Video device Polycom dot1x configured going down after sometime of its connection

[gurbinder.kabbay]

Hi Experts,

I am facing a problem when i am connecting the polycom video device to 802.1x port on the switch (c3850 in stack) and its going down. it is showing below in logs:

Interface Gi4/0/37: Power Device detected: IEEE PD
%ILPOWER-5-IEEE_DISCONNECT: Interface Gi4/0/37: PD removed
 %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi4/0/37: Power given, but State Machine Power Good wait timer timed out
%ILPOWER-5-IEEE_DISCONNECT: Interface Gi4/0/37: PD removed
%LINK-3-UPDOWN: Interface GigabitEthernet4/0/37, changed state to up
%LINK-3-UPDOWN: Interface GigabitEthernet4/0/37, changed state to down

BUG Detail: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvf33653/?rfs=iqvred

i checked and it is related to above bug but, bug is fixed in 16.12.4 and i am using this IOS only. it should not hit this device. Moreover, there are 4 switches in stack and same device is working on switch number 3. so , it should not effect only one switch in stack as well.

Please help regarding this.

Regards,

Gurbinder

[joseponceiii]

Just to check, is there any difference on the interface configuration between connected to switch 3 and other switches?

[paul driver]

Hello

If this doesnt happen on all the port pertaning that particular switch It could be in this instance that you have a faulty poe port?