Operation Manual – IPv6 RoutingH3C S5500-EI Series Ethernet Switches Chapter 3 IPv6 OSPFv3 Configuration3-223.3.3.3 2 Full/Backup 00:00:32 Vlan100 03.9 Troubleshooting OSPFv3 Configuration3.9.1 No OSPFv3 Neighbor Relationship EstablishedI. SymptomNo OSPF neighbor relationship can be established.II. AnalysisIf the physical link and lower protocol work well, check OSPF parameters configured oninterfaces. The two neighboring interfaces must have the same parameters, such asthe area ID, network segment and mask, network type. If the network type is broadcast,at least one interface must have a DR priority higher than 0.III. 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 than0.3.9.2 Incorrect Routing InformationI. SymptomOSPFv3 cannot find routes to other areas.II. AnalysisThe backbone area must maintain connectivity to all other areas. If a router connects tomore than one area, at least one area must be connected to the backbone. Thebackbone cannot be configured as a Stub area.In a Stub area, all routers cannot receive external routes, and all interfaces connectedto the Stub area must be associated with the Stub area.III. Solution1) Use the display ospfv3 peer command to display OSPFv3 neighbors.2) Use the display ospfv3 interface command to display OSPFv3 interfaceinformation.
