AirPort Utility makes it simple to extend the range of an 802.11n network if you’re connecting another 802.11n base station or a Time Capsule. Connecting two 802.11n devices greatly simplifies the WDS setup process.
Open AirPort Utility and select the base station or the Time Capsule that will connect to the Internet.
Click Manual Setup. Enter the base station password if necessary.
Click AirPort in the toolbar, and then click Wireless.
Choose “Create a wireless network” from the Wireless Mode pop-up menu, and then select the “Allow this network to be extended” checkbox.
Next, select the device that will extend this network, and then click Manual Setup. Enter the password if necessary.
Choose “Extend a wireless network” from the Wireless Mode pop-up menu, and then choose the network you want to extend from the Network Name pop-up menu.
Enter the network and device password if necessary.
If your base stations are connected using Ethernet, see “Using multiple base stations in an Ethernet network” to extend the range of the wireless network.
If you are extending the range of a wireless network that’s using 802.11g or 802.11b, check the Apple Support Website.