Cabletron Systems 9032578-05 manual Creating an Export Destination, Creating an Export Source

Chapter 13: Routing Policy Configuration Guide

Creating an Export Destination

To create an export destination, enter one the following commands in Configure mode:

Create a RIP export destination.	ip-router	policy		create rip-export-
	destination		<name>
Create an OSPF export	ip-router	policy		create ospf-export-
destination.	destination		<name>

Creating an Export Source

To create an export source, enter one of the following commands in Configure mode:

Create a RIP export	ip-router policy create rip-export-source <name>
source.
Create an OSPF export	ip-router policy create ospf-export-source <name>
source.

Import Policies

Import policies can be constructed from one or more of the following building blocks:

•Import-source - This component specifies the source of the imported routes. It can also specify the preference to be associated with the routes imported from this source. The routes to be imported can be identified by their associated attributes, including source protocol, source interface, or gateway from which the route was received, and so on.

•Route Filter - This component provides the means to define a filter for the routes to be imported. Routes that match a filter are considered as eligible for importation. This can be done using one of two methods:

–Creating a route-filter and associating an identifier with it. A route-filter has several network specifications associated with it. Every route is checked against the set of network specifications associated with all route-filters to determine its eligibility for importation. The identifier associated with a route-filter is used in the ip-router policy import command.

–Specifying the networks as needed in the ip-router policy import command.

If you want to create a complex route-filter, and you intend to use that route-filter in several import policies, then the first method is recommended. It you do not have complex filter requirements, then use the second method.

After you create one or more building blocks, they are tied together by the ip-router policy import command.

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