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PoE issue on 3750s

Andyz
Level 1
Level 1

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 I have read about PoE issue and suggestions on 3750 SW. I do not have option to reboot and it has 15.0 ver. I assume this is the most updated version available by Cisco. I am seeing ports kicking out PoE devices. Any suggestion/recommendations??? I did plug into other available ports but no luck getting device worked. Any feed back related to this topic will help...Thanks!

 

7 Replies 7

Reza Sharifi
Hall of Fame
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What is the exact IOS version you are using?

Also, is this an issue with Cisco POE devices connecting to the switch or 3rd party vendors?

HTH

Current Ver. - Not supporting existing Cisco IP phones, they worked fine for an over a year but lately phone dies down.

Switch Ports Model              SW Version            SW Image
------ ----- -----              ----------            ----------
*    1 54    WS-C3750X-48P      15.0(2)SE5            C3750E-UNIVERSALK9-M
     2 54    WS-C3750X-48P      15.0(2)SE5            C3750E-UNIVERSALK9-M
     3 54    WS-C3750X-48P      15.0(2)SE5            C3750E-UNIVERSALK9-M
     4 54    WS-C3750X-48P      15.0(2)SE5            C3750E-UNIVERSALK9-M
     5 54    WS-C3750X-48P      15.0(2)SE5            C3750E-UNIVERSALK9-M

What do you mean by "phone dies down"?
Can you try to connect the phone directly to the switch port?

Yes - tried connecting phone directly to the switch port, NO power.

try connecting another phone directly into the switch port?

OK - I will try it. Thanks

Hi Andy,

 

Please check the available power if you have enough power available and IP PHone is not working, you hit the bug and  I would advise you to upgrade to stable release 12.2(55)SE12 or later (58). 

 

show power inline

Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
1 420.0 187.9 232.1
2 420.0 364.3 55.7
Interface Admin Oper Power Device Class Max
(Watts)

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