Refer to the exhibit. Which attribute can router 1 alter so that only other iBGP peers prefer to use 192.168.4.2 as the next hop for route 192.168.3.0/24?

The correct answer is B. local preference. Local preference is the correct attribute because it is an iBGP-only attribute-it is propagated to all iBGP peers within the same AS but is never sent to eBGP neighbors. By setting the local preference on routes learned via 192.168.4.2 as the next hop, Router 1 can influence…

Routing Policy and Manipulation

Question

Exhibit

Options

AMED
Blocal preference
Corigin
Dweight

How the community answered

(40 responses)

A
3% (1)
B
88% (35)
C
5% (2)
D
5% (2)

Explanation

Local preference is the correct attribute because it is an iBGP-only attribute-it is propagated to all iBGP peers within the same AS but is never sent to eBGP neighbors. By setting the local preference on routes learned via 192.168.4.2 as the next hop, Router 1 can influence which next hop all other iBGP peers in the AS prefer for 192.168.3.0/24, without affecting external BGP behavior. Weight (choice D) is locally significant to the router that sets it and is never advertised to any BGP peer, so it cannot influence other routers' path selection. MED (choice A) is used to influence inbound traffic from external neighbors, not iBGP path selection within an AS. Origin (choice C) affects path selection but is not the right tool for next-hop preference among iBGP peers.

Topics

#BGP attributes#Local Preference#iBGP#BGP path selection

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