AIRPORT ATT DSL SETTINGS??????

HI,

Try deleting this file. com.apple.airport.airportutility.plist

/Users/YourName/Library/Preferences. Drag that file from the Preferences folder to the Trash, empty the Trash and restart your Mac. See if that helps.

If that doesn't help, try restarting Airport. Do you have the Airport Express or Airport BaseStation?

Airport Trouble Shooting Guide






Carolyn 🙂

1 Disconnect the Airport and connect the Mac directly to the modem

2 Log into the modem's HTML control page.

3 Set the modem, not the Airport, to bridge mode.

4 Connect the modem to the Airport and the Airport to the Mac.

5 Log into the Airport using Airport Utility.

6 Select 'Manual Setup' on the Airport Utility splash screen.

7 You should now see the Airport Utility summary screen. This should list:

the name of the Airport
the Airport's status
the version number of the Airport firmware (should be 7.4.1)
the Airport's serial number
the Airport's wireless and Ethernet MAC addresses
the wireless mode
the wireless SSID
the wireless security mode
which channel you're broadcasting on
how many people are connected wirelessly
the method in use to connect to the Internet
the IP address that AT&T has given your modem

If you don't see the above, there may be a problem. You may not see anything listed for the AT&T IP address. This will be because the router is not properly configured. You will now attempt to configure it. You may not see anything in the wireless sections. This would be because the wireless sections are not properly configured. You will also attempt to configure them.

You should click the 'Base Station' tab. This will allow you to set/reset the Airport's name, access password, and the system time. Do not check 'Allow setup over WAN'. Allowing setup over the WAN will allow anyone who knows or guesses your Internet IP and your router name and password to change the settings on your router remotely from anywhere on the Internet, once you have an Internet connection.

You should click the 'Wireless' tab. If you want to set up a wireless network, select 'create wireless network'. Set the network SSID, the name which you have assigned the network. Set the connection mode. (The default is 802.11n(802.11g/b compatible). Unless you have a very good reason, leave it there.) You can set the channel. (The default is 'Automatic'. Unless you have a very good reason, leave it there.) You can set the wireless security. (I'd use one of the WPA settings, but that's me.) You can then enter a security password. I'd leave the Wireless Options alone.

You can click the 'Access' tab, but there's really nothing you can do there unless you want to play with MAC addresses. You don't, so I'd stay away.

You should go to the 'Internet' button on the main toolbar. This defaults to the 'Internet Connection' tab. You have AT&T, so you're using PPPoE. Select it. Enter your AT&T username and password.

You should click on the 'PPPoE' tab. Select 'Always On' for your connection. Enter AT&T's DNS servers, 68.94.156.1 and 68.94.157.1. (You can use different DNS servers if you want; OpenDNS's servers are faster than AT&T's, for example. They would be 208.67.220.220 and 208.67.222.222.) You can enter the domain name (www.att.net) if you want. I leave it blank.

You can click on the 'DHCP' tab. This will allow you to set/reset your internal network. I'd leave this alone if I were you. Apple usually sets their systems to use the Class A private network, 10.x.x.y where 'x' is a number between 0 and 255 and 'y' is a number between 1 and 254. I set mine to use a Class C private network, as the address space of a Class A is 16,777,214 IPs while that of a Class C is 254 IPs, and I have 15 nodes on my home network and don't need to be able to access 16.8 million IPs, thanks, kindly. 254 is vast overkill, but that's a low as it will go unless I start playing with CIDR and that's too much like work.

You can click on the 'NAT' tab. Make sure that the 'Enable NAT Port Mapping Protocol' checkbox is selected. If this is not selected you will have a problem.

That's it. You will be asked to restart the router. It should restart, and it should go green this time, and you should have a valid Internet IP.

no problem.

Thank you Charles for posting such helpful info, I tried to use it to get my at&t dsl working but cannot. I wonder if you or others in the forum have any other suggestions to offer.

I moved recently and previously had service with a reseller ISP, iquest.net. I had all 4 of the family computers set up sharing the wireless network happily, and printing to the shared printer, and as I recall it took only an afternoon to get set up. The setup with AT&T is so much more painful.

I signed up for AT&T internet service at the new house and cannot get it to play nicely with my airport. Also, they installed it a day later than they committed to so I'm not sure I'll be staying with AT&T service for the long run. I am able to connect my macbook to the dsl modem directly and get online that way. (That's how I'm posting now.) I have also been able to connect to my airport and view other computer and their files on my network.

I was able to finally get it configured so that I could connect the airport to the dsl modem and my macbook to the wireless network and thereby to the internet, but none of the other computers on the network can access the internet.

I tried following the instructions provided for mcforman but after doing that I couldn't even connect the single macbook to the internet, so I backed out the changes.

I assume that the macbook is hogging the AT&T assigned IP address, but I'm not sure how to resolve that. FYI I'm using a speedstream 4100 dsl modem, and I just updated the firmware too.

My old ISP was so much more helpful, and we had all out computers set up and running within an hour of getting service at the old house. AT&T has a macintosh support center but they say they have no info about airports. I'm very frustrated.

AT&T likes to use Motorola modems which don't like routers unless placed in bridge mode. You must place them in bridge mode for the router to work properly. AT&T's tech support can assist you on this. Once the modem is in bridge mode, you must supply the PPPoE info to the router and you must set the router to NAT and DHCP.

Thank you Charles.

I finally admitted defeat and called Apple support, they had me straightened out in about 10 minutes. The tech I spoke to at Apple said that AT&T is sometimes giving incorrect configuration info, which seemed to be the case for me. Once I got the MacBook online wirelessly, I renewed the DHCP lease then did the same for the other machines in the network. They came right up then without a problem. I never had to put the speedstream into bridge mode, just an fyi for you. I do appreciate your instructions and help, thanks!

Ah. You probably don't have the Motorola modem, then. If you do have one, it will seem to work okay, but then will display a red LED and drop the signal if you don't put it into bridge mode. Non-Motorola modems don't seem to have this problem. I don't know why AT&T, at least in my area, likes the Motorola modems so much. I'm on my third one in under two years. I may yet go back to Comcast.

i'm having similar issues getting by Time Capsule setup with AT&T DSL using their Siemens 4100 DSL modem. an AT&T tech support person did tell me that this modem will not work with a "router", although i received highly creditable instructions for setting up the modem and base station today. unfortunately, those instructions didn't work.

i believe i understand the base station setup and AirPort on my computer, but i'm not sure about the modem configuration. there are several options on the modem's Connection Configuration page and PPP Location page that might play a part.

on the Connection Config page…

• Connection Type—choices are "Always attempt to connect", "Connect on demand", "Smart keep alive"…:-) seriously. it was suggested i use "Always attempt to connect".

• Let LAN device share Internet address—choices are "No, use private IP address", "Yes, use public IP address". i'm using the later (the default). this is very obscure stuff and the wording is impenetrable.

on the PPP Location page there are three choices:
• PPP is on the modem (default)
• PPP is on the computer
• Bridge Mode (PPPoE is not used)

it was suggested that i use "PPP is on the computer".

appreciate any advise.

.. apologies for the simple question, but I just couldn't remember .. how do I access the modem's HTML control page? ..

You need to connect directly to the modem and type in the IP address given you as the access page, usually 192.168.1.1 or something like that. You may be asked for the admin username and password; for many modems, the username is 'admin' or 'administrator' and the password is blank. In some modems, it's the other way around: the username is blank and the password is 'admin' or 'administrator'. The Read Me which came with the modem should say what the access page IP is and what the username and password is. If you don't have access to the Read Me, the modem vendor should have the Read Me available on their site. You'll need Internet access from someone else to get to it, though.

Thanks, Charles. I knew I had done that before when checking some settings, but just couldn't remember. Hopefully, I won't have to 'remember' again. Just so you know, I ended up stumbling across this article 'AirPort troubleshooting guide' here http://support.apple.com/kb/HT1401 which had two suggestions I tried. (I have a 'AirPort Base Station (Dual Ethernet)') One, 'be sure that the WAN Ethernet port is connected to your Internet connection -- your uplink, such as a cable or DSL modem, Ethernet pod, or router.' Two, 'If you haven't used the AirPort Setup Assistant or AirPort Utility, or if you've made configuration changes after using it, it may help to use it now.' I actually selected 'Assist Me' in Network Preferences, then 'Assistant' on the next screen. Moments later, all was working.

One other note, using an 'AirPort Base Station (Dual Ethernet)', my firmware version is 5.7. Airport Utility tells me it's up to date.