Changed ISPs and need to have my mesh router set-up switched

[zleb4248]

Hi. Just dumped my ISP of 20 years over to fiber and need to know how to have the Google mesh base and endpoints switched over. Not much out there that is helpful. Appreciate the quick response. Thanks!

[olavrb · Accepted solution]

New ISP often requires you to factory reset all Nest Wifi units ( https://support.google.com/googlenest/answer/6246619?hl=en ) and set up the Nest Wifi network from scratch ( https://support.google.com/googlenest/answer/9548301?hl=en ).
• Reuse your existing wireless network name (SSID) and password so your client devices reconnect to the new network automagically.

This is due to how Nest Wifi is designed in regards to management; unlike most other home router systems, Nest Wifi can only be managed through Google servers, even if the Nest Wifi unit(s) fails to reach the internet. And if Nest Wifi can't reach the internet, you can't tell it to change its' WAN type. You can get lucky and have Nest Wifi just work when connecting it to the new ISP equipment, but that depends on what WAN type both your old and new ISP have.

If you have to set up Nest Wifi from scratch it's also a good idea to make sure the ISP equipment is put in bridge mode to avoid double NAT, _before_ setting up Nest Wifi from scratch again. Double NAT is known to cause random problems and performance degradation with Nest Wifi, so avoid that if possible.

• https://dongknows.com/double-nat-vs-single-nat
• https://support.google.com/googlenest/answer/6277579?hl=en

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If you still haven't got Nest Wifi online after reading above information, check whether your ISP provides WAN in a way Nest Wifi supports:
• https://support.google.com/googlenest/answer/6246630?hl=en

Also check if your ISP uses VLAN tags. Nest Wifi supports some few commonly used ones:
• https://support.google.com/googlenest/answer/9798157?hl=en

If your ISP uses none of thosea common VLAN tags, a workaround is to use a managed switch between your ISP equipment and the main/primary Nest Wifi unit to untag the WAN before it hits Nest Wifi. More on that:
• https://superuser.com/questions/1148268/how-to-ditch-centurylink-fiber-modem

Above workaround can be especially helpful if your ISP uses both WAN type "PPPoE" _and_ VLAN tags. That specific combination has caused trouble for Nest Wifi users earlier.

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More tips and tricks is best found by going back in time:

• https://www.google.com/search?q=%28site%3Agooglenestcommunity.com%2Ft5%2FNest-Wifi+OR+site%3Areddit....

[JensenFarm]

Nothing really to change other then would have to  replace old isp router/modem  with new isp modem. If you don't use a static ip then that should be the only change as the primary google wifi device will act as router- be sure new isp modem is set to bridge mode 

[Juni]

Hi folks,

Thanks for the help here, olavrb and JensenFarm.

Zleb4248, thanks for reaching out, and sorry for the delay. I hope you got the answer you were looking for. If you need help with your Google Home or Nest devices, please do not hesitate to reply.

Regards,

Juni