The number of octets seen of this protocol from the
destination host to the source host during this sampling
interval, counted using the rules for counting the
alMatrixDSOctets object. (Note that the corresponding
alMatrixSDOctets object selected is the one whose source
address is equal to alMatrixTopNDestAddress and whose
destination address is equal to alMatrixTopNSourceAddress.)
Note that if the value of alMatrixTopNControlRateBase is equal
to alMatrixTopNTerminalsOctets or alMatrixTopNAllOctets, the
sort of topN entries is based entirely on
alMatrixTopNOctetRate, and not on the value of this object.