Index of table. Traps are sent with this OID followed by the index number of the table entry that generated the trap. For example, if the values at index 5 of this table generated a trap, the name of the trap would be .iso.org.dod.internet.private.enterprises.edsMain.dTrap. dTrapDeviceTable.dTrapDeviceEntry.dTrapDeviceIndex.5. The numeric value is 1.3.6.1.4.1.31440.2.2.1.1.5. An integer value is sent with the trap, which indicates what state change caused the trap. Using the dTrapDeviceHighThreshold, dTrapDeviceLowThreshold and dTrapDeviceHysteresis 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) dTrapDeviceHysteresis values are not checked for validity, use them with caution. 3) A trap must be enabled to be sent. 4) The dTrapDeviceROM must be set to an active device or a trap will not be sent. 5) The health of the 1-wire device must be greater than 0 or no trap will be sent. 6) The dTrapDeviceVariable must be valid. For exmaple, the DS18S20 has 3 variables as follows: Temperature, UserByte1 and UserByte2. These are numbered 0, 1 and 2 respectively. A setting of 3 or above is invalid. 7) The dTrapTable must be programmed correctly for traps to be sent. The respective table entry must be enabled and have a valid IP address. Community strings are not used by the SNMP server.