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Recently upgraded to a new 802.11ac AirPort Extreme base station. Now I'm having NAT troubles with my Xbox 360 and connecting to Xbox Live.
An Xbox network check says I have "moderate NAT". The Xbox will log me into Xbox Live, but I can't connect to any marketplace to download demos or videos. Also games say I'm not connected to Xbox Live.
Anyone else have this problem or was able to fix it?
Can you please provide the make and model number of your modem?
I know it's an Arris. I think it's a DG860 (I can double check when I get home after work). It's whatever Time Warner uses for their "ultimate" service.
That Arris model is a gateway.....it is a modem/router combination....not a simple modem.
So, you have two routers on the network. The Arris is providing NAT service, so too is the AirPort Extreme...and you wind up with what is known as Double NAT.
Make sure that the AirPort Extreme is configured to operate in Bridge Mode, which will turn off the NAT service on the AirPort Extreme. Click the Update button to save the new setting if you make any changes.
Are there any downsides to using Bridge Mode? Will I still be able to use Back to My Mac or other Mac/Airport specific functions?
I do not use Back to My Mac, so cannot answer that question.
Otherwise, the Guest Network function of the AirPort will not work when it is configured to operate in Bridge Mode.
If you find that the AirPort is already configured in Bridge Mode....then the NAT issues are coming from some other device on the network, since NAT is turned off when the AirPort is in Bridge Mode.
Probably outside the focus of an Apple forum, but would it be possible to do the reverse — put the Arris in bridge mode and have the Airport Extreme handle NAT and everything?
I think I may have found a way to put the Arris into bridge mode here:
My experience is that it is very difficult to impossible to configure a modem/router to operate as a simple modem.
The AirPort does not run DD-WRT, so I doubt that the link above would help you. The ISP will also likely tell you that they do not support the device in that type of configuration. Might be a good idea to check with them first, before you make any changes.
Life would be tons easier if you used a simple modem with your Time Warner service. Then, the AirPort could be configured to work as the only router for the network.
Something like a Motorola SB6141 or Netgear CMD31T are approved for use with Time Warner's service.
I agree. A modem would be great.
But they only offer two: this Arris model with WiFi (I have the wifi radio turned off so not to interfere with the Airport Base Station) and a wifi-less model (which I'm sure also has a 4-port router built-in).
I'll consider purchasing the Netgear model.
Message was edited by: Navarro Parker -
Something like a Motorola SB6141 or Netgear CMD31T are approved for use with Time Warner's service.
I think you may have gotten the model number from above mixed up.
High Speed Cable Modem DOCSIS 3.0 (CMD31T) - Netgear
I use and highly recommend this modem.
Other Time Warner recommended modems are here:
https://www.timewarnercable.com/en/residential-home/support/topics/internet/buy- your-modem.html
I went to Best Buy and bought the Netgear CMD31T today. Brought it home, called Time Warner and registered the MAC address of the modem. Plugged it into the Airport Extreme and I was up and running -- with no Xbox Live problems!
Thanks for your help!
Good news! Thanks for reporting back.
New Airport Extreme & Xbox Live "Moderate NAT" ?
