> On Oct 12, 2016, at 12:26 AM, John R Pierce <pie...@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.
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