Route Reflector - Allied Telesis SwitchBlade x908 Series Software Reference Manual

BGP Configuration

Route Reflector

Use Route Reflector to reduce the iBGP mesh inside an AS. In this example, Peer 2, Peer 5 and
Peer 4 would have to maintain a full mesh among themselves but by making Peer 5 the Route
Reflector, Peer 2 (Client1) has an iBGP session with the Route Reflector only and not with Peer
4 (Client 2). The routes learned from Peer 2 are advertised to the other clients and to iBGP
peers outside the cluster; the iBGP routes learned from iBGP peers outside the cluster are
advertised to Peer 2. This reduces the iBGP peer connections in AS1.
Route Reflector (Peer 5)
awplus#configure terminal
awplus(config)#router bgp 1
awplus(config-router)#neighbor 10.10.10.50
remote-as 1
awplus(config-router)#neighbor 10.10.10.50
route-reflector client
awplus(config-router)#neighbor 10.10.11.50
remote-as 1
awplus(config-router)#neighbor 10.10.11.50
route-reflector client
37.6
AS1
Peer 1
Peer 2
10.10.10.50
RR Client 1
Peer 3
Software Reference for SwitchBlade® x908, x900 and x600 Series Switches
TM
AlliedWare Plus Operating System - Software Version 5.3.1
Peer 4
RR Client 2
10.10.11.50
10.10.11.10
10.10.10.10
Peer 5
Route Reflector
Enter the Configure mode.
Define the routing process. The number 1 specifies the
AS number of Peer 5.
Define BGP neighbors. 10.10.10.50 is the IP address
of one of the neighbors (Peer 2) and 1 is the neighbor's
AS number.
Configure Peer 5 as the Route-Reflector (RR) and
neighbor Peer 2 as its client.
Define BGP neighbor. 10.10.11.50 is the IP address
of one of the neighbors (Peer 4) and 1 is the neighbor's
AS number.
Configure Peer 5 as the Route-Reflector (RR) and
neighbor Peer 4 as its client.
Peer 6
bgp_4
C613-50007-01 REV B