Device continuously disconnects and reconnects from network

[GregH.NY]

Hello

We have a network device that keeps losing and regaining connection to our network.

It happens at all different times of the day. It can last for a few seconds up to about 20 minutes.

We tried using different cables, different ports, changing the IP address of the device setting it both statically or dynamically. We tried a brand new device out of the box into the same switch.

But the issue keeps happening.

Attached is the output for show log | i 0001.r093.f3c0

Any help is greatly appreciated.

Thanks

Greg

[Leo Laohoo]

So if you remove the Dot1X configuration (just a VLAN and portfast) what is the device doing?
Post the complete output to the command "sh interface <BLAH> controll".
NOTE: Please DO NOT post the screenshot of the output.