# Creating Classifier Groups and Policy Rules

This chapter provides information for configuring policy-based routing management on E Series routers. See the E120 and E320 Module Guide for modules supported on the E120 and E320 routers. The chapter discusses the following topics:

- Classifier Groups and Policy Rules Overview
- Policy Rule Precedence
- Using Policy Rules to Provide Routing Solutions
- Configuring Policies to Provide Network Security
- Creating an Exception Rule within a Policy Classifier Group
- Defining Policy Rules for Forwarding
- Assigning Values to the ATM CLP Bit
- Enabling ATM Cell Mode
- Enabling IP Options Filtering
- Packet Tagging Overview
- Creating Multiple Forwarding Solutions with IP Policy Lists
- Creating a Classifier Group for a Policy List
- Applying Policy Lists to Interfaces and Profiles Overview
- Using RADIUS to Create and Apply Policies Overview
- Examples: Using the Ascend-Data-Filter Attribute for IPv4 Subscribers
- Examples: Using the Ascend-Data-Filter Attribute for IPv6 Subscribers