Random Early Detection

Chapter 4 discussed various queuing strategies you can use to manage traffic when the network is congested. Random Early Detection (RED) on a router also helps manage traffic, but takes the approach of avoiding congestion by taking advantage of flow control features in the TCP protocol. Thus, RED's strategy is congestion avoidance rather than congestion management (queuing, discussed in Chapter 4, is an example of congestion management).

This section covers

• Dynamics of Network Congestion and Tail Drops

• Global Synchronization

• 111 Effects of Global Synchronization and TCP Slow Start

• RED and IP Precedence

• Configuring RED

• Verifying RED Configuration

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