Reference Guide

278 | Access Control Lists (ACL)
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Prior to 7.8.1.0, names are up to 16 characters long.
Related
Commands
set as-path
c e s
Configure a filter to modify the AS path for BGP routes.
Syntax
set as-path prepend as-number [... as-number]
Parameters
Defaults
Not configured
Command Modes
ROUTE-MAP
Command
History
Usage
Information
You can prepend up to eight AS numbers to a BGP route.
This command influences best path selection in BGP by inserting a tag or AS number into the
AS_PATH attribute.
Related
Commands
set automatic-tag
c e s
Configure a filter to automatically compute the tag value of the route.
Syntax
set automatic-tag
To return to the default, enter no set automatic-tag.
Defaults
Not configured.
Command Modes
ROUTE-MAP
Command
History
show config Display the current configuration.
prepend as-number Enter the keyword prepend followed by up to eight AS numbers to be
inserted into the BGP path information.
Range: 1 to 65535
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Support added for S-Series
Version 7.5.1.0 Support added for C-Series
pre-Version 6.1.1.0 Introduced for E-Series
match as-path Redistribute routes that match an AS-PATH attribute.
ip as-path access-list Configure an AS-PATH access list.
neighbor filter-list Configure a BGP filter based on the AS-PATH attribute.
show ip community-lists Display configured IP Community access lists.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Support added for S-Series