Feature Request for interface Discards with following information:
Not sure there is a way to do either of the last two... At least on ifInDiscards, since they didn't make it far enough up the stack to be in a newflow or packet capture.
On ifOutDiscards it's only theoretically possible, but I don't think anything exposes that information.
It might be a close approximation to use TCP retransmissions to correlate the source of the dropped packets, but it's not a direct packet-for-packet mapping to the dropped packets, just a numbers correlation.
Who knows... these soalrwinds programers are quite amazing. Maybe they could map two netflows on either side of the interface in question and detect the exact dropped packets.
Thanks for your reply.