LSA types. Type Code Description 1 Router LSA 2 Network LSA 3 Network Summary LSA 4 ASBR Summary LSA 5 AS External LSA 6 Group Membership LSA 7 NSSA External LSA 8 External Attributes LSA 9 Opaque LSA (link-local scope) 10 Opaque LSA (area-local scope) 11 Opaque LSA (AS scope)