The OID for which this entry is created. This is
based on the granularity supported by the agent
corresponding to the extremeSmartTrapRulesDesiredOID
that the management station desires. This object has a
value that is a prefix of, or is equal to the value of
ExtremeSmartTrapRulesDesiredOID. The agent specifes
this value before setting the extremeSmartTrapRulesRowStatus
to active.