Quality of Service (QoS): Managing Bandwidth More Effectively
Using QoS Classifiers To Configure Quality of Service for Outbound Traffic
Assigning an 802.1p Priority Based on TCP or UDP Port
Number
This option assigns an 802.1p priority to (IPv4) TCP or UDP packets as
described below.
Syntax: qos < udp-port | tcp-port > < tcp or udp port number > 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)
Note: On 3400cl/6400cl switches, this feature is not
supported for IPv4 packets with IP options. For more
information on packet-type restrictions, refer to table
8-15 on page 8-70.
no qos < udp-port | tcp-port > < tcp-udp port number >
Deletes the specified UDP or TCP port number as a QoS
classifier.
show qos tcp-udp-port-priority
Displays a listing of all TCP and UDP QoS classifiers
currently in the running-config file.
For example, configure and list 802.1p priority for the following UDP and TCP
port prioritization:
TCP/UDP Port 802.1p Priority
for TCP
802.1p Priority
for UDP
TCP Port 23 (Telnet)
7 7
UDP Port 23 (Telnet)
7 7
TCP Port 80 (World
2 2
Wide Web HTTP)
1 1
UDP Port 80 (World
Wide Web HTTP)
8-25
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