What is a purpose of the OSPFv3 type 8 and type 9 LSAs?
- advertise default and external routes learned from other protocols
- eliminate the need for SPF calculations when interface addresses are added or changed
- allow area routers to locate ASBRs in other areas
- advertise NSSA LSAs for redistributed routes in an area
Explanation: Two new LSA types are added to OSPFv3, type 8, link-local LSA, and type 9, interarea prefix LSA. These two LSAs advertise unicast prefixes and prevent the need for OSPF calculations when interface addresses are added or changed.
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