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RBR50 issues with xfinity
I am running an RBR50 2 node Orbi AC3000. I recently changed from Frontier to Xfinity. Installed 1 Gbps service with a XB7-T xfinity wireless router/modem. I am hardwired Ethernet cable to the xfini...
So, after a week away from home, I did a factory reset on the Orbi and rebuilt the network. I also did a restart on the Comcast XB7, which is a WiFi6 gateway (modem/router). When I did the factory reset, the Orbi also did a firmware update. After the firmware update the Orbi works with no issues and the Xfinity router is set with bridge (DISABLED) and wifi on. At this point I am pretty convinced that it was the firmware update that might have done the job. I should note that I did multiple tries with bridge enabled, wi-fi off, etc. none worked. And the Orbi would NOT recognize the Xfinity Internet with the XB7 gateway set to bridged enabled. Go figure! Thanks to all for the assistance, now working great.
After you have bridged the modem fully and it's rebooted, power OFF both Modem and RBR for 1 minute, then power ON the ISP modem and let it sync. Then power ON the RBR. It should connect here. If not, try a factory reset of the RBR using the back reset button for 15 seconds then release. Walk thru the setup wizard.
My stars, what a puzzle. I just hate it when things that should just "plug in" fail to work.
Is there a computer with an ethernet port available? The Orbi will function with no internet connection at all. There won't be internet, of course, but devices can connect to the Orbi WiFi and talk to each other. (One medical relief mission in Haiti uses an Orbi to connect their laptops and network servers. They have no internet connection at all.)
Plugging the computer directly into the Xfinity box should result in an internet connection for the computer. It should get the public IP address from the Xfinity and "be in business." If it does not, then the Xfinity is busted.
Once the Xfinity is known to be "good", I would connect the computer to the Orbi rather than the Xfinity and not connect the Orbi and modem. Power up the Orbi and open http://192.168.1.1 on the computer. User name "admin", password "password" (If you did a Factory Reset") or the password that has been set on the Orbi.) Everything should be working except internet. WiFi should be on. Go through the setup until it comes to "connect to internet" and see what happens.