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Google Nest Wifi – sudden weak connection on three nodes that used to work perfectly

StefanCaling
Community Member

4 weeks ago

Hi,

I have a Google Nest Wifi setup with 1 Hub and 6 additional routers (nodes). Three of them are connected via Ethernet and work perfectly. The other three are placed upstairs and used to work flawlessly — but one day, they suddenly started showing "Weak connection" in the Google Home app, despite no changes on my part.

Here's how things are set up:

  • Upstairs, I have one wired node in a central location. It works perfectly.

  • Around that node, in three separate rooms (on the same floor), I have placed three wireless nodes. Two are fairly close to the central one, and one is a bit further away. All three now show weak connection in the app.

  • Previously, all three had strong connections and everything worked fine.

  • Nothing was moved, and no major changes were made to the setup when the issue started.

I’ve tried placing the weak nodes higher up and closer to the central wired node, but it hasn’t improved the situation. The nodes are not behind TVs or other electronics. The wired nodes downstairs still work perfectly, and all cables are confirmed to be properly connected.

It almost feels like the mesh system suddenly started routing traffic differently or failing to maintain the link between nodes upstairs.

Can you please help me understand what could have caused this sudden change, and how I can fix it?

Thank you in advance!

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1 REPLY 1

EduardoN
Community Specialist
Community Specialist

3 weeks ago - last edited 3 weeks ago

Hi @StefanCaling, 

 

Thanks for reaching out to this community! I understand your concern with your Google Nest Wi-Fi system. While the three wired nodes are working fine, the three wireless ones on the second floor are suddenly showing a "Weak connection" message in the Google Home app, even though you haven't changed the configuration or physical locations of these nodes.

I appreciate you taking the time to reposition the weak nodes and confirm that all your wired connections are working correctly. No worries, I'm here to help!

I would like to provide you with some troubleshooting steps that might help you understand what is happening.
  • Please run a speed test directly from the modem using 2 websites. Some recommendations would be Speedtest and Fast.
  • Check for throttling and common download and upload activity
    • Check for throttling
      • Open the Google Home app.
      • Tap Wi-Fi > Devices.
      • The numbers below "Devices" represent the total internet (WAN) traffic to and from the Wifi point. Tap a specific device to get more information about the device. Once a device is selected, it'll display the Speed and Info tabs.
      • The "Speed" tab shows Real time usage, specifically how much data has been downloaded and uploaded from and to the internet.
      • The "Info" tab shows Device information such as:
        • Brand
        • IP address
        • MAC address
        • Type of connection
        • Type of device
    • Check for common upload and download activity
      • Open the Google Home app.
      • Tap Wi-Fi.
      • Go to the Device list.
      • At the top of the list, you can find the download and upload usage of the network.
        • If it's more than 20% of the total bandwidth, this is a likely cause of slow speeds.
 
  •  Change DNS and toggle Nest Wifi Cloud services.

    • Google Home app

    • To change and set a custom DNS:

      • Open the Google Home app.
      • Tap Wi-Fi and then Settings Settings and then Advanced Networking.
      • Tap DNS.
      • Select Custom, then enter 8.8.8.8 and 8.8.4.4.
        • These user DNS servers are the primary Google DNS servers that have been tested and confirmed to be quick and reliable nationwide.
        • If you have an IPv6 set, you need to specify a custom IPv6 DNS. Do you have IPv6 enabled? If it's not currently enabled, you shouldn't be required to enter an IPv6 DNS.
        • Google IPv6 DNS: 2001:4860:4860::8888 and 2001:4860:4860::8844
        • If you encounter issues after using the DNS addresses above, set the DNS to the ISP's DNS instead. This only uses the ISP's DNS and doesn’t try to add Google's DNS as well.
      • Tap Save.

Please feel free to share any additional details you think might be relevant.


Best regards,
Eduardo

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