How do I set up my Xfinity Gateway modem Wifi with my Airport using same IP address? I need step by step instructions.

I want to use Xfinity Gateway modem WIFI with my Apple Airport, using same IP address. Apple store says this will work. I need step by step instrucions on how to do this.

Thank you

iPad (3rd gen) Wi-Fi, OS X Mountain Lion (10.8.2)

Posted on Feb 10, 2013 1:14 PM

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4 replies

Feb 10, 2013 5:38 PM in response to Tesserax

I have had the AirPort for 5+ years. Have had a Comcast modem for even longer. My husband and I have iPads. We can only get wifi connection within a very short range of our AirPort. I noticed that Comcast/Xfinity was advertising their new Gateway modem with extended wireless wifi so I turned in my old modem to Comcast and picked up the new Gateway model. After going through several issues with Comcast I tried to install my new modem and was told by Comcast that I cannot use both the Gateway modem and my Airport for WIFI, it's one or the other. I went to the Apple store and asked the same question and was told that I can have both connected using the same IP address for both. I am not very computer savy and need some basic, one step at a time instructions on how to add the Xfinity modem to my existing AirPort network for extending my WIFI. I think I expained that correctly.

The Comcast cable is connected to my Modem and then there is another connection between the modem and the AirPort via USB cord.

Is there somewhere on the AirPort/TimeCapsule device that tells me the exact model of my AirPort?

Thank you for any advice you can give me.

Feb 18, 2013 4:03 PM in response to Susan Saav

I noticed that Comcast/Xfinity was advertising their new Gateway modem with extended wireless wifi so I turned in my old modem to Comcast and picked up the new Gateway model. After going through several issues with Comcast I tried to install my new modem and was told by Comcast that I cannot use both the Gateway modem and my Airport for WIFI, it's one or the other.

That is pratically true, but not completely so. It really depends on what your networking goals are and properly configuring both routers. So again, I need to understand what you want to do with both routers. For example, do you want to use the Extreme to extend the Gateway router or to provide a second wireless network?

Nov 22, 2013 8:16 PM in response to Susan Saav

Dear Susan et al:

I've seen lots of versions of your question. One answer seems to be that you can use the Comcast device to connect to the Internet and manage your indoor wireless network. You can still apparently use your Airport Express as a wireless "bridge", essentially just re-transmitting the Comcast network signal in a different part of the house. That would seem to address your identified weak signal problem.

I think this can be done by plugging your Express into an electric socket in another room, then using your computer's "Airport Utility" program to reconfgure your Express from being a router to being a "bridge" retransmitter.

I may be wrong, and you might need to run an ethernet cable from the Comcast device to your Express in another room. But you could try the above first.

Caveat:

My login name above is "davidrAppleSupport", but I don't work for Apple Support.

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How do I set up my Xfinity Gateway modem Wifi with my Airport using same IP address? I need step by step instructions.

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