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My Power over Ethernet (POE) Switch will not link with my POE Wireless Access Point.

Posted on 2007-07-19
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I have a FS108P Netgear POE switch and I am trying to use it to power a Q-Bridge Wireless device by Connex Wireless.  I have come to the point of having the Q-bridge Wireless device directly plugged into the POE ports on the switch using a straight through and then using a crossover.  I get no link even in these simpliest of set-ups.  Both devices claim to be 802.3af compliant.  However upon closer examination I see DTE added to the FS108P that suggested it is another standard from 2003 rather than 2005.  

I have also seen that 802.3af can work in either mode A or Mode B depending on if your want to use "spare" pins or "live" pins.  I was wondering if maybe one device only works on A and the other on B.

May biggest problem is that everything I have read goes something like this "If you Plug the 802.3af compliant device into the 802.3af compliant switch, birds will sing, children will laugh, and all will be right with the world."  My own experience is not so happy and joyful.

Any help is appreciated.
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Question by:midwestnets
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lrmoore earned 2000 total points
ID: 19530264
Ah, the wonderful thing about standards is that there are so many of them to choose from.
What is not standard is the mechanism of communication between the PoE device and the PoE switch. What protocol do they use to say "OK, I need power from you"? No telling. For example, try to plug in a Cisco IP Phone into a Netgear PoE switch. Never will you get power. Plug most any PoE device into a Cisco PoE switch and birds do sing, the children do laugh, and all is right.
Never had much luck with any Netgear product other than their little switches that are so tiny they are easy to carry around in laptop bag.
You might be able to make a CAT5 cable that is supposed to force power.
Check out the "conversion cable" listed near the bottom here (orange cable)
http://www.hyperlinktech.com/web/poe.php
Or try making one with the pinout shown here
http://www.voip-info.org/wiki/index.php?page=Cisco+POE
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by:midwestnets
ID: 19530732
Thanks so much for the pin-outs on a conversion cable.

A 4-7, 5-8 pin crossover.
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