Votes:
a report for a sensor that was working fine before now shows no more data.
I recently changed the scanning interval from 5min to 1min.
Created on Jul 30, 2012 12:01:08 PM by
Last change on Jul 30, 2012 12:03:34 PM by
1 Reply
Votes:
You changed the scanning interval from 5min to 1min on these sensors.
PRTG ignores values in the calculation that are too far apart. The formular for this distance is 3*interval + 2*timeout. The idea is that if the scanned values are further apart it is likely there was a problem and the values could cause a false calculation. Like overflows that can not be relieably detected in this case.
With reducing the scanning interval this distance changed from 910s to 190s. Since you were monitoring with a 300s interval all values are ignored.
You can get PRTG to use the values with setting a high SNMP timeout value (like 90s). If you have frequent timeouts in SNMP you should reduce the value again after the report to prevent a lot of sensor hanging in the timeout.
Created on Jul 30, 2012 12:02:00 PM by
Last change on Aug 2, 2012 9:44:37 AM by
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