Cabletron Systems SSR-GLX19-02, User Manual

Page: 347 / 495

CoreWatch User’s Manual 347
Chapter 16: Configuring Routing Policies on the SSR
Aggregate Policies
Configuration Expert lets you create aggregates to restrict the selection of routes, to
specify whether the routes are considered to be contributors, and if the routes are
considered to be contributors to specify route preference.
An aggregate route is a general route composed of two or more contributing routes. In the
following figure, California is an aggregate route the SSR has learned. That aggregate
route consists of the Santa Barbara, Monterey, and Eureka contributing routes.
The SSR can export the California aggregate route to the New York router as long as one of
the contributing routes remain active. The New Yorker router learns the California
aggregate route but it does not learn the individual contributing routes.
Configuring Aggregate Policies
After you create aggregate export sources, aggregate destinations, and aggregate sources
and IP route filters as discussed earlier in this chapter, you can configure aggregate
routing policies by going through the following procedure.
Note:
Before you attempt to configure an aggregate policy, you must ensure that you
have previously configured at least one unused Aggregate Destination and one
unused Aggregate Source building block, as described in
“Export Policies” on
page 335 and “Export Policies” on page 335 .
To configure an aggregate policy:
1. Start Configuration Expert if you have not already done so.
2. Open the configuration file you want to modify and then double-click that file’s
Routing Configuration object.
3. Double-click the IP Routing Configuration object.
4. Double-click the IP Unicast Routing object.
5. Double-click the Routing Policy Configuration object.
6. Double-click the Aggregate Policies object and click the Configure New Aggregate
Policy object.
Configuration Expert opens the Aggregate Policy wizard.
7. Click Next .
New York
Router
SSR California
Aggregate Route
Santa Barbara Route
Monterey Route
Eureka Route