Designing and Managing Behavior Models - Using Alarms -
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Using Alarms

Alarms enable you to monitor the state of objects such as interfaces and devices. The figure below depicts the role that an alarm typically plays in a behavior model.

The alarm contains a state transition diagram, and transitions are caused by triggers that are usually generated by polls and trap masks. (Triggers can also be generated by alarms.) When the alarm manager sees a trigger whose key attributes -- such as name, subobject, and node -- match those of a pending transition in an alarm, the manager causes this transition to take place. Any actions associated with the transition are performed when the transition occurs.

The remainder of this chapter explains in detail how to create and work with alarms. Refer to the following sections:

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