Quality of Service (QoS) in Data Networks


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Table of Contents

Quality of Service (QoS) in Data Networks

Overview

Quality of Service

QoS Components

QoS Components

Traffic Shaping

Token Bucket Shaper

Traffic Policing

Peak Rate Policing with Leaky Bucket

Queuing and Scheduling for QoS

ATM Networks

ATM Service Categories

Service Class and QoS Parameters

ATM QoS

ATM QoS: Issues

Integrated Services

RSVP

RSVP Messages

After

RSVP and Integrated Services: Issues

Differentiated Services

Per-hop Behaviors (PHBs)

Expedited Forwarding

Assured Forwarding

Problems with DiffServ

Multiprotocol Label Switching (MPLS)

Label Switching Example

Traffic Engineering Using MPLS

IEEE 802.1D Model

End-to-end QoS

QoS Debate

Comparison of QoS Approaches

Radio Spectrum Management

CAC: Blocking vs Dropping

Mean Opinion Score (MOS)

Voice Codecs

VOIP Quality Factors

Transmission Impairments

VOIP over 802.11

Selective Packet Marking

Summary

Author: Raj Jain

Home Page: http://www1.cse.wustl.edu/~jain/

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