OSPFv3 LSA types
OSPFv3 sends routing information in LSAs, which, as defined in RFC 2740, have the following types:
Router-LSA—Originated by all routers. This LSA describes the collected states of the router's interfaces to an area, and is flooded throughout a single area only.
Network-LSA—Originated for broadcast and NBMA networks by the Designated Router. This LSA contains the list of routers connected to the network, and is flooded throughout a single area only.
Inter-Area-Prefix-LSA—Similar to Type 3 LSA of OSPFv2, originated by ABRs (Area Border Routers), and flooded throughout the LSA's associated area. Each Inter-Area-Prefix-LSA describes a route with IPv6 address prefix to a destination outside the area, yet still inside the AS (an inter-area route).
Inter-Area-Router-LSA—Similar to Type 4 LSA of OSPFv2, originated by ABRs and flooded throughout the LSA's associated area. Each Inter-Area-Router-LSA describes a route to ASBR (Autonomous System Boundary Router).
AS-external-LSA—Originated by ASBRs, and flooded throughout the AS (except Stub and NSSA areas). Each AS-external-LSA describes a route to another autonomous system. A default route can be described by an AS-external-LSA.
Link-LSA—A router originates a separate Link-LSA for each attached link. Link-LSAs have link-local flooding scope. Each Link-LSA describes the IPv6 address prefix of the link and Link-local address of the router.
Intra-Area-Prefix-LSA—Each Intra-Area-Prefix-LSA contains IPv6 prefix information on a router, stub area, or transit area information, and has area flooding scope. It was introduced because Router-LSAs and Network-LSAs do not contain address information.
RFC 5187 defines the Type 11 LSA, Grace-LSA. A Grace-LSA is generated by a GR (Graceful Restart) Restarter at reboot and transmitted on the local link. The restarter describes the cause and interval of the reboot in the Grace-LSA to tell its neighbors that it performs a GR operation.