TP-Link T1600G-18TS Configuration Manual page 468

Configuring QoS
Step 5 show qos interface [fastEthernet port-list | gigabitEthernet port-list ] [port-channel lagid-list ]
Verify the CoS value of the port. If no port is specified, it displays the CoS values of all ports.
port-list:
lagid-list:
Step 6 end
Return to privileged EXEC mode.
Step 7 copy running-config startup-config
Save the settings in the configuration file.
Note:
All the ports in the same LAG should be assigned with the same port priority.
The following example shows how to map port 1-3 to TC1, and keep other mapping
relations as default:
Switch#configure
Switch(config)#show qos cos-map
-----+-----+-----+----+-----+-----+-----+----+----
Tag |0 |1
-----+-----+-----+----+-----+-----+-----+----+----
TC |TC1 |TC0 |TC2 |TC3 |TC4 |TC5 |TC6 |TC7
-----+-----+-----+----+-----+-----+-----+----+----
Switch(config)#interface range gigabitEthernet 1/0/1-3
Switch(config-if-range)#qos 0
Switch(config-if-range)#show qos interface gigabitEthernet 1/0/1-3
Port CoS Value
---------- ---------------
Gi1/0/1 CoS 0
Gi1/0/2 CoS 0
Gi1/0/3 CoS 0
Switch(config-if-range)#end
Switch#copy running-config startup-config
The list of Ethernet ports.
The list of LAGs.
|2 |3 |4 |5
LAG
------------
N/A
N/A
N/A
|6 |7
DiffServ Configuration
Configuration Guide 445