A count of frames for which transmission on a
particular interface fails due to an internal MAC
sublayer transmit error. A frame is only counted
by an instance of this object if it is not counted
by the corresponding instance of either the
dot3StatsLateCollisions object, the
dot3StatsExcessiveCollisions object, the
dot3StatsCarrierSenseErrors object, or the
dot3StatsExcessiveDeferrals object.
The precise meaning of the count represented by an
instance of this object is implementation-
specific. In particular, an instance of this
object may represent a count of transmission
errors on a particular interface that are not
otherwise counted.