# Configuring aggregate routes

Use this procedure to configure aggregate routes that allow the router to advertise a single route (aggregate route) that represents all destinations.

## Before you begin

- Enable aggregate routes globally.

- You need the appropriate aggregate address and mask.

- If required, policies exist.

## About this task

Aggregate routes also reduce the size of routing tables.

## Procedure

1. In the navigation tree, open the following folders: Configuration > IP.
2. Click BGP.
3. Click the Aggregates tab.
4. Click Insert.
5. Configure the aggregate Address and PrefixLen.
6. Select enable for AsSetGenerate and SummaryOnly as required.
7. Configure policies for the aggregate route.
8. Click Insert.

## Aggregates field descriptions

Use the data in the following table to use the Aggregates tab.

Name | Description
--- | ---
Address | Specifies the aggregate IP address.
PrefixLen | Specifies the aggregate subnet mask.
AsSetGenerate | Enables or disables AS-set path information generation. The default is disable.
SummaryOnly | Enables or disables the summarization of routes in routing updates. Enable this parameter to create the aggregate route and suppress advertisements of more-specific routes to all neighbors. The default is disable.