qos map dscp-traffic-class

Creates a QoS map for performing DSCP-to-traffic class mapping. You use the qos traffic-class-dscp command to apply the map to an interface.

Syntax

qos map dscp-traffic-class name

no qos map dscp-traffic-class name

map dscp ingress dscp values to traffic-class traffic class [ drop-precedence out drop precedence ]

Command Default

DSCP-to-traffic class mutation is not enabled.

Parameters

name: Name of the QoS DSCP-to-traffic clas map.
map dscp: Ingress DSCP values. The range of ingress DSCP values is 0 through 63.
traffic-class: Egress traffic class values. The range of ingress traffic class values is from 0 through 7.
drop-precedence: Drop precedence value given egress packets. The range is 0 through 3.
ingress dscp values: Range of input DSCP values. The range is 0 through 63.
traffic class: The traffic class value. the range is from 0 through 7.
out drop precedence: Value of the output drop precedence. The range is 0 through 3.

Modes

dscp-traffic-class mode for the DSCP-to-traffic class map

Global configuration mode

Usage Guidelines

Enter qos dscp-traffic-class name to apply the QoS DSCP-Traffic-Class map to that interface. When you enter qos map dscp-traffic-class, the system is placed in dscp-traffic-class mode for the configured map. At this point, you can map ingress DSCP values to traffic class values using the mark command.

Enter no qos dscp-traffic-class name while in the interface mode to remove the map from that interface.

Note

This command is supported on devices based on the XGS chipset family. For a list of such devices, see "Supported Hardware".

Examples

This example creates a QoS DSCP-to-traffic class map and places the system into dscp-traffic-class mode.

device# configure terminal
device(config)# qos map dscp-traffic-class test 
device(dscp-traffic-class-test)#

This example maps ingress DSCP values to a traffic class.

device# configure terminal
device(config)# qos map dscp-traffic-class test
device(dscp-traffic-class-test)# map dscp 1,3,5,7 to traffic-class 1 drop-precedence 1

This example maps multiple ingress DSCP values to traffic classes and drop precedence.

device# configure terminal
device(config)# qos map dscp-traffic-class test
device(dscp-traffic-class-test)# map dscp 10 to traffic-class 3 drop-precedence 1
device(dscp-traffic-class-test)# map dscp 40 to traffic-class 4 drop-precedence 1
device(dscp-traffic-class-test)# map dscp 45 to traffic-class 5 drop-precedence 0
device(dscp-traffic-class-test)# map dscp 52 to traffic-class 3 drop-precedence 1

This example removes a QoS DSCP-traffic-class map.

device# configure terminal
device(config)# no qos map dscp-traffic-class test