Cisco Catalyst 2950 User Manual

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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
78-11380-12
Chapter 29 Configuring QoS
Auto-QoS Configuration Example
Figure 29-3 Auto-QoS Configuration Example Network
The intelligent wiring closets in Figure 29-3 are composed of Catalyst 2950 switches running the EI and
Catalyst 3550 switches. The object of this example is to prioritize the VoIP traffic over all other traffic.
To do so, enable auto-QoS on the switches at the edge of the QoS domains in the wiring closets.
Note You should not configure any standard-QoS commands before entering the auto-QoS commands. You
can fine-tune the QoS configuration, but we recommend that you do so only after the auto-QoS
configuration is completed.
101234
Cisco router
To Internet
Trunk
link
Trunk
link
Cisco IP phones
End stations
Cisco IP phones
Video server
172.20.10.16
IP
IP
IP
IP
Identify this interface
as connected to a
trusted switch or router
Identify this interface
as connected to a
trusted switch or router
Identify these
interfaces as
connected to
IP phones
Identify these
interfaces as
connected to
IP phones

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