Specifications

206 ExtremeWare XOS 10.1 Concepts Guide
Exterior Gateway Routing Protocols
Figure 37: Route reflectors
Route Confederations
BGP requires networks to use a fully-meshed router configuration. This requirement does not scale well,
especially when BGP is used as an interior gateway protocol. One way to reduce the size of a
fully-meshed AS is to divide the AS into multiple sub-autonomous systems and group them into a
routing confederation. Within the confederation, each sub-AS must be fully-meshed. The confederation is
advertised to other networks as a single AS.
EX_042
Client
Client
Route Reflector
Non-client
Cluster