Chapter 4: Install the
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.
For more information on LinkLoss/FiberAlert, visit the Black Box Web site at http://www.blackbox.com. If unsure of how to implement these features in a specific configuration, contact Black Box Technical Support at
4.3.5FiberAlert and Far End Fault
Modules ship from the factory with troubleshooting features disabled.
FiberAlert (FA) FiberAlert minimizes the problems associated with the loss of one strand of fiber. If a strand is unavailable, the Black Box device at the receiver end notes the loss of link.
The device will then stop transmitting data and the link signal until a signal or link pulse is received. The result is that the link LED on BOTH sides of the fiber connection will go out indicating a fault somewhere in the fiber loop. Using FiberAlert, a local site administrator is notified of a fault and can quickly determine where a cable fault is located.
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