Which of the following statements about the multicast address used by OSPFv3 are correct?
All OSPF routers use FF08::5.
The DR uses FF08::6.
All OSPF routers use FF02::5.
The DR uses FF02::6.
OSPFv3 (used for IPv6) uses IPv6 multicast addresses for communication between routers:
FF02::5 — All OSPF routers.
FF02::6 — All OSPF Designated Routers (DRs) and Backup Designated Routers (BDRs).
FF08::x — These are used for organization-local scope, which is not applicable to standard OSPFv3 operation.
Therefore:
C. All OSPF routers use FF02::5 — Correct
D. The DR uses FF02::6 — Correct
A and B (FF08::x) — Incorrect. These addresses are not used by OSPFv3 in this context.
Correct answers: C and D
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