The value of tmnxDot1agCfmMepOWDTThreshold specifies when a
tmnxDot1agCfmMepDMTestComplete notification is sent for a one-way-delay
test. If tmnxDot1agCfmMepOWDTThreshold is set to zero (0), a
notification is sent on the completion of any one-way-delay-test for
this MEP. Otherwise the threshold must be exceeded to send the
notification.