Refer to the Exhibit.
In the exhibit, the 67.43.142/24 route is advertised using BGP to ISPs A and C. No policies have
been applied.
How will ISP B choose its best BGP route between ISP A and ISP C?
A.
It will choose the route with the shortest AS Path.
B.
It will choose the route that was received from the router with the lowest router ID.
C.
It will choose the route that was received from the router with the lowest peer ID.
D.
It will choose the first route received from its neighbor.
Explanation:
BGP route selection (taken from AJER book):
7. For EBGP-recived routes, prefer the current active route; othervise, prefer routes from the peer with the lowest RID
So it seems like D is correct.
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