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Deploying IP and MPLS QoS for Multiservice Networks by Clarence Filsfils, John William Evans

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3 Deploying Diffserv

3.1 Introduction

In Chapter 1, we defined the key service level agreement (SLA) parameters for IP applications and services as being: delay, delay variation or jitter, packet loss rate, throughput, availability, and per flow sequence preservation. In Chapter 2, we described the QOS component mechanisms and architectures that can be used in engineering a network to meet SLA targets. In this chapter, we build on the context and understanding created by Chapters 1 and 2, to show how the Differentiated Services architecture (Diffserv) can be practically deployed at the network edge and in the network core in order to satisfy defined application SLA requirements. Diffserv is by far the most widely deployed IP QOS architecture; ...

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