Operating notes on using TCP/UDP port ranges

  • Only 6 concurrent policies are possible when using unique ranges. The number of policies allowed is less if ACLs are also using port ranges.

  • No ranges allowed that include any port numbers configured as part of another QoS application port number policy.

  • An error message is generated if there are not enough hardware resources available when configuring a policy.

  • The entire range of configured port numbers must be specified when using the no form of the command, for example: 
    switch(config)# qos udp-port range 1300 1399 dscp 001110
switch(config)# no qos range 1300 1399

Configuration for TCP and UDP port prioritization

The following example displays the following configuration for TCP and UDP 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 Wide Web HTTP)

2

2

UDP Port 80 (World Wide Web HTTP)

1

1

Configuring 802.1p priority assignments on TCP/UDP ports