Cabletron Systems SmartSwitch manual Creating an Import Source, Creating a Route Filter

Chapter 11: Routing Policy Configuration Guide

To create route import policies, enter the following command in Configure mode:

Create an import policy.

ip-router policy import source <imp-src-id>[filter <filter-id>[network <ipAddr-mask>[exactrefinesbetween <low-high>] [preference <number>restrict]]]

The <imp-src-id>is the identifier of the import-source that determines the source of the imported routes. If no routes from a particular source are to be imported, then no additional parameters are required.

The <filter-id>, if specified, is the identifer of the route-filter associated with this import- policy. If there is more than one route-filter for any import-source, then the ip-router policy import source <imp-src-id>command should be repeated for each <filter-id>.

Creating an Import Source

Import sources specify the routing protocol from which the routes are imported. The source may be RIP or OSPF.

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

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

Creating a Route Filter

Route policies are defined by specifying a set of filters that will match a certain route by destination or by destination and mask.

To create route filters, enter the following command in Configure mode:

Create a route filter.

ip-router policy create filter <name-id>network <IP-address/mask>

Creating an Aggregate Route

Route aggregation is a method of generating a more general route, given the presence of a specific route. The routing process does not perform any aggregation unless explicitly requested. Aggregate-routes can be constructed from one or more of the following building blocks:

180 SmartSwitch Router User Reference Manual