POE problem on a WS-X4548-GB-RJ45V line card in a 4510

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I have a recent problem in which the slot will not send out the initial voltage to each port. I have working phones with PCs attaching working at the moment but it seems as if they're dropping off one by one. I'm able to plug a PC into the port and it works just fine, so i know it's a PoE issue but i'm not sure what the cause is. In order to fix this i have been moving users to another slot on the chassis. This is quickly becoming a capacity issue since we're using CER as well. Has anyone else seen this type of issue on these line cards?


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Giuseppe Larosa Thu, 01/15/2009 - 09:57
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Hello Mike,

do you see any log messages for POE events in the switch ?

what you see in

sh power output ?

If I remember correctly we had to replace a linecard of this model two mounths ago on a C4506 for the same reason.

Hope to help



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