1398 ExtremeWare Software 7.3.0 Command Reference Guide
BGP Commands
configure bgp add aggregate-address
configure bgp add aggregate-address <ip address>/<mask length> {as-set |
as-match} {summary-only} {advertise-route-map <route-map>}
{attribute-route-map <route-map>}
Description
Configures a BGP aggregate route.
Syntax Description
Default
N/A.
Usage Guidelines
Route aggregation is the process of combining the characteristics of several routes so that they are
advertised as a single route. Aggregation reduces the amount of information that a BGP speaker must
store and exchange with other BGP speakers. Reducing the information that is stored and exchanged
also reduces the size of the routing table.
To use BGP route aggregation, follow these steps:
1 Enable aggregation using the following command:
enable bgp aggregation
2 Create an aggregate route using the following commands:
configure bgp add aggregate-address <ip address>/<mask length> {as-set | as-match}
{summary-only} {advertise-route-map <route-map>} {attribute-route-map <route-map>}
Example
The following command configures a BGP aggregate route:
configure bgp add aggregate-address 192.1.1.4/30
History
This command was first available in ExtremeWare 6.1.
Platform Availability
This command is available on all platforms.
ip address Specifies an IP address.
mask length Specifies a netmask length.
as-set Specifies to aggregate only the path attributes of the aggregate routes.
summary-only Specifies to send only aggregated routes to the neighbors.
advertise-route-map Specifies the route map used to select routes for this aggregated route.
attribute-route-map Specifies the route map used to set the attributes of the aggregated route.
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