1 QoS Overview ············································································································································1-1

Introduction to QoS ·································································································································1-1

Introduction to QoS Service Models ·······································································································1-1

Best-Effort Service Model················································································································1-1

IntServ Service Model ·····················································································································1-1

DiffServ Service Model ····················································································································1-2

QoS Techniques Overview ·····················································································································1-2

Positions of the QoS Techniques in a Network···············································································1-2

2 QoS Configuration Approaches···············································································································2-1

QoS Configuration Approach Overview ··································································································2-1

Non Policy-Based Configuration ·····································································································2-1

Policy-Based Configuration ·············································································································2-1

Configuring a QoS Policy························································································································2-2

Defining a Class ······························································································································2-2

Defining a Traffic Behavior ··············································································································2-4

Defining a Policy······························································································································2-5

Applying the QoS Policy··················································································································2-5

Displaying and Maintaining QoS Policies························································································2-8

3 Priority Mapping Configuration················································································································3-1

Priority Mapping Overview ······················································································································3-1

Introduction to Priority Mapping·······································································································3-1

Priority Mapping Tables···················································································································3-1

Priority Trust Mode on a Port ··········································································································3-2

Priority Mapping Procedure·············································································································3-2

Priority Mapping Configuration Tasks ·····································································································3-3

Configuring Priority Mapping···················································································································3-4

Configuring a Priority Mapping Table ······························································································3-4

Configuring the Priority Trust Mode on a Port·················································································3-4

Configuring the Port Priority of a Port······························································································3-5

Displaying and Maintaining Priority Mapping··························································································3-5

Priority Mapping Configuration Examples·······························································································3-5

Priority Mapping Table and Priority Marking Configuration Example··············································3-5

4 Traffic Policing, Traffic Shaping, and Line Rate Configuration····························································4-1

Traffic Policing, Traffic Shaping, and Line Rate Overview······································································4-1

Traffic Evaluation and Token Buckets·····························································································4-1

Traffic Policing ·································································································································4-2

Traffic Shaping ································································································································4-3

Line Rate ·········································································································································4-4

Configuring Traffic Policing ·····················································································································4-5

Configuration Procedure··················································································································4-5

Configuration Example ····················································································································4-5

Configuring GTS ·····································································································································4-6

Table of Contents