Cannot connect to my router

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Anton_NiceGuy wrote:

I am on xfinity. with a CM1000 modem and a Nighthawk AC3200 as a router.

I assume that the AC3200 is the R8000 listed in your footer. (AC3200 is not a reliable guide to model number. Many devices come with an AC tag, but it is essentially a label that Netgear, and other brands, attach to hardware to describe wifi speeds.)

The login IP for the CM1000  modem is http://192.168.100.1.

It sounds like you need to take you network through the recommended startup routine.

As this is a router, there is probably a modem sitting in front of it. You need to get the devices to forget any inherited settings. Among other things, that means rebooting the network.

Power cuts usually take out both the modem and the router on a network. When the power comes back on, they may start up in the wrong order, with the router starting before the modem is ready. That means that they get confused about which is in charge.

Be sure to restart your network in this sequence:

• Turn off and unplug modem.
• Turn off router and computers.
• Plug in and turn on modem. Wait 2 minutes for it to connect.
• Turn on the router and wait 2 minutes for it to connect.
• Turn on computers and rest of network.

It might help to start with the manual for the CM1000.

Visit the support pages:

Support | NETGEAR

Feed in your model number and check the documentation for your hardware.

Check the section in the manual Connect Your Cable Modem to a Router After Installation and Activation
.