Allied Telesis VERSION 5.4.3-2.6, BGP4 manual Route-map Route Map, Mapname

BGP and BGP4+ Commands

route-map (Route Map)

Use this command to configure a route map entry, and to specify whether the device will process or discard matching routes and BGP update messages.

The switch uses a name to identify the route map, and a sequence number to identify each entry in the route map.

The route-mapcommand puts you into route-map configuration mode. In this mode, you can use the following:

■one or more of the match commands to create match clauses. These specify what routes or update messages match the entry.

■one or more of the set commands to create set clauses. These change the attributes of matching routes or update messages.

Use the no variant of this command to delete a route map or to delete an entry from a route map.

Syntax route-map <mapname> {denypermit} <seq>

no route-map <mapname>

no route-map <mapname> {denypermit} <seq>

Parameter	Description
<mapname>	A name to identify the route map.
deny	The route map causes a routing process to discard matching routes
	or BGP update messages.
permit	The route map causes a routing process to use matching routes or
	BGP update messages.
<seq>	<1-65535> The sequence number of the entry. You can use this
	parameter to control the order of entries in this route map.

Mode Global Configuration

Usage Route maps allow you to control and modify routing information by filtering routes and setting route attributes. You can apply route maps when the device:

■processes BGP update messages that it has received from a peer

■prepares BGP update messages to send to peers

■redistributes routes from one routing protocol into another

■redistributes static routes into routing protocols

■uses BGP route flap dampening

When a routing protocol passes a route or update message through a route map, it checks the entries in order of their sequence numbers, starting with the lowest numbered entry.

If it finds a match on a route map with an action of permit, then it applies any set clauses and accepts the route. Having found a match, the route is not compared against any further entries of the route map.

If it finds a match on a route map with an action of deny, it will discard the matching route.

	Software Reference Supplement for SwitchBlade® x8112, x908, x900 and x610 Series Switches
C613-50032-01 REV D	AlliedWare PlusTM Operating System - Software Version 5.4.3-2.6	3.201