Comprehensive and Detailed Explanation:
OSPFv2 (for IPv4) and OSPFv3 (for IPv6) LSAs differ in function and naming conventions.
Key Differences in OSPFv3 LSAs:
OSPFv3does not use ASBR-Summary-LSA. Instead, it introduces newInter-Area Prefix LSAs (Type 3) and Inter-Area Router LSAs (Type 4).
OSPFv2 ASBR-Summary-LSA (Type 4) is replaced in OSPFv3 by Inter-Area Router LSA (Type 4).
OSPFv3 LSA Types:
✔Router-LSA (Type 1)– Describes router interfaces and links.
✔Network-LSA (Type 2)– Describes broadcast network links.
✔Inter-Area Prefix LSA (Type 3)– Replaces Summary LSAs for routes.
✔Inter-Area Router LSA (Type 4)– Replaces ASBR Summary LSAs.
✔AS-External LSA (Type 5)– Describes external routes (same as OSPFv2).
SinceASBR-Summary-LSA (Type 4) does not exist in OSPFv3, the correct answer isA.
????Reference:Huawei HCIE Datacom – OSPFv3 LSA Types
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