Module stopped providing POE

[gscalia01]

Need Help...

I have been experiencing issue with POE on several of my switches where for what ever reason the module stopped providing POE to the ports.

I tested POE on five other ports on the module with a Cisco IP phone 7965 and no luck not providing POE. I even tried it with Aruba wireless POE device and I got the samething, no power. I have been expereincing the same issue with two more switches and the only was i was able to resolve the issue was to reset the module. The first time I hard reset the card and fixed the issue, the second time around I did a soft reset and it fixed the issue as well.

I was just wondering if any one has expereinced the same thing and if there is a fix for it.

Thanks, Any help would be greatly appreciated.

Jack.

We are using the following hardware 4507R+E Swtices running IOS ver 12.2(54)SG

sh module
Chassis Type : WS-C4507R+E

Power consumed by backplane : 40 Watts

Mod Ports Card Type                              Model              Serial No.
---+-----+--------------------------------------+------------------+-----------
1    48  10/100/1000BaseT Premium POE E Series  WS-X4648-RJ45V+E   JAE14340KT0
2    48  10/100/1000BaseT Premium POE E Series  WS-X4648-RJ45V+E   JAE14340KSZ
3     6  Sup 6L-E 10GE (X2), 1000BaseX (SFP)    WS-X45-SUP6L-E     JAE143501I4
4     6  Sup 6L-E 10GE (X2), 1000BaseX (SFP)    WS-X45-SUP6L-E     JAE143500QH
5    48  10/100/1000BaseT Premium POE E Series  WS-X4648-RJ45V+E   JAE14340TE3
6    48  10/100/1000BaseT Premium POE E Series  WS-X4648-RJ45V+E   JAE14360BJT

M MAC addresses                    Hw  Fw           Sw               Status
--+--------------------------------+---+------------+----------------+---------
1 f866.f284.bda0 to f866.f284.bdcf 2.0                               Ok      
2 f866.f2c8.1590 to f866.f2c8.15bf 2.0                               Ok      
3 f866.f27e.0040 to f866.f27e.0045 2.0 12.2(44r)SG5 12.2(54)SG       Ok      
4 f866.f27e.0046 to f866.f27e.004b 2.0 12.2(44r)SG5 12.2(54)SG       Ok      
5 f866.f2ee.c720 to f866.f2ee.c74f 2.0                               Ok      
6 d0d0.fdfa.f1e0 to d0d0.fdfa.f20f 2.0                               Ok      

Mod  Redundancy role     Operating mode      Redundancy status
----+-------------------+-------------------+----------------------------------
3   Active Supervisor   SSO                 Active                           
4   Standby Supervisor  SSO                 Standby hot                      

nyc-wfcacc41wst3a#

[Nadeem ahmed Ahmed]

Try with power inline static under interface and shut/no shut interface,  otherwise module is faulty.  you need to raise RMA

[gscalia01]

Thanks for repluying.

what is power inline static do?

[Nadeem ahmed Ahmed]

It define the power for the port instead of auto negotiating and rrquest for power grant.

[gscalia01]

The weird thing with this is when I do show power inline mod 6 command it shows as if there was a POE device connected to g6/48 which there is no device connected to it.

Gi6/48    auto   on         16.6       15.4       Ieee PD             0   
--------- ------ ---------- ---------- ---------- ------------------- -----

Totals:          1    on    16.6       15.4     

[Leo Laohoo]

I tested POE on five other ports on the module with a Cisco IP phone 7965 and no luck not providing POE. I even tried it with Aruba wireless POE device and I got the samething, no power.

Can I recommend something?  Can you kindly plug the 7965 DIRECTLY to the switch port?  If it lights up, then I have a fairly good idea where the problem is.  If it doesn't then I want to ask if you are willing to eliminate a Layer 1 issue.

Before we proceed, I would like to issue a DISCLAIMER.  The TDR process for a 4500 is taken from the pages of the 6500.  This means that the TDR result for the 4500 is NOT VERY ACCURATE.

Here's how it works:

1.  Command:  test cable tdr interface Gi 6/48;

2.  Wait for about 60 seconds;

3.  Command:  sh cable tdr interface Gi 6/48;

4.  Please post the output.

I know that it takes at least 60 seconds for the TDR of the 4500 to complete (while the cheaper and less powerful 2960/2960G/2960S, 3560G/3560E/3560X and 3750G/3750E/3750X takes only 5-7 seconds).

I await for your result.