this post was submitted on 15 Aug 2024
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Unifi AP behind an extra switch: 2.4Ghz network stops working after ~30 minutes (lemmy.nz)
submitted 3 months ago* (last edited 3 months ago) by [email protected] to c/selfhosted
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/edit: did a firmware upgrade of the AP and can't replicate it anymore. Thanks all for the input, much appreciated. In case it happens again I will use your tips.

I have a very weird issue. I've got a relatively simple network setup:

  • router connected to ONT (Fibre)
  • 10 port switch A connected to router, cables to various places in house
  • 4 port switch B connected to switch A, with TV & Xbox connected
  • Unify WiFi AP connected to switch A, both 2.4Ghz and 5Ghz networks

That works well. However, when I connect the WiFi AP to switch B I'm having issues. Initially it all works well, but after ~30 minutes the wifi stops working; I can no longer ping e.g. the router. It only happens to one of the WiFi networks (2.4Ghz or 5Ghz), not both. A reboot of the AP solves it again, but then it stops working after ~30 minutes.

Both switch A and B are 1Ghz switches, zero issues with other devices.

Any idea what I can try?

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[–] [email protected] 3 points 3 months ago* (last edited 3 months ago) (1 children)

Do you have a continuously running unifi controller or is it only running when you do the config? Does it do the same thing with the controller opposite to how it is now (ie if you aren't running it does it do it when you leave the controller on)?

Are you running the 2.4 and 5 as separate SSIDs or the same one?

Are you on the latest controller and firmware?

[–] [email protected] 2 points 3 months ago (1 children)

It's a standalone AP. No controller. Two different SSIDs.

I've had it running now for 2 hours and of course now it works. The only change since last time is that I've reset the AP and did a firmware upgrade. Perhaps that fixed it...

[–] [email protected] 1 points 3 months ago (1 children)

Which model is it? As far as I'm aware all the Unifi APs need the controller for config. It doesn't need to stay running unless you want a couple features for large deployments but you do need to run it to set things up initially. The Air Max / uisp lines are the ones with web based config.

[–] [email protected] 2 points 3 months ago (1 children)

AC Lite. It doesn't need controller, it's standalone. I configure it via the mobile app.

[–] [email protected] 1 points 3 months ago

Ah, ok. The Unifi stuff is a bit weird like that. I recommend installing the controller on a computer if you continue to have issues. You don't have to run it all the time, just use it for config and then turning it off is fine. It'll give you way more information and control over exactly how the AP is set up.