Method to see every dropped packet / failed poll?
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Occasionally I have a need to troubleshoot devices with very rapid pings/polls (at least once a second, ideally every 100ms) and need to be able to see every dropped packet. I want to override the default behavior on that DCI so if it doesn't receive a response within a set period of time, it doesn't just ignore it and try again on the next poll. It will still log the result (simple transform script to show -1 or some other value would be fine) so it easily stands out on a line graph and in the history
Is this possible to do?
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Not really, system was not designed for this kind of usage without external tools.
Depending on your task, you can script around nxget/nxsnmpget/nxsnmpget.
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Alternatively, can a transform script be used? I'm not sure how the polling engine works but if I did an SNMP poll every second, can I use something simple like
if ($1 == null) return -1;
return 1;Will null (or any other value) be returned in the case of a failed poll? Or does NetXMS not consider it 'polled' until a response comes back and thus will not log anything in history unless it actually receives a result
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Transformation script is launched when data collection returns some value. As far as I understand, it will not be launched if data collection returned error.
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