This is a reference to the intersection of a row and column (cell) in the table specified by the companion varbind (lgpEventParmTableRef) in this notification. The row in the table where this cell exists represents the object that this notification applies to. Example: NOTIFICATION: lgpEventRcpPowerStateChangeOff varbind: sysUpTime 393885975 varbind: lgpEventParmTableRef lgpPduRcpTable varbind: lgpEventParmTableRowRef lgpPduRcpEntryId.2.4.5 In the above example the power state changed for a Receptacle. The table containing the definition of the receptacle (lgpPduRcpTable) is given by the varbind (lgpEventParmTableRef) The specific receptacle is specified by the varbind (lgpEventParmTableRowRef). In this case the notification is for the 5th receptacle on the 4th receptacle branch on the 2nd PDU in the PDU cluster. If one wanted to retrieve the user assigned label for this receptacle the OID would be: lgpPduRcpEntryUsrLabel.2.4.5