Dell Force10 S4820T S4820T Configuration Guide - Page 230

www.dell.com | support.dell.com Configure BGP route reflectors BGP route reflectors are intended for Autonomous Systems with a large mesh and they reduce the amount of BGP control traffic. With route reflection configured properly, IBGP routers are not fully meshed within a cluster but all receive routing information. Configure clusters of routers where one router is a concentration router and others are clients who receive their updates from the concentration router. Use the following commands in the CONFIGURATION ROUTER BGP mode to configure a route reflector. Command Syntax bgp cluster-id cluster-id neighbor {ip-address | peer-group-name} route-reflector-client Command Mode CONFIG-ROUTERBGP CONFIG-ROUTERBGP Purpose Assign an ID to a router reflector cluster. You can have multiple clusters in an AS. Configure the local router as a route reflector and the neighbor or peer group identified is the route reflector client. To view a route reflector configuration, use the show config command in the CONFIGURATION ROUTER BGP mode or show running-config bgp in EXEC Privilege mode. When you enable a route reflector, FTOS automatically enables route reflection to all clients. To disable route reflection between all clients in this reflector, use the no bgp client-to-client reflection command in CONFIGURATION ROUTER BGP mode. All clients should be fully meshed before you disable route reflection. Aggregate routes FTOS provides multiple ways to aggregate routes in the BGP routing table. At least one specific route of the aggregate must be in the routing table for the configured aggregate to become active. 230 | Border Gateway Protocol IPv4 (BGPv4)