Wednesday, January 2, 2019

3850 PoE issue

I have a vendor trying to install some Door Access Panels that for whatever reason are not able to get power from my 3850 stack. Plugging them into an old 3750 has no issue. The vendor contacted the manufacturer of the door panels and it is a known issue with the 3850s. Their recommendation is to set the switch to " Capacitance Mode for PoE handshake". I am not quite sure what they are referring to and I cant find any information for this mode for any switch. I was hoping someone has maybe come across this or knows of it.

I have tried forcing the port power to its recommended max (PoE+ 27.4w), disabled LLDP and CDP as well as enabled power inline port 2x-mode with no luck.



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