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logs in c2960-X switch

Unanswered Question
Feb 19th, 2014
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one of my new C2960-X switch is constantly showing the following in the logs


Feb 20 03:25:13.867: %ILPOWER-7-DETECT: Interface Gi1/0/16: Power Device detected: Cisco PD

Feb 20 03:25:14.653: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/16: Power granted

Feb 20 03:25:14.877: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/16: PD removed

Feb 20 03:25:23.272: %ILPOWER-7-DETECT: Interface Gi1/0/16: Power Device detected: Cisco PD

Feb 20 03:25:24.115: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/16: Power granted

Feb 20 03:25:24.206: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/16: PD removed


the port is connected to cisco ip phone 6921.

could the port be faulty?

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Leo Laohoo Wed, 02/19/2014 - 19:40
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DO this:


1.  Command:  test cable tdr interface Gi1/0/16;

2.  Wait for approximately 5 to 7 seconds;

3.  Command:  sh cable tdr interface Gi 1/0/16; and

4.  Post the output to #3.

yeow_km Wed, 02/19/2014 - 19:47
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switch#sh cable-diagnostics tdr interface gigabitEthernet 1/0/16

TDR test last run on: February 20 11:42:01



Interface Speed Local pair Pair length        Remote pair Pair status

--------- ----- ---------- ------------------ ----------- --------------------

Gi1/0/16  auto  Pair A     30   +/- 10 meters N/A         Short/Crosstalk

                Pair B     30   +/- 10 meters N/A         Short/Crosstalk

                Pair C     30   +/- 10 meters N/A         Open

                Pair D     30   +/- 10 meters N/A         Short/Crosstalk

Leo Laohoo Wed, 02/19/2014 - 19:55
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OMFG!


Where did you get your cable from????  THROW IT AWAY.


For PoE you need all the result to be "NORMAL".  A result of "Short" is bad.  A result of "Crosstalk" is worst!

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