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Configuring QoS
The following example shows how to configure the trust mode of port 1/0/1 as untrust,
map the port 1/0/1 to 802.1p priority 1 and map 802.1p priority 1 to TC3:
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/1
Switch(config-if)#qos trust mode untrust
Switch(config-if)#qos port-priority 1
Switch(config-if)#exit
Switch(config)#qos cos-map 1 3
Switch(config)#show qos trust interface gigabitEthernet 1/0/1
Port
Trust Mode
--------
---------
Gi1/0/1
untrust
Switch(config)#show qos port-priority interface gigabitEthernet 1/0/1
Port
CoS Value
--------
---------
Gi1/0/1
CoS 1
Switch(config)#show qos cos-map
---------------+-----+-----+-----+-----+-----+-----+----+----
Dot1p Value |0
---------------+-----+-----+-----+-----+-----+-----+----+----
TC
---------------+-----+-----+-----+-----+-----+-----+----+----
Switch(config)#end
Switch#copy running-config startup-config
2.2.2 Configuring 802.1p Priority
Configuring the Trust Mode
Follow these steps to configure the trust mode:
Step 1
configure
Enter global configuration mode
LAG
--------
N/A
LAG
--------
N/A
|1
|2
|3
|TC0 |TC3 |TC2 |TC3 |TC4 |TC5 |TC6 |TC7
|4
|5
|6
|7
Class of Service Configuration
Configuration Guide
434
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