H3C S5500-SI Series Operation Manual

Operation Manual - QoS
H3C S5500-SI Series Ethernet Switches
Chapter 1 QoS Overview .............................................................................................................. 1-1
1.1 Introduction ........................................................................................................................ 1-1
1.2 Traditional Packet Delivery Service ................................................................................... 1-1
1.3 New Requirements Brought forth by New Services .......................................................... 1-1
1.4 Occurrence and Influence of Congestion and the Countermeasures ............................... 1-2
1.4.1 Occurrence of Congestion ...................................................................................... 1-2
1.4.2 Influence of Congestion .......................................................................................... 1-3
1.4.3 Countermeasures.................................................................................................... 1-3
1.5 Major Traffic Management Techniques ............................................................................. 1-3
1.5.1 Traffic Classification ................................................................................................ 1-4
1.5.2 Precedence ............................................................................................................. 1-5
1.5.3 Introduction to TP .................................................................................................... 1-6
1.5.4 Traffic Evaluation and Token Bucket ...................................................................... 1-7
Chapter 2 LR Configuration ......................................................................................................... 2-1
2.1 Introduction to LR............................................................................................................... 2-1
2.2 LR Configuration ................................................................................................................ 2-1
2.2.1 LR Configuration Procedure.................................................................................... 2-1
2.2.2 LR Configuration Example ...................................................................................... 2-2
Chapter 3 QoS Policy Configuration ........................................................................................... 3-1
3.1 Overview ............................................................................................................................ 3-1
3.2 Configuring QoS Policy...................................................................................................... 3-1
3.3 Introducing Each QoS Policy ............................................................................................. 3-2
3.4 Configuring QoS Policy...................................................................................................... 3-2
3.4.1 Configuration Prerequisites..................................................................................... 3-2
3.4.2 Defining a Class ...................................................................................................... 3-2
3.4.3 Defining a Traffic Behavior...................................................................................... 3-4
3.4.4 Configuring a Policy ................................................................................................ 3-7
3.4.5 Applying a Policy ..................................................................................................... 3-7
3.5 Displaying QoS Policy ....................................................................................................... 3-9
Chapter 4 Congestion Management ............................................................................................ 4-1
4.1 Overview ............................................................................................................................ 4-1
4.2 Congestion Management Policy ........................................................................................ 4-1
4.3 Configuring SP Queue Scheduling .................................................................................... 4-2
4.3.1 Configuration Procedure ......................................................................................... 4-3
4.3.2 Configuration Example............................................................................................ 4-3
4.4 Configuring WRR Queue Scheduling ................................................................................ 4-3
4.4.1 Configuration Procedure ......................................................................................... 4-3

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Table of Contents