Leds – Allied Telesis AT-GS903SX User Manual
Page 13
AT-GS903SX Installation Guide
3
LEDs
Table 1 describes the switch LEDs. Refer to Figure 3 for the labels for the LEDs
for the two types of ports.
Table 1 AT-GS903SX LED Indicators
LED
Color
Indicates
Power
Green On
The switch is powered up and ready for use.
Off
The switch is powered off.
Gigabit Ethernet Port Status LEDs
Link
Green On
Link is present; port is enabled; full-duplex operation.
Off
Link is not present.
Activity
Green Flashing
Packets are being transmitted/received on this port.
Off
No activity on this port.
10/100Mbps Port Status LEDs
Ful/Col
Yellow On
Full-duplex mode.
Off
Half-duplex mode.
Yellow Flashing
Two or more devices attempted to transmit data at the same
time. (Typical under Ethernet CSMA/CD.)
Link/
Yellow On
100M Link is present; port is enabled.
Act
Yellow Flashing
100M Packets are being transmitted/received on this port.
Green On
10M Link is present; port is enabled.
Green Flashing
100M Packets are being transmitted/received on this port.
Off
Link is not present.