Setup - Base Station
Base Station lets you change the name/password of the base station, select a time zone and one of Apple’s three NTP time servers, enable management over the WAN port (not recommended because of security issues), enable Bonjour, and control the front panel status light. Bonjour, formerly named Rendezvous, is Apple’s implementation of ZeroConf. Intended primarily for use on local networks, Bonjour allows for the discovery of other computers, printers, and services.
There are a number of configurable options on the Wireless menu. You can create a wireless network (default), participate in a Wireless Distribution System (WDS) network, or use the base station to extend a wireless network. WDS, a feature not normally found on Draft N products, allows for multiple access points to interconnect wirelessly without the need for all access points to have a wired backbone link.
Figure 6: Configuration of Wireless Mode
Figure 7: Configuration of the AirPort Extreme’s Radio Mode
You also can set the radio mode. For each operating band, there’s an "n only" mode that restricts access to the AirPort Extreme to Draft N compatible wireless clients. In addition, for each operating band, there is a "legacy" mode that will allow the AirPort Extreme to operate with previous generation wireless technologies. For the 2.4 GHz band, there’s interoperability with 802.11b and 802.11g clients. In the 5GHz band, there is backward compatibility with 802.11a clients.
Figure 8: Configuration of the AirPort Extreme Wireless Security Settings
In the Wireless menu, you can also set or change the wireless security configuration. The AirPort Extreme, in addition to supporting WEP and WPA/WPA2 Personal, also supports authentication to an external RADIUS server through its two "Enterprise" WPA modes.
Wireless options allow you to create a "closed" network (suppress SSID broadcast), enable interference robustness which can help mitigate problems caused by other wireless devices, change the multicast rate, change WPA group key rotation time and adjust power output to 10%, 25%, 50% or leave it at the default 100 %.
Figure 9: AirPort Extreme Wireless Options
Contest #29 Results 
