1066 CHAPTER 64: IPV6 OSPFV3 CONFIGURATION1.1.1.1 100 Full/DR 00:00:34 Eth1/0 02.2.2.2 0 2-Way/DROther 00:00:34 Eth1/0 03.3.3.3 2 Full/Backup 00:00:32 Eth1/0 0TroubleshootingOSPFv3 ConfigurationNo OSPFv3 NeighborRelationship EstablishedSymptomNo OSPF neighbor relationship can be established.AnalysisIf the physical link and lower protocol work well, check OSPF parametersconfigured on interfaces. The two neighboring interfaces must have the sameparameters, such as the area ID, network segment and mask, network type. If thenetwork type is broadcast, at least one interface must have a DR priority higherthan 0.Process steps1 Display neighbor information using the display ospfv3 peer command.2 Display OSPFv3 interface information using the display ospfv3 interfacecommand.3 Ping the neighbor router’s IP address to check connectivity.4 Check OSPF timers. The dead interval on an interface must be at least four timesthe hello interval.5 On a broadcast network, at least one interface must have a DR priority higher than0.Incorrect RoutingInformationSymptomOSPFv3 cannot find routes to other areas.AnalysisThe backbone area must maintain connectivity to all other areas. If a routerconnects to more than one area, at least one area must be connected to thebackbone. The backbone cannot be configured as a Stub area.In a Stub area, all routers cannot receive external routes, and all interfacesconnected to the Stub area must be associated with the Stub area.Process steps1 Use the display ospfv3 peer command to display OSPFv3 neighbors.2 Use the display ospfv3 interface command to display OSPFv3 interfaceinformation.3 Use the display ospfv3 lsdb command to display Link State Databaseinformation to check integrity.4 Display information about area configuration using the displaycurrent-configuration configuration command. If more than two areas areconfigured, at least one area is connected to the backbone.
