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FiberAlert
FiberAlert minimizes the problems associated with the loss of one strand of fiber.
Normally when a single strand of fiber is lost, the transmitting side of the connection
is unaware that there is a fault. FiberAlert returns faults back on the fiber they came
in on.
Using LinkLoss and FiberAlert
In a typical central site to remote site media conversion, it is recommended that you
enable the LinkLoss and FiberAlert features as indicated in the following:
FiberAlert and LinkLoss
Feature Enabled Fault Location Port affected
FiberAlert
Remote Side Only Fiber Fiber
TX LinkLoss
Remote Side (or both) Twisted Pair Fiber
FX LinkLoss
Host Side (or both) Fiber Twisted Pair
** WARNING **
Do not enable FiberAlert on both modules when using iMcV-Giga-FiberLinX-II
in pairs. This will cause them to lock up when a fault occurs on the fiber.
Only enable FiberAlert on the remote module
.
Link Fault Pass-Through
Link Fault Pass-Through (LFPT) is a troubleshooting feature that combines TX and FX
LinkLoss from both the local and remote iMcV-Giga-FiberLinX-II 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:
•
A cable fault occurs on the remote twisted pair.
•
TX LinkLoss detects the fault and disables the OPTICS (or UPLINK) port.
•
FX LinkLoss detects the fiber loss and disables the DATA port.
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.
NOTE
FiberAlert can also be added to the remote side of the pair to further assist in
locating a fault.