Alarm linking

When the DataMiner System detects that a parameter no longer has a value that is considered normal, it creates an alarm record with the following properties:

Property	Value
Owner	System
User Status	Not Assigned
Alarm Type	New Alarm
Status	Open

From that moment, every subsequent change to that alarm (severity changes, ownership changes, masking or unmasking, comments added, etc.) will result in the creation of a separate alarm record that will replace the original record.

As long as the parameter in question does not have a value that is considered normal, the Status property of these replacement records will be “Open”. The moment the parameter again has a normal value, a final replacement record will be created. The Status property of this last record will be “Cleared” or “Clearable”, depending on the value of the “AutoClear” alarm setting.

Thanks to this method of alarm linking, (nearly) every alarm in the DataMiner System will be represented by a series of linked alarm records, also known as an “alarm tree”, reflecting the entire alarm life cycle.

Note

If an alarm update does not change the severity of the alarm, from DataMiner 10.0.12 onwards, the alarm record can be combined with the previous records into one consolidated event (also known as "alarm squashing"). This behavior can be enabled in the MaintenanceSettings.xml file. For more information, see AlarmSettings.MustSquashAlarms.

Tip

See also: Clearing alarms