Interface flapping in some hosts

[mmacdonald70]

I am having an odd issue with some ESXi hosts that I have just migrated to ACI.  There are a total of 7 hosts.  Identical hardware and config but 2 of the hosts have their interfaces that periodically go down and them back up.  If happens every few minutes with a  error on aci of "Port is down, reason being notconnect(connected)".

Does anybody know where to start looking for an actually reason for them going down?

[balaji.bandi]

Port is down, reason being notconnect(connected)

BB - in the network world this mean any physical issue check any connection issue

the host you mentioned inside esxi VM ? or Physical Host ?

[shrikantirgond07]

Can you please check is there any mac moves? or port is going into down or port going into an error-disabled state?

I have observed the same behavior in my environment. I found there were mac moves happening which was resulting in port go into an error-disabled mode.