LevelOne GSW-2476, Руководство пользователя

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D
ESCRIPTION OF
H
ARDWARE
1-3
Description of Hardware
10/100/1000BASE-T Ports
The switch contains 24 RJ-45 ports that operate at 10 Mbps or 100 Mbps,
half or full duplex, or at 1000 Mbps, full duplex. Because all ports on the
switch 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
B-5.)
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.
SFP Slots
The Small Form Factor Pluggable (SFP) transceiver slots are shared with
four of the RJ-45 ports (ports 21-24). 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 Power Status LEDs
The switch includes a display panel for key system and port indications
that simplify installation and network troubleshooting. The LEDs, which
are located on the front panel for easy viewing, are shown below and
described in the following tables.