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Overview

The Supervision Service uses decision tables, where you can define different actions to be taken depending on which conditions are met; log in System Log, use an overload protection configuration, or generate an event. You can use any MIMs available in the workflow for configuration of conditions, e g throughput, queue size, etc.

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The Supervision Service is available for real-time workflows and can be configured in the Services tab in the Workflow Properties dialog. The supervision service with action overload can also be manually triggered with mzsh commands, in case it is needed for maintenance or other purposes. If the service is manually triggered, it has to be reverted to automatic mode for the settings in the Services tab to take effect once again.

Configuration of the Supervision Service

To open the configuration for the Supervision Service, open the Workflow Properties dialog in a real-time workflow configuration, click on the Services tab, click on the Add button, select the Supervision option and click OK.

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Creating a Decision Table

When you select to add a new decision table, the Add Decision Tables dialog opens.

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1. In the Add Decision Tables dialog, click the Action Lists button.
    

2. Click the Add button to open the Add Actions dialog.
    

3. Click the Add button to add actions.

    

   Add Action

   Item	Description
   Action	In this drop-down list, you select if you want an entry to be logged in the System Log, or if you want an  Overload Protection configuration to be configured, or if you want to generate a  Supervision Event that can be sent to various targets depending on how you configure your Event Notifications. Note title Note! The Overload Protection option is only available if you have Diameter or Radius agents in your workflow.
   Description	Enter a description for this action.
   Reject	This option is only available when you have selected to configure an Overload Protection action and determines the percentage of requests that should be rejected; 0, 25, 50, or 100 %.
   Strategy	This option is only available when you have selected to configure an Overload Protection action and determines if you want to apply this action on all types of requests or if you only want to apply them to the requests following a selected Diameter or Radius overload protection strategy.
   Content	This option is only available when you have selected to configure a Supervision Event action and determines the content of the event. See Event Types(3.0) for more information.
   Severity	This option is only available when you have selected to configure a System Log action and determines the severity of the log entry; Information, Warning, Error, or Disaster.
   Message	This option is only available when you have selected to configure a System Log action and allows you to enter a message that will be visible in the System Log.

   
   

4. In this dialog, select which type of action you want to use; System Log, Overload Protection, or Supervision Event. Depending on what you choose, the options in the dialog differ.
    

5. If you have selected an Overload Protection action:
   
   • Enter a description in the Description field.

   • Select the percentage of messages you want to reject; 0, 25, 50, or 100 % in the Reject drop-down list.

   • In the Strategy drop-down list, you select if you want the action to be applied for all requests, or only for requests following any of the Diameter overload protection strategies.
      

6. If you have selected a Supervision Event action:
   

   • Enter a description in the Description field.

   • Enter the event content in the Content field. This content can then be used when configuring Event Notifications for this event.
      

7. If you have selected a System Log action:
   

   • Enter a description in the Description field.

   • Select severity in the Severity drop-down list.

   • Enter an optional message in the Message field.
      

8. Click Add to add the action to the action list.
    

9. Repeat steps 4 to 8 until you have added all the actions you want to have in the action list and then click  Close when you are finished.
   You will return to the Add Actions dialog.

   Add actions

   
   

   Item	Description
   List	Enter a name for the action list in the Name field.
   Action	This section contains all the actions you have added to this list.

   
   

10. Give the list a name and click the Add button to add the action list in the Create Decision Tables dialog.
     

11. Repeat steps 3 to 10 until you have created all the action lists you want to have and then click Close when you are finished.
    
    You will return to the Create Decision Tables dialog.

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Case 3 
If the Incoming messages exceed 150, 100 % of the incoming Diameter Credit-Control Initial requests will be rejected.

MZSH Commands

If you need to manually trigger or clear the supervision service with action overload, e g for maintenance or other purposes, you can use the mzsh wfcommand. See the wfcommand [hide]mzsh[/hide][hide]3.0[/hide]for more information.