Route Policy Configuration; Introduction To Route Policy; Route Policy Application; Route Policy Implementation - 3Com 4500G Family Configuration Manual

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Route Policy Configuration

A route policy is used on a router for route filtering and attributes modification when routes are received,
advertised, or redistributed.
When configuring route policy, go to these sections for information you are interested in:

Introduction to Route Policy

Route Policy Configuration Task List
Defining Filters
Configuring a Route Policy
Displaying and Maintaining the Route Policy
Route Policy Configuration Example
Troubleshooting Route Policy Configuration
Route policy in this chapter involves both IPv4 route policy and IPv6 route policy.
Introduction to Route Policy
A route policy is used on a router for route filtering and attributes modification when routes are received,
advertised, or redistributed.

Route Policy Application

A route policy is applied on a router to:
Filter routes when they are advertised;
Filter routes when they are received, thus to reduce the number of route entries and enhance
network security;
Filter routes when they are redistributed and modify some of their attributes;
Set attributes of permitted routes.

Route Policy Implementation

To configure a route policy, you need to:
1) Define some filters based on the attributes of routing information, such as destination address, and
the advertising router's address.
2) Then apply the filters to the route policy.
You can use multiple filters flexibly to define match criteria. For details, refer to Filters.
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