Cisco 4500M Command Reference Manual page 257

Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches
Examples
This example shows how to set the trusted state of an interface to CoS:
Switch(config-if)# qos trust cos
Switch(config-if)#
This example shows how to set the trusted state of an interface to DSCP:
Switch(config-if)# qos trust dscp
Switch(config-if)#
This example shows how to set the PVID CoS level to 6:
Switch(config-if)# qos trust extend cos 6
Switch(config-if)#
This example shows how to set the Cisco phone as the trust device:
Switch(config-if)# qos trust device cisco-phone
Switch(config-if)#
Related Commands
qos cos
qos vlan-based
show qos interface
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Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
qos trust
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