Installation guide

Chapter 2 Product Overview
Front-Panel Description
2-6
Catalyst 3550 Multilayer Switch Hardware Installation Guide
78-11358-06
Figure 2-3 Switch Front Panel
10/100 and 10/100/1000 Ports
The Fast Ethernet (10/100-Mbps) and Gigabit Ethernet (10/100/1000-Mbps) ports
use standard RJ-45 connectors and Ethernet pinouts with internal crossovers. The
maximum cable length is 328 feet (100 meters). 100BASE-TX and 1000BASE-T
traffic requires twisted four-pair Category 5 cable. 10BASE-T traffic can use
Category 3 or Category 4 cable.
Fast Ethernet ports operate at 10 or 100 Mbps in either full- or half-duplex mode.
In full-duplex mode, two stations can send and receive traffic at the same time.
Normally, 10-Mbps ports operate in half-duplex mode, which means that stations
can either receive or send traffic.
You can configure interface speed on Fast Ethernet and Gigabit Ethernet ports. On
Fast Ethernet ports, you can configure the duplex mode to full, half, or
autonegotiate. On Gigabit Ethernet ports, you can configure ports to full-duplex
mode or to autonegotiate; half-duplex mode is not supported.
1 Mode button 4 10/100 or 10/100/1000 Ethernet
ports or 100BASE-FX Ports
1
1. Port numbering is from left to right, with port 1 on the far left. For ports grouped in pairs, the first
member of the pair (port 1) is above the second member (port 2). The GBIC slots are numbered
1 (left) and 2 (right) or 1 (above) and 2 (below).
2 Switch LEDs 5 GBIC slots
3 Port LEDs
101603
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Catalyst 3550 SERIES
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2
345
67
8910
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4 5