring interfaces must have the same parameters, such as the area ID, network segment
and mask, and network type. If the network type is broadcast, at least one interface must have a DR
priority higher than 0.
Process steps
Use the display ospfv3 peer command to display neighbor information.
1.
Use the display ospfv3 interface command to display OSPFv3 interface information.
2.
Ping the neighbor router's IP address to verify connectivity.
3.
Verify OSPF timers. The dead interval on an interface must be at least four times the hello interval.
4.
On a broadcast network, at least one interface must have a DR priority higher than 0.
5.

Incorrect routing information

Symptom
OSPFv3 cannot find routes to other areas.
Analysis
The backbone area must maintain connectivity to all other areas. If a router connects to more than one
area, at least one area must be connected to the backbone. The backbone cannot be configured as a
stub area.
In a stub area, routers cannot receive external routes, and interfaces connected to the stub area must be
associated with the stub area.
Solution
Use the display ospfv3 peer command to display OSPFv3 neighbors.
1.
Use the display ospfv3 interface command to display OSPFv3 interface information.
2.
Use the display ospfv3 lsdb command to display LSDB information to check integrity.
3.
Use the display current-configuration configuration command to display information about area
4.
configuration. If more than two areas are configured, at least one area is connected to the
backbone.
In a stub area, all routers are configured with the stub command.
5.
If a virtual link is configured, use the display ospf vlink command to check the neighbor state.
6.
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