We have a few devices - anecdotally it appears to only be HPE switches when stacked in numbers greater than 4 - anyway, these devices have all scanned in initially via a network discovery and interfaces, etc all selected at that time.
Now that we are getting ready to go live with alerting (this client is still on our old tool - WhatsUp Gold) I need to adjust the interfaces being monitored as some have been missed off or incorrect ones included. However, whenever I click list resources for these devices and then click refresh it appears to timeout.
I say appear as it completes its process (eventually) and offers a submit button but rather than seeing the expected >200 interfaces I get presented with a random number between 6 and 20. Secondly, it also causes an SNMP blip on our current tool indicating that various interfaces and / or the device is down. However I can still SSH to it and interrogate as necessary. In one stack it has flagged up an issue on one of the switches which we are addressing - but in general, list resources fails to complete on devcies that aren't having issues.
I have also tried to run list resources at various stages of the day to see if the issue is one of load from the client end. Also, to date, the client hasn't complained of any issues so it appears to be a purely SNMP issue. Beyond this, if I run a fresh scan with our current tool it completes successfully, albeit slowly, but then that's the way that tool has always been.
For completeness sake, the current stack I'm trying to scan is a stack of 7 x HPE 5130's and when I say stack, before someone corrects me, then let me rephrase and say in HPE speak that's IRF.
Any thoughts before I raise a fault call?
EDIT: an SNMP walk of the device in question, from its assigned APE, works just fine.