wfCSMACDUnAlignedFrames 1.3.6.1.4.1.18.3.4.1.1.37

Number of non-optimally aligned frames queued to the driver for transmit. This statistic does not indicate that any frames have been dropped. If the ethernet I/O board is not a Quad Ethernet Link Module (QENET) or if it is a QENET and none of the four ethernet interfaces are experiencing transmit underflow errors (wfCSMACDUfloTx), then this statistic should be ignored. If, however, this interface or other interfaces on the QENET are experiencing transmit underflow errors, the underflows are preventable by setting the wfCSMACDAlignmentMode attribute to 1. See explanation of that attribute for more information. This attribute means that these frames are candidates for re-alignment. It does not, by itself, indicate that re-alignment is necessary.