AP in station bridge losing connection very often

RouterOS Wireless Networking
1

Hey folks,

Couple of months ago I setup my wifi with 2 Audiences and 1 RB5009. Here is a topic with some questions from that time:
http://forum.mikrotik.com/t/capsmanv2-and-wireless-backhaul-with-2-audiences/174814/1

This is basically what it looks like today:
IMG_0051.jpeg
The only difference is that the backhaul internet is done using the 4x4 5GHz antennas, instead of the 2x2.

Since then, I’ve been facing a lot of issues with the Bedroom unit disconnecting. I’ve setup Uptime Kuma and a bot in Telegram to track it, and I’ve also setup a syslog to grab the logs. Matching both, I was able to see the Bedroom unit disconnects in two situations:

1. Radar detected by the Living Room unit
Even though I deselected the DFS channels, the Living Room unit still seem to use DFS channels, which are very prone to radar interference where I live.
Here is the notification from Uptime Kuma:
IMG_0048.jpeg
Here are related logs from that time:
IMG_0049.jpeg
Usually this one restores itself automatically, but sometimes I also need to disable the wifi interface in the Living Room unit and enable it again. Then the Bedroom connects automatically.

2. Random disconnection
Here is the notification from Uptime
IMG_0050.png
And the logs:
IMG_0046.jpeg
This scenario never restores itself automatically. I always need to disable the wifi interface in the Living Room unit and enable it again. Then the Bedroom connects automatically.

Even though I’m (supposedly) using non-DFS channels, I still need to wait 10 min for the DFS channel availability check. If I try to set “Skip DFS channels” to “all”, I get “no supported channels” in that wifi interface. I don’t know what I’m doing wrong here.

I’m close to put back my old Unifi APs and sell the MikroTik ones, but I’m hoping this forum can help me fixing it. :folded_hands:

Living Room backhaul config

/interface wifi
set [ find default-name=wifi3 ] channel="Non DFS" channel.reselect-interval=1h configuration.antenna-gain=30 .country=Spain .hide-ssid=yes .manager=local .mode=ap \
    .ssid=Backhaul_Wireless disabled=no mtu=1500 name=Backhaul security.authentication-types=wpa3-psk .connect-priority=0 .encryption=gcmp-256

/interface/wifi/channel print 
Flags: X - disabled 
 0   name="Non DFS" frequency=5580-5700 band=5ghz-ac width=20/40mhz

Bedroom backhaul config

 /interface/wifi/ print                                                                      
2 MBR Backhaul  station-bridge      Backhaul_Wireless        20/40mhz
2

What version of RouterOS do you use?

Can you try:

/interface/wifi/radio/reg-info country="Spain"

Why do you use channel.reselect-interval=1h? If you want something to be stable, shouldn’t that be stable and not variable?

3

Hey, thanks for replying!

I’m using 7.15rc3 on all devices. I was on stable build, but facing these issues, so decided to test development build to see if the issues are still there.

Here is the output:

/interface/wifi/radio/reg-info country="Spain" 
number: 1 
  ranges: 2402-2482/20
          5170-5250/23/indoor
          5250-5330/23/indoor/dfs
          5490-5710/30/dfs

I tried to change the channels to 5170-5250:

/interface/wifi/channel print 
Flags: X - disabled 
 0   name="Non DFS" frequency=5170-5250 band=5ghz-ac width=20/40mhz skip-dfs-channels=disabled

But then it shows that there are no supported channels :thinking:
IMG_0053.jpeg
Regarding the reselect interval, it’s just a leftover from previous attempts. I had it off, but was having the same issues, so decided to try with 1h reselect interval, which also didn’t help.

4

I can offer you $100 for both units, considering they are used, old, no WiFI 6, obsolete and one can find them on ebay quite cheap: https://www.ebay.co.uk/itm/126400295845

The price is dropping and this is your best chance.

5

Try to change country to United States and pick 5745, not range, just one…

6

All good now? Or do you still need a help?

7

Decided to sell those units and move back to UniFi.

So yes, all good now.