Troubleshooting guide

3. Troubleshooting Functional Failures During Operation
99
3.11 IPv6 unicast routing communication failures
3.11.1 RIPng routing information cannot be found
If RIPng routing information cannot be found in the routing information obtained by the Switch,
isolate the cause of the problem according to the failure analysis method described in the following
table.
Also, if network partitioning is used and the maximum number of routes is set by the
maximum
routes
configuration command, first, follow the failure analysis method described in 3.11.4 No
IPv6 routing information exists in the VRF.
Table 3-41: Failure analysis method for RIPng
3.11.2 OSPFv3 routing information cannot be found
If OSPFv3 routing information cannot be found in the routing information obtained by the Switch,
isolate the cause of the problem according to the failure analysis method described in the following
table.
Also, if network partitioning is used and the maximum number of routes is set by the
maximum
routes
configuration command, first, follow the failure analysis method described in 3.11.4 No
IPv6 routing information exists in the VRF.
Table 3-42: Failure analysis method for OSPFv3
No. Items to check and commands Action
1 Display the RIPng neighboring
information.
show ipv6 rip neighbor
If the interface of the neighboring router is not displayed, go to No.
2.
If the interface of the neighboring router is displayed, go to No. 3.
2 Check whether the RIPng setting in the
configuration is correct.
If the configuration is correct, go to No. 3.
If the configuration is not correct, modify the configuration.
3 Check whether the route is filtered in the
configuration.
Check whether the neighboring router is advertising the RIPng
route.
If the configuration is not correct, modify the configuration. For
details about the procedure for checking the filter configuration
information, see 3.25.1 Checking the filters and QoS
configuration information.
No. Items to check and commands Action
1 Displays the OSPFv3 interface status.
show ipv6 ospf interface
<Interface Name>
If the interface status is
DR or P to P, go to No. 3.
If the interface status is BackupDR or DR Other, go to No. 2.
If the interface status is Waiting, wait for a while and execute the
command again. Go to No. 1.
2 Check the neighboring router status with
DR from the information in
Neighbor
List.
If the neighboring router status with DR is other than
Full, go to
No. 4.
If the neighboring router status with DR is
Full, go to No. 5.