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Will redistributed RIP routes from OSPF Area 2 be allowed in Area 1?

Refer to the exhibit. Will redistributed RIP routes from OSPF Area 2 be allowed in Area 1?

Select the best response.

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A.
Because Area 1 is an NSSA, redistributed RIP routes will not be allowed.

B.
Redistributed RIP routes will be allowed in Area 1 because they will be changed into type 5 LSAs in Area 0 and passed on into Area 1.

C.
Because NSSA will discard type 7 LSAs, redistributed RIP routes will not be allowed in Area 1.

D.
Redistributed RIP routes will be allowed in Area 1 because they will be changed into type 7 LSAs in Area 0 and passed on into Area 1.

E.
RIP routes will be allowed in Area 1 only if they are first redistributed into EIGRP.

One Comment on “Will redistributed RIP routes from OSPF Area 2 be allowed in Area 1?

  1. Charles says:

    Answer: A

    Explanation

    Area 1 is a NSSA so we can inject EIGRP routes into this area with Type 7 LSAs. Notice that Type 7 LSAs can only be existed in a NSSA. The NSSA ABR of area 1 must converted it into LSA Type 5 before flooding to the whole OSPF domain.

    When redistribute RIP into area 2, LSA Type 5 will be created an sent through area 0. But a NSSA is an extension of a stub area. The stub area characteristics still exist, which includes no type 5 LSAs allowed.

    Note: A stub area only allows LSA Type 1, 2 and 3.




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