Learning How to Create Behavior Models - How to Use Behavior Models - Review and Summary -
How to Create Useful Behavior Models      How to Use Alarm Scope in Behavior Models

Review and Summary

The following section includes exercises and questions to help you review what you learned in this chapter.

Review Exercises

Complete the following exercises using the skills you learned in this chapter.

1. Create an alarm that uses a counter to detect a node that is persistently unresponsive. Some of the actions you will take include:
   1. Creating a new alarm, naming it 1PersistentDeadNode, that includes the states Ground, NoResponse, DeadNode
   2. Adding a transition Ground > ERROR > NoResponse
   3. Adding a circular transition for the NoResponse state that starts an Alarm Counter that will fire the deadNode trigger after three transitions
   4. Adding a transition from the NoResponse state to the Ground state that removes the Alarm Counter should it receive NerveCenter's built-in RESPONSE trigger
   5. Adding a transition NoResponse > deadNode > DeadNode that uses the Set Attribute action to assign the Troublemakers property group to the unresponsive node
2. Assign a bad community name to a device and test the 1PersistentDeadNode alarm.

Review Questions

Answer the following questions using the knowledge you learned in this chapter. See the Answers to the Chapter 6 Review Questions on page 127.

1. Describe the three components of a behavior model.

   

   

   

1. When creating a behavior model with a timer component, why is the Clear Trigger action necessary?

   

   

   

2. When creating behavior models, what are the similarities and differences between counters and timers?

   

   

   

Summary of What You Learned

In this chapter you learned how to create useful behavior models in NerveCenter. You also learned several new concepts. The checklist below should help you review once more before going to the next chapter.

You learned:

• How to create behavior models that detect a persistent problem
• How to create a behavior model to detect unresponsive nodes
• How to use a counter in a behavior model
• How to use a timer in a behavior model
• How to use built-in triggers

You also were introduced to the following concepts:

• Behavior model
• Counter
• Timer