Description: The snmp553sAlarmHistoryTable contains entries that report the history of all supported alarms. The history consists of the the number of times the alarm has occurred since last history reset, the time of the first alarm occurence (hours,minutes, seconds,day,month,year), and the time of the last alarm occurrence (hours,minutes,seconds,day,month,year).

The structure of the table is such that alarm status is supported on a unit or interface basis, and then on an alarm type basis within the interface. For simplicity sake and to support the reporting of status of all alarms, a unit is treated as an interface 1 in this table.