While designing a backup BGP solution, a network engineer wants to ensure that a single router with multiple connections prefers the routes from a specific connection over all others. Which BGP path selection attribute is considered first when selecting a route?
A. AS-LENGTH
B. MED
C. link bandwidth
D. WEIGHT
I believe this question is wrong, “A” would be the first from those options:
The following parameters are followed for BGP’s path selection:
Prefer the highest local-preference value.
Prefer the shortest AS-path length.
Prefer the lowest origin value.
Prefer the lowest MED value.
Prefer routes learned from an EBGP peer over an IBGP peer.
Prefer best exit from AS.
For EBGP-received routes, prefer the current active route.
Prefer routes from the peer with the lowest Router ID.
Prefer paths with the shortest cluster length.
Prefer routes from the peer with the lowest peer IP address. Steps 2, 6 and 12 are the RPD criteria.
You missed weight which is first on a cisco router.