Who never heard of Apple AirPort Extreme? This post is specially catered for you! Have taken the Apple AirPort Extreme for tests, we decided to answer several questions at once:
1. Is there any sense to overpay for 802.11n support?
2. A real speed of transmission via 802.11n?
3. Is Apple AirPort Extreme qualitative and functional?
I’m going to compare functionality of AirPort Extreme with AirPort Express and a wireline network. Who owns Apple Airport Extreme? The situation: the two above-mentioned access points are connected to the net via Planet and 3Com routers. There’re around 20 computers in the net, 6-8 out of them are linked up with WiFi. The rest of them are connected with a high-speed twisted-pair cable. Quite acceptable conditions for small networks. I set up connection between these nets and the notebook Dell with WiFi Adapter Intel 4965.
I don’t see a reason to test it very profoundly. Generally, gadgets are created to be used in small offices and at home, where there’re some clients of various types and several walls and obstacles that are in the way of signals.
Apple Air Extreme
A nice white flat box made is the perfect wireless solution for home, school, and business. Traditional Apple style. There is a transmit indicator on the front panel of the Apple Air Extreme, and the important thing about the back panel, is that there’re 3 GB LAN-ports, a LAN-port for a modem, USB-port.



Previous series were supplied with 100Mbit ports, but now they are rarely met.
Designers created three built-in antennas for WiFi 802.11n support. A user can choose just one of three frequencies in the range from 5 GHz to 2.4 GHz due to a two-way radio.
Apple is famous for its style and cutting edge designing. Apple AirPort Extreme is no exclusion. Engineers of Apple supplied AirPort Extreme with the support of WPA/WPA2, WEP (40-bit, 128-bit, RADIUS), Mac filtration system, and DHCP, NAT, PPoE, VPN Passthrough, DNS Proxy, IPv6 and SNMP.
Software package for Mac OS and Windows are supplied as units. Access point is realized by means of a special program - wizard.





The wizard helps users to resolve hardware conflicts, set up data protection, and adjust network options, etc. IMHO, the application is functional and easy-to-use, and operates better than the web-interface.
Among a wide variety of settings one can choose the frequency (5 GHz or 2.4 GHz) and firmly set the type of a network (b, g, n).
In-built USB-port may be used to connect a Flash-disk or a printer. AirPort’s built-in print-server allows us to use the printer directly via the net. The most important point, however, is that Mac users shouldn’t customize the printer. The Wizard does it for them.
AirPort Utility automatically detects the networked USB-HD or flash disk, offering to define a password and access rights. The program uses the protocol Apple Bonjour (French influence?), that considerably makes the work easier and speeds it up.




Access Control
AirPort Extreme is in close proximity to the client (no more than 7 m). Let’s test it.

There’s only one client in the net. The data is transferred to the computer (the 100Mb netcard).

With the 1Gb netcard.

The system is purely experimental. Data transfer goes to the AirPort Extreme, then to router, and reaches the AirPort Express and the client with the netcard (operating according to 802.11g standard).
It goes without saying, that synthetic tests show striking results. It was found, that the 100Mb receiver transmits data better than the 1Gb one. By the way, the experiment was tested with the use of SiSoftware Sandra Professional Business XII.SP1.
And for consideration let’s see the work of AirPort Express.

An unloaded net, the 1Gb netcard.

6 clients connected to the AirPort Express, the same computer.

6 clients connected to the AirPort Express, data transmission between these 2 computers.
On the balance, it should be noted that we answered the asked questions. Is there any sense to overpay for 802.11n support? Yes, it is! At worst, you’ve got doubled performance and speed. Who owns Apple Airport Extreme, one should be very lucky!
The average transmission speed is ensured by a stable transfer of DVD-video via the net in case of connected several clients. Therefore, you can set up your own wireless home hub.
The Apple AirPort Extreme proved itself on the good side. The gadget is packed nice, looks extremely well. During the tests it hung only one time.