Acknowledgement synchronization example

For this example:

• Alarm Name, Alarm Class, and Alarm Type are selected as design-time key fields.

• Alarm Group is selected as a run-time field.

The following alarm record map file was created using Microsoft Excel.

The Pmp1IP alarm is mapped to the IPPmp1 alarm. Both have a Class of VALUE and a Type of HIHI.

The Pmp1OP alarm is mapped to the OPPmp1 alarm. Both have a Class of VALUE and a Type of Lo.

• When the HiHi alarm for Pmp1IP is acknowledged at the primary alarm node, the acknowledgment also appears on the HiHi alarm for IPPmp1 at the secondary provider node, provided that the alarm group names on both nodes remain the same.

• When the Low alarm for Pmp1OP is acknowledged at the primary alarm node, the acknowledgment also appears on the Low alarm for OPPmp1 at the secondary provider node, provided that the alarm group names on both nodes remain the same.

Acknowledgement synchronization occurs only if the design-time and run-time mapping match.

You can select any combination of design-time and run-time alarm record fields for mapping. However, make sure that the mappings do not result in multiple references.

For example, if two alarm record fields such as Class and Priority are selected, it is very possible that more than one alarm matches the criteria. In such a case, the Hot Backup synchronization is not guaranteed to work. In the process of propagating the acknowledgment, a random alarm that matches the criteria may also be picked up, while other matching alarms may be left unacknowledged.