Cisco Catalyst 2950 Software Guide

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Catalyst 2950 Desktop Switch Software Configuration Guide
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Chapter 13 Configuring QoS
Configuring QoS
CLI: 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:
To disable the WRR scheduler and enable the strict priority scheduler, use the
no wrr-queue bandwidth global configuration command.
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.

Cisco Catalyst 2950 Specifications

General

Forwarding Bandwidth	8.8 Gbps
Switching Capacity	13.6 Gbps
Forwarding Rate	6.6 Mpps
Weight	3.6 kg
RAM	16 MB
Flash Memory	8 MB
Operating Humidity	10% to 85% non-condensing
Uplink Ports	2 x 10/100/1000Base-T
Dimensions	4.4 cm x 44.5 cm x 24.2 cm
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Quality of Service (QoS), VLAN support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p
Status Indicators	system
Operating Temperature	0 to 45°C
Ports	24 x 10/100 Ethernet ports
MAC Address Table Size	8, 192 entries
Power Supply	Internal 100-240V AC, 50-60Hz