TP-Link T1600G-18TS Configuration Manual page 465

Configuring QoS
Step 4 show qos status
Verify that 802.1P priority is enabled.
show qos cos-map
Verify the mapping relations between the Tag-id / CoS-id and TC queues.
Step 5 end
Return to privileged EXEC mode.
Step 6 copy running-config startup-config
Save the settings in the configuration file.
The following example shows how to map CoS2 to TC0, and keep other CoS-id-TC as
default:
Switch#configure
Switch(config)#qos queue cos-map 2 0
Switch(config)#show qos status
802.1p priority is enabled.
DSCP priority is disabled.
Switch(config)#show qos cos-map
-----+-----+-----+-----+-----+-----+-----+----+----
Tag |0 |1
-----+-----+-----+-----+-----+-----+-----+----+----
TC |TC1 |TC0 |TC0 |TC3 |TC4 |TC5 |TC6 |TC7
-----+-----+-----+-----+-----+-----+-----+----+----
Switch(config)#end
Switch#copy running-config startup-config
 Configuring DSCP Priority
Step 1 configure
Enter global configuration mode.
Step 2 qos dscp
Enable DSCP Priority.
Step 3 show qos cos-map
Check the CoS-id-TC mapping relations.
|2 |3 |4 |5 |6 |7
DiffServ Configuration
Configuration Guide 442