Hi,
Are you planning new version of powerbox / hex poe? I need at least gigabit uplink, but also other ports in gigabit would be great.
See page 18 http://mum.mikrotik.com/presentations/EU16/presentation_2884_1456407120.pdf hex poe (5 gigabit ports) planned for Q2.
What about a powerbox containing an RB260GSP? A simple PoE switch in an outdoor case for layer 2 networks.
Thanks for reply… I hope that powerbox will be next.
Can someone show me wiring diagram of pasive gigabit poe?
just found it…
http://forum.mikrotik.com/download/file.php?id=10417
Is it possible to make it simple without transformers? like use only 1 wire (like blue for positive, and brown for negativ - not a pair, just 1 wire)?
Nope… not for gigabit.
Gigabit uses all 4 ethernet wire pairs, so to carry DC power along with AC signal on wires 4,5 and 7,8 you need a phantom powering scheme to be able to inject DC at one end, and “extract” it at the other, which is what that whitepaper depicts for PoE af/at.
Phantom powering is something that has been done for ages to power active microphones.
However, why would you need transformers? To power PoE-in gigabit capable routerboards (most) nothing else than stock poe injector (RBGPOE) or PoE-out port at the other end, by the HEX PoE and a ethernet cable is needed, no need for transformers, they’re built in.
I know i can use mikrotik gpoe injector, but when you need telecom standard (ground and -48V) then you have a problem. Mikrotik gigabit poe has still grounded negative. I think, that electrically it should be ok to use just 1 wire. If you want to use the whole pair, then you need to input that voltage to the center of a transformer on each pair. It is logical that if you use the pair for pasive poe in gigabit, then gigatit wont be able to work (you will short out signal), but i think when I use only 1 wire it should work. I will test that.
Are you aware of http://routerboard.com/RBGPOE-CON-HP ?