Configuration rules
If the switch is to operate as an ASBR, you must enable redistribution; see Configuration procedures for OSPFv3. When you do so, ASBR capability is automatically enabled. For this reason, you should first configure route policy and redistribution filters on the ASBR. Otherwise, all possible external routes will be allowed to flood the domain.
Each IP routing interface on which you want OSPFv3 to run must be assigned to one of the defined areas. When a VLAN interface is assigned to an area, the IPv6 addresses configured on that VLAN are automatically included in the assignment.