04-08-2008 06:55 AM - edited 03-03-2019 09:28 PM
I have a 48 port switch module, 4 switcports on this does not provide power to my IP phones. How would i determine if POE is the problem in my module?
04-08-2008 06:57 AM
To begin with, attach a phone known to work, directly to the suspect port using a patch cable.
04-08-2008 07:29 AM
There's no problem with the phones since when we attached it on a different switchport they aquired power on the switch.
04-08-2008 07:15 AM
What type of switch and IOS version?
There is a known bug in 3560/3750 switches with power being lost on phones. The fix w/o upgrading the IOS is to issue a 'shut'/'no shut' on the switchports.
HTH,
__
Edison.
04-08-2008 07:31 AM
it's a cat4500-ipbase9mz.122-31.SG.bin. Shut/no shut did not work.
04-08-2008 07:32 AM
No known bugs on that release regarding VoIP, it seems you are being affected by a hardware issue.
04-08-2008 03:02 PM
But is there a command to show that ff switchports are defective?
04-09-2008 12:41 PM
Not that I know of, sorry.
04-09-2008 05:40 PM
You can try "Show power inline module
Try this link
http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/31sg/configuration/guide/PoE.html#wp1070721
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