OSPF LSA Types

Question 1

What are LSAs in OSPF?

Answer 1

Link-State Advertisements, which contain OSPF routing information

Question 2

What are the main types of LSAs?

Answer 2

Type 1 – Router LSA (Intra-area)
Type 2 – Network LSA (Generated by DRs)
Type 3 – Summary LSA (ABR-generated)
Type 4 – ASBR Summary LSA
Type 5 – External LSA (ASBR-generated)
Type 6 – Multicast OSPF (MOSPF, rarely used)
Type 7 – NSSA External LSA