Allied Telesis AT-GS950/48 - Manual (Page 20)

Chapter 1: Overview
20
LEDs
Table 2 describes the system LEDs.
Table 3 describes the LEDs for the 10/100/1000Base-T ports.
Table 2. System LEDs
LED State Description
POWER Off Either the switch is not receiving power or
the AC input power is outside the normal
operating range.
Blinking
Green
The switch is in the process of initializing
the management software.
Steady
Green
The input AC power is within the normal
operating range.
Table 3. 10/100/1000Base-T Port LEDs
LED State Description
L/A (link/activity) Off The port has not established a link with a
network device.
Blinking
Green
The port is transmitting or receiving network
packets.
Steady
Green
The port has established a link to a network
device.
SPD (speed) Steady
Green
The operating speed of the port is 1000
Mbps.
Steady
Amber
The operating speed of the port is 100 Mbps.
Off The operating speed of the port is 10 Mbps
or the port has not established a link with a
network device.
DPX (duplex mode
for AT-GS950/8
Switch only)
Steady
Green
The port is operating in full duplex mode.
Off The port is operating in half duplex mode.