Defines an entry in the tmnxOamLspTrDSLabelTable. The first
two index elements identify the tmnxOamTrCtlEntry that a
tmnxOamLspTrMapEntry belongs to. The third index element
identifies a OAM trace route test run. The fourth index element
selects the group of responses associated with a specific
probe attempt. The fifth and sixth indexes select the hop and
the probe at that hop for a particular Alcatel-Lucent SROS OAM
Trace Route operation. The seventh index selects a single downstream
L2 map entry within the specific probe reply. The eigth index
selects seccessive downstream L2 label entries contained in a
specific probe reply.