Hi @BoonerUK 

I don't have much experience about Sonos system. I want to confirm further information with you. 

The "surrounds and sub", they are connected to the Sonos Beam via wireless, but not through EAP wifi? 

Could you please share a topology/picture to help me understand the issue? 

I searched on our community and some people shared their experience. Hope they are helpful. You may check:

OMADA and Sonos - Best Practice 

Plex & Sonos, apple functions not working when using Omada software controller

BoonerUK wrote

Hi All,

 

I hope someone has come across this. I have just taken the plunge and moved my WiFi from a home "prosumer" unit to a full enterprise grade setup with TPLink Omada at the heart. I used to really suffer from the whole chain being quite weak and unable to support my 150+ devices satisfactorily. 1stly I am really impressed with the overall WiFi its seriously solid everywhere in my home with less access points than before and the ER8411 is really getting the most out of my symmetric 3Gpps fibre connection.

 

BUT, I have found a small problem, all my Sonos speakers have moved across and are fairly seamlessly working once I republished my OLD SSID's on the Omada kit. apart from the surrounds and sub connected to my Beam. The way this works is the Beam creates an Ad-hoc 5GHZ network and the satellites and the sub connect to that and their LAN connection is proxied back to the main network by the Beam....this is what isn't working. I seem to see one of the devices appear but then disappear shortly after. I have temporarily moved them to another Access point from my old deco system and its back working but I would really like to find out what is happenning with the Omada kit, I assume its blocking the extra mac addresses from the proxying and is there any way that anyone knows of overcoming it.