Unable to add my Amp to the network ...

I suspect you might have to outline your network topology to get the issue resolved by anyone here - is the TP-Link deco mesh operating in ‘router’ mode or ‘bridged AP’ mode - if it’s in ‘router mode’ did you bridge your original router, switching off it’s WiFi etc. (or switch it to modem mode)? In that instance, did you also remove the old WiFi SSID from your Sonos App network settings?

Where are your network switches now emanating from? 

Are any Sonos products wired (if using SonosNet?) and what Wireless/SonosNet channels are in use. Where are the Sonos products directly/indirectly wired to and how far away are they from your WiFi AP’s?

If the Amp works when it is connected (wired or wireless) to your current router, then I would personally suggest it’s a network related issue.

Added question:

All my Sonos components are on a wireless network.  When trying to reset the Amp, the Sonos app said that the Amp cannot be ethernet wired since my other components are on a wireless network. 

My understanding is that the Boosts creates a distinct wireless network for my Sonos items.  But I wonder if it is a good idea to connect the Boost or any other component to our home network when a wired connection to the internet network is near or possible or is the Sonos network more reliable if left alone not relying or partly connected to the internet network ?  

I am good and patient at trying but not a professional network geek.  I’ll try to answer your question one by one.

Like I said, now, the Sonos network is independent of our internet network.  Before the Boosts were wired to the network but when I realized that Sonos needed a dedicated network, I unplugged the Boosts.

If I get back to your comments, can you help me answer them one by one ?

As a quick test - you could just try this…

Wire one of your Sonos Boosts to whichever device is now your network router - whether that’s your main router (perhaps ISP provided?) or your new TP-Link Deco primary hub - it’s not clear to me at the moment which mode you’re using with the mesh hubs? So you need to resolve which device to connect it to. Set the Boost at least one metre away from the chosen router.

Wait about 10 minutes and then check your Sonos devices show WM:0 next to each device in the hardware list in the Sonos App ‘Settings/System/About My System’ … if any show WM:1 then just, for good measure, reboot them - albeit some devices do not use SonosNet (WM:0) these days.

Now try adding the Amp to your system using a mobile controller device that is connected to the ‘exact’ same routers WiFi access point. Let me know if that then works for you. If it does, then you may have a local network issue ‘perhaps’, but you can then go onto describe your network topology and we can see if there is ‘perhaps’ anything obviously incorrect with your current wired/wireless setup.

Hope that assists.

(My global home network is not simple has I thought it was.  There is so many ifs or possibilities to tamper with, not knowing exactly what I am doing is painful.  Thanks you for helping.)

FYI, my internet home network begins with my ISP’s router (IR) connected to the Deco Primary hub (DPH), itself connected to a TP-LINK Gigabit Ethernet switch (GES).  My first Boost (FB) is connected to the GES.

In my previous post, I said that the FB was not wired to the network.  That’s a recent change because I thought it didn’t need to be.  I am not really sure to understand how Sonos manages it’s own network (Canal 6).  It has always been wired to GES.  I wired it back because disconnecting it seemed to cause me problems.  

You asked to connect the FB to the DPH.  The DPH has only 2 ethernet ports.  The first is used to connect to my IR ans the second, connects to the GES.  Is connecting it to the GES the same has connecting it to the DPH ?   

FYI … My Sonos network has been working perfectly before I began making recent changes to bad ethernet connectors and cables and moving cables around.  

Does this answer your questions regarding the basic IR and the DPH setup … ‘router’ mode or ‘bridged AP’ mode ?

It’s absolutely fine to leave your FB connected to the GES, but you haven’t mentioned which mode you’re using for the DPH, but I will hazard a guess that it’s now your main router, particularly as it appears in the link between your IR and the GES. It would make sense for that chosen setup configuration, although personally speaking, I tend to prefer a mesh setup in bridged AP mode, but it’s certainly not important when using SonosNet.

Just for clarification, did you disable the WiFi adapters on your IR - if not, then I would recommend you do that, better still… if the IR allows, set it to ‘Bridge’ or ‘Modem’ mode, that’s if it’s not operating in that way already (you haven’t mentioned the detail there).

Anyhow having the FB cabled to the GES is perfect - just ensure that FB is at least one metre away from both your IR and DPH (or anything else nearby that’s using wireless).

Next step… I’m just wondering how many Deco Hubs there are in the setup (I see you mentioned the satellites are not wired back to GES), but do you know what WiFi channels are in use by them and are you able to fix the channel and channel-width for their WiFi bands? - are the Deco using a combined 5Ghz and 2.4Ghz band?

If you can establish the 2.4Ghz WiFi channel(s) in use by your Deco - make sure all the hubs are using either WiFi channel 1, 6 or 11 as they are non-overlapping and my recommendation is to set the 2.4Ghz band channel-width to 20Mhz only. Then go onto select the SonosNet channel in the Sonos App so it is not the same as any of the Deco hubs (if that’s possible). 

Also, (but only) if you are not using any of these Sonos products…

• Roam/Roam SL
• Move/Move 2
• Era100
• Era 300

…whilst you are in the Sonos App Network Settings, with all your ‘existing’ Sonos products connected to the App, remove your WiFi credentials from the Sonos App. Your Sonos devices (are) will be using the FB SonosNet signal, rather than your Deco WiFi in the current setup described - so you do not need the WiFi credentials stored in your speakers. But just to say again, only do this if you do not have any of the above listed devices.

Once you’ve checked/done the above - ensure that your mobile device is connected to the DPH WiFi and not your IR WiFi (which should be disabled) and see if the Amp will now setup/work for you.

Whatever you do (apart from the FB) do not wire any other Sonos products to the LAN and definitely do not cable a Sonos product to any of your Deco satellite hubs.

Before reading your last reply …  I wanted to share that I just called my ISP.  They confirmed that the IR is still a router and that it’s not a bridge.  They stated that it’s the best way to set things up since their router is required to have some other equipment they provide to us (wifi repeater to a controller for another tv set).

So, in short, I have 2 distinct routers, the IR and the DPH each one having their own network. The DPH basically controls everything and give us access to security and managing modes that the IR does not give us.

Would connecting the FB to the IR be better than to the GES ?

With your next reply, I will take time to read your last generous response.

Having two routers, one embedded inside the other, or linked of the other is often referred to as ‘Double NAT’ it’s not a huge issue, if carefully managed - they each have a different subnet, but firewalls can sometimes get in the way for updates and the such like… rather than data ‘passing through’ the first router when in bridge mode or modem mode. Controllers devices can sometimes also connect to the wrong subnet/network.

My question is do you ‘really’ need the IR WiFi enabled for your TV? - the fact you have a repeater might also be problematic - can’t you just switch off the repeater and have the TV use your Deco mesh WiFi instead? - I suspect it’s these things : IR WiFi and Repeater, that has been causing the problems you were seeing with the Amp.

Anything that connects to the IR, or repeater WiFi signal, will have problems communicating with your Sonos products on SonosNet, linked back to the DPH.

The purpose of a mesh system is to really help do away with WiFi repeaters/extenders etc. which in fact are listed as ‘unsupported’ by Sonos in their system requirements.