CCNP ONT Official Exam Certification Guide

Chapter 5. Congestion Avoidance, Policing, Shaping, and Link Efficiency Mechanisms

<feature><title>This chapter covers the following subjects</title>

• Congestion Avoidance

• Traffic Shaping and Policing

• Link Efficiency Mechanisms

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This chapter intends to give you an overview of three main quality of service (QoS) concepts: congestion avoidance, traffic shaping and policing, and link efficiency mechanisms. Each concept is presented in its own section. WRED and class-based WRED are the main mechanisms covered in the “Congestion Avoidance” section. Traffic shaping and policing concepts are explained in the second section; you will learn the purpose of these mechanisms and where it is appropriate to use them. Different compression techniques, ...