#Router reflector full#

SR-A, configured as the route reflector, is responsible for reflection routes to its clients SR-B, SR-C, and SR-D. Non-clients in an AS must be fully meshed with each other.įigure: BGP configuration with route reflectors depicts the same network as Figure: Fully meshed BGP configuration but with route reflectors deployed to eliminate the IBGP mesh between SR-B, SR-C, and SR-D. If the clients within a cluster are fully meshed consider using theĭisable-client-reflect functionality. IBGP mesh between each other they only require IBGP sessions to the route reflectors in

#Router reflector full#

The clients within a cluster do not need to maintain a full

Each cluster containsĪt least one route reflector which is responsible for redistributing routes to itsĬlients. A large AS can be sub-divided into multiple clusters,Įach identified by a unique 32-bit cluster ID. An RR and its client peers form aĬluster. Routers configured as route reflectors to re-advertise routes fromĪ route reflector provides route reflection service to IBGP peers calledĬlients. BGP route reflection eliminates the need for a full IBGP mesh by allowing As discussed in the previous section a full IBGP mesh imposes specific scalingĬhallenges. This rule exists because of the assumption of a full IBGP mesh within In a standard BGP configuration a BGP route learned from one IBGP peer is not re-advertised toĪnother IBGP peer.