Reference Guide
Troubleshooting OSPFv3
The system provides several tools to troubleshoot OSPFv3 operation on the switch. This section describes typical, OSPFv3
troubleshooting scenarios.
NOTE: The following troubleshooting section is not meant to be a comprehensive list, but only to provide examples of
typical troubleshooting checks.
● Have you enabled OSPF globally?
● Is the OSPF process active on the interface?
● Are the adjacencies established correctly?
●
Did you configure the interfaces for Layer 3 correctly?
● Is the router in the correct area type?
● Did you include the routes in the OSPF database?
● Did you include the OSPF routes in the routing table (not just the OSPF database)?
Some useful troubleshooting commands are:
● show ipv6 interfaces
● show ipv6 protocols
● debug ipv6 ospf events and/or packets
● show ipv6 neighbors
● show virtual links
● show ipv6 routes
Viewing Summary Information
To get general route, configuration, links status, and debug information, use the following commands.
● View the summary information of the IPv6 routes.
EXEC Privilege mode
show ipv6 route summary
● View the summary information for the OSPFv3 database.
EXEC Privilege mode
show ipv6 ospf database
● View the configuration of OSPFv3 neighbors.
EXEC Privilege mode
show ipv6 ospf neighbor
● View debug messages for all OSPFv3 interfaces.
EXEC Privilege mode
debug ipv6 ospf [event | packet] {type slot/port}
○ event: View OSPF event messages.
○ packet: View OSPF packets.
○ For a 10–Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port information (for
example, passive-interface te 2/1).
○ For a port channel, enter the keywords port-channel then a number from 1 to 255.
○ For a 40-Gigabit Ethernet interface, enter the keyword FortyGigabitEthernet then the slot/port information (for
example, passive-interface fo 2/3).
○ For a VLAN, enter the keyword vlan then a number from 1 to 4094 (for example, passive-interface vlan
2222). The system supports up to 4094 VLANs.
Open Shortest Path First (OSPFv2 and OSPFv3)
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