Installation guide

AT-8000 Series Fast Ethernet Switches Installation Guide
25
Next to each GBIC slot on the AT-8024GB Switch and fiber optic port on
the AT-8026FC Switch are two LEDs. The LEDs display the operating
status of the fiber optic port. Use the Mode Select Button on the switch
to toggle the status information displayed by the MODE LED. The LEDs
are defined in Table 4.
Table 4 AT-8024GB and AT-8026FC Fiber Optic Port LEDs
LED State Description
LINK OFF Indicates that there is no link between the port
and the end node.
Solid Green Indicates a valid link has been established
between the port and the end node.
Mode - COL OFF Indicates that no data collisions are occurring on
the port.
Flashing Green Indicates that data collisions are occurring on the
port.
Mode - 100 Solid Green Indicates that the port is operating at 1000 Mbps
(AT-8024GB switch) or 100 Mbps (AT-8026FC
switch).
Mode - FULL OFF Indicates that the port is operating in half-duplex
mode.
Solid Green Indicates that the port is operating in full-duplex
mode.
Mode - ACT OFF Indicates that there is no activity on the port.
Flashing Green Indicates that the port is transmitting and/or
receiving data packets.