Reference Guide

252 | Access Control Lists (ACL)
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ip as-path access-list
e
Enter the AS-PATH ACL mode and configure an access control list based on the BGP AS_PATH
attribute.
Syntax
ip as-path access-list as-path-name
To delete an AS-PATH ACL, use the no ip as-path access-list as-path-name command.
Parameters
Defaults
Not configured
Command Modes
CONFIGURATION
Example
Figure 6-15. Command Example: ip as-path access-list
Usage
Information
Use the match as-path or neighbor filter-list commands to apply the AS-PATH ACL to BGP
routes.
Command
History
Related
Commands
permit
e
Create a filter to forward BGP routes that match the route’s AS-PATH attributes. Use regular
expressions to identify which routes are affected by this filter.
Syntax
permit as-regular-expression
To remove this filter, use the no permit as-regular-expression command.
as-path-name
Enter the access-list name, up to 140 characters.
FTOS(conf)#ip as-path access-list TestPath
FTOS(config-as-path)#
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.8.1.0 Increased name string to accept up to 140 characters. Prior to 7.8.1.0, names are up to
16 characters long.
pre-Version 6.1.1.0 Introduced for E-Series
match as-path Match on routes contain a specific AS-PATH.
neighbor filter-list Configure filter based on AS-PATH information.