C
HAPTER
1
| Introduction
Description of Hardware
– 15 –
Each port also supports auto-negotiation of flow control, so the switch can
automatically prevent port buffers from becoming saturated.
SFP S
LOTS
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.
P
ORT
AND
S
YSTEM
S
TATUS
LED
S
The LEDs, which are located on the front panel for easy viewing, are shown
below and described in the following table.
Figure 2: Port Status LEDs
Table 1: Port Status LEDs
LED
Condition
Status
RJ-45 Ports
Link/ACT
(Link/Activity)
On/Blinking Green
The port has a valid 10 or 100 Mbps link. Blinking
indicates activity.
Off
There is no valid link on the port.
Combination Gigabit Ports
Link/ACT
(Link/Activity)
On/Blinking Green
The port has a valid 10/100/1000 Mbps link.
Blinking indicates activity.
Off
There is no valid link on the port.
RJ-45 Port Status LEDs
Combination Gigabit Port Status LEDs
