In OSPFv3, LSAs whose propagation range is an area have __ class.

Question

Options

• A9
• B
• C
• D

• A
  78% (29)
• B
  14% (5)
• C
  3% (1)
• D
  5% (2)

Explanation

In OSPFv3, each LSA's LS Type field contains scope bits (S1 and S2) that determine how far the LSA is flooded. OSPFv3 introduced two new LSA types to replace prefix information from OSPFv2: the Link-LSA (Type 8), which has link-local flooding scope, and the Intra-Area Prefix LSA (Type 9), which has area flooding scope. Type 9 carries all IPv6 prefix information associated with router and network LSAs and is flooded only within a single OSPF area, making area-scoped propagation the defining characteristic of class 9. The other answer choices are not provided in this question, indicating it functions as a fill-in-the-blank where the only valid response is the numeric type value 9.

Memory tip: Associate the two new OSPFv3 LSA types as a consecutive pair - Type 8 (Link-LSA) stays confined to the link, and Type 9 (Intra-Area Prefix LSA) reaches across the area. Link comes before area, 8 comes before 9.

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