Indicates whether the occurence of Errored Symbol Period
Events should result in Event Notification OAMPDUs generated
by the OAM layer.
By default, this object should have the value enabled(1) for
Ethernet like interfaces that support OAM. If the OAM layer
does not support event notifications (as indicated via the
hh3cDot3OamFunctionsSupported attribute), this value is ignored.