5834 Views 5 Replies Latest reply: Jun 18, 2010 11:50 AM by Bob Timmons
Welcome to the discussions!
There are two ways to configure the AirPort Extreme and Motorola 2210 to work together. Try this method and see how things work:
Make sure that you have the ethernet port cable plugged into the WAN port of the AirPort Extreme (AEBS).
Open AirPort Utility - click Manual Setup
Click the Internet icon
Connect Using = Ethernet
Connection Sharing = Share a public IP address
Click Update to save settings and let the AirPort Extreme restart
If you see an error message about Double NAT, click ignore.
Power down your entire network
Start the modem first and let it run for a few moments
Then start the AEBS and let it run for a few moments
Then start your computers one at a time
Try that out and please report on your progress. We may need to make another adjustment to your modem.
So far so good, two laptops on wireless network remain connected, no pop up IP address windows. I wonder why this solution was not suggested by apple support when I was on phone with them last week. Are there any downsides to sharing a public IP address?
Thank you, thank you, thank you. If this is solved I am extremely (no pun intended) indebted to you. I have been working this problem for three days, at least 10 hours solid!
Happy to help.
I too am puzzled that both Apple and AT&T were apparently unaware that you had a modem, not a gateway.
If you had a gateway (which is a combination modem/router on one chassis with 3-4 ethernet ports), and you were configuring your AirPort Extreme to work with that device, then in that case, the correct setting would have been "bridge mode".
+Are there any downsides to sharing a public IP address?+
This is the correct setting for the AirPort Extreme when it is connected to a simple modem (one ethernet port). Since your modem only delivers one IP address, you must have the AirPort Extreme configured to "share that IP address" in order to have the device furnish separate IP addresses to each of your devices on the network.
With the AirPort Extreme in bridge mode, it was passing through the single IP address from the modem and only one device on your network was receiving that IP address. That's why you saw conflicts about another device using the same address.
Sounds like you are all set. This should work very well for you.