OSPFv3 and IPv6

OSPF version 3 (OSPFv3) includes support for IPv6 and can only be configured via the CLI. Unlike its predecessor, OSPFv2, which uses IPv4, OSPFv3 utilizes IPv6 addresses. However, the area numbers in OSPFv3 still adhere to the 32-bit numbering system of OSPFv2, as described in RFC 2740. Likewise, the router ID and area ID are in the same format as OSPFv2. See OSPF for more information.

For IPv6, the main difference in OSPFv3 is that rather than using a network statement to enable OSPFv3 on an interface, you define OSPF6 (OSPF for IPv6) interfaces, which are bound to the interface and area. This configuration must be done in the CLI, as follows:

config router ospf6
    set router-id <id>
    config area
        edit <id>
        next 
    end
    config ospf6-interface
        edit <name>
            set interface <string>
            set area-id <id>
        next
    end
end

Note that OSPFv3 neighbors use link-local IPv6 addresses, but with broadcast and point-to-point network types, and neighbors are automatically discovered. You only have to manually configure neighbors when using non-broadcast network types.

See Basic OSPFv3 example for a sample configuration.