Description: The index of the snmpEventEntry that is used when a falling threshold is crossed. The snmpEventEntry identified by a particular value of this index is the same as identified by the same value of the snmpEventIndex object. If there is no corresponding entry in the snmpEventTable, then no association exists. In particular, if this value is zero, no associated event will be generated, as zero is not a valid snmpEventIndex.

An attempt to modify this object will fail with an `inconsistentValue' error if the associated snmpAlarmStatus object would be equal to `active' both before and after the modification attempt.