Contributor I

[Solved] Sub disconnects from Arc frequently

Forum|Forum|2 years ago
July 29, 2024
25 replies
1000 views

Setup: Arc, Sub Gen 3, 2x One SL surrounds. All on wifi. Router about 25’ away from Arc. Sub about 2’ away from Arc. Surrounds about 12’ away from Arc. Router is configured with one SSID available in 2.4 or 5 ghz. Router system is Asus: one primary and two wifi-mesh nodes. Throughout my house, about 8 other Sonos speakers (mostly era 100).

Issue: Configuration was working fine until the new app release in May or so (don’t remember exactly when I updated). After that, the sub kept disappearing from the app and network and the surrounds would show up as connected, but then not operate (i.e., no sound comes through them).

Solution: Ran ethernet wire from router to Arc. Everything’s been working perfectly since.

Although I don’t believe this is a “good” solution, it certainly seems to have fixed the problem.

I believe Sonos needs to fix this more broadly though - part of the value proposition of Sonos (for me) is how well they work over wireless connections. I’m obviously not the only person who experienced this.

Note: This same issue was raised and addressed in another thread here - but it was closed for comments, so I couldn’t add anything other than a thumbs up.

This topic has been closed for further comments. You can use the search bar to find a similar topic, or create a new one by clicking Create Topic at the top of the page.

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craigski

Local Superstar

Just a hunch. I’m not familiar with Asus, but I read there is a recent Asus firmware update to resolve ARP poisoning google search:

https://www.google.com/search?q=site%3Aasus.com+firmware+arp+poisoning

In a Sonos HT config, the IP address of the Sub will be bridged through the MAC address of the soundbar, this could be detected as a false positive ARP poison. If possible check the Asus logs?

If you have a PC or similar, check the IP addresses of soundbar and Sub from about my system in the App. Then ping both addresses, and look at your arp table ‘arp -a’ you will see the Sub has the MAC address of the soundbar.

Based on the release notes and timing of the firmware for various Asus devices it could be coincidence. or related to the issues the 2 posters above are experiencing?

Corry P

Sonos Staff

Hi @craigski

Thanks! That may well be useful!

If you’re not familiar with Asus, I’m guessing you can’t supply a diagnostic from a Sonos system suffering from this ARP poisoning? If you can, it would be appreciated - just let me know when it’s done.

"Common sense is the collection of prejudices acquired by age eighteen." - Albert Einstein

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craigski

Local Superstar

Hi @craigski

Thanks! That may well be useful!

If you’re not familiar with Asus, I’m guessing you can’t supply a diagnostic from a Sonos system suffering from this ARP poisoning? If you can, it would be appreciated - just let me know when it’s done.

I don’t have Asus kit, I can supply a diagnostic, but it would be from a working system 😀

Someone with Asus kit should be able to oblige, if they are familiar with the Asus router management, and are able to pull logs from the Asus router even better.

My theory is possibly the Asus has blocked the Sub, as it sees 2 IPs with same MAC address, so I assume Sonos diagnostic would show its offline.

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Ian_S

Prodigy III

Unless I’m missing something, doesn’t plugging a cable into the soundbar then create Sonosnet, which any other Sonos devices (not the surrounds and sub) will switch to in preference to using the main WiFi? Now you might say if that works great, but if you’ve invested in whole house Mesh WiFi (often for Sonos) doesn’t using Sonosnet under the covers so to speak somewhat negate that investment?

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SoundAndFuryAuthor

Contributor I

Unless I’m missing something, doesn’t plugging a cable into the soundbar then create Sonosnet, which any other Sonos devices (not the surrounds and sub) will switch to in preference to using the main WiFi? Now you might say if that works great, but if you’ve invested in whole house Mesh WiFi (often for Sonos) doesn’t using Sonosnet under the covers so to speak somewhat negate that investment?

I totally agree. As I said in my original post above (that started this thread) - I do not think running a wire is a good solution, and doing so erodes the whole value proposition of Sonos. Had I known their equipment would not be compatible with mesh wifi, I’d have bought a different audio system for my entertainment.

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craigski

Local Superstar

Correct, you don’t need to run cables to get Sonos ‘wireless’ speakers working. There maybe a simple option to enable/disable on Asus. I recall @AjTrek1 has Asus Mesh, maybe they can comment?

S

SoundAndFuryAuthor

Contributor I

Correct, you don’t need to run cables to get Sonos ‘wireless’ speakers working. There maybe a simple option to enable/disable on Asus. I recall @AjTrek1 has Asus Mesh, maybe they can comment?

@craigski - I hope you are understanding the distinction between Sonos wireless speakers and the Arc-Sub-Surrounds. On my Asus mesh wifi system, all my other (ten or so) Sonos wireless speakers (mostly Era 100, some One SL) work _perfectly_. The issue is not Sonos wireless speakers as much as it is Arc-Sub-Surrounds.

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Ian_S

Prodigy III

I’m pretty sure your One SL’s (non-surround) will now be on SonosNet. If you go to

http://speakerip:1400/support/review

and click on one of the non-surround SL’s, and then click

/proc/ath_rincon/status

You’ll get an information box showing a MODE line which will say Sonosnet if that is indeed what it is using. Likewise I expect the soundbar.

The Era’s don’t use Sonosnet at all even if you buy the ethernet dongle.

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craigski

Local Superstar

Correct, you don’t need to run cables to get Sonos ‘wireless’ speakers working. There maybe a simple option to enable/disable on Asus. I recall @AjTrek1 has Asus Mesh, maybe they can comment?

@craigski - I hope you are understanding the distinction between Sonos wireless speakers and the Arc-Sub-Surrounds. On my Asus mesh wifi system, all my other (ten or so) Sonos wireless speakers (mostly Era 100, some One SL) work _perfectly_. The issue is not Sonos wireless speakers as much as it is Arc-Sub-Surrounds.

Yes I understand, which I why I am commenting. Your Arc and Sub will have a unique MAC address each, but when they are bonded, the Sub (and surrounds) will connect directly to the Arc, and appear on your Asus network with a singe Arc mac address, but multiple IP addresses.

Asus released some firmware for most of their routers, from what I can see, in April 2024, just before Sonos released their App,. to deal with arp poisoning. There maybe a false positive being detected by the Asus firmware, that is preventing your HT Sonos system from working. I maybe barking up wrong tree, but its worth investigating based on what I have seen in this thread.

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Ian_S

Prodigy III

Don’t ASUS routers allow you to downgrade their firmware? So that could be a simple way to eliminate the firmware as being responsible?

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