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28 C2607M (2/07)
100BASE-FX Status LED ( )
Green A fiber link is
established.
— No action required.
Flashing green Data activity is
occurring on the fiber
link; data is being
transmitted or
received.
— No action required.
Red Far end fault
indication (FEFI).
The optical signal
transmitted from this
port is not detected
by the remote link
partner.
Defective fiber transmit port
on local module
Replace local module.
Laser fault on local module
(Optic Fault LED on local
module flashes red).
Refer to the Optic Fault LED
section in this table.
Defective fiber receive port
on remote module
Replace remote module.
NOTE: The Optic Fault LED on the remote module is red. Refer to the Optic Fault
LED section in this table for additional information.
(Continued on next page)
Table C. Troubleshooting with Front-Panel Indicators (Continued)
Indicator Color Meaning Possible Cause Corrective Action