5
FX LinkLoss (FXLL)
FX LinkLoss is a troubleshooting feature. When a fault occurs on the fiber segment of
a conversation, FX LinkLoss detects the fault and passes this information to the
twisted pair segment. If a media converter is not receiving a fiber link, FX LinkLoss
disables the transmitter on the media converter’s twisted pair port. This results in a
loss of link on the device connected to the twisted pair port, and the FXLL LED will
blink.
TX LinkLoss (TXLL)
TX LinkLoss is a troubleshooting feature. When a fault occurs on the twisted pair
segment of a conversion, TX LinkLoss detects the fault and passes this information to
the fiber segment. If a media converter is not receiving a twisted pair link, TX
LinkLoss disables the transmitter on the media converter's fiber port. This results in a
loss of link on the device connected to the fiber port, and the TXLL LED will blink.
Link Fault Pass-Through (LFPT)
Link Fault Pass-Through (LFPT) is a troubleshooting feature that combines TX and FX
LinkLoss from both the local and remote IE-iMcV-MediaLinX TX/SFP modules. LFPT
is enabled by turning on both FX and TX LinkLoss on both modules. This feature
allows either end of the conversion to detect a link fault occurring at the other end of
the media conversion chain.
Regardless if there is a break in segment 1, 2 or 3, the link will drop on the switches
at both ends. The link fault is passed through the media conversion and is observed at
each end. It acts just like it would if the devices were directly connected.
