I bought an AirPort Extreme Wireless router this weekend and hooked it up to my cable modem at home. I used the Airport Utility to set up the base station and create a wireless network. At first, I used DHCP to set up but got a yellow light and a message saying that the internet connection was not working. So I hook my MacBookPro directly to the cable modem ethernet port and got all the IP Address, Subnet Mask, Router and DNS information from my ISP, Cox Cables. After this, I connect the AE to the cable modem ethernet port and used the Airport Utility to set up the base station again. I chose manually set up this time with the IP address I got from ISP. I got it working without any problem and my MacBook Pro was able to detect to the AE. However, I still can't access the internet. The light on the AE itself is solid green, but there is no connectivity to the internet. Any help will be appreciated. I'm using Mac OSX v10.6.6.
If your Airport Extreme is not connecting to internet then you need to configure your device in the following way -
Step 1: First of all, power on Airport Extreme Base Station by plugging it into the wall. After plugging the device, open Airport Utility app.
Step 2: Next, move to the top left side of the screen and you will see the Airport Utility dialog box. After this, tap on “Other WiFi devices” or “Other Airport Base Stations”. Now, click on Airport Extreme that is listed in the displaying list. If it is not listed then wait for a few moments so that it can come up.
Step 3: Move to Network name and then tap on option “Base Station Name”. Note one thing i.e., you have to enter venue name followed by TB.
Step 4: In next step, you have to enter a password that you could remember easily. Again enter the same password in the “Verify Password” field. After entering a password hit Next button.
Step 5: If your Airport Extreme is not connected to the modem then just click on Next button. Just choose the option, “Don’t send”. Again hit Next button.
Step 6: Now, go through router’s setup. When setup process gets complete, you will see a notification. The notification will appear in the bottom right-hand corner, just click on Done. After this, click on the picture of Airport Extreme base station that is present in Airport Utility. Now, Airport Utility will report three errors, just click on each error and ignore them.
Step 7: After ignoring an error, you will see a green light. Once you see three green lights, just click on Edit button.
Step 8: Move to the top side and click on Wireless > Wireless options.
Step 9: To allow a 5Ghz frequency band, just click on the box that is present on the top side. In the present time, 5Ghz is preferable as it provides faster WiFi. Then click on Save button.
Step 10: Next, click on Update.
Step 11: Once green light in your Airport Extreme router blinks, just understand that your device is good to go.
Reset the Airport Extreme back to default settings and start over. You will also have to release the WAN IP on the modem by power cycling it. If the router doesn't grab an IP from the modem after the power cycle and reset, the chip that controls WAN functionality in the router is most likely bad.
There is a separate chip that controls the 3 LAN ports, and that's why they work okay when you plug into them. If this is not working then go to Apple menu and select System Preferences.
Choose Built-in Ethernet from the Show pop-up menu and go to PPPoE tab. Click the PPPoE Options button. Deselect the "Connect automatically when needed" option. Finally, click OK and apply the changes.