Which two statements are correct about reflecting inet-vpn unicast prefixes in BGP route reflection? (Choose two.)
Which two statements are correct about reflecting inet-vpn unicast prefixes in BGP route reflection? (Choose two.)
Route reflectors add their cluster ID to the Cluster List attribute to prevent routing loops within the cluster when readvertising client routes. A BGP peer does not require any configuration changes to become a route reflector client, it simply needs to be configured on the route reflector itself.
A- is wrong RR add originator ID B- is correct Cluster-ID added for loop prevent C-Wrong , Cluster-ID is a BGP attribute D- is Correct so correct answer B,D
RR add cluster ID while advertising route to other RR but not by adding it to the as path. C and D are correct. B is wrong because cluster ID is an addition to the existing attribute. This is not a modification to the existing attribute.
CORRECT: B AND C B. Route reflectors add their cluster ID to the AS path when readvertising client routes: This statement is correct because a BGP route reflector uses a cluster ID to identify its cluster. When a route reflector readvertises routes from its clients, it appends its cluster ID to the Cluster List attribute. This helps in preventing routing loops within the cluster. C. Route reflectors do not change any existing BGP attributes by default when advertising routes: This statement is correct. By default, BGP route reflectors do not modify existing BGP attributes when they advertise routes to other peers. They simply reflect the routes while preserving the attributes as received from the client.