Cisco WS-C3750-48PS-S Software Configuration Manual page 678

Configuring Standard QoS
Beginning in privileged EXEC mode, follow these steps to modify the DSCP-to-DSCP-mutation map.
This procedure is optional.
Command
Step 1 configure terminal
Step 2 mls qos map dscp-mutation
dscp-mutation-name in-dscp to out-dscp
Step 3 interface interface-id
Step 4 mls qos trust dscp
Step 5 mls qos dscp-mutation
dscp-mutation-name
Step 6
end
Step 7
show mls qos maps dscp-mutation
Step 8 copy running-config startup-config
To return to the default map, use the no mls qos dscp-mutation dscp-mutation-name global
configuration command.
Catalyst 3750 Switch Software Configuration Guide
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Purpose
Enter global configuration mode.
Modify the DSCP-to-DSCP-mutation map.
For dscp-mutation-name, enter the mutation map name. You can
•
create more than one map by specifying a new name.
• For in-dscp, enter up to eight DSCP values separated by spaces.
Then enter the to keyword.
For out-dscp, enter a single DSCP value.
•
The DSCP range is 0 to 63.
Specify the port to which to attach the map, and enter interface
configuration mode.
Valid interfaces include physical ports.
Configure the ingress port as a DSCP-trusted port. By default, the port
is not trusted.
Apply the map to the specified ingress DSCP-trusted port.
For dscp-mutation-name, enter the mutation map name specified in
Step 2.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Chapter 32 Configuring QoS
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