logs in c2960-X switch

yeow_km · ‎02-19-2014

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?

Leo Laohoo · ‎02-19-2014

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 · ‎02-19-2014

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 · ‎02-19-2014

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!

yeow_km · ‎02-19-2014

ok, will do that.