This attribute displays whether the Path Signal Label Mismatch (P-
SLM) failure condition has been entered. An P-SLM failure
condition is entered when P-SLM defects have been observed and
accumulated for period of 2.5 seconds +/- 0.5 seconds. An P-SLM
defect occurs when detecting an unexpected path signal label. The
expected Path signal labels are 'Mapping for ATM' or 'Equipped -
Non Specific Payload'. If the P-SLM defects are intermittently
occurring, the P-SLM defect accumulator is decremented at a rate
of 1/10 of the incrementing rate (alarm integration ratio of 1/10),
with all measurements based on a 200 ms polling cycle.
The Path component goes into an operational state of disabled until
the Path Signal Label Mismatch failure condition is cleared. The
condition is cleared when an expected path signal label is received
for 10 seconds +/- 0.5 seconds.
The signalLabelMismatch attribute is always set to off when the
Path component has been locked and left offline by the operator or
when the Path component has been suspended since the parent
component has been locked.