Nest not connecting to modem

[MU2228]

I have a Nest Wifi and a Netgear CM2000 cable modem with Comcast as ISP.  About once a month my "internet" goes out - that is what is reported in the  Wifi tab in Google Home app. If I disconnect the Nest from the modem and wire a laptop directly to the modem I can get to the internet, so the issue is not with the connection from the cable side. I can go back and forth on this: disconnect Nest (laptop gets Internet fine), re-connect the Nest (no internet for any device connected to Nest, no internet reported in Google Home app, pulsing yellow indicator on Nest). Note that I do need to reboot modem each time I change what it is connected to. The issue usually goes away after waiting several hours (during that time I also power cycle modem and Nest every once in a while). I have a fairly large number of devices on the network and 1 Mac, 2 Windows, and multiple iOS phones.  A Comcast technician did spend time physically at the modem today trying to debug this and he gave up blaming the Nest. Any advice would be very welcome.    

[olavrb]

Double NAT: Is the modem bridged? It should be.

• https://support.google.com/googlenest/answer/6277579?hl=en
• https://support.google.com/googlenest/answer/6240987?hl=en

Other than that, it's worth trying to factory reset all Nest Wifi pucks and set them up from scratch in the Google Home app. Use same network name (SSID) and password, devices will reconnect by themselves.

• https://support.google.com/googlenest/answer/6246619?hl=en
• https://support.google.com/googlenest/answer/9548301?hl=en

[MU2228]

Thanks olavrb.

Because the Netgear CM series (what I have) are modems only (they don't have a router), I don't think that bridge mode is relevant in my configuration (but maybe misunderstanding the suggestion). 

Factory reset of my entire Nest mesh does indeed work. That's what I did the first time this happened. I was hoping to find a less time-consuming solution.

 

[EdwardT]

Hi folks,

@olavrb, thanks for the help!

@MU2228, glad to know that everything is working fine now and thanks for sharing the steps that worked for you. Please let us know if you have any questions and we'd be happy to assist you.

Thanks,

Edward

[EdwardT]

Hi MU2228,

It's me again, I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do. 

Thanks,

Edward

[Jeff]

Hi, everyone.
Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.
Thanks.

[Jeff]

Hi, everyone.
As we haven't had any activity here recently I'm going to go ahead and close the thread. If you have more to add, feel free to start a new discussion.
Thanks