3750 switch POE not working on all ports

Natalie Ramirez · ‎09-22-2015

I have a 48 port 3750 POE switch, POE works fine on ports 6, 13, 16, 17, 19, 20, 30, 42, 44. However, no other port will provide POE. If I move a cable from port 6 and plug it into port 5, no errors on switch, no power to phone. If I move it back to port 6, powers up exactly like it should.

Configuration on all 48 ports is exactly the same. I have tried "power inline" "never", "auto", and "static", makes no difference. I had to go port to port to find all the good POE ports, plug in, wait 10 seconds, move to next port.

Switch model number WS-C3750G-48PS-S

Running IOS version 12.2.25 SEB4

Is there a factory defect issue with POE on some 3750s?

Leo Laohoo · ‎09-22-2015

Post the complete output to the command "sh post" and "sh power inline".

Natalie Ramirez · ‎09-23-2015

switch#sh pow inl

Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
1 370.0 48.2 321.8
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Gi1/0/1 auto off 0.0 n/a n/a 15.4
Gi1/0/2 auto off 0.0 n/a n/a 15.4
Gi1/0/3 auto off 0.0 n/a n/a 15.4
Gi1/0/4 auto off 0.0 n/a n/a 15.4
Gi1/0/5 auto off 0.0 n/a n/a 15.4
Gi1/0/6 auto on 6.4 IP Phone 8945 2 15.4
Gi1/0/7 auto off 0.0 n/a n/a 15.4
Gi1/0/8 auto off 0.0 n/a n/a 15.4
Gi1/0/9 auto off 0.0 n/a n/a 15.4
Gi1/0/10 auto off 0.0 n/a n/a 15.4
Gi1/0/11 auto off 0.0 n/a n/a 15.4
Gi1/0/12 auto off 0.0 n/a n/a 15.4
Gi1/0/13 auto off 0.0 n/a n/a 15.4
Gi1/0/14 auto off 0.0 n/a n/a 15.4
Gi1/0/15 auto off 0.0 n/a n/a 15.4
Gi1/0/16 auto on 6.4 IP Phone 8945 2 15.4
Gi1/0/17 auto on 6.4 IP Phone 8945 2 15.4
Gi1/0/18 auto off 0.0 n/a n/a 15.4
Gi1/0/19 auto on 13.0 IP Phone 8831 3 15.4
Gi1/0/20 auto on 6.4 IP Phone 8945 2 15.4
Gi1/0/21 auto off 0.0 n/a n/a 15.4
Gi1/0/22 auto off 0.0 n/a n/a 15.4
Gi1/0/23 auto off 0.0 n/a n/a 15.4
Gi1/0/24 auto off 0.0 n/a n/a 15.4
Gi1/0/25 auto off 0.0 n/a n/a 15.4
Gi1/0/26 auto off 0.0 n/a n/a 15.4
Gi1/0/27 auto off 0.0 n/a n/a 15.4
Gi1/0/28 auto off 0.0 n/a n/a 15.4
Gi1/0/29 auto off 0.0 n/a n/a 15.4
Gi1/0/30 auto off 0.0 n/a n/a 15.4
Gi1/0/31 auto off 0.0 n/a n/a 15.4
Gi1/0/32 auto off 0.0 n/a n/a 15.4
Gi1/0/33 auto off 0.0 n/a n/a 15.4
Gi1/0/34 auto off 0.0 n/a n/a 15.4
Gi1/0/35 auto off 0.0 n/a n/a 15.4
Gi1/0/36 auto off 0.0 n/a n/a 15.4
Gi1/0/37 auto off 0.0 n/a n/a 15.4
Gi1/0/38 auto off 0.0 n/a n/a 15.4
Gi1/0/39 auto off 0.0 n/a n/a 15.4
Gi1/0/40 auto off 0.0 n/a n/a 15.4
Gi1/0/41 auto off 0.0 n/a n/a 15.4
Gi1/0/42 auto on 3.3 IP Phone 7821 1 15.4
Gi1/0/43 auto off 0.0 n/a n/a 15.4
Gi1/0/44 auto on 6.4 IP Phone 8945 2 15.4
Gi1/0/45 auto off 0.0 n/a n/a 15.4
Gi1/0/46 auto off 0.0 n/a n/a 15.4
Gi1/0/47 auto off 0.0 n/a n/a 15.4
Gi1/0/48 auto off 0.0 n/a n/a 15.4
switch# sh post
Stored system POST messages:

Switch 1
---------

POST: CPU MIC register Tests : Begin
POST: CPU MIC register Tests : End, Status Passed

POST: PortASIC Memory Tests : Begin
POST: PortASIC Memory Tests : End, Status Passed

POST: CPU MIC PortASIC interface Loopback Tests : Begin
POST: CPU MIC PortASIC interface Loopback Tests : End, Status Passed

POST: PortASIC RingLoopback Tests : Begin
POST: PortASIC RingLoopback Tests : End, Status Passed

POST: PortASIC CAM Subsystem Tests : Begin
POST: PortASIC CAM Subsystem Tests : End, Status Passed

POST: PortASIC Stack Port Loopback Tests : Begin
POST: PortASIC Stack Port Loopback Tests : End, Status Passed

POST: PortASIC Port Loopback Tests : Begin
POST: PortASIC Port Loopback Tests : End, Status Passed

Suresh Vinayagam Subramanian · ‎09-23-2015

Hi there ,

Hope you had already rebooted the switch . if not , i would try that first .

i guess, POE is working fine on 1/0/6 . Have you try moving the same cable and phone to gi1/0/6 . If not working then you can try below things. But redirect the logging to buffer instead of console as its debug command .

sh power inline gi1/0/5
Debug condition interface gi1/0/5
debug ilpower cdp
debug ilpower controller
debug ilpower events
debug ilpower port

once you done above capture then do the same on working port Gi1/0/6 ., so you can identify the difference between working and non-working ports.

HTH
Regards,
VS.Suresh.
*Plz rate the usefull posts *

Leo Laohoo · ‎09-24-2015

Thanks for the output.

I wouldn't bother troubleshooting this issue any further until the IOS gets upgraded. I mean 12.2(25)SEB-train is like, really old.

Richard Bradfield · ‎09-22-2015

please power cycle the switch , and then try again, then post the "show power inline" command if still not working, also the "show log" command.

Natalie Ramirez · ‎09-23-2015

switch# sh logg
Syslog logging: enabled (0 messages dropped, 1 messages rate-limited, 0 flushes, 0 overruns, xml disab
led, filtering disabled)
Console logging: level debugging, 2053 messages logged, xml disabled,
filtering disabled
Monitor logging: level debugging, 155 messages logged, xml disabled,
filtering disabled
Logging to: vty1(0)
Buffer logging: level debugging, 2053 messages logged, xml disabled,
filtering disabled
Exception Logging: size (4096 bytes)
Count and timestamp logging messages: disabled
File logging: disabled
Trap logging: level notifications, 2009 message lines logged
Logging to 192.168.48.132, 2009 message lines logged, xml disabled,
filtering disabled

Log Buffer (4096 bytes):
itEthernet1/0/13, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to down
1w1d: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/13: PD removed
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to down
1w1d: %ILPOWER-7-DETECT: Interface Gi1/0/13: Power Device detected: IEEE PD
1w1d: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/13: Power granted
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to up
1w1d: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/13: PD removed
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to down
1w1d: %ILPOWER-7-DETECT: Interface Gi1/0/13: Power Device detected: IEEE PD
1w1d: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/13: Power granted
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to up
1w1d: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/13: PD removed
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to down
1w1d: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/30: PD removed
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/30, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/30, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to down
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/23, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/23, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/23, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/23, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/23, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/23, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/23, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/23, changed state to up
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to down
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/19, changed state to down
1w1d: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/19: PD removed
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/19, changed state to down
1w1d: %ILPOWER-7-DETECT: Interface Gi1/0/19: Power Device detected: IEEE PD
1w1d: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/19: Power granted
1w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/19, changed state to up
1w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/19, changed state to up
1w2d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to down
1w2d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to down
1w2d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to up
1w2d: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to up

Richard Bradfield · ‎09-23-2015

Natalie,

do non POE devices work on the bad POE ports, I wonder if you have damaged pins on the switch

I see from the log you have not power cycled the switch can you try that, i take it you get nothing in the logs when you plug the phones into the bad ports

regards

Richard

Jason Dance · ‎09-23-2015

Could you please post the results from the following commands?:

Sh run int gi1/0/4

Sh run int gi1/0/5

Sh run int gi1/0/6

Sh run int gi1/0/13

Also, what make/model/firmware rev phone are you connecting to the switch?

How many of your 3750s are having the issue?

Have you tried a different IOS rev?

What is the exact model no of the not working 3750?