# Configuring Dropping Behavior with RED and WRED

This chapter provides information for configuring dropping behavior using RED and WRED on the E Series router.

QoS topics are discussed in the following sections:

- Dropping Behavior Overview
- RED and WRED Overview
- Configuring RED
- Example: Configuring Average Queue Length for RED
- Example: Configuring Dropping Thresholds for RED
- Example: Configuring Color-Blind RED
- Configuring WRED
- Example: Configuring Different Treatment of Colored Packets for WRED
- Example: Defining Different Drop Behavior for Each Traffic Class for WRED
- Example: Configuring WRED and Dynamic Queue Thresholds
- Monitoring RED and WRED