Dell S4048T, Руководство по настройке

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Configuring BGP Route Reflectors
BGP route reflectors are intended for ASs with a large mesh; they reduce the amount of BGP control traffic.
NOTE: Dell Networking recommends not using multipath and add path simultaneously in a route
reflector.
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.
To configure a route reflector, use the following commands.
• Assign an ID to a router reflector cluster.
CONFIG-ROUTER-BGP mode
bgp cluster-id cluster-id
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.
CONFIG-ROUTER-BGP mode
neighbor { ip-address | peer-group-name } route-reflector-client
When you enable a route reflector, Dell Networking OS 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 must be fully meshed before
you disable route reflection.
To view a route reflector configuration, use the
show config
command in CONFIGURATION ROUTER BGP
mode or the
show running-config bgp
in EXEC Privilege mode.
Aggregating Routes
Dell Networking OS 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.
To aggregate routes, use the following command.
AS_SET includes AS_PATH and community information from the routes included in the aggregated route.
• Assign the IP address and mask of the prefix to be aggregated.
CONFIG-ROUTER-BGP mode
aggregate-address ip-address mask [advertise-map map-name ] [as-set] [attribute-
map map-name ] [summary-only] [suppress-map map-name ]
Border Gateway Protocol IPv4 (BGPv4) 256