Allied Telesis AT-8100S/24 User Manual

Stack Installation Guide for 8100S Series Switches

43

Each of the 100Base-FX ports on the AT-8100S/16F8-SC, AT-8100S/
16F8-LC, and AT-8100S/24F-LC Switches has a single LED, labeled L/A 
for Link/Activity.

Figure 12. 100Base-FX Port LED

The 100Base-FX port LED is described in Table 12.

Duplex 
Mode

Off

The port is operating in half-duplex mode.

Solid green

The port is operating in full-duplex mode.

Table 11. 10/100/1000Base-T Port LEDs (Continued)

Table 12. 100Base-FX Port LED

Link/Activity

Off

The port has not established a link to a 
network device.

Solid green

The port has established a link to a 
network device.

Flashing 
green

The port is receiving or transmitting 
packets to a network device.