Introduction; Match As-Path - Allied Telesis SwitchBlade x908 Series Software Reference Manual

Route Map Commands

Introduction

This chapter provides an alphabetized command reference for route map commands. These
commands can be divided into the following categories:
■
■
■

match as-path

Use this command to add an autonomous system (AS) path match clause to a route map
entry. Specify the AS path attribute value or values to match by specifying the name of an AS
path access list. To create the AS path access list, enter Global Configuration mode and use the
ip as-path access-list command.
A BGP update message matches the route map if its attributes include AS path values that
match the AS path access list.
Each entry of a route map can only match against one AS path access list in one AS path match
clause. If the route map entry already has an AS path match clause, entering this command
replaces that match clause with the new clause.
Note that AS path access lists and route map entries both specify an action of deny or permit.
The action in the AS path access list determines whether the route map checks update
messages for a given AS path value. The route map action and its set clauses determine what
the route map does with update messages that contain that AS path value.
Use the no parameter to remove the AS path match clause from a route map entry.
Syntax
match as-path <AS-path-listname>
no match as-path [<AS-path-listname>]
Parameter
<AS-path-listname>
Route-map mode
Mode
This command is valid for BGP update messages only.
Usage
39.2
route-map command, used to create a route map and/or route map entry, and to put you
into route map mode
match commands, used to determine which routes or BGP update messages the route
map applies to
set commands, used to modify matching routes or BGP update messages.
Description
Specifies an AS path access list name.
Software Reference for SwitchBlade® x908, x900 and x600 Series Switches
TM
AlliedWare Plus Operating System - Software Version 5.3.1 C613-50007-01 REV B