Configure the cluster ID of the route reflector.īy default, a route reflector uses its router ID as the cluster ID. The complete route reflector concept can be found in RFC4456, which dates back to 2006. It would be hard to imagine multiple routers running BGP in full mesh topology these days when scalability is the key. Enable route reflection between clients.ĥ. Route reflectors became an essential part of any larger internet service provider’s environment. For more information about the ipv4-family vpnv4 command, see MPLS Command Reference.)Ĥ. A route reflector acts as a regular iBGP speaker when peering with other RRs and non-clients. (You can enter BGP-VPNv4 subaddress family view by executing the ipv4-family vpnv4 command in BGP view. Instead of configuring a confederation, another way to reduce the iBGP mesh is to configure a route reflector. However, this requirement does not scale well when there are many iBGP speakers. In BGP view, the command enables the router to reflect routes of the public network in BGP-VPNv4 subaddress family view, the command enables the router to reflect routes of the private network. BGP Route Reflector BGP requires that all iBGP speakers be fully meshed. The peer reflect-client command can be configured in both BGP view and BGP-VPNv4 subaddress family view. Carefully designed route-reflector configurations can drastically reduce the total number and connection cost of the required I-BGP sessions. Router show ip bgp summary BGP router identifier 192.168.3. Configure the router as a route reflector and specify a peer or peer group as its client. Route reflectors pass internal learned routes to a set of internal BGP neighbors. Ip v4-family vpn-instance vpn-instance-nameģ. To reduce the size of the mesh, configure BGP speakers as route reflectors.
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