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BLADEOS 6.5.2 Application Guide
BMD00220, October 2010 Chapter 20: OSPF 299
OSPFv3 Uses Independent Command Paths
Though OSPFv3 and OSPFv2 are very similar, they are configured independently. They each have
their own separate menus in the CLI, and their own command paths in the ISCLI. OSPFv3 base
menus and command paths are located as follows:
In the CLI
In the ISCLI
OSPFv3 Identifies Neighbors by Router ID
Where OSPFv2 uses a mix of IPv4 interface addresses and Router IDs to identify neighbors,
depending on their type, OSPFv3 configuration consistently uses a Router ID to identify all
neighbors.
Although Router IDs are written in dotted decimal notation, and may even be based on IPv4
addresses from an original OSPFv2 network configuration, it is important to realize that Router IDs
are not IP addresses in OSPFv3, and can be assigned independently of IP address space. However,
maintaining Router IDs consistent with any legacy OSPFv2 IPv4 addressing allows for easier
implementation of both protocols.
Other Internal Improvements
OSPFv3 has numerous improvements that increase the protocol efficiency in addition to supporting
IPv6 addressing. These improvements change some of the behaviors in the OSPFv3 network and
may affect topology consideration, but have little direct impact on configuration. For example:
Addressing fields have been removed from Router and Network LSAs.
Link-local flooding scope has been added, along with a Link LSA. This allows flooding
information to relevant local neighbors without forwarded it beyond the local router.
Flexible treatment of unknown LSA types to make integration of OSPFv3 easier.
>> # /cfg/l3/ospf3 (OSPFv3 config menu)
>> # /info/l3/ospf3 (OSPFv3 information menu)
>> # /stats/l3/ospf3 (OSPFv3 statistics menu)
RS G8124(config)# ipv6 router ospf (OSPFv3 router config mode)
RS G8124(config-router-ospf3)# ?
RS G8124(config)# interface ip <Interface number> (Configure OSPFv3)
RS G8124(config-ip-if)# ipv6 ospf ? (OSPFv3 interface config)
RS G8124# show ipv6 ospf ? (Show OSPFv3 information)