Enterasys Networks X-Pedition XSR CLI - Manual (Page 280)

BGP Configuration Commands
6-84 Configuring the Border Gateway Protocol
• Networks
• Neighbor parameters
• Routing policies
Syntax
router bgp autonomous-system
Syntax of the “no” Form
The no form of this command sets the default parameter ‐ disabled:
no router bgp autonomous-system
Mode
Global configuration: XSR(config)#
Examples
The following example activates the BGP routing process on a router belonging to AS 100. Note
that the XSR acquires Router configuration mode after executing the command:
XSR(config)#router bgp 100
XSR(config-router)#
The following example displays an error message when you try to activate another BGP process
when one is already running. In this example the BGP process was already activated with AS 100
when an attempt was made to activate it again with the AS 11.
XSR(config)#router bgp 11
% BGP Already running in AS 100
aggregate-address
This command creates an aggregate entry in a BGP routing table which is useful for reducing the
number of advertised routes between BGP routers. An aggregate entry in the table is a single
summarized route that represents multiple, more specific routes.
At least one of the more specific routes being aggregated must exist in the table for this command
to take effect.
Syntax
aggregate-address address mask [as-set][summary-only] [advertise-map map-
name][attribute-map map-name]
autonomous-system The XSR’s Autonomous System (AS) number, ranging from 1 to 65,535.
The AS number is included in routing updates traded by BGP routers.
address The aggregate IP address.
mask The aggregate IP mask.