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Which two actions will accomplish this task?

— Exhibit –

— Exhibit —

Refer to the Exhibit.
Referring to the exhibit, routers R1 through R5 exist in a fully-meshed IBGP group. You want the

routes received through EBGP on R1 to be advertised to the EBGP peer connected to R5. You
want the routes received through EBGP on R5 to be installed on R1; however, you do not want the
those routes to be advertised to the EBGP peer connected to R1.
Which two actions will accomplish this task? (Choose two.)

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A.
Implement an export policy on R5 to add the well-known no-export community to the EBGP
routes.

B.
Implement an export policy on R5 to add the well-known no-advertise community to the EBGP
routes.

C.
Implement a route reflector group and configure the no-client-reflect parameter on the route
reflector.

D.
Implement an import policy on R1 to add the well-known no-export community to the EBGP
routes.

Explanation:

5 Comments on “Which two actions will accomplish this task?

  1. jslaven says:

    Well-known Communities

    The following communities have global significance and their operations shall be implemented in any community-attribute-aware BGP speaker.

    NO_EXPORT (0xFFFFFF01)
    All routes RECEIVED carrying a communities attribute
    containing this value MUST NOT be advertised outside a BGP
    confederation boundary (a stand-alone autonomous system that
    is not part of a confederation should be considered a
    confederation itself).
    NO_ADVERTISE (0xFFFFFF02)
    All routes RECEIVED carrying a communities attribute
    containing this value MUST NOT be advertised to other BGP
    peers.




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  2. jkhan says:

    there must be a correction, routes received on R1 via IBGP not EBGP??? and the same on don’t want to advertised routes to IBGP peers connected to R1……??

    then the answer and logic seems correct……




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  3. ThereIsNoHope says:

    Seems like the question is trying to refer to R2 instead of R1 (i suppose this is one of the many typos in this dump), then the answer should be A & D




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