Cable modem and Airport Express DHCP conflict

[slobizman]

I have a new ATT DSL modem set up at my daughter's house. It's a simple Motorola DSL modem that is not wireless. Today I attempted to connect an Airport Express to it. Didn't exactly work out.

I had no problem getting the internet to it and keep the light green. But the problem is, even though I believe I tried about every way possible to set it up right, I kept getting the following error, AFTER the Airport Utility told me Congratulations that it was set up correctly:

"192.168.1.64 in use by 00:1f:06:e:6a, DHCP Server 192.168.1.254"

I tried this on a MacBook pro and a Macbook with the same result. I also tried a PC and it connected once, yet never connected after that.

So, there is some sort of conflict and I'm not savvy enough to figure it out. BTW, the ATT service is the $19.99 basic service, nothing special.

I really don't want to go into the modem and mess with the settings; what's the trick to get the Express configured right? And, I did bridge mode, regular mode, and everything else I can think of. ATT did not provide me with IP addresses I should know about.

I'd like to get this working, but I guess if not, I can replace my cable modem with the ATT Wireless Gateway and have it all in one package, but that's not a versatile as having the Express.

Thanks!

P.S. I saw this problem elsewhere on the net with no real resolution.

 

[ewilson6]

Are you using a cable modem or DSL? if its a DSL you have to set the router up Using PPPoE, cable is DHCP.

PPPoE settings requires a username, and password and you clone your MAC address.

Cable modem you set it up as DHCP and the settings are automatic.

Where I live AT&T is all DSL they do not offer Cable.

Hope this helps.

Run Network Diagnostics and post back or post screenshot of what network Diagnostics says.

--Eric

P.S. Did you run airport setup assistant?

 

[slobizman]

Oops, I meant DSL

So sorry about that! It's a DSL modem (I'll see if I can fix my post above)

Are you using a cable modem or DSL? if its a DSL you have to set the router up Using PPPoE, cable is DHCP.

PPPoE settings requires a username, and password and you clone your MAC address.

Cable modem you set it up as DHCP and the settings are automatic.

Where I live AT&T is all DSL they do not offer Cable.

Hope this helps.

Run Network Diagnostics and post back or post screenshot of what network Diagnostics says.

--Eric

P.S. Did you run airport setup assistant?

 

[Peace]

Set your Airport Express up to serve DHCP IP's to your Mac using the 10.0.1.0 IP range instead of 192.168.*

 

[slobizman]

Set your Airport Express up to serve DHCP IP's to your Mac using the 10.0.1.0 IP range instead of 192.168.*

Thanks for the details. I'm going to be going to my daughter's house tomorrow to try this. I'm a little confused on where the Airport Utility pages I do that. Could you be specific? I'm new to Mac's and it's all a bit confusing.

Thanks.

 

[Peace]

In your utilities>Airport Utility app your Airport Express should look something similar to this. Keep in mind the pic is of a Time Capsule but the Airport Express shows something about the same.

 

[slobizman]

Thank you so much for your time.

So, do I start by setting it in "bridge mode"?

 

[ewilson6]

No don't set it up as a wireless bridge unless you have 2 routers hooked up.

--Eric