Aggregating Routes - Dell S6000–ON Configuration Manual

• 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]
Example of Viewing Aggregated Routes
In the show ip bgp command, aggregates contain an 'a' in the first column (shown in bold) and routes
suppressed by the aggregate contain an 's' in the first column.
Dell#show ip bgp
BGP table version is 0, local router ID is 10.101.15.13
Status codes: s suppressed, d damped, h history, * valid, > best
Path source: I - internal, a - aggregate, c - confed-external, r -
redistributed, n - network
Origin codes: i - IGP, e - EGP, ? - incomplete
Network
*> 7.0.0.0/29
*> 7.0.0.0/30
*>a 9.0.0.0/8
*> 9.2.0.0/16
*> 9.141.128.0/24 10.114.8.33
Dell#
204
Next Hop Metric LocPrf Weight Path
10.114.8.33 0
10.114.8.33 0
192.0.0.0
10.114.8.33
0 18508 ?
0 18508 ?
32768 18508 701 {7018 2686 3786} ?
0 18508 701 i
0 18508 701 7018 2686 ?
Border Gateway Protocol IPv4 (BGPv4)