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What would the ABR do with the information learned from the non-backbone area?

Your area border router (ABR) receives type 1.2 and 5 link-state advertisements (LSAs) from a non-backbone area.

What would the ABR do with the information learned from the non-backbone area?

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A.
The ABR will generate type 2 and 3 LSAs and flood type 5 LSAs to the backbone area

B.
The ABR will generate only type 3 LSAs and flood only type 5 LSAs to the backbone area

C.
The ABR will generate type 3 and 4 LSAs. And flood type 5 LSAs to the backbone area

D.
The ABR will generate only type 4 LSAs and flood only type 5 LSAs to the backbone area

6 Comments on “What would the ABR do with the information learned from the non-backbone area?

  1. Nguyen Duc Hoa says:

    No, Type 4 LSA is generated by ABR. ASBR still generates LSA 1 and has a bit to indicate it’s ASBR. After receiving this LSA, ABR will generate LSA 4 to announce to their neighbor that it has a path to ASRB. So C is correct.




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