To implement OSPFv3 on a Cisco IOS platform the protocol basically just needs to be enabled on an interface with an IPv6 address with the following command:

Now an OSPFv3 process with the specified id is created and the protocol is enabled. The next two sections on configuring NBMA interfaces and forcing SPF calculation are optional.

You can customize OSPF for IPv6 for your network, but you likely will not need to do so. The defaults for OSPF in IPv6 are set to meet the requirements of most customers and features. If you must change the defaults, refer to Cisco IPv4 configuration guide and Cisco IPv6 command reference to find the appropriate syntax. Be careful when changing the defaults.

Example

The following example configures a (new) OSPFv3 process with id 1 and area 0.

Router(config-if)# ipv6 ospf 1 area 0