I have a site where there is a Cisco 3650 acting as a core switch and a pair of stacked Dell 6224s (ugh) acting as a distribution layer switch. There is a port channel between the Core and distribution switches. Oddly though according to Solarwinds the Dell stack is reporting several thousand packets that it is receiving that it is discarding, but none the other direction. I don't see that either port even close to maxing out the bandwidth and there doesn't seem to be much of any pattern with bandwidth utilization either. None of the switches are close to CPU or memory over utilization. LACP priority values match. I don't see any type of obvious mismatches on interfaces. What am I missing here?