The two objects cdot3OamErrSymPeriodThresholdHi and
cdot3OamErrSymPeriodThresholdLo together form an unsigned
64-bit integer representing the number of symbol errors that
must occur within a given window to cause this event.
This is defined as
cdot3OamErrSymPeriodThreshold =
((2^32) * cdot3OamErrSymPeriodThresholdHi)
+ cdot3OamErrSymPeriodThresholdLo
If cdot3OamErrSymPeriodThreshold symbol errors occur within a
window of cdot3OamErrSymPeriodWindow symbols, an Event
Notification OAMPDU should be generated with an Errored Symbol
Period Event TLV indicating the threshold has been crossed in
this window.
The default value for cdot3OamErrSymPeriodThreshold is one
symbol errors. If the threshold value is zero, then an Event
Notification OAMPDU is sent periodically (at the end of every
window). This can be used as an asynchronous notification to
the peer OAM entity of the statistics related to this
threshold crossing alarm.