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Implementing BGP on Cisco IOS XR Software
Where to Go Next
RC-79
Cisco IOS XR Routing Configuration Guide
neighbor 199.99.99.2
remote-as 700
In a BGP speaker in autonomous system 6003, the peers from autonomous systems 6001 and 6002 are
configured as special eBGP peers. Peer 200.200.200.200 is a normal eBGP peer from autonomous
system 701.
router bgp 6003
bgp confederation identifier 666
bgp confederation peers 6001 6002
neighbor 171.69.232.57
remote-as 6001
neighbor 171.69.232.55
remote-as 6002
neighbor 200.200.200.200
remote-as 701
The following is a part of the configuration from the BGP speaker 200.200.200.205 from autonomous
system 701 in the same example. Neighbor 171.69.232.56 is configured as a normal eBGP speaker from
autonomous system 666. The internal division of the autonomous system into multiple autonomous
systems is not known to the peers external to the confederation.
router bgp 701
neighbor 171.69.232.56
remote-as 666
neighbor 200.200.200.205
remote-as 701
BGP Route Reflector: Example
The following example shows how to use an address family to configure internal BGP peer 10.1.1.1 as
a route reflector client for both unicast and multicast prefixes:
router bgp 140
neighbor 10.1.1.1
remote-as 140
address-family ipv4 unicast
route-reflector-client
router bgp 140
neighbor 10.1.1.1
remote-as 140
address-family ipv4 multicast
route-reflector-client
Where to Go Next
For detailed information about BGP commands, see the Cisco IOS XR Routing Command Reference
document.