Cisco Catalyst 2950 Hardware Installation Guide

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Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-05
Chapter 3 Installation
Preparing for Installation
Installation Guidelines
When determining where to place the switch, observe these guidelines.
• Before installing the switch, first verify that the switch is operational by
powering it on and running POST. Follow the procedures in the “Verifying
Switch Operation” section on page 3-10.
• For 10/100 ports and 10/100/1000 ports, the cable length from a switch to an
attached device cannot exceed 328 feet (100 meters).
• For 100BASE-FX ports, the cable length from a switch to an attached device
cannot exceed 6562 feet (2 kilometers).
• For 1000BASE-SX ports and 1000BASE-SX Gigabit Interface Converter
(GBIC) module ports, the cable length from a switch to an attached device
cannot exceed 1804 feet (550 meters).
• For 1000BASE-LX/LH GBIC module ports, the cable length from a switch to
an attached device cannot exceed 32,810 feet (10 kilometers).
• For 1000BASE-ZX GBIC module ports, the cable length from a switch to an
attached device cannot exceed 328,100 feet (100 kilometers).
• For 1000BASE-T GBIC module ports, the cable length from a switch to an
attached device cannot exceed 328 feet (100 meters).
• For Coarse Wave Division Multiplexing (CWDM) GBIC module ports, the
cable length from a switch to an attached device cannot exceed 393,719 feet
(120 kilometers). For specific cable lengths, refer to the CWDM GBIC
module documentation.
• For GigaStack GBIC module ports, the cable length from a switch to an
attached device cannot exceed 3 feet (1 meter).
• For Long-Reach Ethernet (LRE) ports, cable-length specifications vary. See
the “LRE Port” section on page 2-12.
• Operating environment is within the ranges listed in Appendix A, “Technical
Specifications.”
• Clearance to front and rear panels meet these conditions:
– Front-panel LEDs can be easily read.
– Access to ports is sufficient for unrestricted cabling.
– Rear-panel AC power connector on switches other than the LRE switches
is within reach of an AC power outlet.

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