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Internetworking Technologies Handbook, Fourth Edition by Cisco Systems, Inc.

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Chapter 59. Quality of Service Networking

Objectives

  • Introduce QoS concepts.

  • Define QoS tools.

  • Discuss QoS tool capabilities.

  • Discuss examples of QoS tool usage.

Introduction

Quality of Service (QoS) refers to the capability of a network to provide better service to selected network traffic over various technologies, including Frame Relay, Asynchronous Transfer Mode (ATM), Ethernet and 802.1 networks, SONET, and IP-routed networks that may use any or all of these underlying technologies. The primary goal of QoS is to provide priority including dedicated bandwidth, controlled jitter and latency (required by some real-time and interactive traffic), and improved loss characteristics. Also important is making sure that providing priority for one or more ...

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