H3C S5600 SERIES Operation Manual page 339

Figure 5-12 A cluster containing two RRs
RR is unnecessary for clients that are already fully connected. You can disable routing information
reflection using corresponding commands provided by the switches.
The configuration to disable routing information reflection only applies to clients. That is, routing
information can still be reflected between a client and a non-client even if you disable routing
information reflection.
Confederation
Confederation is another way to limit the number of IBGP connections in an AS. It divides an AS into
multiple sub-ASs. The IBGP peers in each sub-AS are fully connected. The sub-ASs are connected
through EBGP connections, Figure 5-13 shows a confederation implementation.
Figure 5-13 A confederation implementation
5-12