You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Arzenal Author

Level 1

0 points

TWC Motorola SBG6580 and Airport Extreme

So Time Warner came out and installed a Motorola SBG6580 in my home (Docsis 3.0) to allow me to receive their Wideband Internet offering (50 down / 5 up) but i'm having huge problem with how it fits into my network.

I have an Airport Extreme and 2 Airport Expresses. Now the main problem is the Motorola Cable Modem is both a modem and a router. I want it to just act as a modem.

I called TWC and they told me to disable NAPT mode, which puts it into a state where it just acts as a modem. Great, that sounds good.

I went ahead and did that but when I rebooted the whole network it only allowed 1 computer to connect. None of my iPads or iPhones or Xbox could access the network anymore. (My Airport is on Firmware 7.6).

Why is only 1 computer able to access the new network? What am I missing?

Posted on Dec 11, 2011 6:41 AM

17 replies

Feb 23, 2013 2:29 AM in response to Arzenal

Need to revive this old thread - I'm in the same predicament - SBG6850, newish AirPort Extreme - and severely disappointed with the wireless capabilities (or lack thereof) on the modem. The link helps but really doesn't give step-by-step instructions. Do I just plug a cable from the modem into the Internet connection port on the AE? Do I have to do anything with using the modem as a bridge. I'm just not network savvy and while I love the 73Mbps that I'm getting, I want my 'old' wireless back!

Any detailed help would be appreciated.

Clinton

Feb 23, 2013 7:34 AM in response to clintonfrombirmingham

clintonfrombirmingham wrote:

Do I just plug a cable from the modem into the Internet connection port on the AE?

Yes.

Do I have to do anything with using the modem as a bridge.

I'm not sure what you mean by that, but you have to configure the modem to operate in bridge mode to avoid a "double NAT" condition.

TWC Motorola SBG6580 and Airport Extreme