Index of table. Traps are sent with this OID followed by the index number of the table entry that generated the trap. An integer value is sent with the trap which indicates what state change caused the trap. Using the wTrapDeviceHighThreshold and wTrapDeviceLowThreshold values, 3 windows are created. Transitions between these windows generates a trap. The integer value indicates which transition caused the trap as follows: 1 -> middle to high window transition 2 -> high to middle window transition 3 -> middle to low window transition 4 -> low to middle window transition Note the following when programming traps: 1) Programming the HighThreshold lower than the LowThreshold is invalid and will disable trap generation. 2) The wTrapEUI must be set to an active device or a trap will not be sent. 3) The health of the device must be greater than 0 or no trap will be sent. 4) The wTrapVariable must match one of the XML names.