This read-create enumerated value, defaulting to risingOrFallingAlarm, sets which single alarm - risingAlarm(1), fallingAlarm(2), or risingOrFallingAlarm(3) - may fire based on the very first sample taken after this entry becomes valid; it cannot be modified once the entry's status is valid. Admins set it to control whether an alarm fires immediately based on the starting condition of the monitored variable, rather than waiting for a subsequent threshold crossing. For example, an admin who only cares about detecting a rising condition from the outset would set h3cRmonExtAlarmStartupAlarm to risingAlarm(1) to suppress an unwanted initial falling-alarm notification.