Cisco Catalyst 3750 Command Reference Manual page 228

mls qos cos
This example shows how to assign all the packets entering a port to the default port CoS value of 4
on a port:
Switch(config)# interface gigabitethernet2/0/1
Switch(config-if)# mls qos cos 4
Switch(config-if)# mls qos cos override
You can verify your settings by entering the show mls qos interface privileged EXEC command.
Related Commands Command
show mls qos interface
Catalyst 3750 Switch Command Reference
2-200
Chapter 2
Description
Displays quality of service (QoS) information.
Catalyst 3750 Switch Cisco IOS Commands
78-16181-03