Power up B11 with Mikrotik PoE Switch (CRS328-24P-4S+)

Anyone have experience with the subject?

My Point to Point link has a B11 Factory PoE adapter on the far side (Station) and a Mikrotik PoE Switch on the near (Access Point) side. It appears my near side Access Point is going doing boot loops and I am wondering if it is the Mikrotik PoE switch not supplying the right power.

The Access Point stays up sometimes for up to 5hrs and sometimes it reboots three times within an hour.

Mikrotik PoE Switch: CRS328-24P-4S+

Some Sample Logs:
Aug 29 13:22:27 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:22:27 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:23:08 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:23:08 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:27:31 ABBH02a-1 Mimosa_B11 Wireless associated
Aug 29 13:27:31 mimosa Mimosa_B11 Wireless associated
Aug 29 13:29:32 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:29:32 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:29:53 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:29:53 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:29:53 mimosa Mimosa_B11 Wireless associated
Aug 29 13:29:53 ABBH02a-1 Mimosa_B11 Wireless associated
Aug 29 13:31:44 ABBH02a-1 Mimosa_B11 Startup reason: Power On Reset
Aug 29 13:31:44 ABBH02a-1 Mimosa_B11 Startup reason: Power On Reset
Aug 29 13:32:00 mimosa Mimosa_B11 Wireless associated
Aug 29 13:32:01 ABBH02a-1 Mimosa_B11 Wireless associated
Aug 29 13:34:19 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:34:19 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:35:08 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:35:08 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:35:50 ABBH02a-1 Mimosa_B11 Wireless associated
Aug 29 13:35:50 mimosa Mimosa_B11 Wireless associated
Aug 29 13:37:56 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:37:56 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:38:13 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:38:13 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:38:16 ABBH02a-1 Mimosa_B11 Wireless associated
Aug 29 13:38:19 ABBH02a-1 Mimosa_B11 Wireless disassociated
Aug 29 13:38:39 ABBH02a-1 Mimosa_B11 Wireless associated
Aug 29 13:38:42 ABBH02a-1 Mimosa_B11 Wireless disassociated
Aug 29 13:42:35 ABBH02a-1 Mimosa_B11 Wireless associated
Aug 29 13:44:56 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System
Aug 29 13:44:56 ABBH02a-1 Mimosa_B11 Startup reason: Non-Responsive System

Here is a visual of the uptime over the past two days:

What’s the power you are supplying?

As I recall, the Mikrotik can do either 24 or 48 passive or active, what settings are you using on the switch?

Are you powering anything else off of that switch?

Power being supplied to B11 Radio:
image

Switch is set to “Auto” I have also Tried “High” and not tried the last setting; “Low”.

I am powering two other radios and no other PoE devices.

PoE Radio #1: Mimosa B5 - This has had no reboots but I have powered it down because of an issue on the far side (Station) end of the link.

PoE Radio #2 Mikrotik Netmetal - Running without any power cycles at PoE 24v:
image

I should also add: Whenever I try to run a bandwidth test while the link is up, the device stalls then reboots.

I have a support file I can send over to the Support Team.

Seeing as the low voltage should be ~24 volts I would expect that to not power the radio.

Looks like the current voltage is too low. (26 volts) Which is probably why the radio turns on, but any time you put it under load it crashes.

I would change the PoE Voltage to “high” and the PoE Out to “forced-on” and see if that works for you.

@William5 just to clarify, It was on “High” as I stated in my post earlier. I have never ran the radio at 24v. Take a closer look at my screenshots above.

Blockquote Switch is set to “Auto” I have also Tried “High” and not tried the last setting; “Low”.

Good news! - I have switched to the factory Power Supply and the radio was able to run it’s first bandwidth (load) test. Every test prior would crash the radio.

I will continue to test and mark this as resolved if it stays stable for 24hrs. If it does, this means that the radios are not compatible with Mikrotik PoE switches; even though they can push 50volts+ and keep the radio up for extended period (i.e. they eventually, and randomly crash).

Sorry, I was looking at the Netmetal picture and didn’t realize it.

I guess the Switch just doesn’t provide enough amperage… I will have to lookup the specs on both the radio and the switch and see what shakes out…

What wattage/amps is the Mikrotik capable of putting out? We had a number of issues where a Mikrotik Hex POE at 48V could run B5cs just fine but were incapable of keeping a B11 running. It had to do with the power demands of the B11. Our symptoms were the same. The radio would boot, and run fine, but when a traffic load was put on the radio, it would reboot. We also believe this situation was aggravated by very cold weather. At any rate, we found that putting the B11s on a POE switch that could supply higher watts, we were able to stabilize the radios. (We put them all on Netonix switches). The B11 uses up to 30 watts, that rules out quite a few POE switches/Mikrotik routers especially when running more than one POE device from the switch/router. We ran into trouble because the Hex POE could power one radio, but if two were plugged in, we got the behavior you mention. From the specs it looks like the switch you are using can do 450 mA, I can’t do the amp/wattage conversion in my head, but I am guessing that is too low. The Mimosa POE does 930 mA, the Netonix does 750 mA or 1.5 A. My guess is your issue is not enough power out of the CRS. If you want have a Netonix around there, give that a try.