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C3750G-PS PoE not working...

misullivan
Level 1
Level 1

Hi Gurus,

 

I seem to have a bit of an issue with a WS-C3750G-24PS-S after a local shutdown for power maintenance the switch no longer powers up even a single IP phone or wireless APs attached to it.

 

diagnostics show no errors (with an 'all' test)

 

I've even tried reducing everything down to a single IP phone.

 

Power cycle and shut/no shut have no effect.

 

Logs result in this:

 

*Mar  1 00:03:11.772: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:03:31.779: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:03:46.216: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:04:06.223: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:04:20.668: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:04:40.675: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:04:55.112: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:05:15.119: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:05:29.547: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:05:49.554: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:06:03.991: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:06:23.998: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:06:38.427: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:06:58.433: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:07:12.870: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:07:28.515: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:07:42.935: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:08:02.942: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:08:17.379: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:08:37.386: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:08:51.823: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:09:11.830: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

*Mar  1 00:09:26.267: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

 

(same thing happens on all ports so now just leaving it in port 24)

 

On restart of the switch the phone begins to power up, but as the boot completes it gets shut off (for me this means it's confirming that 48v is available from the PSU).. 

 

I've tried it in static and auto mode with no difference.  The test IP phone is a Cisco 7961 (15.4w) and works fine plugged into other C3750 and C3650...  APs are MR24's also 15.4w when working, also not working in the target switch but working fine in others.

 

Cable checks result in 4 'Open's for the phone.

 

c3750-24ps#show diagnostic result switch 2

Current bootup diagnostic level: complete

Switch 2:   SerialNo : FOC1138Y2HC

  Overall Diagnostic Result for Switch 2 : PASS
  Diagnostic level at card bootup: minimal

  Test results: (. = Pass, F = Fail, U = Untested)

    1) TestPortAsicStackPortLoopback ---> .
    2) TestPortAsicLoopback ------------> .
    3) TestPortAsicCam -----------------> .
    4) TestPortAsicRingLoopback --------> .
    5) TestMicRingLoopback -------------> .
    6) TestPortAsicMem -----------------> .

c3750-24ps#show power inline 

Module   Available     Used     Remaining
          (Watts)     (Watts)    (Watts) 
------   ---------   --------   ---------
2           370.0       15.4       354.6
Interface Admin  Oper       Power   Device              Class Max
                            (Watts)                            
--------- ------ ---------- ------- ------------------- ----- ----
Gi2/0/1   off    off        0.0     n/a                 n/a   15.4 
Gi2/0/2   off    off        0.0     n/a                 n/a   15.4 
Gi2/0/3   off    off        0.0     n/a                 n/a   15.4 
Gi2/0/4   off    off        0.0     n/a                 n/a   15.4 
Gi2/0/5   off    off        0.0     n/a                 n/a   15.4 
Gi2/0/6   off    off        0.0     n/a                 n/a   15.4 
Gi2/0/7   off    off        0.0     n/a                 n/a   15.4 
Gi2/0/8   off    off        0.0     n/a                 n/a   15.4 
Gi2/0/9   off    off        0.0     n/a                 n/a   15.4 
Gi2/0/10  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/11  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/12  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/13  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/14  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/15  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/16  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/17  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/18  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/19  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/20  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/21  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/22  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/23  off    off        0.0     n/a                 n/a   15.4 
Gi2/0/24  static off        15.4    n/a                 n/a   15.4 
c3750-24ps#sh env power all
 SW  PID                 Serial#     Status           Sys Pwr  PoE Pwr  Watts
---  ------------------  ----------  ---------------  -------  -------  -----
 2  Built-in                                         Good
Stored system POST messages:

Switch 2
---------

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 interface Loopback Tests : Begin
POST: CPU MIC 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

Interestingly after a couple of days testing this, just ran another cable test and got different results...

 

c3750-24ps#show cable-diagnostics tdr interface Gi2/0/24
TDR test last run on: March 01 01:20:33

Interface Speed Local pair Pair length        Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi2/0/24  auto  Pair A     3    +/- 4  meters N/A         Open                
                Pair B     151  +/- 4  meters N/A         Normal              
                Pair C     151  +/- 4  meters N/A         Normal              
                Pair D     93   +/- 4  meters N/A         Fail                
c3750-24ps#

This is the same phone that was just plugged into the switch next to it on the same cable and it works in the 3650G... (didn't touch anything except move the cable from port24 of the 3650 to port24 of the 3750)

 

Reload and test again (not touched it physically)

 

Interface Speed Local pair Pair length        Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi2/0/24  auto  Pair A     2    +/- 4  meters N/A         Open                
                Pair B     149  +/- 4  meters N/A         Normal              
                Pair C     101  +/- 4  meters N/A         Fail                
                Pair D     51   +/- 4  meters N/A         Fail                

 

and a few minutes later:

 

c3750-24ps#show cable-diagnostics tdr interface Gi2/0/24
TDR test last run on: March 01 01:15:44

Interface Speed Local pair Pair length        Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi2/0/24  auto  Pair A     3    +/- 4  meters N/A         Open                
                Pair B     151  +/- 4  meters N/A         Normal              
                Pair C     89   +/- 4  meters N/A         Fail                
                Pair D     150  +/- 4  meters N/A         Normal              

(and yes, have tried multiple cables previously)

 

Anyhow:

 

cisco WS-C3750G-24PS (PowerPC405) processor (revision F0) with 131072K bytes of memory.
Processor board ID FOC1138Y2HC
Last reset from power-on
3 Virtual Ethernet interfaces
28 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address       : 00:1D:E6:60:8A:00
Motherboard assembly number     : 73-10217-07
Power supply part number        : 341-0108-03
Motherboard serial number       : FOC11380F1T
Power supply serial number      : DCA1135A2VD
Model revision number           : F0
Motherboard revision number     : B0
Model number                    : WS-C3750G-24PS-S
System serial number            : FOC1138Y2HC
Top Assembly Part Number        : 800-26855-01
Top Assembly Revision Number    : C0
Version ID                      : V05
CLEI Code Number                : CNMWR00ARC
Hardware Board Revision Number  : 0x09


Switch Ports Model              SW Version            SW Image                 
------ ----- -----              ----------            ----------               
*    2 28    WS-C3750G-24PS     12.2(58)SE2           C3750-IPBASEK9-M         


Configuration register is 0xF

Thoughts/pointers welcome... the switch works fine except for this PoE issue.

 

Regards,

 

Michelle

4 Replies 4

Leo Laohoo
Hall of Fame
Hall of Fame
First off, I'm not troubleshooting anything running on 12.2(58)SE.
Next (after the firmware has been upgraded to something more stable), plug the phone directly to the switch port and re-run the TDR again.

What version would you suggest?  I had problems getting firmware on these in the first place...

 

Michelle

Ok, this is a 3750G.
Find the latest versions of either 12.2(55)SE or 15.0(2)SE train. Both of these train are very, very stable releases.

pkumari4
Cisco Employee
Cisco Employee

Hello Michelle,

 

The switch is running on very old firmware and from the above logs, I can see that the PD device is getting detected however switch is having issues with ports receiving bad power. 

 

Mar  1 00:04:40.675: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power is given, but Power Controller does not report Power Good

*Mar  1 00:04:55.112: %ILPOWER-7-DETECT: Interface Gi2/0/24: Power Device detected: Cisco PD

*Mar  1 00:05:15.119: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi2/0/24: Power given, but Power Controller does not report Power Good

 

Action Plan:

 

>>Please perform the upgrade to the latest version in your MW

>>Meanwhile try to go into the switch config mode and choose any interface then execute the below command.

 

switch (config)# power inline never

switch(config)#power inline auto

 

Regards,

Priyanka

 
 
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