Dell EMC SmartFabric OS10 User Guide Release 10.5.0

BGP route reflectors are intended for ASs with a large mesh. 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 the others are clients who receive their updates from the concentration router.

1. Assign an ID to a router reflector cluster in ROUTER-BGP mode. You can have multiple clusters in an AS.

   cluster-id cluster-id

2. Assign a neighbor to the router reflector cluster in ROUTER-BGP mode.

   neighbor {ip-address}

3. Configure the neighbor as a route-reflector client in ROUTER-NEIGHBOR mode, then return to ROUTER-BGP mode.

   route-reflector-client
   exit

4. Assign a peer group template as part of the route-reflector cluster in ROUTER-BGP mode.

   template template-name

5. Configure the template as the route-reflector client in ROUTER-TEMPLATE mode.

   route-reflector-client

When you enable a route reflector, the system 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 ROUTER-BGP mode. You must fully mesh all the clients before you disable route reflection.

Configure BGP route reflector

OS10(config)# router bgp 102
OS10(conf-router-bgp-102)# cluster-id 4294967295
OS10(conf-router-bgp-102)# neighbor 32.1.1.2
OS10(conf-router-neighbor)# route-reflector-client
OS10(conf-router-neighbor)# exit
OS10(conf-router-bgp-102)# template zanzibar
OS10(conf-router-template)# route-reflector-client