The problem I am having is that we are receiving Device Up alarms on devices which have not produced any Device Down alarms??
The traps Poll interval is 15 seconds, the timeout is 30 seconds and the option to "Send Down Event on timeout ONLY" is selected.
The devices that generate the Device Up alarm have not actually gone down so these are false positives but the question is why?
Device Down is generated by the "device status change - Contact Lost"
Device Up is generated by the "device status change - Contact Established"
Here are screenshots of all the SNMP polling settings.
Is it something to do with the "Send Down Event on timeout ONLY"??