Can't Connect Boost to existing 10 Speaker System

I will try to reset wireless in the sonos app when I'm home and see if that helps. Thank you for the assistance everyone.

While you are messing about consider setting static/reserved IP addresses for your Sonos devices in your router's DHCP page, it can dodge several problems and is quick to do.

I have all of my speakers from 192.168.1.200-211, already set as static. Was able to somewhat fix the issue, haven't heard any skips yet. When I was looking at .201:1400/support/review it was still showing my router MAC as designated root, not the Boost. When I turned off the wireless on my router, speakers still worked but not when I unplugged the Boost. It also seems like going into the router and disabling 'airtime fairness' helped the speakers forget the router.

My main question at this point, I've heard from some people that you should only hardwire in one device but not all... Then I've also heard hardwire as many as you can... I would think that hardwired would be better but not sure here?

The STP root thing is beyond my skill level but others keep explaining it to me in hopes a light will dawn... So, I'm thinking the STP root isn't where data comes from, it is just where Sonos starts the accounting process that decides which route to send data by.

Since SonosNet is a mesh having more wired connections offers more low cost routes to move data over. More wired paths means less load on the WiFi paths and potentially shorter WiFi paths.

Again a bit beyond my skills but look up "group coordinator" the Sonos device that the data going to a group of speakers initially goes to for distribution to other group members and the discussion on making that a wired unit if possible to cut the WiFi data it is having to carry a lot less.

Here I have every Sonos unit near an Ethernet connection wired and am seeing excellent stability and audio quality.

I like to fiddle and it is interesting to change things up just to see what happens. I have a centrally located Boost, two switches away from my router, most of my WiFi speakers hook to it but if I wire a speaker closer to my garage the speaker out there swaps to it in preference to the Boost.

I say wire everything that is easy to wire. Look at your network matrix and if everything is happy call it good. If a couple more remote units aren't happy look at getting them a better link back to the rest of the mesh.

I have all of my speakers from 192.168.1.200-211, already set as static. Was able to somewhat fix the issue, haven't heard any skips yet. When I was looking at .201:1400/support/review it was still showing my router MAC as designated root, not the Boost. When I turned off the wireless on my router, speakers still worked but not when I unplugged the Boost. It also seems like going into the router and disabling 'airtime fairness' helped the speakers forget the router.The fact that the root bridge is the router is irrelevant. It's 'upstream' of the Boost, so the topology within the Sonos system is the same either way. Traffic takes the shortest path along the 'branches' of the spanning tree (*), it doesn't necessarily have to pass through the root. There's probably more info than desired here. Sonos uses a modified version of Classic STP.

(* The rule that traffic must always flow along the branches doesn't have to apply within Sonos groups. The audio data stream is able to 'short-circuit' the tree, jumping directly between wireless 'group coordinator' and peer nodes. The 'group coordinator' is the first room in the group list; and the left unit of a stereo pair.)

The 'Airtime Fairness' setting in the router has no bearing on a Sonos system operating in SonosNet mode. It can however affect systems in WiFi mode.

My main question at this point, I've heard from some people that you should only hardwire in one device but not all... Then I've also heard hardwire as many as you can... I would think that hardwired would be better but not sure here?

I already touched on that here. If you want more detail look at this reference post