Installation guide

1-5
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-01
Chapter 1 Overview
Front-Panel Description
Figure 1-5 Catalyst 2950T-24 Switch
10/100 Ports
The 10/100 ports use RJ-45 connectors and Category 5 cabling. These ports can
be explicitly set to operate in any combination of half duplex, full duplex,
10 Mbps, or 100 Mbps. They can also be set for speed and duplex autonegotiation,
compliant with IEEE 802.3u. In all cases, the cable length from a switch to an
attached device cannot exceed 328 feet (100 meters).
When set for autonegotiation, a port senses the speed and duplex settings of the
attached device and advertises its own capabilities. If the attached device supports
autonegotiation, the port negotiates the best connection (that is, the fastest line
speed that both devices support and full-duplex transmission, if the attached
device supports it) and configures itself accordingly.
100BASE-FX Ports
The 100BASE-FX ports use 50/125- or 62.5/125-micron multimode fiber-optic
cabling. In full-duplex mode (the default), the cable length from a switch to an
attached device cannot exceed 6562 feet (2 kilometers). In half-duplex mode, the
cable length cannot exceed 1352 feet (412 meters).
You can connect a 100BASE-FX port to an SC or ST port on a target device by
using one of the MT-RJ fiber-optic patch cables listed in Table 1-2. Use the Cisco
part numbers in Table 1-2 to order the patch cables that you need.
10/100 ports
10/100/1000 ports
47337
SYST RPS
DUPLX
MODE
SPEED
UTILSTAT
10Base-T / 100Base-TX
10/100/100Base-T
Catalyst 2950
SERIES
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