> On Oct 12, 2016, at 12:26 AM, John R Pierce <pierce at hogranch.com> wrote: > > the switch ports kept going offline on us. Not finding anything exactly like this... Closest I could find is CSCuu81949 Open a Cisco TAC case and upload a Nexus 9000 tech support (`tac-pac`) to investigate further. Is "port security" enabled on these ports? Does this port double as a LOM/IPMI port? What driver is being used `ethtool -i eth#`? Any OS bonding? Any switch port-channel/vPC? That NIC chipset is a few years old so it's not like that NIC/OS/switch is a combo that hasn't been tried/tested.