Switch port in err-disable state

Switchport in an err-disable state due to MAC Adress conflict.

Have cleared the DHCP bindings which cleared the err-disable error, but now have no connectivity.
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cleared the err-disable error
Cleared root cause, or removed port err-disabled state?

It was not stated model/vendor, but generally if error auto recovery is not configured, you should bounce port to make if functional.

interface gi1/0/1
 no shut

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Member_2_6498066Author Commented:
Cisco 3750
Did bump the port.
Now it says not connected.
Member_2_6498066Author Commented:
Now it is again err-disabled.
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Member_2_6498066Author Commented:
Really strange.

Computer next to it has the exact same MAC.

Checked using ipconfig/all

This strikes me as very odd as both computers have been working for months.

Is there something in DHCP bindings that would give the same MAC to both computers and fool ipconfig/all

I did clear DHCP bindings.

Only the one computer I am trying to put back on the network showed a binding.

This puzzles me.
Port configuration?
Member_2_6498066Author Commented:
Thank you.
You're welcome.
Generally, two exactly the same MAC addresses can't be present in the same VLAN.
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