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How can I configure sensors using speed limits to keep the status for more than one interval



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I want my SNMP Trap Receiver, Syslog Receiver or Event Log sensors to keep the error status, over more than one interval, even if the cause does not persist. How can I achieve this?

event-log eventlog prtg snmp-trap snmptraps syslog syslog-sensor trap trap-receiver wmi-eventlog

Created on Feb 14, 2017 7:18:59 PM by  Felix Saure [Paessler Support]

Last change on Feb 15, 2017 2:59:54 PM by  Gerald Schoch [Paessler Support]

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Accepted Answer



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This article applies to PRTG Network Monitor 16 or later

Using Triggers to Modify the Sensor's Status

Out of the box, PRTG will only change the sensor status for one single interval. If the next scan results in another status, the status will change accordingly.

There is a workaround which will apply to these sensor types:

Steps to Go

  1. Open the channel settings of
    • the New Records channel of the Event Log sensors
    • the Errors channel of the Syslog Receiver or Trap Receiver sensor
  2. Enter the value 0,00000001 into the Upper Error Limit (#/min) field. This will ensure, that the status will immediately change as soon as an alarm occurs and the limit is exceeded.
    Note: This is the default setting for the Syslog and Trap Receiver sensors.Channel Settings
    Full Size Image
  3. This will set the sensor in down status as soon as a message that matches the sensor filter rules arrives. This will allow you to immediately trigger a notification.
  4. Click the Notifications tab of the sensor and choose these settings: Zero Trigger
    Full Size Image

This will immediately trigger a message and inform you about the issue.

Advanced Notes and Guides

We also want to provide you with information, which will allow you to display the Alarm status in PRTG until it's resolved. Therefore, follow these steps to setup the required API calls as well as the settings in PRTG:

  1. Create a device with a Green IT SensorGreen IT Preview
    Full Size Image
  2. Create a new notification and choose Execute HTTP Action. This is where the PRTG API comes into play: HTTP-Notification-Settings
  3. Enter this code:
  • Note: You will find your passhash on the Setup | System Administration | User Accounts page for the respective user.
  • Now you will be able to assign the correct object ID of the newly created Green IT sensor to the notification. This is fairly straight forward, just replace the objectid by the ID value shown on the Overview tab of your Green IT sensor.

Get the Object ID
Full Size Image

  • You can clear the simulated error status by right clicking the sensor's name and by clicking Resume


Following this guide will allow you to quickly change the status of one sensor, based on a speed trigger or limit assigned to a particular sensor based on #/s results and to get a persistent overview of previews events.

See Also

Best regards, Felix

Created on Feb 14, 2017 9:28:41 PM by  Felix Saure [Paessler Support]

Last change on Jul 30, 2018 11:32:55 AM by  Brandy Mauff [Paessler Support]



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totally lost in this manual. green IT sensor created for the new device, or can be on existing device? New notification means in setup under account settings? Where is objectid in 'just replace the objectid by the ID value shown on the Overview tab of your Green IT sensor.'? I can see ID in green IT sensor, but where to assign it??? Notification does not contain field named 'objectid'.

Created on Sep 4, 2018 12:45:03 PM by  Igoris Seimys (0)



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Hello Igoris,

The Green IT sensor can be added to the same device. If you then add a new notification and choose Execute HTTP Action, you can enter the ID into this webhook:


This can look like this if the ID of the sensor is 9000: http(s):YourServerIP/api/simulate.htm?id=9000&action=1&username=YourUserAccount&Passhash=YourPasshash

Does this help you creating this workaround?

Kind regards,
Felix Saure, Tech Support Team

Created on Sep 5, 2018 10:22:12 AM by  Felix Saure [Paessler Support]

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Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.