Installation Guide

C HAPTER 1 | Introduction
Description of Hardware
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DESCRIPTION OF HARDWARE
SFP SLOTS
The 12 Small Form Factor Pluggable (SFP) transceiver slots are shared with 12
RJ-45 ports. In its default configuration, if an SFP transceiver (purchased
separately) is installed in a slot and has a valid link on its port, the associated
RJ-45 port is disabled and cannot be used. The switch can also be configured to
force the use of an RJ-45 port or SFP slot, as required.
The SFP slots support the following SFP transceivers:
◆ 1000 Mbps Ethernet SFP transceivers
■
1000BASE-LX5
■
1000BASE-LX15
■
1000BASE-LHX
■
1000BASE-ZX
◆ 100 Mbps Ethernet SFP transceivers
■
100BASE-FX
For information on the recommended standards for fiber optic cabling, see "Fiber
Optic SFP Devices" on page 46.
10/100/1000BASE-T PORTS
The switch contains contains 12 1000BASE-T RJ-45 ports that operate at 10
Mbps or 100 Mbps, half or full duplex, or at 1000 Mbps, full duplex. Because all
of the RJ-45 ports support automatic MDI/MDI-X operation, you can use
straight-through cables for all network connections to PCs or servers, or to other
switches or hubs. (See "1000BASE-T Pin Assignments" on page 60.)
Each of these ports support auto-negotiation, so the optimum transmission
mode (half or full duplex), and data rate (10, 100 or 1000 Mbps) can be selected
automatically. If a device connected to one of these ports does not support auto-
negotiation, the communication mode of that port can be configured manually.