Configuring QoS Class of Service Configuration
Configuration Guide  
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Dot1p Remap     0        3        2        3        4        5       6         7         N/A
Switch(config)#end
Switch#copy running-config startup-config
2.2.3  Configuring DSCP Priority
Configuring the Trust Mode
Follow these steps to configure the trust mode:
Step 1 configure
Enter global configuration mode
Step 2 interface {fastEthernet 
port
 | range fastEthernet 
port-list
 | gigabitEthernet 
port
 | range 
gigabitEthernet 
port-list
 | ten-gigabitEthernet 
port
 | range ten-gigabitEthernet 
port-list
 | port-
channel 
port-channel-id
 | range port-channel 
port-channel-list
}
Enter interface configuration mode.
Step 3 qos trust mode {
untrust
 | 
dot1p
 | 
dscp
}
Select the trust mode for the port. By default, it is untrust. Here we set the trust mode as dscp.
dscp: 
Specify the ports’ trust mode as dscp. In this mode, the IP packets will be processed 
according to the DSCP priority configuration and the non-IP packets will be processed 
according to the port priority configuration.
Step 4 show qos trust interface [fastEthernet 
port
 | gigabitEthernet 
port
 | ten-gigabitEthernet 
port
 
| port-channel 
port-channel-id
]
Verify the trust mode of the ports.
Step 5 end
Return to privileged EXEC mode.
Step 6 copy running-config startup-config
Save the settings in the configuration file.
Configuring the 802.1p to Queue Mapping
Follow these steps to configure the 802.1p to queue mapping:
Step 1 configure
Enter global configuration mode