To Next Page

To Previous Page

32-38

Catalyst 3750 Switch Software Configuration Guide

78-16180-02

Chapter 32 Configuring QoS

Configuring Standard QoS

To return a port to its non-trusted state, use the no mls qos trust interface configuration command. To

return to the default DSCP-to-DSCP-mutation map values, use the no mls qos map dscp-mutation

dscp-mutation-name global configuration command.

This example shows how to configure a port to the DSCP-trusted state and to modify the

DSCP-to-DSCP-mutation map (named gi1/0/2-mutation) so that incoming DSCP values 10 to 13 are

mapped to DSCP 30:

Switch(config)# mls qos map dscp-mutation gi1/0/2-mutation 10 11 12 13 to 30

Switch(config)# interface gigabitethernet1/0/2

Switch(config-if)# mls qos trust dscp

Switch(config-if)# mls qos dscp-mutation gi1/0/2-mutation

Switch(config-if)# end

Configuring a QoS Policy

Configuring a QoS policy typically requires classifying traffic into classes, configuring policies applied

to those traffic classes, and attaching policies to ports.

For background information, see the “Classification” section on page 32-4 and the “Policing and

Marking” section on page 32-8. For configuration guidelines, see the “Standard QoS Configuration

Guidelines” section on page 32-31.

These sections describe how to classify, police, and mark traffic. Depending on your network

configuration, you must perform one or more of these tasks:

• Classifying Traffic by Using ACLs, page 32-38

• Classifying Traffic by Using Class Maps, page 32-42

• Classifying, Policing, and Marking Traffic by Using Policy Maps, page 32-44

• Classifying, Policing, and Marking Traffic by Using Aggregate Policers, page 32-47

Classifying Traffic by Using ACLs

You can classify IP traffic by using IP standard or IP extended ACLs; you can classify non-IP traffic by

using Layer 2 MAC ACLs.

Cisco WS-C3750-48PS-S User Manual

Questions and Answers: