Trying to set up airport extreme with a dsl modem and get DSN server not found message . Get a green light on airport but no internet modem and get

Am attempting to set up a Wi Fi network with an airport extreme. Get most of the way through the setup (have a dsl modem) but get an error that it cannot connect to the internet. Says I have a problem with a DSN server and asks for what appears to be a series of numbers. I had an old airport express working for some time and never saw this.
Decided to upgrade since the express was not powerful enough to work in the whole house.

It is always a good idea when changing out networking hardware to perform a complete power recycle of all of your networking gear.
Please try the following:
Power-down the modem, AirPort Extreme Base Station (AEBS), and computer(s). Leave them powered-off for at least 10-15 minutes.
Power-up the modem; wait at least 10-15 minutes to make sure that is has enough time to initialize.
Power-up (plug into power) the AEBS; wait at least 5-10 minutes or until its status light is a solid green. (Note: The status light may continue to flash amber after this timeframe. This is ok as it may just be letting you know that some additional configuration items need to be taken care of like setting up wireless security.)
Power-up the computer(s).
Computers connected to the AEBS by either wire or wireless should now be able to access the Internet. Please post back your results.

Similar Messages

No internet, "PPPoE Server Not Found" message. Same problem with both old and new modems.

Help please!
My internet connection with my old Westell 6100 modem was working fine, then quit all of the sudden and would not restart. The DSL and Data lights on the Westell modem were both green. The Internet light alternated between red and off.
I tried every troubleshooting thing I could think of:
Powering down and re-starting the modem and computer.
Resetting the modem.
Checking all of the wire and jack connections.
I plugged my computer ethernet cable straight into the modem, bypassing my router.
I tried both Windows and Mac computers.
I plugged the modem directly into the network interface on the outside of my house to bypass all of my house wiring.
I checked all my phone jacks with a telephone tester to make sure both phone lines were working and not reverse-wired.
I made sure I did not have a DSL filter installed on the modem line.
Verizon Tech Support did a line test and told me the line was fine but that there might be a problem with either my modem or something at the "central office" (not sure what that means). Verizon also sent me a new router as well -- a D-Link DSL-2750B.
The new D-Link router also does not connect to the internet (same problem). The DSL, Data, and Internet lights are all green on the D-Link. I have the computer directly connected to the modem with a new ethernet cable. I repeated the above troubleshooting steps. I went into the router configuration 192.168.1.1 and ran the modem's "Internet Troubleshooting" tests.
There were two error messages on the router configuration screens:
1."PPPoE Server not found" error message is shown on the summary screen.
2."No internet infrastructure present. Please call your infrastructure provider." is shown in the "internet troubleshooting" test results.
Verizon had me change some settings inside the router configuration -- no dice. Verizon ran another line test. A "Level 2 Tech" took over the call and told me that he thinks that the cause of the problem is that the outside wiring coming to my house is reverse-wired. How can this be true since my DSL worked for 2 years before this, my phone line tester indicates my phone lines are wired the right way, and my router reports "PPPoE Server Not Found?"
Verizon is sending out a repair tech to check the outside wiring but I don't think that is the problem at all.
HELP!
Solved!
Go to Solution.

If you're getting DSL sync (solid DSL light), this sounds like a case of a bad line card to me. I've seen it happen before where it wasn't an account or route issue to the network.
========
The first to bring me 1Gbps Fiber for $30/m wins!

I have a Airport Extreme that is dropping the wireless signal alot (several times a day). The green light will go amber but the internet service (ethernet cable) will still be fine. The wireless icon on devices with go away.

I have a Airport Extreme that is dropping the wireless signal alot (several times a day) The green light will go amber, but the internet service is still ok if your using an ethernet cable directly plugged in. When the light goes amber all devices that is using wireless will lose there wireless icon. The only way to get the green light back is to unplug the Airport device and replug it back in. I tried the reset on the back but still no luck. What is the fix?

Let's see if I can get this straight.
You have an Airport Extreme base station that is set to "Create a wireless network" and you have the box checked for "allow this network to be extended"....
Then you have an Airport Express that is set to "Extend a wireless network" which you selected the name of your network in the box...
Correct?
See this Apple document:
http://support.apple.com/kb/HT4259?viewlocale=en_US&locale=en_US
The wireless unit on the right of the diagram can be either of the newer Apple base stations.
Extreme, Express, Time Capsule

Problems with connecting AirPort Extreme with SBC DSL Modem

We bought the AirPort Express specifically because we were told it was a snap to setup with Windows and DSL. I cannot get it set up. Have Windows Vista, AT&T DSL and a 5100 Speed Stream DSL modem. After a couple of failed attempts, I called AT&T support for help and was told to make a change to the settings on the DSL modem. Still didn't help. When I gave up on the AP Ex and tried connecting the DSL cable directly to the computer, I couldn't get connected to the internet at all so spent another hour on the phone with AT&T support to get things working. Second support person told me that the suggestion I was given was wrong but it is on the 5100 Speed Stream support page so I'm not sure. Thanks for any suggestions.

Thank you so much for your help. I tried those settings but the connection didn't work. However, it is working by leaving some of the default settings. See the underlined settings below.
That leaves me with other questions:
1) But what are the conquences of those settings?
2) How do I determine if I have a secure network? (other than the computer, don't have any other wireless devices to check though we are planning to purchase one in the future). When I check on the windows network
center, everything is "off" except password protected sharing. I was hoping to see a security-enabled network identification for this new network somewhere.
2b) I set up wireless security WPA/WPA2 Personal but not a guest network (yet).
3) A problem (amber light) was discovered because:
Allow Setup over WAN was checked. For now, I ignored the warning for now but think I need to change it.
4) under the AirPort Utility/Summary page, what should the IP address be? It is completely different than the IP address for the DSL modem.
5) The reason I didn't set up a guest network yet was when I originally tried to set it when when "Connection Sharing" was set to Off (Bridge Mode) - as suggested - I received a warning that Guest network requires that this AP Express needs to be set to share a public IP address uding NAT/DHCP.
Sorry for the very basic questions. This obviously is my first attempt at setting up a wireless router.
And thanks for any help.
To set up the AXn as a "bridge," using the AirPort Utility, either connect to the AXn's wireless network or temporarily connect your computer directly (using an Ethernet cable) to the Ethernet port of the AXn, and then, try these settings:
AirPort Utility > Select the AXn > Manual Setup > AirPort > Wireless tab
Wireless Mode: Create a wireless network
Network Name: <enter the desired Network Name or SSID>
Radio Mode: 802.11n (802.11b/g compatible) Set to automatic instead (and finding 80211a)
Channel: Automatic
Internet > Internet Connection
Connect Using: Ethernet
Configure IPv4: Using DHCP
Ethernet WAN Port: Automatic (Default)
Connection Sharing: Off (Bridge Mode) Set to share a public address

AirPort Extreme with USB hard drive

Hi...I have an AirPort Extreme with a Maxtor OneTouch 250MB hard drive attached (via USB port). I have two computers which access the internet and the hard drive through the AirPort.
The first computer is a 1.8 GHz PowerPC G5 (with 3GB of SDRAM). The second is a 2 GHz Intel Core2 Duo IMac (with 4GB of SDRAM).
Both computers have full signal strength via AirPort and both computers have no connection/speed issues with the internet. It's when trying to copy to/from the USB disk that there are problems. The older Mac, the G5, has no problems at all. Great copy speeds in both directions, I can even work off of files on the USB disk without a problem.
The iMac, though, has a problem writing to/from the external hard disk. It connects without a problem, but after that, things come to a standstill.
For example, I can copy a 25MB file from the AirDisk to the G5 in about 15 seconds. If I try to copy the same file to the iMac, it takes as long as 5 minutes. I've tried every setting I can in AirPort Utility, including trying each of the channels individually, and nothing helps. I've disconnected the G5 from the network and that didn't make a difference, either.
Other info...the AirPort firmware is updated to version 7.3.2 and both Macs are updated to System 10.5.4.
If anybody has any advice, I will be eternally grateful.

I have a very similar problem. I have a 2.8 GHz iMac with 2GB RAM and am using OS X v10.5.4, and an Airport Extreme (v7.3.2), both updated to latest firmware. I have a 500 GB TrekStor external HD connected to the AEBS via USB. The TrekStor HD was pre-formatted in FAT32 and is visible on my iMac's desktop and in Finder but I cannot transfer files to it or see files on it. When I drag and drop a file on the TrekStor, it sometimes seems to go well but then the file is not visible via Finder, and sometimes I get an "insufficient privileges" message. I repair permissions on the iMac's internal HD without any change. I am logged in as the admin. All assistance is much appreciated!

Firefox does not load pages, comes back with server not found

First I thought this was a problem with Firefox 4 beta but now I am having the same issue with 3.6.16
About 70% of the times, Firefox does not open the web page and comes back with "Server not found" message. Interesting thing is it comes back with this message on the first 2 tries and then on the third try for the same link it will display the page. Always, 2 fails and 3rd time it works. Now during the first two times, internet commnection is working and if I try the same URL on IE it works without any issues. This started happening after I tried Firefox 4 beta. 4 is not uninstalled and I am back to 3.6.16. But the issue remains.
I am using Win 7 64 Home Premium, SP1 is not applied yet but all updates are in place.

Well, I'm using Firefox 4.0 and have the same problem. I tried to open my private homepage and my *.net-domain comes back with the "Server not found" message (my *.com-domain loads without any problem - same contents on both websites)
I also tried to open my net-domain in FF portable - without any problems.
Clearing the cache, deleting the cookies etc in FF4 does not help either.
I also had the experience that FF4 does not load CSS5 websites (e.g. deviantart) properly (CSS does not work, website shows simply the html-version, a disgusting look). With FF portable the problem does not exist.
I tried this on different machines (e.g. Windows XP Pro SP3 (office PC), Win7 Pro 64, Win Vista SP2... (home PCs) and there I'm experiencing the same issues with FF4 and various websites.

"server not found" with one ip address but ok with vpn ip

Windows 7 For the last few days I get "server not found" message when I try to access many sites (including Mozzilla help). This happens with ie also.However when I use a different IP (via my VPN) everything is OK.
What is going on?

Server Not Found - Troubleshoot connection problems
*https://support.mozilla.org/en-US/kb/server-not-found-connection-problem

Desktops get "Server Not Found" errors with WRT160N

I'm sharing my WRT160N with 2 laptops and 3 desktops. My laptops connect to the internet ok... drops now and then tho... but my desktops frequently get a "Server Not Found" error. After repeated "try again" clicks, it eventually connects again. Any ideas??

Try this ;
Open an Internet Explorer browser page on your wired computer(desktop).In the address bar type - 192.168.1.1 and press Enter...Leave Username blank & in Password use admin in lower case...
Under the Setup Tab...reduce the MTU value to 1300 and save settings.
Also reduce the card speed of the dekstop... (assuming it is window XP)..Click on the Start button >>> Control Panel >> Network Connections >> Right click on the ""Local Area Connection"" icon and select properties-Here click on the "Configure" button- Click on the "Advanced" tab- In the "Property" box highlight Link speed and duplex/Connection type/Network or Media type- And in the "Value" box select 10 Mbps half duplex/ 10 base T/10 base half mode and click on OK.. Now restart the computer.

Trying to update Apple TV software, but keep getting "update was not successful" message--what gives?

Trying to update Apple TV software, but keep getting "update was not successful" message--what gives? Definitely have wifi connectivity.

If your problem persists get yourself a micro USB cable (sold separately), you can restore your Apple TV from iTunes:
Remove ALL cables from Apple TV. (if you don't you will not see Apple TV in the iTunes Source list)
Connect the micro USB cable to the Apple TV and to your computer.
Reconnect the power cable (only for Apple TV 3)
Open iTunes.
Select your Apple TV in the Devices list, and then click Restore.
(You may already have a micro USB cable if you have a camera or other digital device)

How to set up Airport Extreme with Charter ARRIS Modem TM902A for the first time for WIRELESS.

How to set up Airport Extreme with Charter ARRIS Modem TM902A for the first time for WIRELESS.
When Charter Tech goes to your site, have them connect the modem up, but do not connect the modem to your iMAC or MacBook Pro. What you want to do is connect the Airport Extreme to the iMac or MacBook Pro first with the Ethernet Cable. You have to do this to configure via Airport Utility to set up the Base Station Name & Base Station Password.
You will then create/configure a Wireless Network, create your Wireless Password that will be entered on each of your Devices, example, Apple Tv, your iPhone, etc., you want to allow access to your Wireless Network you are creating.
Wireless Security will be -> WPA/WPA2 personal or just WPA2
Enter the Wireless Password you want
Verify the Wireless Password (enter it again)
After it is created you will see it on the Airport Utility window with the name you created for it and to the left, will be a Dot (circle that will be yellow).
Next you then want to unplug the power to the Airport Extreme, and then take the end of the Ethernet cable you unplugged from the iMac or Lap top MacBook Pro and connect it to the back of the Modem.
Next unplug the power cord from the modem and wait about 5 minutes, then plug the power back into the Arris Modem and wait until all lights come back on the modem wait
about 5 minutes, then plug the power cord back to the Airport Extreme and you will see it the light blinking yellow. Wait about 5 to 10 minutes, during this time Restart you IMAC or MacBook Pro, and once it is back up click on the Airport Utility and you should see on the Airport Utility screen.
For INTERNET to the left the light should be green and you should see the Airport Extreme also appear and the light to the left on the screen should also be green. If they are, you then should be able to click on the Wireless Symbol on top of bar of the screen and click to select the Wireless Network Name you created.
If you Do Not See the light (Icon) next to INTERNET turn Green, or if you see the Internet Light Green, but the Light (Icon) next to the Airport Extreme is yellow, unplug the power again to the modem and unplug the power again to the Airport extreme and wait about 15 minutes or up to 30 minutes. Then plug the power cord back to the modem wait till all the lights light up then, plug the power cord back into the Airport Extreme and Restart your iMAC or MacBook Pro.
The Airport Extreme light should change from yellow to green. Open up the Airport Utility to see what the indicators are showing they should both be green. Again select Wireless network you created under the Wireless Icon on the top right of the screen. Open Safari and see if you are able to Route to a web page or the apple site should appear.
WHAT TO DO IF YOUR AIRPORT EXTREME WAS PREVIOUSLY SET UP FOR USE WITH ANOTHER CARRIERS ROUTER OR MODEM.
NOTE: If you already had your Airport Extreme connected for example, I previously had ATT Uverse and the Airport Extreme was connected to the Wireless Router Model 3801HGV, I disabled the Uverse Wireless and used the Airport Extreme for the Wireless signal in bridge mode, as the Airport extreme Signal is much stronger than the Uverse router, and I was able to obtain a Wireless signal with the Airport Extreme way much better with no signal loss which was very very frustrating with the Uverse router.
Anyhow if you had it hooked up like this, now that you will be using it with the Charter ARRIS Modem TM902A, you will need to reset the Airport Extreme to clear out the old data it has in memory, with the previous set up otherwise it will not work. Trust me I spent 6 hours trying to make it work reading all Apple Support Community questions and answers relating to this type issue/problem others have been having trying to get their set up working. I tried all the tips, and I finally decided just to see if by chance I would be able to connect with someone with Charter Tech support who might be familiar with Apple to be able to assist me and by luck I did. He told me why it was not working and was all due the previous configuration with the ATT Uverse router was still in memory with the Airport Extreme. Finally it was 10:30 PM when I decided to call Charter Tech Support and I had been working on this since 3:00 pm pacific. I did not call them earlier as all the post I read said they never received any good help from Charter. After calling them I finished up by 11:00 PM and was able to finally connect Apple Tv, iMac, iPhones and Macbook Pro. We love our Apple Product and Happy all is connected with the new
Internet Provider Charter. I must say the speed is way way much better than it ever was with AT&T Uverse.
THIS IS WHAT YOU WILL NEED TO DO:
First you will need to unplug the Airport Extreme, then by taking the tip of a pen or paper clip end you need to push the reset button on the back of the Airport Extreme and hold it
down and at the same time plug the power cord back into the Airport Extreme count to 5 or 10 then release the reset button. Then once he light in front of the Airport Extreme stops blinking you need to plug the Ethernet cable from the Airport Extreme to your iMAC or Macbook Pro, and restart which ever one you have, then open the Airport Utility once it is back up. If you see airport extreme pop up with the old network name or it shows and yellow triangle click on the Airport Extreme ICON it will not let you configure it but will ask if you want to get rid of it or remove and just do it. Then Again restart your iMAC or MacBook Pro, open up Airport Utility again, and on the top left you should see under “Other Airport Base Stations” the MAC ID for the Airport Extreme.
You will then create/configure a Wireless Network, create your Wireless Password that will be entered on each of your Devices, example, Apple TV, your iPhone, etc., you want to allow access to your Wireless Network you are creating.
Wireless Security will be -> WPA/WPA2 personal or just WPA2
Enter the Wireless Password you want
Verify the Wireless Password (enter it again)
After it is created you will see it on the Airport Utility window with the name you created for it and to the left, will be a Dot (circle that will be yellow).
Next you then want to unplug the power to the Airport Extreme, and then take the end of the Ethernet cable you unplugged from the iMac or Lap top MacBook Pro and connect it to the back of the Modem.
Next unplug the power cord from the modem and wait about 5 minutes, then plug the power back into the Arris Modem and wait until all lights come back on the modem wait
about 5 minutes, then plug the power cord back to the Airport Extreme and you will see it the light blinking yellow. Wait about 5 to 10 minutes, during this time Restart you IMAC or MacBook Pro, and once it is back up click on the Airport Utility and you should see on the Airport Utility screen.
For INTERNET to the left the light should be green and you should see the Airport Extreme also appear and the light to the left on the screen should also be green. If they are, you then should be able to click on the Wireless Symbol on top of bar of the screen and click to select the Wireless Network Name you created.
If you Do Not See the light (Icon) next to INTERNET turn Green, or if you see the Internet Light Green, but the Light (Icon) next to the Airport Extreme is yellow, unplug the power again to the modem and unplug the power again to the Airport extreme and wait about 15 minutes or up to 30 minutes. Then plug the power cord back to the modem wait till all the lights light up then, plug the power cord back into the Airport Extreme and Restart your iMAC or MacBook Pro.
The Airport Extreme light should change from yellow to green. Open up the Airport Utility to see what the indicators are showing they should both be green. Again select Wireless network you created under the Wireless Icon on the top right of the screen. Open Safari and see if you are able to Route to a web page or the apple site should appear.

I just got a Charter Modem. Model TM822. While I was moving, my Airport Extreme was still at my old place.
I have a Linksys WRT320N I used for the initial Charter setup.
I can get my Airport to work here, but the Internet light on the Modem flashes Yellow.
Hasn't caused any issues so far but one thing I did notice.
On the Linksys there were 3 DNS servers listed.
The Airport Extreme only lists 2 and i don't see where I could add another, only change whats already there.
I tried everything above, but light on modem still flashes yellow.
I have the technicians cell phone. Told me "that shouldn't be" and gave the same advice listed above.
I'll break down and call Charter one day, see if it's on their end. NSA tracking may need a reset LMAO.

Trying to set up time capsule with airport exteme. Apple advises to use manuel setup and click on Advanced. Then enter mobileme ID. I did this but Time Machine doesn't display anything on the capsule window.

Can't set up my time capsule on Airport Extreme (updated). Apple instructions are to use manual set up. Click on Advanced tab. Click on Mobileme and enter Mobileme ID and password. I did this. But Time Machine window is blank. Tryed to click on update window after entering Mobileme ID but Airport does not respond (turn of then on)

mickair wrote:
I have been experiencing some networking problems
Welcome to Apple's discussion groups.
I have the latest Time Capsule ("TC"), an old Airport Extreme Base Station ("AEBS") bought in 2007 and 2 Airport Expresses, one bought in 3 months ago ("AE-Alpha") and the other bought back in 2007 ("AE-Beta"). All of them have been updated with the latest firmware.
Based on those dates, the AirPort Extreme is probably flat (as opposed to dome-shaped), making it 802.11n-capable. The Newer AirPort Express is probably an 802.11n-capable model A1264, while the older one is probably a model A1084 or A1088.
I use {the TC's} DHCP function ... to avoid unauthorized use.
This a discussion for another thread, but that's not what DHCP is for.
The wireless setting for it is to participate as WDS Main, but after reading various posts, it seems WDS is a bad idea
With that older AirPort Express you're stuck with WDS unless you decide to replace it with a newer model.
The AEBS is currently setup as being a WDS Relay at the moment
Why a relay? That's only needed if there's another base station "beyond" it that is configured to depend on it.
Since the AEBS is connected to the TC via Ethernet, you should probably configure it as a "roaming network":
http://discussions.apple.com/thread.jspa?threadID=2273124
{The AE-Alpha} connects fine as WDS remote at the moment
I don't have any experience with mixed WDS and non-WDS networks, but since it's 802.11n-capable, you may be able to configure it to "extend" the network of the TC rather than as WDS. Look for a setting on the TC to "Allow this network to be extended".
Physical location:
AEBS in one end, TC and AE-Alpha in the middle while AE-Beta on the other end.
A device such as "AE-Beta" that's supposed to extend a network shouldn't be "at the end" but should be half way between the central base station and the clients that need an extended network.

How to set up airport extreme with TPG ADSL2 ?

How to set up airport extreme with TPG ADSL2 ?

I just got a Charter Modem. Model TM822. While I was moving, my Airport Extreme was still at my old place.
I have a Linksys WRT320N I used for the initial Charter setup.
I can get my Airport to work here, but the Internet light on the Modem flashes Yellow.
Hasn't caused any issues so far but one thing I did notice.
On the Linksys there were 3 DNS servers listed.
The Airport Extreme only lists 2 and i don't see where I could add another, only change whats already there.
I tried everything above, but light on modem still flashes yellow.
I have the technicians cell phone. Told me "that shouldn't be" and gave the same advice listed above.
I'll break down and call Charter one day, see if it's on their end. NSA tracking may need a reset LMAO.

I am getting a "connection timeout" message when trying to access my Airport Extreme with various laptops, Play Station 3 and Wii. My Airport Extreme is about a month old; it was working fine until about a week ago. C

I am getting a "connection timeout" message when trying to access my Airport Extreme with various laptops, Play Station 3 and Wii. My Airport Extreme is about a month old; it was working fine until about a week ago. Suddenly, the "timeout" is not allowing me to connect to my wireless network.

It could be that there's a new source of interference.
Use the advice in the second message of this thread to investigate the signal and noise levels that each client sees:
http://discussions.apple.com/thread.jspa?threadID=2347845&start=1
By the way, you've been misled by the poor field labeling into trying to type your entire message into the subject field, instead of putting a one-line topic description there.

Am replacing airport extreme with Time Machine and want to upgrade from Tiger to Snow leopard. Am told I should manually back up into T Machine before OS update but set up utility won't allow anything with OS below 10.5 and I'm 10.4.11. What to do?

Am replacing airport extreme with Time Machine and want to upgrade from Tiger to Snow leopard. Am told I should manually back up into T Machine before OS update but set up utility won't allow anything with OS below 10.5 and I'm 10.4.11. What to do?

I think you mean you are replacing your Airport Extreme with a Time Capsule. Time Machine is software integrated into OS X 10.5 & 10.6 used to automatically backup a system to an external HD. Time Capsule is an Airport Extreme that has a hard disk integrated into it that can be used for storage or as a Time Machine backup drive.
Because you are currently on Tiger 10.4.x you can backup to a external HD using SuperDuper or Carbon Copy Cloner. Having a backup is very wise before doing any major system update. After you have created the backup and have successfully upgraded to Snow Leopard you can still use the external HD for many things. The strategy I'd recommend is to use the new Time Capsule as your Time Machine backup and then use the external HD as backup using SuperDuper or CCC. Redundant backups is wise because backups can (and do) fail too! In addition both SD and CCC are bootable clones, this is useful in that if your internal HD crashes you can boot from a cloned drive and continue working until the internal HD is replaced.
Below are some links to some articles from MacWorld, I would recommend reading them where you find a common theme, redundant backups. Backup Plan I, Backup Plan II & Backup Plan III.
Roger

I have replaced my airport extreme with a new airport time capsule and want to know how I can set up my extreme to extend/strengthen my Wi-Fi?

I have replaced my airport extreme with a new airport time capsule and want to know how I can set up my extreme to extend/strengthen my Wi-Fi?

Start with a "hard reset" (see below) then use AirPort Utility to configure it.
When asked what you want to do with it, indicate that you want it to add to an existing network, similar to the following screenshot.
Follow the prompts that will eventually lead you to the words "wirelessly extend..." as shown.
To "hard reset" an AirPort Base Station: make sure it's powered up, then press and hold its tiny reset button and keep it depressed for five to ten seconds, long enough for its LED to flash amber rapidly. Release the reset button. Then, the LED will glow amber steadily for about a minute. Then, it will flash amber, slowly, about once every second or two, waiting for you to configure it with AirPort Utility.

Trying to set up airport extreme with a dsl modem and get DSN server not found message . Get a green light on airport but no internet modem and get

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