Chapter 1 Product Overview
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1. Indicators
Indicators are located on the front panel of the switch. The functions of each indicator are are shown
below.
LED
Status
Power (green)
On: Power is on.
Off: Power is off.
USB (green)
On:
USB device inserted
Blinking: Accessing the USB memory device
Off:
USB device removed
Diag (green or red)
On (green):
Normal
On (red):
Hardware reset button was activated during startup or
during self-diagnosis
Blinking (red): Loop was detected by loop detection function
1000/100/10M (green or orange)
On (green): 1000M link established
On (orange): 100M link established
Off:
10M link established or no link established
LINK/ACT (green)
On:
Link established
Blinking: Data transmission is in progress
Off:
No link established
2. 1000BASE-T/100BASE-TX/10BASE-T ports
Each port supports autonegotiation. The optimal duplex mode (full-duplex/ half-duplex) and
transfer speed (1000 / 100 / 10 Mbps) are selected automatically.
Each port also supports auto-MDIX. As the port type at the other end is determined automatically,
there is no need to make a selection of either a straight cable or a crossover cable.
However, auto-MDIX is disabled if the transfer speed and duplex mode are fixed.
The shared ports and SFP ports only support auto negotiation.
Note: When using 1000BASE-T, use a IEEE802.3ab compliant cable that supports Category 5e or higher as the
connection cable.
3. SFP ports
These are ports for attaching 1000BASE-LX and 1000BASE-SX modules. Optional modules (BS-SFP-
GLR, BS-SFP-GSR) (sold separately) are required to use these ports. These support autonegotiation
and flow control and operate in full-duplex mode with a transfer speed of 1 Gbps.
The shared ports cannot be used at the same time as SFP ports. When cables are connected to SFP
ports, shared ports are disabled.
