The amount of time (in 100ms intervals) over which the
threshold is defined.
If h3cDot3OamErrFrameSecsSummaryThreshold frame errors occur
within a window of h3cDot3OamErrFrameSecsSummaryWindow (in tenths
of seconds), an Event Notification OAMPDU should be generated
with an Errored Frame Seconds Summary Event TLV indicating the
threshold has been crossed in this window.