Which two statements are true regarding BGP route reflectors? (Choose two.)
- Routes learned from clients are reflected to all clients and non-clients
- Route reflectors eliminate the need for a full IBGP mesh
- Routes learned from EBGP peers are reflected to clients only
- All routers in the AS must be route reflector clients
- The cluster-list attribute prevents loops in EBGP
Explanation: According to the sources, route reflectors provide a scalable alternative to the standard BGP requirement for a full IBGP mesh within an Autonomous System (AS).
Normally, the IBGP split-horizon rule prevents a router from forwarding routes learned from one IBGP peer to another IBGP peer to prevent loops.
A route reflector modifies this behavior by allowing specific reflection rules: routes learned from clients are reflected to all clients and non-clients, while routes from non-clients are reflected to clients only.
By using route-reflector-client configurations, an administrator can ensure prefix propagation throughout the BGP backbone without maintaining a complex logical mesh, thereby eliminating the need for a full IBGP mesh.
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