Installation guide

C HAPTER 1 | Introduction
Description of Hardware
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DESCRIPTION OF HARDWARE
10/100BASE-T PORTS
The switch contains 24 RJ-45 ports that operate at 10 Mbps, or 100 Mbps, half
or full duplex. Because these 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.
Each of these ports supports 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 IEEE 802.3x auto-negotiation of flow control, so the
switch can automatically prevent port buffers from becoming saturated.
SFP TRANSCEIVER SLOTS
The Small Form Factor Pluggable (SFP) transceiver slots are shared with Gigabit
RJ-45 ports 25~26. In the default configuration, if an SFP transceiver
(purchased separately) is installed in a slot and has a valid link on the port, the
associated RJ-45 port is disabled. The switch can also be configured to force the
use of an RJ-45 port or SFP slot, as required.
The following table shows a list of transceiver types which have been tested with
the switch. For an updated list of vendors supplying these transceivers, contact
your local dealer. For information on the recommended standards for fiber optic
cabling, see "Fiber Standards" on page 63.
Table 1: Supported SFP Transceivers
Media Standard Fiber Diameter
(microns)
Wavelength (nm)
Maximum Distance
*
1000BASE-SX 50/125 850 700 m
62.5/125 850 400 m
1000BASE-LX 50/125 1300 550 m
62.5/125 1300 550 m
9/125 1300 10 km