Controller port error, Interface Gi3/0/28: Power Controller reports Short detected

[Sandeep Verma]

Hi All,

Recently deployed  Cisco Catalyst 3850-48P-E Stack Switch.  I am receiving a lot of syslog messages 

''''Controller port error, Interface Gi3/0/28: Power Controller reports Short detected''''

Switch Software version : 03.03.02SE RELEASE SOFTWARE (fc2)

I have IP Phones and some access-points on these switches to supply power to. These messages have been populating recently only.

Can anyone kindly help with details of this issue and resolution as well ?

Many Thanks

Sandeep

[michael.roshol]

Thats  not "Bad Cable " instead ,  we got the same error, which results  in shutting the Port down with "Error -disabled"  ! This  only occurs  with Model 9300 + T1  Cable ....connected to Tw  Ports ....yes i know  T 1 is crap , but there  is no other Chance  at that special Customer  atm 

Solution : ...."power inline never"    on  every inv. Port 

Nov 24 11:14:40.678: %ILPOWER-7-DETECT: Interface Tw1/0/15: Power Device detected: Cisco PD
Nov 24 11:14:40.789: %ILPOWER-7-DETECT: Interface Tw1/0/16: Power Device detected: Cisco PD
Nov 24 11:14:42.524: %ILPOWER-5-IEEE_DISCONNECT: Interface Tw1/0/15: PD removed
Nov 24 11:14:42.525: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Tw1/0/15: Power Controller reports power Tstart error detected
Nov 24 11:14:42.526: %ILPOWER-5-IEEE_DISCONNECT: Interface Tw1/0/16: PD removed
Nov 24 11:14:42.526: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Tw1/0/16: Power Controller reports power Tstart error detected

Tw2/0/7 auto Pair A 25 +/- 10 meters N/A Short/Crosstalk
Pair B 22 +/- 10 meters N/A Short/Crosstalk
Pair C 0 +/- 10 meters N/A Open
Pair D 1 +/- 10 meters N/A Open