A conceptual row in the alMatrixDSTable.
The hlMatrixControlIndex value in the index identifies the
hlMatrixControlEntry on whose behalf this entry was created.
The first protocolDirLocalIndex value in the index identifies
the network-layer protocol of the alMatrixDSSourceAddress and
alMatrixDSDestAddress.
The nlMatrixDSDestAddress value in the index identifies the
network-layer address of the destination host in this
conversation.
The nlMatrixDSSourceAddress value in the index identifies the
network-layer address of the source host in this conversation.
The second protocolDirLocalIndex value in the index identifies
the protocol that is counted by this entry.
An example of the indexing of this entry is
alMatrixDSPkts.1.783495.18.4.128.2.6.7.4.128.2.6.6.34.
Note that some combinations of index values may result in an
index that exceeds 128 sub-identifiers in length, which exceeds
the maximum for the SNMP protocol. Implementations should take
care to avoid such combinations.