Assigning an 802.1p priority for a global TCP/UDP classifier

This option assigns an 802.1p priority to (IPv4) TCP or UDP packets as described below.


qos < udp-port | tcp-port > < tcp or udp port-number | range <start end> > priority < 0-7>

Configures an 802.1p priority for outbound packets having the specified TCP or UDP application port number. This priority determines the packet’s queue in the outbound port to which it is sent. If the packet leaves the switch on a tagged port, it carries the 802.1p priority with it to the next downstream device. (Default: Disabled)

port-number: TCP/UDP port number from 1 to 65535.

range <start end> : Marks a range of TCP/UDP ports. If you specify a range, the minimum port number must precede the maximum port number in the range.

priority <0-7>: Marks the specified 802.1p priority in matching TCP or UDP packets.


no qos < udp-port | tcp-port > < tcp-udp port-number | range <start end> >

Deletes the specified UDP or TCP port number or range of numbers as QoS classifiers.


show qos tcp-udp-port-priority

Displays a listing of all TCP and UDP QoS classifiers currently in the running-config file.