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Question 18 - JN0-351 discussion

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You are troubleshooting a BGP routing issue between your network and a customer router and are reviewing the BGP routing policies. Which two statements are correct in this scenario? (Choose two.)

A.
Export policies are applied to routes in the RIB-ln table.
Answers
A.
Export policies are applied to routes in the RIB-ln table.
B.
Import policies are applied to routes in the RIB-Local table.
Answers
B.
Import policies are applied to routes in the RIB-Local table.
C.
Import policies are applied after the RIB-ln table.
Answers
C.
Import policies are applied after the RIB-ln table.
D.
Export policies are applied after the RIB-Local table.
Answers
D.
Export policies are applied after the RIB-Local table.
Suggested answer: C, D

Explanation:

In BGP, routing policies are used to control the flow of routing information between BGP peers1.

Option C suggests that import policies are applied after the RIB-In table.This is correct because import policies in BGP are applied to routes that are received from a BGP peer, before they are installed in the local BGP Routing Information Base (RIB-In)1.The RIB-In is a database that stores all the routes that are received from all peers1.

Option D suggests that export policies are applied after the RIB-Local table.This is correct because export policies in BGP are applied to routes that are being advertised to a BGP peer, after they have been selected from the local BGP Routing Information Base (RIB-Local)1.The RIB-Local is a database that stores all the routes that the local router is using1.

Therefore, options C and D are correct.

asked 18/09/2024
RJ MOTAUNG
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