Defines an entry in the tmnxOamMacTrL2MapTable. The first two
index elements identify the tmnxOamTrCtlEntry that a
tmnxOamMacTrL2MapEntry belongs to. The third index element
identifies a particular 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. Note that in the case of a successful
'macTraceRoute' reply there will be only one row entry created.
However there may also be one or more error replies. The seventh
index selects a single L2 mapping entry within a specific
probe reply.