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The Ninth
The Ninth
Collaborator I
February 18, 2024
Answered

Sonos Amp disappears

  • February 18, 2024
  • 14 replies
  • 1092 views

Hi,

I just setup a new system in our holiday home, with a Sonos Amp in the living room and two Sonos Ones in the bedroom.

Originally the Amp was connected via cable and the Ones via WiFi, but it seems that is making issues with our Unifi switch/access point. Initially I could not even add the Amp to the system, but after I switched it to WiFi that worked.

But now the Amp disappears from the network after 30-60 minutes of it coming online. So initially when I start the Amp I see it in the Sonos app, but at some point it disappears and is also not reachable anymore on network level (ping). I tried to switch it back to cable instead of WiFi but the problem is exactly the same.

Could that be again an issue with Unifi? Unifi recommends having all Sonos devices either wired or wireless, but in my case this issue also occurs with all devices being wireless.

Any ideas on how to debug/solve this?

Regards, Robert

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    Best answer by The Ninth

    It may really be related to Unifi again. I made some changes today in the morning, and at least so far the AMP did not disappear anymore.

    I followed the documentation on GitHub, which was linked by @Stanley_4. That documentation is for Unifi network application version 7, while I am already on 8. Some of the settings from version 7 seem to be not available anymore on version 8, and others already default to what is recommended.

    In the end, I changed only two settings, the first being for the Wireless network:

    Wireless Network -> Set configuration mode from Auto to Manual
    Wireless Network -> Multicast Enhancement - enabled

    And the second for the port of the switch that the AMP is connected to, in the Port Manager:

    Affected Switch Port -> Set configuration mode from Auto to Manual
    Affected Switch Port -> Spanning Tree Protocol - disabled

    My network setup is relatively straight forward, one USW 24 PoE switch, to which both the AMP and a single U6 LR access point are wired. The two Sonos ONEs connect wirelessly via the access point. For Internet access, the switch is connected to a UDM Pro router/firewall.

    I’ll monitor the situation for a few days, but for now I am positive that it is resolved. At least till this morning, it took usually not more than an hour for the AMP to disappear after a reboot.

    Interestingly, I already followed the same steps based on the same documentation when I had trouble adding the AMP to my system. Back then it did not help, for adding the AMP only switching it to wireless worked.

    14 replies

    Show previous replies
    The Ninth
    The NinthAuthor
    Collaborator I
    February 21, 2024

    Hi,

    How does the SONOS devices decide whether to use WiFi or SonosNet, now that I have my AMP wired?

    Regarding WiFi version, in my Unifi network application the 5 GHz band is shown as WiFi 6, but the 2.4 GHz band only at WiFi 4, for whatever reason. The two SONOS ONEs are shown as connected to the 2.4 GHz band. 
     

     

    buzz
    buzz
    Grand Maestro
    February 21, 2024

    Ubiquiti must use use the standard supported by the client. WiFi6 access points are backwards compatible with older units that cannot make sense out of WiFi6 advanced details. Full WiFi6 support requires a client hardware upgrade. WiFi6 reaches its full potential when all clients support WiFi6. Regardless, I find that WiFi6 access points are more capable than older assess points. Networks that are struggling, will often improve considerably if the access points are upgraded to WiFi6.

    In my opinion, if current performance is satisfactory, I think that waiting for WiFi7 to mature will be the most cost effective approach. This will require a few years. But don’t hesitate to install WiFi6 access points if you need a performance boost.

      The Ninth
      The NinthAuthor
      Collaborator I
      February 22, 2024

      Thanks - for now we are happy with our wireless performance anyway. But I will look into why our 2.4 GHz seems to be setup as WiFi4 in general. The info on the screenshot seems to apply to the access point in general, not individual devices. Or do all devices need to support WiFi6 for the access point to be able to use the newer version?

      Stanley_4
      Stanley_4
      Grand Maestro
      February 23, 2024

      I’d send you a picture of my client list but the Ubiquity MFA access system is hosed and nobody using it can access their own equipment, support or even the web forum to complain.

      I’m pretty sure I have multiple types of clients listed there but I can’t see them tonight.

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