For the purposes of this guide, alarms, events, and traps are defined as follows:

  • alarms are events that are visible in the Alarm Dashboard
  • events are triggers that initiate and send an alarm and/or trap
  • traps are alerts that are created and sent by SNMP

Events are classified into the following types as shown in the following table.

Reported alarms that are enabled to appear in the Alarm Dashboard all have associated clearing events. A clearing event deletes the associated critical, major, and minor alarm from the Alarm Dashboard panel and reduces the alarm count for the corresponding severity type.

Clearing events never appear in the Alarm Dashboard and do not increment the count of a severity type.

Note

Some critical, major, and minor alarms also never appear in the Alarm Dashboard and do not increment the severity type.

Event Types and Severity Levels

Event Type

Description

Appears in Dashboard

Critical

The critical event severity level indicates that a service affecting condition has occurred and immediate corrective action is required. Such a severity can be reported, for example, when an application becomes totally out of service and its capability must be restored. For example:

  • A total system failure that results in loss of all transaction processing capability such as call processing or data transmission.
  • The reduction in capacity or traffic handling capability such that the system cannot handle expected loads.
  • Any loss of safety or emergency capability such as not being able to complete 911 or E911 calls.
  • The inability of the system to perform automatic system reconfiguration.
  • The inability to restart a processor or the system.

Yes

Major

The major event severity level indicates that a service affecting condition has occurred and urgent corrective action is required. Such a severity can be reported, for example, when there is a severe degradation in the capability of the application and its full capability must be restored. For example:

  • The loss of billing capability.
  • The corruption of billing system databases that requires service affecting corrective actions.
  • The loss of access for maintenance or recovery operations.
  • The inability to provide any required critical or major trouble notification.

Yes

Minor

The minor event severity level indicates the existence of a non-service affecting fault condition and that corrective action should be taken to prevent a more serious fault. Such a severity can be reported, for example, when the detected alarm condition is not currently degrading the capacity of the system.

Yes

Warning

The warning event severity level indicates the detection of a potential or impending service-affecting fault before any significant effects have been registered. Action should be taken to further diagnose (if necessary) and correct the problem in order to prevent it from becoming a more serious service-affecting fault.

No

Clearing

The clearing event severity level indicates the clearing of previously reported alarms. All critical, major, and minor alarms require a corresponding clearing event. When the Alarm Dashboard receives a clearing event, the alarm associated with the clearing event is removed from the Alarm Dashboard.

No



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