Allied Telesis AT-8088/xx (MT and SC) - Manual (Page 32)

Overview
32
Fiber Optic Port LEDs
The fiber optic ports for the AT-8016F/xx, AT-8024GB (GBIC slots),
AT-8026FC, and AT-8088 switches are described below.
The fiber optic ports on the AT-8016F/xx and AT-8088/xx switches have
two LEDs, labeled L/A and D/C. The LEDs are defined in Table 4.
Note
The AT-8016F/xx and AT-8088/xx switches do not have a LED Mode
Select button.
Table 4. AT-8016/xx and AT-8088/xx Fiber Optic Port LEDs
LED State Description
L/A OFF Indicates that there is no link between the port
and the end-node.
Green Indicates a valid link has been established
between the port and the end-node.
Flashing
Green Indicates that the port is transmitting and/or
receiving data packets.
D/C Green Indicates that the port is operating in full-
duplex mode.
Amber Indicates that the port is operating in half-
duplex mode.
Flashing
Amber Indicates that data collisions are occurring on
the port.