Configuring Precedence Classification - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

Configuring Precedence Classification

Procedure
Step 1
Step 2
Step 3
Step 4
This example shows how to classify traffic by matching packets based on UDP port ranges that are typically
used by RTP applications:
switch# configure terminal
switch(config)# class-map type qos class_rtp
switch(config-cmap-qos)# match
Use the show class-map command to display the RTP class-map configuration:
switch# show class-map class_rtp
Configuring Precedence Classification
You can classify traffic based on the precedence value in the type of service (ToS) byte field of the IP header
(either IPv4 or IPv6). The following table shows the precedence values:
Table 57: Precedence Values
Value
<0-7>
critical
flash
flash-override
immediate
internet
network
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
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Command or Action
switch# configure terminal
switch(config)# class-map type qos
class-name
switch(config-cmap-qos)# match ip
rtp port-number
switch(config-cmap-qos)# no match
ip rtp port-number
ip rtp 2000-2100, 4000-4100
Purpose
Enters configuration mode.
Creates a named object that represents a class of traffic.
Class-map names can contain alphabetic, hyphen, or
underscore characters, are case sensitive, and can be up
to 40 characters.
Configures the traffic class by matching packets based
on a range of lower and upper UDP port numbers, which
is likely to target applications using RTP. Values can
range from 2000 to 65535.
(Optional)
Removes the match from the traffic class.
List of Precedence Values
IP precedence value
Critical precedence (5)
Flash precedence (3)
Flash override precedence (4)
Immediate precedence (2)
Internetwork control precedence (6)
Network control precedence (7)
Configuring System Classes
OL-16597-01