Cisco.Press.QOS.Implementing.Cisco.QoS.StudentGuide.v.2.2.Vol.I.II.pdf

QOS

Implementing Cisco Quality of

Service

Volume 1-2

Version 2.2

Student Guide

Editorial, Production, and Graphic Services: 06.28.06

Table of Contents

Volume 1

Course Introduction

Overview

Learner Skills and Knowledge

Course Goal and Objectives

Course Flow

Additional References

Cisco Glossary of Terms

Your Training Curriculum

Introduction to QoS

1-1

Overview

1-1

Module Objectives

1-1

Understanding the Need for QoS

1-3

Overview

1-3

Objectives

1-3

Converged Networks

1-4

Converged Networks Quality Issues

1-6

Available Bandwidth

1-8

End-to-End Delay

1-10

Example: Effects of Delay

1-10

Packet Loss

1-14

Summary

1-17

Understanding QoS

1-19

Overview

1-19

Objectives

1-19

QoS Defined

1-20

QoS for Converged Networks

1-21

Example: Three Steps to Implementing QoS on a Network

1-21

QoS Requirements

1-22

QoS Traffic Classes

1-26

Example: Traffic Classification

1-26

QoS Policy

1-27

Example: Defining QoS Policies

1-27

Summary

1-30

Implementing QoS

1-31

Overview

1-31

Objectives

1-31

Methods for Implementing QoS Policy

1-32

Legacy CLI

1-34

Modular QoS CLI

1-35

AutoQoS VoIP and Enterprise

1-36

QoS Implementation Methods Compared

1-38

QoS Policy Manager

1-39

Network MIBs for Monitoring QoS

1-41

MIBs for Managing QoS

1-42

Summary

1-45

Module Summary

1-46

References

1-47

Module Self-Check

1-48

Module Self-Check Answer Key

1-50

Implementing Cisco Quality of Service (QOS) v2.2

¨ 2006 Cisco Systems, Inc.

The Building Blocks of QoS

2-1

Overview

2-1

Module Objectives

2-1

Identifying Models for Implementing QoS

2-3

Overview

2-3

Objectives

2-3

QoS Models

2-4

Best-Effort Model

2-5

IntServ Model

2-7

DiffServ Model

2-12

Summary

2-14

Understanding the Integrated Services Model

2-15

Overview

2-15

Objectives

2-15

Integrated Services Model

2-16

RSVP Components

2-20

RSVP Interface Bandwidth Queuing

2-21

Enabling RSVP on an Interface

2-22

IntServ and DiffServ Integration

2-23

Summary

2-24

Understanding the Differentiated Services Model

2-25

Overview

2-25

Objectives

2-25

Differentiated Services Model

2-26

DSCP Encoding

2-27

Per-Hop Behaviors

2-28

Backward Compatibility Using the Class Selector

2-33

Summary

2-34

Identifying QoS Mechanisms

2-35

Overview

2-35

Objectives

2-35

QoS Mechanisms

2-36

Classification

2-37

Marking

2-39

Congestion Management

2-40

Congestion Avoidance

2-42

Policing and Shaping

2-43

Link Efficiency Mechanisms

2-45

Link Fragmentation and Interleaving

2-46

Applying QoS to Input and Output Interfaces

2-47

Summary

2-48

Understanding QoS in the Life of a Packet

2-49

Overview

2-49

Objectives

2-49

QoS and Packets

2-50

Life of a High-Priority (VoIP) Packet

2-51

Life of a Low-Priority (FTP) Packet

2-60

Summary

2-70

Module Summary

2-71

References

2-72

Module Self-Check

2-73

Module Self-Check Answer Key

2-76

¨ 2006 Cisco Systems, Inc.

Course Introduction

Introduction to Modular QoS CLI and AutoQoS

3-1

Overview

3-1

Module Objectives

3-1

Introducing Modular QoS CLI

3-3

Overview

3-3

Objectives

3-3

Modular QoS CLI

3-4

Example: Advantages of Using MQC

3-4

Modular QoS CLI Components

3-5

Example: Configuring MQC

3-5

Class Maps

3-6

Configuring and Monitoring Class Maps

3-8

Example: Class Map Configuration

3-8

Example: Using the match Command

3-10

Example: Nested Traffic Class to Combine match-any and match-all Characteristics in One

Traffic Class 3-10

Policy Maps 3-12

Configuring and Monitoring Policy Maps 3-13

Example: Policy Map Example 3-15

Example: Hierarchical Policy Maps 3-17

Example: Hierarchical Policy-Map Configuration 3-18

Service Policy 3-20

Attaching Service Policies to Interfaces 3-21

Example: Complete MQC Configuration 3-21

Summary 3-23

Introducing Cisco AutoQoS VoIP 3-25

Overview 3-25

Objectives 3-26

Cisco AutoQoS VoIP 3-27

AutoQoS VoIP: Router Platforms 3-31

AutoQoS VoIP: Switch Platforms 3-32

Configuring AutoQoS VoIP 3-34

Example: Configuring the AutoQoS VoIP Feature on a High-Speed Serial Interface 3-37

Example: Using the Port-Specific AutoQoS Macro 3-41

Monitoring AutoQoS VoIP 3-43

Example: Show Auto QoS and Show Auto QoS Interface 3-44

Automation with Cisco AutoQoS 3-49

Summary 3-50

Introducing Cisco AutoQoS Enterprise 3-51

Overview 3-51

Objectives 3-51

Cisco AutoQoS Enterprise 3-52

AutoQoS Enterprise Router Platforms 3-55

Configuring AutoQoS Enterprise 3-57

Example: Configuring the AutoQoS Discovery Feature on a High-Speed Serial Interface 3-60

Example: Configuring the AutoQoS Enterprise Feature on a High-Speed Serial Interface 3-60

Monitoring AutoQoS Enterprise

3-61

Example: Show Auto QoS and Show Auto QoS Interface

3-62

Summary

3-65

Module Summary

3-66

References

3-67

Module Self-Check

3-68

Module Assessment Answer Key

3-69

Implementing Cisco Quality of Service (QOS) v2.2

¨ 2006 Cisco Systems, Inc.

Classification and Marking

4-1

Overview

4-1

Module Objectives

4-1

Understanding Classification and Marking

4-3

Overview

4-3

Objectives

4-3

Classification

4-4

Marking

4-5

Classification and Marking at the Data-Link Layer

4-6

Classification and Marking at the Network Layer

4-11

Mapping CoS to Network Layer QoS

4-12

QoS Service Class Defined

4-14

Example: Defining QoS Service Classes

4-15

Implementing a QoS Policy Using a QoS Service Class

4-16

Trust Boundaries

4-20

Summary

4-22

Using MQC for Classification

4-23

Overview

4-23

Objectives

4-23

MQC Classification Options

4-24

Configuring Classification with MQC

4-26

Configuring Classification Using Input Interface

4-29

Configuring Classification Using CoS

4-30

Configuring Classification Using Access Lists

4-31

Configuring Classification Using IP Precedence

4-33

Configuring Classification Using DSCP

4-34

Configuring Classification Using a UDP Port Range

4-36

Monitoring Class Maps

4-37

Summary

4-39

Using MQC for Class-Based Marking

4-41

Overview

4-41

Objectives

4-41

Class-Based Marking Overview

4-42

MQC Marking Options

4-43

Configuring Class-Based Marking

4-44

Configuring CoS Marking

4-47

Configuring IP Precedence Marking

4-49

Configuring IP DSCP Marking

4-50

Monitoring Class-Based Marking

4-51

Summary

4-54

Using NBAR for Classification

4-55

Overview

4-55

Objectives

4-55

Network-Based Application Recognition

4-56

NBAR Application Support

4-58

Packet Description Language Module

4-62

Protocol Discovery

4-63

Configuring and Monitoring Protocol Discovery

4-65

Configuring NBAR for Static Protocols

4-67

Example: Configuring NBAR for Static Protocols

4-69

Configuring NBAR for Stateful Protocols

4-70

Example: Configuring NBAR for Stateful Protocols

4-73

Summary

4-74

¨ 2006 Cisco Systems, Inc.

Course Introduction

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