Refer to the exhibit. After you apply the give configurations to R1 and R2 you notice that OSPFv3 fails to start.
Which reason for the problem is most likely true ?
A. The area numbers on R1 and R2 are mismatched
B. The IPv6 network addresses on R1 and R2 are mismatched
C. The autonomous system numbers on R1 and R2 are mismatched
D. The router ids on R1 and R2 are mismatched
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A is correct. In OSPF, the routers must have the same Ares ID to see each other.
area number 不一致
why?
According to OSPF logic, any two routers configured under OSPF algorithm will form an adjacency ( will “see each other”) ONLY when they will both have a connection to AREA 0. If a router has no physical connection to area 0, we can still connect it by means of a virtual link. Interface F0/0 of R2 is part of area 1 (not 0). In this case, it is not visible to R1. The picture above has an awful visual quality. We can only assume that R2 can be configured to connect to area 0 via A DIFFERENT interface.