PowerBox question

Hardware MikroTik hardware general
1

I am trying to configure a Powerbox RB750Pr2 using the POE in port to power it, and also to carry internet into a house. I was also trying to use a Ubiquiti M2-400 as a station, and a Mikrotik SXTG-2HnD as an AP. If I connect the M2 it works fine, but as soon as I connect the SXT, I loose the connection to the M2.

Does anyone have an idea what would cause this?

And to make it even crazier, if I use a Mikrotik Radio instead of an M2, then it works fine after connecting more radios to the powerbox. This is what I am doing, but I would like to know why using an M2 causes problems.

2

Well it turned out to be even stranger than I knew. Here is the setup.

100 ft of Cat6 from the power supply to the Powerbox. Connected to the powerbox is an LHG 2 XL and an SXTG-2HnD. Attached to the POE injector 100 ft away from the powerbox is a google nest router. As far as I can tell, this setup should work. And plugging in everything except the SXT everything works as advertised. And it works well. But as soon as I plug in the SXT, the LHG and SXT shart cycling. I get into the powerbox, and it shows that both radios are shorted. If I turn the POE setting for the SXT off, the LHG works fine, and the other way around as well. Now here is where it gets strange. I have a 22400 mah battery I use to power a MaP for aiming CPE’s and other things. I connected this battery, just the battery, to the powerbox and everything works great.

Is there some sort of restrictions on the POE in that I am missing?

3

Try on RB750Pr2 set:

/interface ethernet poe settings set ether1-poe-in-long-cable=yes
4

Thank you Łukasz! That did the trick! Do you know if there is a list of the command line only options?

5

Today I ordered a Bullet AC. I have a PowerBox with 2 Basebox and 1 LtAP connected. I will try it.

Regards.

6

Your welcome. Try use “?” in console line. You can use “?” in each branch of command. For example: “/interface ethernet” and then “?”.

7

Today I connected my Bullet AC to my PowerBox, and all works perfect.

Regards.

8

My problem may have been related to the long line POE in. Because sitting in my living room and using 10ft cables it all worked. I am going to be doing a few more of these remote Power supplies, I am sure I will find out with one of them. If I do I will post it.

9

Anyway use good quality cables with PoE is very very important.

100% cooper and recognized brand like Leviton/Brand-Rex, Panduit, AMP, etc.

In my case I use Leviton Cat. 6A shielded cable.

Regards.

10

I used True Cable Cat6 shielded buriable outdoor cable. Once I made the change that Łukasz recommended, all was well in the world (or at least at that one customers house).