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Cisco Systems IntelligentGigabit Ethernet Switch Modules for the IBMBladeCenter, Software Configuration Guide
24R9746
Chapter23 Co nfiguring QoS
Configuring Standard QoS
This example shows how the DSCP values 26 and 48 are mapped to CoS value 7. For the remaining
DSCP values, the DSCP-to-CoS mapping is the default.
Switch(config)# mls qos map dscp-cos 26 48 to 7
Switch(config)# exit
Switch# show mls qos maps dscp-cos
Dscp-cos map:
dscp: 0 8 10 16 18 24 26 32 34 40 46 48 56
-----------------------------------------------
cos: 0 1 1 2 2 3 7 4 4 5 5 7 7
Configuring the Egress Queues
This section describes how to configure the egress queues:
•Configuring CoS Priority Queues, page 23-34
•Configuring WRR Priority, page 23-35
•Enabling the Expedite Queue and Configuring WRR Priority, page 23-35
For more information about the egress queues, see the “Egress CoS Queues” section on page23-8.

Configuring CoS Priority Queues

Beginning in privileged EXEC mode, follow these steps to configure the CoS priority queues:
To disable the new CoS settings and return to default settings, use the no wrr-queue cos-map global
configuration command.
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 wrr-queue cos-map qid cos1...cosn Sp ecify the queue ID of the CoS priority queue. ( Ranges are 1 to 4 where
1 is the lowest CoS priority queue.)
Specify the CoS values that are mapped to the queue id.
Default values are as follows:
CoS Value CoS Priority Queues
0, 1 1
2, 3 2
4, 5 3
6, 7 4
Step3 end Return to privileged EXEC mode.
Step4 show wrr-queue cos-map Display the mapping of the CoS priority queues.