02-19-2014 07:34 PM - edited 03-07-2019 06:18 PM
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?
02-19-2014 07:40 PM
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.
02-19-2014 07:47 PM
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
02-19-2014 07:55 PM
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!
02-19-2014 07:59 PM
ok, will do that.
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