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Question 183 - 300-420 discussion

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An engineer is designing a BGP network for a large customer. To permit efficient scaling, the BGP domain is split into clusters. Which peering solution should be used between the route reflectors in different clusters for the BGP routes to be propagated appropriately?

A.

The route reflectors should be made dents of each other.

Answers
A.

The route reflectors should be made dents of each other.

B.

The route reflectors should be nonclients with regards to each other.

Answers
B.

The route reflectors should be nonclients with regards to each other.

C.

The route reflectors should not have any kind of BGP peering.

Answers
C.

The route reflectors should not have any kind of BGP peering.

D.

The route reflectors should have peering through another nonclient router.

Answers
D.

The route reflectors should have peering through another nonclient router.

Suggested answer: B

Explanation:

When configure multi-cluster of BGP RRs, RRs should peer with each RR as non-client according to CCIE routing TCP/IP volumn 2 @2001 page 127

- if the route was learned from nonclient IBGP peer, it is reflected to client only (here RR's route learnt from other RRs is able to reflect to its client)

- if the route was learned from a client, it is reflected to all nonclients and clients, except for the originating client. (routes learnt within the cluster can reflect to nonclient, RR)

- it the route was learnt from an EBGP peer, it is reflected to all nonclients and clients.

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asked 07/10/2024
ANTONIO M SILVA
41 questions
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