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