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Channel : value type "Delta" display




I have setup a snmpcustomsensor (oid) wich return an integer. This value is generated from a postfix server (total sent mails) with snmp extend.

On OID Settings, I've choosen the value type : Delta. I selected this option because I want to be alerted of the number of emails sent over a period of 1 hour and over 4 hours.

In the "overview" tab, I want to set an alert threshold (Example: Alert if the number exceeds 100). But I can only modify the "Last value (speed)" parameter.

How can I set thresholds on the "Last Value (Volume)" parameter ? Below, a screenshot of my sensor : Custom Sensor

channel custom-sensor extend value

Created on Apr 25, 2023 12:25:31 PM

Last change on Apr 27, 2023 6:51:17 AM by  Felix Wiesneth [Paessler Support]

1 Reply



Hi there,

The delta option will calculate the difference between the current and the latest value. This means that if you want to trigger an alarm dependent on the last value, you shouldn't use this option. Therefore I would recommend to use the option to just show the latest value.

Kind regards

Felix Wiesneth - Team Technical Support

Created on May 2, 2023 11:00:01 AM by  Felix Wiesneth [Paessler Support]

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.