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Community Member

3550 PWR Switch Power Controller does not report Power Good

I have a 3550-24-PWR Switch with a half dozen IP phones connected. This morning I had a report that several phones connected to this switch just keep rebooting. I connected to the switch and have found the following in the logs:

1w3d: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Fa0/21: Power given, but Power Controller does not report Power Good

A reboot of the switch brings all the phones back up. What exactly causes this error and does it indicate a hardware or software/bug issue?

4 REPLIES
Hall of Fame Super Gold

Re: 3550 PWR Switch Power Controller does not report Power Good

Hard to tell. Can you provide the IOS version of the switch and the type and model of the IP phones?

Community Member

Re: 3550 PWR Switch Power Controller does not report Power Good

12.1(12c)EA1 and the phones are primarily 7940's.

Purple

Re: 3550 PWR Switch Power Controller does not report Power Good

First thing I would do is to try to upgrade the code , that has to be about the oldest code I have ever seen on a 3550 . Think it is at like 12.2.44Se6 at this point . If it continues after that then it's probably a hardware issue or a component starting to go .

Hall of Fame Super Gold

Re: 3550 PWR Switch Power Controller does not report Power Good

Was anything done to the Call Manager immediately before this issue started appearing? Maybe phone firmware was upgraded? If something was indeed done to either one, I'd upgrade the switch IOS to something more recent.

The last of the EA series IOS, EA13 is very stable and you can jump to the next version up.

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