Q1 - Try this - go to Admin, Manage Nodes, maximise the node in question, then tick all of the interfaces that you don't want to monitor. Then click on 'Edit Interface' and tick the box that says 'Display interface as unplugged rather than down'.
Q3 - If a discovery is finding systems with multiple IP addresses, the simplest thing to do would be post discovery mark the alternative address and click Ignore. Then correct the other interface if necessary and it shouldn't bother you again.
Q4 - I'm not 100% sure but as above, if you mark it as Ignore in the discovery results it shouldn't change again.
Q5 - Not sure if it's possible - the only thing I can suggest is setting a Custom job to run every x hours, say 168 hours for once a week. Only caveat is kicking the original run off at 2am on a Sunday... not ideal! Someone else might be able to suggest something.
Apologies for the late reply (I was seconded elsewere and just getting back to Orion).
I tired your solution for Q1 however when I look at 'Interface Elements' under Admin->Polling Engine the number counter remains the same. Shouldn't this number decrease once a selection of interfaces have been unmanaged?
One more thing. Following on from Q1, once an interface has been selected as 'unplugged rather than down', if I drill down on the device and re-select the same interface the 'unmanage' button is highlighted, shouldn't the 'unmanage' button remain greyed out because the interface has already been selected as 'unplugged rather than down'?
This is all very confusing and none of it is documented.
Like I said in my original post what I want to do is select interface/s -> and permanently tell NPM to NOT manage/poll/collect stats for those interfaces. And once this is done have this reflected in the number interface/s being managed (which I am guessing is 'Interface Elements'.
Could you tell me what is missing in the documentation? I'll do some research and see if I can hunt it down--otherwise, I'll let the writer know.