Ethernet connects but Wifi does not

You need to delete the other wireless networks around you in your neighborhood 🙂.

The symptoms you are describing point to wireless interference from another network near you, a new wireless security system at the neighbors, or even a nearby cordless phone.

Some time ago, my network would suffer from intermittent sudden slow downs and disconnects. It was only by accident that I discovered that my neighbor...across the street....could literally knock me off my wireless network if he was in his front yard talking on his cordless phone.

All you can really do is keep trying different wireless channels to see if you can find some clear airspace or you run out of channels. If you happen to have cordless phones in your own house, you might try turning them all off for a few hours to see if that makes any difference in your wireless performance.

AirPort Utility - Manual Setup
Click the Wireless tab to get to the wireless settings page
Keep notes on which channels seem to work better than others and then concentrate on the best channels to narrow it down even further.

Sorry that you have what appears to be a defective device.

It would have been helpful and saved us both some time if you had included the additional information about what you had already tried in your original post.

Please remember that while something may seem obvious to you on an issue that you've spent some time on, we only know as much as you tell us.

I've been having exactly the same problem (can connect Ethernet cabled devices but not WiFi devices to the internet through the Airport Extreme (mine is the gigabit N generation, not the current one with dual SSID support).

I may have stumbled upon a solution. In the Network preference pane on my laptop, the DNS listing for my home SSID was the same as the LAN IP address of the router itself!. I changed it to Google's DNS server and brought WiFi internet access back to life instantly.

Exactly the same was the case on my iPhone 4 under Settings>Network>DNS (set to the device of my router). Once again, manually entering Google's DNS server (8,8,8,8) brought internet connectivity to life on the iPhone, routed through the Airport Extreme router.

My AEBS has developed the same problem.
Ethernet fine. Wifi, although it's broadcasting, and I can connect with multiple devices, has virtually no bandwidth and is unusable.
No apparent interference. In fact I have a spare cheap N router, and I swapped it for the AEBS.
With the same settings, (SSID, channels etc.) it works fine.
The only thing I can't replicate is the IP address. The AEBS defaults to 10. etc, whereas the DLink uses 192.168.

If I try and change this on the AEBS, it will not restart and hangs on the orange light, and cannot be detected by Airport Utility. If I power it down, it will restart with a completely different IP address even though DHCP is set to 192. etc.

Thing is, this just started happening. I had made no adjustments. It used to work fine on 10.0 addresses.
I've tried the suggestions on this post. No joy.
I'm convinced it's an IP address/DHCP problem, but can't figure out what's going on.

I'm guessing some kind of hardware failure with the AEBS?

Jarndyce... same problem here! I hope someone answers, this just started today!

exactly the same problem here since today!

I've tried everything I can think of with this.
Ethernet is still fine. Wifi useless.
If I make any changes in airport utility and the AEBS restarts, it just hangs on an orange light and AU doesn't detect the AEBS.

I think it could be a hardware problem, but I'm sure there's a link to IP addresses.

Either way, I'm not getting anywhere. Anyone have any suggestions?

I'm still trying with this.

After trying hard and factory settings resets, I'm still getting no joy.

The main problem is that when alterations are made in airport utility, the AEBS reboots but hangs on an orange light. AU then cannot find the AEBS. If I power down the AEBS and turn it back on, it does not retain the settings I've changed.

Perhaps I should start a new thread for this restart issue?

Bump.

Same thing happened here.

Reset the AEBS a couple times. Restored. Still the same problem. Can be seen by other computers on the network, but the connection times out when trying to hook up.