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Question

Sonos Sub4 and Era 100 surround Wifi connection lost

  • June 13, 2026
  • 4 replies
  • 59 views

Hi,

 

As I’m French, I already apologize if my english is not perfect.

My music system in my house is Sonos configured.

I have Sonos Era 100 et Sonos One speakers independant in some rooms and for home cinema, I have Sonos Arc Ultra + Sub4 + 2 Era 100 for surround.

 

As my wifi router was not working well, I built a simple TP Link Omada network based with a controller and 4 access point.

 

I desactivate my router wifi and wifi board and my Vlan is managed by Omada Controller only.

 

But I am facing a lot of connections issue with sub4 and 2 Era 100 surround speakers.

It is almays losing wifi connections … Only on this home cinema speakers.

All others still connected … Arc Ultra beam is 50cm from Sub4 so It is not a covering issue.

 

I can see them offline in Omada Management board … sometimes go back online … but more often offline.

 

I already factory reset devices and restore wifi connection but still losing after a while.

I also forced wifi connection to the same access point via Omada application in order to be on the same BSSID but still losing.

  

I think it is a configuration issue but need help to fix please.

Thx.

Nicolas.

4 replies

Airgetlam
  • June 13, 2026

Not familiar with the Omada system, but some points to consider:

Your Sub and surrounds are connecting (most frequently) to your Arc Ultra (or any Sonos soundbar in use). They’ll receive proxy IP addresses from your router, but connect to the Arc Ultra via a hidden 5Ghz connection. This means you should never turn off the poorly labeled radio/wifi on your soundbar, even if you have it wired to your router with a cable.

Sonos also doesn’t communicate across vlans, all Sonos devices need to be on the same one there. 

Don’t factory reset your devices. All you’re (effectively) doing is erasing log data that Sonos would use to help you. 

Internet devices should be at least a meter from each other. Too close, and the chances of electrical interference with the Ethernet signal goes up, substantially. 50 cm is likely too close. Try moving things a bit further away. 

I would suggest a call to Sonos Support to discuss it. If you can get past the Chatbot, it may be helpful. 

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

 

Translation:

Je ne connais pas le système Omada, mais quelques points à considérer :

Votre Sub et vos surrounds se connectent (le plus souvent) à votre Arc Ultra (ou à toute barre de son Sonos utilisée). Ils recevront des adresses IP proxy de votre routeur, mais se connecteront à l'Arc Ultra via une connexion 5Ghz cachée. Cela signifie que vous ne devez jamais éteindre la radio/wifi mal étiquetée sur votre barre de son, même si vous l'avez câblée à votre routeur avec un câble.

Sonos ne communique pas non plus entre les vlans, tous les appareils Sonos doivent être sur le même là-bas.

Ne réinitialisez pas vos appareils aux paramètres d'usine. Tout ce que vous faites (efficacement), c'est effacer les données du journal que Sonos utiliserait pour vous aider.

Les appareils Internet doivent être à au moins un mètre les uns des autres. Trop proche, et les risques d'interférences électriques avec le signal Ethernet augmentent considérablement. 50 cm est probablement trop proche. Essayez de déplacer les choses un peu plus loin.

Je suggère d'appeler le support Sonos pour en discuter. Si vous pouvez dépasser le Chatbot, cela peut être utile.

Lorsque vous parlez directement au personnel d'assistance, il dispose d'outils qui leur permettront de vous donner des conseils spécifiques à votre réseau et à votre système Sonos.


Stanley_4
  • Grand Maestro
  • June 13, 2026

The AI generated summary here has good information 

https://en.community.sonos.com/search?q=arp

Short summary

Reserve static DHCP addresses for all Sonos devices, check for SonosNet master/satellite behavior when devices “vanish” from ARP, and verify network settings (multicast, proxy ARP, client isolation, STP) on managed networks to restore reliable discovery and ARP visibility

 


  • Author
  • Contributor I
  • June 14, 2026

Hi and thx for messages.

 

I tried something.

Connect my arc ultra by ethernet.

No more connection lost since 35h …

Meaning my issue is vlan settings related.

 

I’m gonna dig in that direction .        😉


Forum|alt.badge.img+18
  • Local Superstar
  • June 15, 2026

The AI generated summary here has good information 

https://en.community.sonos.com/search?q=arp

Short summary

Reserve static DHCP addresses for all Sonos devices, check for SonosNet master/satellite behavior when devices “vanish” from ARP, and verify network settings (multicast, proxy ARP, client isolation, STP) on managed networks to restore reliable discovery and ARP visibility

 

That summary is typical AI slop, LLM mashing words together that make up some random sentences that are confusing and not relevant.