I lose internet when I disconnect Vonage

Hello all!
I recently discontinued Vonage VOIP. The setup was initially cable modem > vonage box > airport router. I have four mac set up on the airport network.
When I remove the Vonage box and connect the Airport Extreme directly to the modem, I lose the internet. I still have internet if I connect the modem directly to my mac, and the computers on the network still speak to each other through airport, but there is no internet.
If I put the vonage box back into the setup, the internet reappears and everyone can surf again.
Any ideas on how I can fix this?

Your AirPort Extreme router must not be configured correctly. It should be set to obtain a WAN IP address automatically and serve up DHCP on the local network.
Be sure that you cut all power (including battery-supplied power) on the modem before reconnecting the AirPort Extreme router to it—otherwise the cable modem may be looking for another MAC address and the AirPort Extreme router will not receive a WAN IP address.

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Me too!
It used to work just fine, but ever since I upgraded to snow leopard, I was having these intermittent internet outages, and it was driving me crazy. I finally realized it was happening every time Time Machine would start up. I turned Time Machine off, and now my internet works just fine. But this is obviously not an ideal solution. I'm glad to see I'm not alone.
Anyone else having this problem??

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Can this really be happening? I decided to try using a second monitor attaching via a mini dvi -dvi converter. Several attempts to get it recognised by the iMac without any success. Scoured the internet groups to see that very many (and I mean very many) others had this problem.
Solved it by swapping my dvi-I lead for a dvi-D lead. The difference is that the DVI-I lead has fewer pins than the DVI-D lead and the iMac mini dvi socked supplies a DVI-D signal. Phew!
So--pleased with myself at surmounting this I fired up Final Cut Pro, dragged the canvas window to the second monitor and had to play around with the resolution setting to get a stable playing of the timeline.
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Kaybee31 wrote:
So far no one has either claimed the same problem or offered a possible explanation.
As I said this loss of internet connection when 2nd monitor is connected is unbelievably odd.
It sounds like another case of EMI (Electromagnetic interference). I believe this is at the root of all these weird Airport or wireless problems. Interestingly enough many of these anomalies are exhibited on the newer generation Macs. Different materials were used, shielding could have been compromised either for cost cutting or by design error. Regardless I'm sure Apple is aware, unfortunately those who purchased these machines may be in the worse case, left with hard wiring for reliable internet and or network connections.......sorry.....

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I'm trying to help a friend with a MacBook problem. I've tried some things suggested in other posts (restarting router, repair permissions, etc.) with no luck. Two iPhones and my MacBook Air connect to the internet just fine. Whenever this MacBook wakes from sleep, Safari says it is not connected to the Internet. I click on Network Diagnostics button (on the Safari Error Page) and go thru the process, just clicking "continue" at each page ... at the end it says the connection is fine, and it is. The internet is then available just fine until the MacBook goes to sleep again, then it loses the connection and we have to go through the diagnostics again. The setup is an AT&T 2-Wire Router which connects to the Internet and creates the wireless network. I should also mention the Airport Express which he uses for Airtunes also stopped working (won't connect to the wireless network). The MacBook is running 10.5.8. BTW, this started happening after the hard drive was recently replaced by Apple at the local Apple store. Nothing else has changed.

This any help?
http://discussions.apple.com/thread.jspa?threadID=1305756
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Message was edited by: myhighway

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That's only one explanation, and an oversimplified one at that. In any event I think your best course of action might still require disassembling your network and adding one piece at a time. Assuming your business is closed for the weekend, now might be your best opportunity.
Short of that, power down all switches, Macs, other devices (though I doubt iPhones, voip phones or printers can contribute to the problem) and the Extreme (no need to reset it). Then, power up the Extreme and one Mac that is connected through a switch. Turn Wi-Fi "off" to ensure Ethernet is its only viable network connection, as well as for troubleshooting simplicity.
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Assuming it doesn't, turn its Wi-Fi back "on" and test.
The iPhones and iPads should also be working at this point.
Proceed to the next Mac and test the same way. If it's connected to a different switch, power it on also, then re-check the first Mac.

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This sounds odd to me. I think the long length of coax could be the reason. Maybe a signal amplifier or splitter on the line would help?
I have coax coming from the ont going up to my attic to a splitter then there's about 45-50 feet of coax going to my 2nd bedroom where my router is then another 5 feet of coax to the router from the wall outlet and I see no issues at all.
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My current config is: 2TB Time Capsule running 7.6.3, Mac Pro running Lion (10.7.5), MacBook Pro running Mountain Lion (10.8.3), and a couple of MacBook Pro Retinas running Mountain Lion. My current ISP is Comcast.
I have the Time Capsule set up to port forward port 80 to the Mac Pro for the purpose of running a web server. Most of the traffic is shuttling fairly large m4v files back and forth to work (work product from video editing work). I can reach the webserver on the Mac Pro just fine from the outside world, and can list files in the directory just fine. When I initiate a download (via right click on a link, "Save As..." or whatever), the Time Capsule reports that the Internet has been disconnected, and all machines inside my network lose access to the outside world. I have to either power cycle the Time Capsule, or disconnect/reconnect the Cat-6 cable between the cable modem and the Time Capsule to re-establish the connection. Interestingly, the download continues and completes on the other end without issue (so, the connection is actually still there!).
Before switching to Comcast, I was on AT&T Uverse - Uverse includes a router, so I had the TIme Capsule set up in Bridge Mode. That worked fine. I also have an older 500GB 1st generation Time Capsule. I set it up with the same config as my 2TB TC, and it shows the exact same behavior - internet disconnects upon initiating a file download through a forwarded port. I then hooked the Mac Pro up directly to the cable modem. I can initiate a download without issue, and I continue to stay connected to the Internet without problem. Called Comcast anyway - they report no errors on the line, but reset the whole device chain anyway. No change in behaviors.
I tried downgrading the Time Capsule software to 7.6.2 (the earliest version that came on it). No dice, same behavior.
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Do I understand this situation correctly? What have I missed in trying to troubleshoot this thing?

Apple Support reports that they have no training in the port forwarding features of the Time Capule or Airport products, and cannot help me resolve the issue because of that. So, I have a $300 router that apparently cannot perform a simple routing function (download through a forwarded port), that I cannot troubleshoot (because Airport software v7 is an epic fail in that regard), made by a company who cannot support it - and everything this $300 device is doing can be done by a $50 device with a $100 external hard drive?
Do I understand this situation correctly? What have I missed in trying to troubleshoot this thing?
Excellent summary.. I think you have covered all the salient points most thoroughly.
Port forwarding on the TC I would put into the category of "epic fail"
I have a nasty feeling it just doesn't work in many cases. Clearly from your situation the port is forwarded correctly.. it is the actual download that is causing the device to crash.. which is probably not the port forwarding itself that is at fault but rather the external link and opening another port for the download to happen.
Many of the issues were caused by using icloud and btmm.. which would work a lot better btw. Although the hassle there is needing to offer that as a service to any Tom Dick or Harry.
Let me suggest a work around or other things to try.
I also have an older 500GB 1st generation Time Capsule. I set it up with the same config as my 2TB TC, and it shows the exact same behavior - internet disconnects upon initiating a file download through a forwarded port.
Use 5.6 utility.. more info below. And take the firmware of this unit (Gen1) back to 7.5.2 (before icloud mess ups in 7.6).
You can go back to 7.5 firmware also in Gen4 TC if it is more than about 14months old.. Simply hold down the option key when you select firmware and the old versions will show up. If your TC came with 7.6.1 (the 7.6.2 was withdrawn as it was even bigger failure than 7.6.3). then you cannot go back.
You might also find downloading via http is not as reliable as using FTP.. FTP is a better and more efficient protocol. It should be no problem to setup ftp server on the mac pro to allow download via ftp even with a browser.
But in the end.. your $50 router suggestion.. well perhaps a little more than that.. $80-100 will work very well.. also this router can be setup with a Hard Disk and offer the files to the internet via FTP.. without needing full network access to your internal network.
How to load 5.6 into ML.
1. Download 5.6 for Lion.
http://support.apple.com/kb/DL1482
Click to open the dmg but do not attempt to install the pkg.. it won't work anyway.
2. Download and install unpkg.
http://www.timdoug.com/unpkg/
Run unpkg on the desktop.. it is very simple.. drag the AirPortUtility56.pkg file over to unpkg.. and it will create a new directory of the same name on the desktop.. drill down.. applications utilities .. there lo and behold is Airport utility 5.6 .. drag it to your main utilities directory or just run it from current location.
You cannot uninstall 6.1 (now 6.2 if you updated) so don't try.. and you cannot or should not run them both at the same time.. so just ignore the toyland version.. the plastic hammer.. and start using 5.6.. a real tool.
For screen shots see this post.
https://discussions.apple.com/thread/4668746?tstart=0

All devices on network lose internet connection when Dell laptop connected

I have successfully setup my AEBS network and am using two wireless clients--HP printer and Xbox access point (both 802.11 G) and a wired iMac that also is connected via Airport (so I can move it around if i want). I tried connecting my Dell Latitude D830 wirelessly and within a few minutes of connecting the AEBS loses internet connectivity. Unplugging and restarting the AEBS restores the internet but it just drops off again in less than 10 minutes. My question is, what might be causing this and what can I do about it? One peculiar thing to me is that I am using the WEP security option since the Xbox doesn't seem to support WAP2. When connecting the Xbox it reports the network as WEP but the HP printer and Dell Laptop but suggested the network was indeed WAP even though I'm clearing using WEP security. Maybe it's nothing but wanted to add for completeness.
The Dell is running Vista Enterprise edition.
Thanks for any help.

I've noticed a similar issue. Any time my HP/Vista laptop is connected to my AEBS it loses the network connection at inconsistant time intervals(~10-15 min).

When I connect imac to network via airport all devices on the network lose internet connectivity

Every device stays connected to the network but the internet stops working. Usually the network will continue to function normally for about five minutes when the imac connects, but then every device loses internet access via the network, NOT just the imac. As soon as I turn off the imac's airport they get internet connectivity back. A wired network connection to the imac seems to work OK.
The airport is configured as "Using DHCP"
Mac OS X 10.6.8
As far as I know, no changes have been made to the computer recently (but it is not my machine and the owner isn't here atm)
I found one other resource with the same problem here:
http://www.mac-forums.com/forums/internet-networking-wireless/183185-turning-my- macbook-airport-breaks-internet-connection-entire-network.html
but the solution didn't work. When I deleted the three files mentioned in the solution in that thread, my problem is not solved.
If you have any ideas or need more information I would love to hear from you.
Thanks guys.

Yes it is possible that the two machines are creating a Computer-to-Computer network and are not going through the Express.
To delete the Alias you may need to login with the Admin User.
Will
1GHz G4, 15" PowerBook, Airport Network, 1G iPod Mini Mac OS X (10.4.5) Updated - Get Started with iWeb (WillG4PB.com)

I frequently lose audio when in the middle of a call. I am not certain whether it is a full disconnect or just an audio loss. The person on the other end reports still being able to hear me, however, I suppose they could hear me speaking over another s

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My Iphone5 was replaced and having same Problem. Only does this when using bluetooth for talking.

I have the exact same issue... I've been using a Jabra Extreme2 and just this weekend, bought a Plantronics Marque2 and today had the same issue, so it's clearly not the headset but the phone or OS.
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What type of encryption are you using? Because that can and will change the method on how to fix your problem.
For Example:
If you are using WEP and you drop off you could try using…
WPA, it is more secure and you might get a more solid connection.
If you are using the 128 bit encryption…
Try changing it you 64 bit. You might get a more stable connection.
If you are using 64 bit encryption…
Try using 128 bit encryption OR try using WPA.
If you are using WPA and your drop off you could try using…
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And if all of that doesn’t work. Then I would highly encourage the following.
1 customize your IP address.
2 DO NOT broadcast your IP address, turn dynamic off, turn DHCP off.
3 DO NOT broadcast your SSID, turn broadcast off
4 change your SSID to some random word and numbers
4 just leave security off.
(OPTIONAL)5 turn on MAC filtering and add all your computers/ devices to the list. (WARNING) some devices [Nintendo DS, Wii, xBox, xBox 360, PS2, PSP, PS3] might not let you get the MAC address of the device. So if you use the MAC Filtering they might not work.
(OPTIONAL)6 if you turn MAC filtering to restrict you can add computers to a block list as they come up.
As long as you follow all of these guidelines, you should not have a security issue with your router. Because your entire network will be completely hidden
With Knowledge… Impossible means nothing.
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Computer experience: 11 years
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Try suggested links
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Hi emma22
Here is a document for Getting the Latest Firmware and Product Updates.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02979046&cc=us&dlc=en&lc=en&os=4063&product=507...
I checked and there is no way to turn off the sleep mode on this model.
I included a document for Printer Does Not Maintain Wireless Connection and to try Solution three: Assign a static IP address to the printer. You will need to get your It department most likely to set this up for you if you don't have full admin rights.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03678348&tmp_task=solveCategory&cc=us&dlc=en&la...
Hope this helps.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Gemini02
I work on behalf of HP

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