WS-X4748-UPOE+E POE Issue

[Alhafiz Ahmad]

Hi Guys

I have 2 unit WS-X4748-UPOE+E currently in production. I had insert the both module into slot 4 and 5. Recently we are having some issue with this module WS-X4748-UPOE+E on slot 4. Currently we have IP Phone connected into this module WS-X4748-UPOE+E on slot 4 but when we unplug the cisco phone from this module WS-X4748-UPOE+E on slot 4 and plug in back the IP Phone will have NO POWER

Then i try to connect those IP Phone to the module WS-X4748-UPOE+E on slot 5 there are no problem. THe cisco phone can have power. I also had try to connect other port to the module WS-X4748-UPOE+E on slot 4 the result still same no power. Then i try to shut and no shut the port but the result still same no power

I had attach  show tech for you all refference. Thank you very much for your assistant

[Leo Laohoo]

This is beginning to sound like you've ran out of PoE budget for the entire chassis. 

Can you please post the output to the command "sh power inline m 4"?

[Alhafiz Ahmad]

Hi Leo

Can we consider the module slot 4 have problem? and need to replace with the new module?

[Leo Laohoo]

If you don't want to do any troubleshooting, sure you can replace the new module.  

[Alhafiz Ahmad]

Hi Leo

I already get capture the power inline module log. Its seem normal.

[Leo Laohoo]

Ok, based on the "my_4506_poe_shpwr.txt" there are two ports in Module 4 that could be the problem.    They are Gi 4/12 and Gi 4/18. 

If these are the phones you are talking about then a simple TDR test will determine where the problem is.  

1. Command:  test cable tdr interface Gi4/12; 
2. Wait for 61 seconds; 
3. Command:  sh cable tdr interface Gi4/12; and
4. Post the output to #3.