We use PING sensors as master sensor for the devices to be monitored and have configured them to immediately switch to "down" state. However, this does not seem to work, because we can see a warning state one interval before down state in the sensor protocol.

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Do you really see the warning state one complete interval (by default 60 seconds) before the "down" state? Or is the "warning" state just a few milliseconds before the "down" state?

The latter would be the expected behavior. Background: with most sensors after a failed scan PRTG performs an immediate re-scan (within the same scanning interval) and if these both fail, the sensor goes into down state.


Feb, 2022 - Permalink

Ping Sensor has a 30 seconds interval. Here the last protocol entries: 26.02.2022 03:13:22 Ping OK 0 ms 26.02.2022 03:12:58 Ping Fehler Request timed out (ICMP-Fehler # 11010) 26.02.2022 03:12:32 Ping Warnung Request timed out (ICMP-Fehler # 11010) 25.02.2022 21:43:30 Ping OK 0 ms The error occurs 26 seconds after the warning state within the same interval. This is really normal behavior? This is not my understanding of the word "immediatly"!


Feb, 2022 - Permalink

26 seconds is indeed too lang and not the desired behavior. I couldn't reproduce this behavior on my side, so if you want us to take a closer look feel free to send us screenshots of the sensor (log, history, settings) as well as log files from PRTG to support@paessler.com


Mar, 2022 - Permalink