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Forum Discussion
Connection issues with CM1150V modem and AX6000 (RBK853) - both Netgear products
I tried replacing my existing Xfinity model with a Nighthawk CM1150v and Orbi AX6000 (RBK853) tonight. Modem worked fine, but I coule not get the Orbi to connect with the internet. The Orbi was fun...
Make sure nothing else is plugged into the cm1150v. The CM1150v has 4x ethernet ports but for xfinity only 1 port is usable (2 if you use wan port aggregation). The others are only useful if you have a business class line or pay xfinity for multiple IP addresses.
So try this.
power off both the cm1150v and the orbi. Unhook the coax from the cm1150v and disconnect any devices connected to both.
connect coax back to cm1150v. Power it on. give it several minutes (up to 5).
Then connect port 1 from cm1150v to wan port on router.
Power router on. give it several minutes again to full boot.
then check connection on the orbi.
Yes, first make sure your Comcast IP address and internet connection is working with your new modem (connect a laptop or PC directly to the modem by ethernet). Then you can migrate that internet connection to your Orbi and start using its wireless network.
Comcast IP addresses are finicky when you replace their modem with new equipment, as you are doing. It also doesn't like it when you change the device (MAC address) receiving the IP address, like you will do when you switch from the laptop->modem to Orbi->modem. Each time you can call 800-COMCAST and use the automated system to reset the modem or else go to https://customer.xfinity.com/#/services/internet and click the Restart Modem link (this works with their modem, don't know if it works the same if you use your own modem like the CM1150V).