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

Sandeep Verma · ‎08-20-2014

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

Sandeep Verma · ‎08-20-2014

Thanks Leo,

Here's the output

TDR test last run on: August 21 09:34:08

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi3/0/28 100M Pair A 0 +/- 1 meters Pair A Normal
Pair B 0 +/- 1 meters Pair B Normal
Pair C 2 +/- 1 meters N/A Open
Pair D 23 +/- 1 meters N/A Short

View solution in original post

Leo Laohoo · ‎08-20-2014

Do this:

Command: test cable tdr interface Gi3/0/28;
Wait for approximately 5 to 7 seconds;
Command: sh cable tdr interface Gi3/0/28; and
Post the output to #3.

Sandeep Verma · ‎08-20-2014

Thanks Leo,

Here's the output

TDR test last run on: August 21 09:34:08

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi3/0/28 100M Pair A 0 +/- 1 meters Pair A Normal
Pair B 0 +/- 1 meters Pair B Normal
Pair C 2 +/- 1 meters N/A Open
Pair D 23 +/- 1 meters N/A Short

Leo Laohoo · ‎08-24-2014

Post deleted by author due to low rating by OP.

Sandeep Verma · ‎08-24-2014

Thanks Leo.....!

Leo Laohoo · ‎08-24-2014

Annnnd for that you rated my assistance a 4-star?????

SupportAC · ‎09-10-2014

Hi Leo,

Could you put the post again?

I have the same problem in my device and I don´t know the cause of the issue.

Thanks in advance.

Regards.

Ivan.

Leo Laohoo · ‎09-10-2014

Hi Ivan,

Open a new thread and send me a private message (PM) of the link. I will be happy to help you.

I will not post the recommendation here because the OP has marked my original recommendation with a low rating. If other people see my response with a low rating they might think that it's the incorrect or wrong course of action.

Charlie Jones · ‎12-19-2014

Hi Leo,

Would you be able to assist me with this same issue? I am seeing a port with the following error:

Dec 19 09:11:39.405: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi3/0/4: Power Controller reports Short detected

aukhadiev · ‎12-19-2014

Hi Charlie Jones,

This is are cosmetic bug CSCuo83872:

https://tools.cisco.com/bugsearch/bug/CSCuo83872

Please see attached pdf...

Leo Laohoo · ‎12-19-2014

Would you be able to assist me with this same issue?

Hi Charlie,

I am happy to assist but please open a new thread. I am not inclined to make any recommendation on this thread after the OP has rated my troubleshooting and diagnostics with a very pathetic score.

Anyone who gets to see my response with a low score will think of my post as BS.

If you are able to create a new thread and PM me the link, I will respond.

SupportAC · ‎09-10-2014

Hi Leo,

Could you put the post again?

I have the same problem in my device and I don´t know the cause of the issue.

Thanks in advance.

Regards.

Ivan.

onlinesaurabh · ‎03-19-2015

@Sandeep Verma

It's a bug man!

johnnylingo · ‎06-16-2015

I'm seeing this too on a 3650 switch with an AIR-LAP1142N-A-K9 attached. Was working fine until a few days ago.

Does this indicate someone swapped in a bad cable, or could it be a false positive? It's in a remote office 8,000 miles away, so visually inspecting this won't be easy.

#show cable-diagnostics tdr interface gigabitEthernet 1/0/1
TDR test last run on: June 17 12:06:37

Interface Speed Local pair Pair length        Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/1   auto Pair A     1    +/- 1 meters N/A         Short
                Pair B     1    +/- 1 meters N/A         Short/Crosstalk
                Pair C     0    +/- 1 meters N/A         Normal
                Pair D     0    +/- 1 meters N/A         Normal

Leo Laohoo · ‎06-17-2015

The patch cable nearest the switch is bad, Johnny. Get someone to replace the cable and chop it up.