Fast Ethernet Media Converter – Installation Guide
6
Link Mode (Switch 2)
Switch
Position Mode
Up (default) Link Pass-Through Mode
Down Standard Mode
Link Pass-Through: In this mode, the link state on one connection is
directly reflected through the Media Converter Module to the other
connection. If link is lost on one of the connections, then the other link
will be brought down.
With Media Converters on both ends of the fiber link and both setup
for Link Pass-Through, then a loss of copper link on the far end
device will propagate through both Converters and will result in a loss
of copper link at the near end device. This would, in effect, resemble
a direct copper connection.
Standard Mode: In this mode, the links on the fiber and copper sides
can be brought up and down independently of each other. A loss of
link on either the fiber or copper port can occur without affecting the
other connection.
Far End Fault (Switch 3)
Switch
Position Mode
Up (default) Enabled
Down Disabled
Enabled: If the Media Converter Module detects a loss of fiber signal
on the fiber receiver, it will immediately send a FEF on the fiber link.
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 Far End Fault (FEF) and
the local Media Converter is set up with Link Pass-Through, a loss of
fiber link on either the transmit or receive line will be passed through
to the local copper connection thus notifying the connected device.