I assume that the AirPort Extreme is operating correctly and that you have AirPort Utility 6.x installed on your Mac. Close AirPort Utility if it is open.
Temporarily, unplug the Ethernet cable at the WAN "O" port of the AirPort Express
Hold in the reset button on the AirPort Express for 9-10 seconds and wait a full minute for the Express to restart to a slow, blinking amber light
Connect the Ethernet cable to the WAN "O" port of the AirPort Express
Click the AirPort icon at the top of the Mac's screen and wait a few seconds for New AirPort Base Station to appear, just below that, click on AirPort Express
AirPort Setup will open automatically and take a minute to analyze the network
AirPort Setup will announce that the AirPort Express will be configured to "extend" the AirPort Extreme network
Type in a device name for the Express....example, AirPort Express, and click Next
AirPort Setup will take a minute to configure everything for you. When you see the message of Setup Complete, click Done.
That's it. Not too dfficult, I would think. Other than typing a device name for the Express, everything else will literally happen automatically, as I said.
Post back on you results
AirPort Utility on your iPad will work exactly like I described, but you will need to start the process by tapping on the Settings icon on the iPad, then tapping on Wi-Fi.
You will see a setting to Setup a new AirPort Base Station there. Everything else will work the same as I mentioned, assuming that you have AirPort Utility installed on the iPad.
Worked just as described. Just to note, while I was waiting for your reply I tried to set it up using the PC airport utility. It looked like it would work, but when it restarted, it didn't work. Setting it up with the ipad worked flawlessly. Thanks again. Apple should consider revising the whole "extend"option to "extend wirelessly" to avoid confusion.
I have the setup you describe...
With the "roaming" will the extended airport express also enable 2.4G and 5Ghz Wifi networks.
Currently when I am out of range of the primary Airport Extreme I only see the 2.4GHz network.
I am try to setup a extended network where both 2.4Ghz and 5 Ghz will work.
thanks in advance
My desired set up is close to this discussion
Where the incoming Router connections are all wired. I give Lion a manual IP to try so not have multiple DHCP's. The Lion is set-up to share Wifi a d a little grey arrow shows up. The set up works perfectly on the resulting wireless network throughout the house.
But the AE refuses to pick up the signal and pass out a wired connection to Box. I figure the AE needs to be in "extend" mode, again to avoid multiple DHCP's. looking at the Lion console and if config it seems the AE is being served an IP address, but seems to not be forwarding it along the wire. Any suggestions?
So I followed directions, and it seems to work, but how do you know which network you are on? If I hold the option key and click on the Airport icon, it gives BSSID for the main Airport. Will this be the case no matter which one it is connected to, because they are in bridge mode and default to the master? I just want to make sure I'm maximizing throughput of wireless computers by making sure the closest Airport is the one it is connecting to.
Does that make sense?
Thanks, Bob. Yes, I sit here with an iMac and a MacBook Air, they are right next to each other, yet on different networks. One Airport (Extreme) is in the same room, the other (Time Capsule) is on another floor. Since they share identical names, how do you force a device to join the closest/strongest signal?
how do you force a device to join the closest/strongest signal?
Try powering off one or both devices, etc. to see if you can get them connected to the closest access point.
You may need to completely power off the entire network and then power it back up again in sequence, modem first.
Wireless can do some crazy things at times.....nature of the beast, I am afraid.
I realize your post to extend an Apple Extreme network using the Airport Express is almost a year old but your instructions worked perfect. I have 3 Amped Wireless repeaters, 2 of the REA20 and 1 of the SR10000 serving 2 large buildings at home that works very well but I was having fits trying to get the Express set up as an extender for my wife in the front room via ethernet to a new Apple Dual Band Extreme.
Thanks for the clear instructions..