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Perle PoE/PoE+ Ethernet Media Converter
Installation Guide
11
of link on either the fiber or copper port can occur without affecting
the other connection.
Smart Link Pass-Through In this mode, the link state on one
connection is directly reflected through the media converter to the
other connection. If link is lost on one of the connections, then the
other link will be brought down by the media converter.
If the media converter has 2 copper or 2 fiber connections, then
both must go down in order to affect the other connection(s).
If the installation has a media converter on both ends of the fiber
link and both are set-up for Smart Link Pass-Through, then a loss
of copper link on the far end device will propagate through both
media converters and will result in a loss of link at the near end
device.
Fiber Fault Alert (Switch 3)
Switch Position Fiber Port 1
Fiber Port 2
Up (default) Enabled Enabled
Down Disabled Enabled
Enabled: If the media converter detects a loss of signal on the
fiber receiver, it will immediately disable its fiber transmitter signal
on the same 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)
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.
If the media converter has been set to Smart Link Pass-Through
mode, the effect will be the same as FFA, since the link loss on
the fiber receiver will result in bringing down the copper link, which
will in turn cause the transmit fiber link to be brought down.
Note: This feature only takes effect if Fiber Negotiation has been
turned off.
Disabled: The media converter will not monitor for or generate
Fiber Fault Alert.