350-001 · Question #154
Which information is carried in an OSPFv3 intra-area-prefix LSA?
The correct answer is A. IPv6 prefixes. OSPFv3 redesigns LSA responsibilities compared to OSPFv2. In OSPFv3, topology information (router links, adjacencies) is separated from addressing. The Intra-Area-Prefix LSA (Type 9) carries IPv6 prefix information for stub networks and transit links within an area - it is…
Question
Which information is carried in an OSPFv3 intra-area-prefix LSA?
Options
- AIPv6 prefixes
- Blink-local addresses
- Csolicited node multicast addresses
- DIPv6 prefixes and topology information
How the community answered
(37 responses)- A73% (27)
- B3% (1)
- C16% (6)
- D8% (3)
Explanation
OSPFv3 redesigns LSA responsibilities compared to OSPFv2. In OSPFv3, topology information (router links, adjacencies) is separated from addressing. The Intra-Area-Prefix LSA (Type 9) carries IPv6 prefix information for stub networks and transit links within an area - it is essentially where IPv6 addresses live in OSPFv3. Link-local addresses are advertised via the Link LSA (Type 8), not the intra-area-prefix LSA. Topology information is carried in Router LSAs (Type 1) and Network LSAs (Type 2), which in OSPFv3 contain no address information at all. Therefore, the intra-area-prefix LSA carries IPv6 prefixes only (A), not topology data, making D incorrect.
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