Redistribution imports routes from one protocol to another. Redistribution sends route updates for a protocol-based route through another protocol. For example, if OSPFv3 routes exist in a router and they must travel through a BGP network, then configure redistribution of OSPFv3 routes through BGP. This configuration sends OSPFv3 routes to a router that uses BGP.
You can redistribute routes on a global basis between protocols on a single VRF instance (intraVRF).
Use the ipv6 ospf redistribute command to accomplish the (intraVRF) redistribution of routes through OSPF, so that OSPF redistribution occurs globally on all OSPF-enabled interfaces. This redistribution does not require a route policy, but you can use one for more control.
Note
For a redistribute policy (OSPFv3) using a route-map, even if a particular route is not explicitly allowed in the redistribution policy or out-policy with the route-map, then the route is implicitly denied.
In order to permit or deny only explicit routes, configure a policy with additional sequences, where, the last sequence permits all routes that are not explicitly permitted or denied.