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Catalyst 2950 Desktop Switch Software Configuration Guide
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Chapter 26 Configuring QoS
Configuring QoS
Configuring CoS and WRR
Note This feature is supported by both the EI and SI.
This section describes how to configure CoS priorities and weighted round-robin (WRR):
• Configuring CoS Priority Queues, page 26-27
• Configuring WRR, page 26-27
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.
Configuring WRR
Beginning in privileged EXEC mode, follow these steps to configure the WRR priority:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
wrr-queue cos-map qid cos1..cosn Specify 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
Step 3
end Return to privileged EXEC mode.
Step 4
show wrr-queue cos-map Display the mapping of the CoS priority queues.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
wrr-queue bandwidth
weight1...weight4
Assign WRR weights to the four CoS queues. (Ranges for the
WRR values are 1 to 255.)
Step 3
end Return to privileged EXEC mode.
Step 4
show wrr-queue bandwidth Display the WRR bandwidth allocation for the CoS priority
queues.