AirPort no longer connects to internet but local networking is fine.

I have an Airport Extreme router version 7.6.3. Recently the router has been dropping connections with my cable modem. I have had to reboot the modem and the router to reconnect. It is no longer connecting to the internet at all. All of my wireless devices can find the Airport and connect to my local WiFi network but no internet access. I tried connecting my macbook directly to the cable modem via ethernet cable and had some of the fastest internet connections in recent memory. How do I make the router work?

mopar408 wrote:
I did. They very politely told me - after checking the connection for 15 mintues with me online - that it appeared to be a router issue from thier perspective. I was wondering if there is some way to test the routers basic functions, etc.
If you haven't already done so, install 5.6 utility on your Mac..
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.
Leave the package open on the desktop so you can see the file. AirportUtility56.pkg
2. Download and install unpkg.
http://www.timdoug.com/unpkg/
Run unpkg on the desktop.. If your Mac refuses to run the software, because it wasn’t downloaded from the Apple store, go to security in preferences and allow other software to work.. this is limitation of trade methinks. You can set back later if you like.
Now drag the AirPortUtility56.pkg file over to unpkg.. and it will create a new directory of the same name on the desktop.. in finder, open the new directory, 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 version 6 (now 6.3 if you updated) so don't try.. and you cannot or should not run them both at the same time.. although I have had no problems when doing so.
Roll the firmware version back to 7.6.1 or earlier if it will work.. the latest firmware is not the greatest by a long shot.
Then using 5.6 utility you can access the advanced logs on the Extreme.. you cannot do that with v6 utility.
It should show disconnections happening.
You can also access the WAN ethernet settings and set the Airport to 100mbit full duplex.. this seems to have helped people lately.
Of course nothing like this exists in v6 utility.. being a toy utility.

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Well, to anyone else that may have had this problem, I was able to reset the base station to its factory settings. Turns out I wasn't holding the reset button down long enough (duh). Went through Airport Setup Assistant and everything's working fine now. Phew!

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Hello there, WoodenToy.
The following Knowledge Base article offers extensive troubleshooting steps for troubleshooting your issue:
Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT4628
Although the entire article is a great resource you may want to focus on the section entitled: "Symptom: My Mac does not connect to the Internet".
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

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Hello All,
I have been having this problem for the past 4 months or so(ever since I got the server). I have a Windows Server 2012 R2 machine running a DHCP server. I have 2 network devices installed on it. One hardwired to the motherboard and one
connected by a PCI-E slot. I got a second card because I thought something was going on with the primary NIC. However I have the same issue with the 2nd NIC. I have remedied the issue by setting the server to restart every 2 days, very inconvenient.
After restart, everything is fine for 2 days. All drivers are fully up-to-date and Windows is up-to-date as of last months' updates. I also updated BIOS to the latest version. Any help will be much appreciated.
I have ruled out hardware issues, and here are my specs:
Intel Core i7 3rd Gen @3.4GHz
8GB DDR3 RAM
Server 2012 R2 Standard 64-Bit
Intel On-board Gigabit Ethernet
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Hi,
Is DHCP the only service that the server is used for?
What are you using for DNS?
When internet connectivity is lost on a client device, what does IPConfig show (a correctly assigned DHCP address or an APIPA address)?
Is DHCP AD Integrated?
How long is the DHCP lease?
Steven Hodson | http://www.stevenhodson.com | @_hodders
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This posting is provided "AS IS" with no warranties, and confers no rights.

Not connecting to Internet - but on Network

Hi, My Macbook can connect to my Network - through an Airport Express which is wired to a cable modem. However when I launch Mail or Firefox I can not connect to the internet? My son's Macbook (using the same Network) connects without a problem and our PC also connects to the Network and Internet.
I used to be able to connect to the Internet through the exact same configeration a few weeks ago!!
thanks

Good news, Genius Bar is stocked with Geniuses. He created a new network location and bam, I was on the Apple Store's wifi accessing internet. Switching back to automatic location (or any other old one I had made myself long ago) and it dies.
Corruption somewhere. So, try that first:
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I did throw away what I thought was the prefs file for this (back on Saturday) but I must have missed the pertinent one.
Give it a try.
Oh, and BTW, whenever I've had a laptop that need to be shipped in for fixing (Apple stuff of course) I've always had it back in hand fixed in a matter of a few days, like 3!! Apple's service really is amazing, it'd better be, we pay for it!

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So our two-month-old MacBook Pro has developed an unusual tic. Now when we wake it from sleep, it is initially unable to access the internet through browsers or mail -- even though AirPort is connecting to the network and other devices on the network (iPhones and computers) can reach the internet just fine. Running Network Diagnostic says that the internet connection is fine. After several minutes, with no user input, it restores the internet connection. This machine is running OS X 10.7.2.
Here is what I found in Console when I slept the computer and woke it (note that "tardis" is our wireless network):
10/28/11 9:02:15.000 PM kernel: sleep
10/28/11 9:02:52.000 PM kernel: Wake reason: EC.LidOpen (User)
10/28/11 9:02:52.000 PM kernel: Previous Sleep Cause: 5
10/28/11 9:02:52.000 PM kernel: wlEvent: en1 en1 Link DOWN
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10/28/11 9:02:52.000 PM kernel: en1: 802.11d country code set to 'X0'.
10/28/11 9:02:52.000 PM kernel: en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140 149 153 157 161 165
10/28/11 9:02:52.000 PM kernel: Sound assertion "0 == fAudioEngineArray" failed in AppleHDADriver at line 3047 goto Exit
10/28/11 9:02:53.000 PM kernel: en1: 802.11d country code set to 'US'.
10/28/11 9:02:53.000 PM kernel: en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140 149 153 157 161 165
10/28/11 9:02:53.166 PM UserEventAgent: CaptiveNetworkSupport:CaptivePublishState:1211 en1 - PreProbe
10/28/11 9:02:53.173 PM configd: network configuration changed.
10/28/11 9:02:53.000 PM kernel: nstat_lookup_entry failed: 2
10/28/11 9:02:53.000 PM kernel: nstat_lookup_entry failed: 2
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10/28/11 9:02:55.000 PM kernel: wlEvent: en1 en1 Link UP
10/28/11 9:02:55.000 PM kernel: AirPort: Link Up on en1
10/28/11 9:02:55.000 PM kernel: en1: BSSID changed to 00:14:6c:94:93:72
10/28/11 9:02:55.000 PM kernel: AirPort: RSN handshake complete on en1
10/28/11 9:02:55.044 PM configd: network configuration changed.
10/28/11 9:02:55.070 PM UserEventAgent: CaptiveNetworkSupport:CaptivePublishState:1211 en1 - Probe
10/28/11 9:02:55.071 PM UserEventAgent: CaptiveNetworkSupport:CaptiveStartDetect:2343 Bypassing probe on tardis because it is protected and not on the exception list
10/28/11 9:02:55.071 PM UserEventAgent: CaptiveNetworkSupport:CaptivePublishState:1211 en1 - Unknown
10/28/11 9:02:55.073 PM configd: network configuration changed.
10/28/11 9:02:56.563 PM ntpd: bind(25) AF_INET6 fe80::2acf:daff:fedf:b3a6%5#123 flags 0x11 failed: Can't assign requested address
10/28/11 9:02:56.564 PM ntpd: unable to create socket on en1 (57) for fe80::2acf:daff:fedf:b3a6#123
A short time later, Safari was able to connect to the net. Console then added this:
10/28/11 9:04:32.238 PM airportd: _doAutoJoin: Already associated to “tardis”. Bailing on auto-join.
10/28/11 9:04:32.000 PM kernel: en1: BSSID changed to 00:14:6c:94:93:72
Does this mean anything to anyone? Thanks in advance for any help you can offer.

I am having the exact same problem. It started with 10.7, was fixed with 10.7.1, then came back again with 10.7.2.

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http://support.apple.com/kb/HT4928
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AirPort no longer connects to internet but local networking is fine.

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