# Configuring a QoS Parameter

This chapter provides information for configuring quality of service (QoS) parameters on E Series routers.

QoS parameters are discussed in the following sections:

- Parameter Definition Attributes for QoS Administrators Overview
- Scheduler Profiles and Parameter Expressions for QoS Administrators
- Configuring a Basic Parameter Definition for QoS Administrators
- Parameter Instances for QoS Clients Overview
- Creating Parameter Instances
- Example: QoS Parameter Configuration for Controlling Subscriber Bandwidth