I want to buy a single POE source and distribute it with cheap network hubs that do not have POE. Will this work?
3 Answers
No. POE will only be supplied to devices that are directly connected to the POE switch, and only by request.
The standard by which this works is described here: http://en.wikipedia.org/wiki/Power_over_Ethernet#Standard_implementation
That won't work -- PoE doesn't carry through additional switches/hubs -- the last switch before the device has to be the PoE switch. You can safely plug non-PoE devices (such as other switches) into PoE ports, though.
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Just to confirm, it is likely plugging a POE hub into a non-POE hub might destroy it? Apr 5, 2011 at 16:28
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I am not sure about that, but anyway, a non-POE switch is not capable of distributing power, so there is no reason in risking damage to your equipment.– SvenApr 5, 2011 at 16:34
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3No, plugging a non-POE hub into a POE hub will not destroy it. The POE protocol will only supply power to the devices that request it.– ErnieApr 5, 2011 at 16:41
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1FYI, we do this all the time - we have several switches in our office after the POE switch. No damage is done to them, and no POE gets through them.– ErnieApr 5, 2011 at 16:54