Troubleshooting guide

3. Troubleshooting Functional Failures During Operation
100
3.11.3 No BGP4+ routing information exists
If BGP4+ 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 3-43: Failure analysis method for BGP4+
3 Check the status of every neighboring
router from the information in
Neighbor
List.
If the status of any neighboring router is other than
Full, go to No.
4.
If the status of every neighboring router is
Full, go to No. 5.
4 Check whether the OSPFv3 setting in the
configuration is correct.
If the configuration is correct, go to No. 5.
If the configuration is not correct, modify the configuration.
5 Check the route that has learned the
OSPFv3 route.
show ipv6 route all-routes
If the route is InActive, go to No. 6.
If the route does not exist, check whether the neighboring router is
advertising the OSPFv3 route.
6 Check whether the route is filtered in the
configuration.
Check whether the neighboring router is advertising the OSPFv3
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 Check the BGP4+ peer status.
show ipv6 bgp neighbors
If the peer status is other than Established, go to No. 2.
If the peer status is
Established, go to No. 3.
2 Check whether the BGP4+ 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 BGP4+ route has been
learned.
show ipv6 bgp received-routes
If the route exists but its status is not active, go to No. 4.
If the route does not exist, go to No. 5.
4 Check whether the routing information that
resolves the next hop address of the
BGP4+ route exists.
show ipv6 route
If the routing information that resolves the next hop address exists,
go to No. 5.
If the routing information that resolves the next hop address does
not exist, perform the failure analysis for the protocol for learning
the routing information.
No. Items to check and commands Action