Setting Bgp Router Reflector - Zte ZXR10 5900E Series User Manual

ZXR10 5900E Series User Manual (IPv4 Volume)

Setting BGP Router Reflector

For the BGP routers inside the same AS, the adjacency must be
established between every two routers according to requirements
and contribute to the formation of all interconnection. As the num-
ber of IBP routers increases, the number of neighbors will ascend
by n*(n-1)/2 (n refers to the number of the IBGP routers). Router
reflector and confederation is used to reduce workload of mainte-
nance and configuration.
Running of IBGP routers inside the AS, select one of preceding
routers as Router Reflector (RR). Take other IBGP routers as clients
which only establish adjacency with the RR. All clients pass the RR
to reflect routes. Thus, the number of neighbors decreases to
(n-1).
Set the neighbors as the Router Reflector client peers with the
neighbor <ip-address> router-refletor-client command.
AS100 has two router reflectors: R3 and R4. R5 and R6 are the
clients of R4. R1 and R2 are the clients of R3. This is shown in
Figure 21.
F 21 BGP ROUTER REFLECTOR CONFIGURATION
IGURE
R3 configuration:
ZXR10_R3(config)#router bgp 100
ZXR10_R3(config-router)#neighbor 2.2.2.2 remote-as 100
ZXR10_R3(config-router)#neighbor 2.2.2.2 route-reflector-client
ZXR10_R3(config-router)#neighbor 1.1.1.1 remote-as 100
ZXR10_R3(config-router)#neighbor 1.1.1.1 route-reflector-client
ZXR10_R3(config-router)#neighbor 7.7.7.7 remote-as 100
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