There are some configuration differences in Cisco IOS software when configuring OSPFv2 versus OSPFv3. However, it should be noted that these differences are not as significant as those between other versions of IPv4 routing protocols and their IPv6 counterparts.
In Cisco IOS software, OSPFv3 routing is enabled using the ipv6 router ospf [process ID] global configuration command. As is the case with OSPFv2, the OSPF process ID is locally significant to the router and does not need to be the same on adjacent routers in order for an adjacency to be established.
As is required for EIGRPv6 (which will be . . .
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