Allied Telesis AT-2711FX/LC, Installation And User Manual, Page: 124 / 136

Troubleshooting
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Checking the Port LED on the Adapter
The AT-2711 fiber adapter card has one port LED. You can use the status
of the port LED for troubleshooting.
Note
Before the port LED can provide troubleshooting information, the
driver software for your particular operating system must be installed
and the adapter must be connected to the network. See Chapter 3,
“Installing the Driver Software for Windows Systems” on page 35.
Table 6 describes the link states that the LED indicates.
Table 6. Fiber Optic Port 100 LED Status
State Description
On The port is operating at 100 Mbps and has a valid link.
Off No valid link is present.
Flashing The port is receiving or transmitting network packets at
100 Mbps.