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I get email alerts for a sensor being down and it says 0 seconds for the amount of downtime.



I get at least 1 email a day saying a sensor is down and then immediately get another email saying it is back up. In the second email, it will have downtime listed as 0 seconds. I have the alerts set to email after 20 seconds of downtime so this doesn't make any sense. Please help! Thanks!

0-seconds email prtg

Created on Jul 12, 2013 5:29:25 PM

1 Reply




thank you very much for your KB-Post. Please be aware that PRTG needs at least two consecutive Down-Scans, on a sensor, to calculate a downtime. So, the scanning interval is most likely longer than 20 seconds (which seems to be the latency here on the Trigger), so a 2nd Down-Scan is not yet done. We would recommend to simply set the latency on the Trigger to be at least as long as the Scanning Interval.

best regards.

Created on Jul 15, 2013 11:46:01 AM by  Torsten Lindner [Paessler Support]

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