RB5009UPr+S+OUT + 2x U6 Pro + LHG LTE 18

Hardware MikroTik hardware general
1

Good day, I plan to order RB5009UPr+S+OUT, but I have an issue selecting final POE/PSU voltage. There is included 96W 48V2A and there are two MTP250, one is 26V while the other is 53V both 250W.

I've heard horror stories about equipment rebooting because of voltage/current incompatibility so here is the list of devices I will be connecting (router will be in the attic):

- 4G antenna: LHG LTE 18 (replacing current SXT LTE6)

- Two indoor ax APs (UniFi* U6 Pro @ 48V)

- One outdoor ax AP (NetMetal ax, optional)

* Haven't used any of their products, what is the best way to control these APs without dedicated device?

Everything sounds too good to be true, just like Viktor's showcase videos. Is RB5009 truly capable in driving all of this or did I miss something (should I be focusing on port current instead of total W)?

PS For the future reference, when ISP eventually installs FTTH, I plan to use XGS-PON SFP+ module and move the LTE modem itself to the NetMetal for redundant internet connection.

2

You need to use 48-57V Power supply for the lhg and u6,'s that are 802.3af/at, so active Poe and high voltage.

Lhg Is 8W, no problem.
Each U6 Is 13W, no problem.

Netmetal Ax Is max 25 W ( dangerously near the max limit of Ampere per Port ) BUT even at the bare 12 W It Is LOW voltage Poe, i.e. 24 V and passive.

So you cannot power this latter from the RB5009 at the same time as the first three.

The 96W should be more than enough:

15+8+13+13=49 W

about half of the available Power from the PSU.

3

You are right, NetMetalAX + r11e will be drawing 25W and thats an issue I can't fix with something like Ubiquiti INS-3AF-O-G, I will have to power it directly which is fine.

Cat6 23AWG runs are short in my case, 10-12m in each direction. I will try everything with the included PSU.

What about ModeA/ModeB and LLDP, how do I configure all of this (port to AlwaysOn, set and forget?)

4

A device 802.3af/at (the PD or powered device) Is (should be) Mode agnostic. The negotiation Is led by the PSE (Power Sourcing Equipment) that decides which Mode will be used (Mikrotik will use Mode B) and the PD must accept that .

5

I have a follow up question about power redundancy: I would like to power the whole network from the spare RJ45 when the power is out (I have 2 ports in my study, the second one was planned for UniFi CloudKey).

My best quess is to use 48V2A barel adapter and RBGPOE. I have EcoFlow Delta 3 Max/Plus that is fast enough to act as an UPS.

6

Which spare RJ45?

RBGPOE is a (purely passive) injector/splitter.

It is not clear at all (at tleast to me) how your network is setup, may be you can post a schematic?

7

I'm not proficient in diagram apps, sorry but I can't be bothered atm. I pulled two cat6 cables to my "office", for no reason. I can use one just to send POE power in case of an outage. Now the problem is that by sending "only" 48V, there will be unavoidable voltage drop across the whole network. If you still don't see it clearly, its fine. :+1:

PS I have EcoFlow in the office acting as an UPS for the desktop PC and other devices, including SXT LTE6 antenna working solo in the attic so when the power is out everything keeps running.

8

I just got my device, there is no 96W PSU included. There are 9 ways to power it, my ass.

Each PoE-out port can supply up to 25W of power. All the ports combined are limited to 130W, which should be enough for most setups. (Note that the included PSU is capable of 96W total, so for maximum output, a different PSU will be needed). You can specify maximum available power from your power sources manually, if necessary. If you’re using PoE-out to power other devices, you have to provide power via the 2-pin (5.08mm 1x2pin) connector to power those.

Which also means, if I use POE to power this thing while I wait for the propper PSU, it won't be able to power other devices. At this point I'm not sure should I even trust what the've listed on the website!