Extend your AirPort Network with AirPort Express
Pages: 1, 2
Finally, the AirPort Express Assistant will automatically configure the base station to use the new AirPort Express to extend its range (see Figure 10).
![]() Figure 10. Completing the configuration. |
That’s it! After a brief restart, the AirPort Express should display a green light (see Figure 11) and you are now ready to go!
![]() Figure 11. AirPort Express ready to go! |
AirPort Express functionality is transparent to the user – the wireless network names of both the AirPort Extreme and AirPort Express are identical.
Examining the Configurations
If you are the adventurous sort who wants to understand what goes on behind the scene, however, you can examine the various settings set by the AirPort Express Assistant using the AirPort Admin Utility application (located in the Applications/Utilities folder).
If you have configured the AirPort Express as explained in the previous section, you should now be able to see the two base stations as displayed in AirPort Admin Utility (see Figure 12).
![]() Figure 12. Using the AirPort Admin Utility program. |
Let’s first examine the Base Station (10.0.1.1). This Base Station is the AirPort Extreme base station connected directly to my cable modem. Notice that in the WDS (Wireless Distribution System) tab, the option “Enable this base station as a WDS” is checked and the “main base station” option is selected (see Figure 13). This enables the AirPort Extreme base station as a main base station for other remote base stations.
Basically, there are three options available for WDS:
- Main base station – the base station directly connected to the Internet.
- Remote base station – connects to a base station and thus extends its range.
- Relay base station – acts as an intermediary for a main base station and other remote base stations.
Since I also want my wireless clients to be able to connect wirelessly to my AirPort Extreme base station, the “Allow wireless clients on this base station” is checked.
To add more remote base stations, you can click on the “+” button. The MAC address (00:11:24:08:af:e9) shown in Figure 13 is the MAC address of my AirPort Express.
![]() Figure 13. Configuring the AirPort Extreme base station as a main base station. |
On the AirPort Express (10.0.1.232), you’ll notice that under the Internet tab, the “Connect using” option is set to AirPort (WDS). The MAC address (00:03:93:ef:29:be) specified is the MAC address of the AirPort Extreme base station. You also need to configure the IP address of the AirPort Express, either manually or by DHCP (see Figure 14).
![]() Figure 14. Configuring the AirPort Express for WDS. |
Under the Network tab, notice that for wireless network extensions, you have to uncheck the “Distribute IP addresses” option (see Figure 15).
![]() Figure 15. Disabling DHCP for the AirPort Express. |
Finally, in the WDS tab, select the “remote base station” selection for the “Enable this base station as a WDS” checkbox (see Figure 16).
![]() Figure 16. Configuring the AirPort Express for WDS. |
Final Thoughts
The AirPort Express is a cost-effective way to extend the range of your wireless network. While Apple claimed that the AirPort Express’s WDS is only compatible with an AirPort wireless network, there have been reports of successes with non-AirPort wireless network. For now, I am just happy that I am able to access the Web in my bedroom!
Wei-Meng Lee (Microsoft MVP) http://weimenglee.blogspot.com is a technologist and founder of Developer Learning Solutions http://www.developerlearningsolutions.com, a technology company specializing in hands-on training on the latest Microsoft technologies.
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Showing messages 1 through 10 of 10.
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128 bit Security on Extreme Disables Express
2005-02-25 20:31:48 jperl [Reply | View]
Have you had this problem?
When I configured my Airport Express to extend my existing Extreme-based wireless network, I read that I needed to set up the Extreme base station as a WDS. I went to that configuration panel on the Extreme Base station and learned that I had to turn off WPA Security, so I did. Express worked fine in that situation.
However, being concerned about security, I went back and created a 128-bit ascii security code. When the Extreme base station restarted, the Express lost its connection and never seemed to be able to get it back unless I disabled wireless security.
Anyone know a solution?
Thanks in advance.
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switching profiles
2004-10-29 02:20:34 virtualperson [Reply | View]
Thanks for the article, I was just thinking about setting this up for a client, however what if you would also like to take the Airport Express (AE) on the road with you for wireless in your hotel room?
I understand there is profiles that you could save as say Kitchen (WDS config) and Hotel (DHCP config), but as a follow-up article could I suggest a walkthrough of how to script toggling between these two profiles with say a simple double-clickable AppleScript application that we could download and self customize?
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Software Conflict
2004-10-25 07:35:30 divirgil [Reply | View]
Ever since I installed an AirPort Express (software) on my existing AirPort Extreme Network I have been unable to access either points via the AirPort Admin Utility.
The network is working fine under the settings I entered priginally. I have great wi-fi reception now. But I can not re-configure or change my base station now...
The AirPort Admin Utility opens and displays both modems. But when I click on either to configure it... it simply asks for the password and when I enter it nothing happens. I can not configure either device with the AirPort Admin Utility.
I can still configure the AirPort Express via the AirPort Express Assistant, but I can not configure it with the Admin Utility. What's worse, is that I can no longer configure my AirPort Extreme base station at all.
I tried removing the AirPort Express from the network... but the Admin Utility still hehaves the same... asks for the password but never lets me in.
I guess my next step is to remove the AirPort Express Software from my PB and see if the Admin Utility becomes utile again. But has anybody else heard of such a conflict??
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WEP-only is a major limitation in my view
2004-10-14 21:49:48 onehunglow [Reply | View]
WDS doesn't support WPA. Out of the box WPA, i.e. a secure WiFi network, was one reason I invested in my Airport Extreme.
That WDS doesn't support WPA makes it useless to me.
What is it about WPA that forced this limitation - or have Apple just not got around to implementing it yet ? -
WEP-only is a major limitation in my view
2004-12-23 15:52:18 fsb [Reply | View]
an article on ars-technica says: "One note: when using the AirPort Express as a WDS, you are limited to either using 128-bit WEP or turning off security altogether. This was not mentioned on the AirPort Express pages on apple.com, although it is addressed in the manual. WPA is generally not supported over bridged connections on WiFi products due to the fact that WPA encrypts the MAC addresses which WDS relies on for communication. Keep this limitation in mind when using the Express as a bridge." makes sense; if wpa encrypts addresses, a bridge cannot possibly work.
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Setup software
2004-10-13 11:26:23 psd [Reply | View]
i bought one of these yesterday, amazed how it worked out of the box as an AP. only downer thus far is that i had to install some OSX or Windows software to configure the thing. i expected a web interface on a well know IP address, e.g. 10.0.0.1 (yes, mine issued me with a class A network, so presumably it can support some 16 million odd users :-)
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This configuration as Ethernet to Wireless Bridge
2004-10-13 06:08:08 FReig [Reply | View]
I have been going through different forums and docs to find out if this configuration you describe, extending an existing Aiport Extreme Base Sation signal, allows me to use Airport Express Ethernet Port as a LAN port for hooking up an Ethernet wired device (Xbox, PC, etc.)
There is some documentation over at Apple documenting this as possible http://docs.info.apple.com/article.html?artnum=108038#4 but it would be great if you could confirm us that this actually works on your setup.
My doubts are if you can use Airtunes and Printer Sharing with this Setup or if it only works in Client Mode as well as the LAN port issue.
The best way would be to try it out myself, but I want to be sure before actually buying Airport Express.
Thanks in advance, Fernando













What a snap to set up!
The Airport Express has already paid for itself in making hotel connections go wireless. Now it can do the same at home.
And I was about to spend $100 on an antenna for my Airport Extreme..
Cheers
Sean Walmsley