An engineer is suspecting an issue where there is a mismatch between RIB and FIB. The same prefix is learned via different routing protocols. Based on this output, from which protocol originated the…

The correct answer is D. BGP. The key information here is the peer_as field in the output, which shows peer_as: 65100. This indicates that the route was learned from a BGP peer with the Autonomous System (AS) number BGP uses AS numbers to identify the origin of routes, and the presence of a peer_as field…

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Question

An engineer is suspecting an issue where there is a mismatch between RIB and FIB. The same prefix is learned via different routing protocols. Based on this output, from which protocol originated the prefix that was installed in the FIB?

Options

AOSPF
BIS-IS
CEIGRP
DBGP

How the community answered

(61 responses)

A
5% (3)
B
2% (1)
C
10% (6)
D
84% (51)

Explanation

The key information here is the peer_as field in the output, which shows peer_as: 65100. This indicates that the route was learned from a BGP peer with the Autonomous System (AS) number BGP uses AS numbers to identify the origin of routes, and the presence of a peer_as field confirms that the route was learned via BGP.

Topics

#RIB FIB mismatch#BGP route selection#administrative distance#routing protocol

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