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Beginner

PoE issue on 3750s

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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
VIP Expert

Re: PoE issue on 3750s

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

Beginner

Re: PoE issue on 3750s

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

Hall of Fame Community Legend

Re: PoE issue on 3750s

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

Re: PoE issue on 3750s

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

Hall of Fame Community Legend

Re: PoE issue on 3750s

try connecting another phone directly into the switch port?
Beginner

Re: PoE issue on 3750s

OK - I will try it. Thanks

Highlighted
Beginner

Re: PoE issue on 3750s

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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