I am powering the AP from a PoE+ switch and I've ensured that it can supply the maximum power to the AP via GE1 (apparently 33W).
I want to connect GE2 to a VDSL modem, but it will not come up when connected, nor will it come up when connected to a standard switch port.
It is NOT shut down in the AP config!
This must be something basic that I need to do but I can't find any suggestions on the web, or work out what it is.
Best answer by chris_slaterwalker
Curiously, DISabling LLDP PoE negotiation appears to be the solution. This may just be a quirk of the HP switch I'm using: YMMV as always.
So in order to get ge2 to come up, the switch config I used was this:
no lldp config 3 dot3TlvEnable poe_config
Ge2 now comes up under all circumstances, and the switch reports it's delivering 9.4W, which is still not much, but more than before. You may need to reboot the switch and AP after configuring the above.