Refer to the Exhibit.
In the exhibit, the 10.100/16 prefix is introduced at autonomous system 1 (AS1) and propagated
through to AS3. Router A in AS3 receives two different paths to these prefixes, one through AS2
and the other through AS4. No BGP attributes have been altered.
Which path would router A prefer for the 10.100/16 prefix?
A.
the route with the lowest interface address for the EBGP peering session
B.
the route with the lowest local preference
C.
the route to the EBGP peer that has the lowest RID
D.
the route from the EBGP peer that arrived first
Explanation:
C is correct
For BGP, prefer the path from the peer with the lowest router ID. For any path with an originator ID attribute, substitute the originator ID for the router ID during router ID comparison.
For BGP, prefer the path with the shortest cluster list length. The length is 0 for no list.
For BGP, prefer the path from the peer with the lowest peer IP address.
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