Changes the interface default Class of Service (CoS) value.
The default is 0.
Interface configuration mode
To set the CoS value to 2 on a specific Ethernet interface:
device# configure terminal device(config)# interface ethernet 1/3 device(conf-if-eth-1/3)# qos cos 2
To set the CoS value to 2 on a specific port channel interface:
device# configure terminal device(config)# interface port-channel 22 device(config-port-channel-22)# qos cos 2