An entry in this table is created when the result of a OAM
'macPing' probe is determined. The initial 2 instance identifier
index values identify the tmnxOamPingCtlEntry that a OAM probe
result (tmnxOamMacPingHistoryEntry) belongs to. The
tmnxOamMacPingHistoryIndex has the value of the sequence number
of the request probe and identifies a group of replies received
in response to a specific probe transmission.
The agent starts assigning tmnxOamMacPingHistoryIndex values at 1
and wraps after exceeding the maximum possible value as defined by
the limit of this object.