Configuring QoS mutation map actions

A policy map and a class map have been configured.

Different kinds of mutations can be used depending on the command. For complete information, refer to relevant Command Reference guide. The available commands are cos-mutation, cos-traffic-class, dscp-cos, dscp-mutation, and dscp-traffic-class.

Enter global configuration mode.
```
device# configure terminal
```
Select the policy map.
```
device(config)# policy-map policyMap1
```

Select the class.

device(config-policymap)# class default

Specify the mutation map.
```
device(config-policyclass)# map dscp-cos all-zero-map
```
In this example a DSCP-to-CoS mutation is configured.
Return to privileged EXEC mode.
```
device(config-policyclass)# end
```

Verify the configuration.

device# show run policy-map
policy-map policyMap1
 class default
  map dscp-cos all-zero-map
 !

Save the running-config file to the startup-config file.
```
device# copy running-config startup-config
```

QoS mutation map configuration example

device# configure terminal
device(config)# policy-map policyMap1
device(config-policymap)# class default
device(config-policyclass)# map dscp-cos all-zero-map
device(config-policyclass)# end
device# show run policy-map
device# copy running-config startup-config