xpdrFaultPropagationDelay sets how long the transponder waits before propagating a detected fault, in units of 100 milliseconds, with a value of 0 meaning no delay. Admins increase this delay to avoid unnecessarily tripping downstream protection switching on brief, self-clearing signal glitches, at the cost of a slower fault response. For example, setting the value to 2 introduces a 200ms delay before the fault is propagated, compared to the default of 0 for immediate propagation.