This indicates the reason for the last link
failure.
liStatus indicates that the daughter board status
has changed.
liImplicitIncident indicates that a condition which
may cause the recognition of a link incident in the
attached node has been recognized.
liBERthreshold indicates that the code violation
error rate exceeded the threshold.
liSignalOrSyncLoss indicates a loss of signal or
loss of synchronization that persisted longer
than the link interval duration.
liNotOperationalSequence indicates the recognition
of not-operational sequence, usually due to the
operator taking the channel offline.
liSequenceTimeout indicates a connection recovery
timeout or response timeout occurring while in
transmit OLS state.
linvalidSequence indicates a UD or UDR sequence was
recognized while in wait-for-offline-sequence state.