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CanogaOS Configuration Guide

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19 Configuring Route-map

This chapter describes how to configure route-map.

19.1.1 Understanding Route-map

Route-map is used to control and modify routing information. The route-map command

allows redistribution of routes. It has a list of match and set commands associated with it.

The match commands specify the conditions under which redistribution is allowed, and the

set commands specify the particular redistribution actions to be performed if the criteria

enforced by match commands are met. Route maps are used for detailed control over route

distribution between routing processes.

Route maps also allow policy routing, and might route packets to a different route than the

obvious shortest path.

If the permit parameter is specified, and the match criteria are met, the route is redistributed

as specified by set actions. If the match criteria are not met, the next route map with the

same tag is tested.

If the deny parameter is specified, and the match criteria are met, the route is not

redistributed, and any other route maps with the same map tag are not examined.

Routes are checked from line to line looking for a match. If there is no match and the bottom

of the route map is reached, then the router denies the route from being redistributed. There

is always an implicit deny at the end of a route map.

Specify the sequence parameter to indicate the position a new route map is to have in the list

of route maps already configured with the same name.

Configuring the route-map and applying the route-map to OSPF redistribution

Beginning in privileged EXEC mode, follow these steps to configure the route-map:

Command

Description

DUT# configure terminal Enter the Configure mode.

DUT(config)# route-map abc

permit

Create a route-map named abc and

enter route-map mode.

DUT(config-route-map)#

match metric 20

Configure the match criteria.

DUT(config-route-map)# set

tag 2

Configure the set action to be

performed.

DUT(config-route-map)# exit Exit route-map mode and return to

configure mode.

DUT(config)# route-map abc

permit 20

Configure to add a route-map with the

same tag to match everything when

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