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Perle Gigabit Fiber to Fiber Media Installation Guide
5
Fiber Fault Alert (Switch 3)
Switch Position
Mode
Up (default) Enabled
Down Disabled
Enabled: If the media converter detects a loss of fiber signal on
the fiber receiver, it will immediately disable its fiber transmitter
signal on this port. This, in effect, notifies the fiber link partner that
an error condition exists on the fiber connection.
If the remote media converter is set up for Fiber Fault Alert(FFA)
Enabled and the local media converter is set up with Smart Link
Pass-Through, a loss of fiber link on either the transmit or receive
line will be passed through to the other fiber connection.
Disabled: The media converter will not monitor for fiber fault.
Note: This feature is not required; if Fiber negotiation has been
enabled since link negotiation accomplishes the same thing. When
Fiber Negotiation is enabled this switch is ignored.
Illustration of the FFA feature
Media Converter A Configuration
Link Mode–Standard Mode
Fiber Fault Alert
Media Converter B Configuration
Link Mode–Smart Link Pass Through Mode
Fiber Fault Alert