Currently Being ModeratedJan 22, 2013 7:04 PM (in response to Ashsrighthand)
Since you have the problem on more than one device, the problem lies in either the ABS or your router.
The sure-fire way to debug this is to elimiate the ABS from the network and connect directly to the router. This would required a wired Ethernet connection (adapter available on the online store).
Currently Being ModeratedJan 22, 2013 8:01 PM (in response to Ashsrighthand)
I have been suffering with this problem on my Retina Macbook Pro.
What seems to be the problem is DHCP allocation. My AirPort network is a little complicated, with lots of devices, and I think the AirPort Extreme was having problems allocating IP addresses.
I only did this this morning so I'm hoping it continues to work, but try manually allocating IP addresses for the machines you are having problems with to prevent DHCP messups.
Open AirPort Utility, select your base station and click Edit and go to Network.
Open System Preferences, go to Network and Wi-Fi in the side menu. Click Advanced, and go to TCP/IP
In AirPort Utility, create a DHCP reservation by pressing the +. Call the description the name of this computer, leave it on Reserve by MAC Address.
In System Preferences, select Configure IPv4: Using DHCP with manual address. Note your current IPv4 address and copy and paste it into AirPort Utility dialogue under IPv4 address. Get your MAC address by clicking the Wi-Fi tab in the System Preferences window, and copy and paste your "Wi-Fi Address".
Close, save, restart, etc.
In AirPort Utility you can add extras, so do it for all devices having problems.
Currently Being ModeratedJan 31, 2013 8:13 PM (in response to Ashsrighthand)
I dont know if you're still having problems, but wouldn't it make more sense for your DSL modem/router to be in bridge mode, and the AirPort using PPoE to authenticate with the ISP and do the routing?