C
HAPTER
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| Introduction
Description of Hardware
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DESCRIPTION OF HARDWARE
10/100BASE-T PORTS
This switch contains 48 RJ-45 ports that operate at 10 Mbps or 100 Mbps, half or
full duplex. Because all ports on both switches 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 “Twisted-Pair Cable and Pin
Assignments” on page 53.)
Each of these ports support auto-negotiation, so the optimum transmission
mode (half or full duplex), and data rate (10 or 100 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.
Each port also supports auto-negotiation of flow control, so the switch can
automatically prevent port buffers from becoming saturated.
SFP SLOTS
The Small Form Factor Pluggable (SFP) transceiver slots are shared with four RJ-
45 ports (combination 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.
PORT AND SYSTEM STATUS LEDS
The LEDs, which are located on the front panel for easy viewing, are shown
below and described in the following tables.
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