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Description of Hardware
10/100BASE-T Ports
These switches contain 24/48 10BASE-T/100BASE-TX RJ-45 ports. These ports
support automatic MDI/MDI-X operation, so you can use straight-through cables for
all network connections to PCs or servers, or to other switches or hubs. (See
"10BASE-T/100BASE-TX Pin Assignments" on page B-1.)
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 IEEE 802.3x auto-negotiation of flow control, so the switch
can automatically prevent port buffers from becoming saturated.
Gigabit Combination Ports
The Small Form Factor Pluggable (SFP) transceiver slots are shared with two of the
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.
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 table.
SMC6128PL2
SMC6128PL2
SMC6152PL2
Power Status LED
System Status LED
Link/Act
System
Figure 1-3 Port and System Status LEDs
Description of Hardware
Port Status LEDs
25 27
26 28
1
1-3
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