3. Troubleshooting Functional Failures in Operation793.10 IPv6 Unicast Routing Communication Failure3.10.1 No RIPng Routing Information ExistsIsolate the problem according to the failure analysis method listed below if RIPng route information does not exist inthe displayed route information acquired by this system.Table 3-35: Failure Analysis of RIPng3.10.2 No OSPFv3 Routing Information ExistsIsolate the problem according to the failure analysis method listed below if OSPFv3 route information does not exist inthe displayed route information acquired by this system.Table 3-36: Failure Analysis of OSPFv3No. Troubleshooting Steps and Command Action1 RIPng neighboring information is displayed.show ipv6 rip neighborGo to No. 2 if the interface of a neighboring router is not displayed.Go to No. 3 if the interface of a neighboring router is displayed.2 Check to see if the RIPng setting is correct inconfiguration.Go to No. 3 if the configuration is correct.Correct the configuration if it is not correct.3 Confirm that the routing are not filtered byreferring to the configuration.Check to see if the neighboring router advertises the RIPng route.Correct the configuration if it is not correct.No. Troubleshooting Steps and Command Action1 Check the interface status of OSPFv3.show ipv6 ospf interface Name>Go to No. 3 if the interface status is DR.Go to No. 2 if the interface status is BackupDR or DR Other.Execute the command again after a certain period if the interface status is"Waiting." Go to No. 1.2 Check the status of a neighboring router of DRfrom Neighbor List.Go to No. 4 if the status of the neighboring router of DR is other than Full.Go to No. 5 if the status of the neighboring router of DR is Full.3 Check the status of all neighboring routers fromNeighbor List.Go to No. 4 if the status of some neighboring routers is other than Full.Go to No. 5 if the status of all neighboring routers is Full.4 Check to see if the OSPFv3 setting is correct inconfiguration.Go to No. 5 if the configuration is correct.Correct the configuration if it is not correct.5 Check the OSPFv3 routes that have beenlearned.show ipv6 route all-routesGo to No. 6 if the route is set to "InActive."If no route exists, check to see if the neighboring router advertises theOSPFv3 route.6 Confirm that the routing are not filtered byreferring to the configuration.Check to see if the neighboring router advertises the OSPFv3 route.Correct the configuration if it is not correct.
