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Airport Express will not Join a Network via Ethernet

My Airport Express A1392 will not Join my network when it is wired via Cat6 to my Airport Extreme A1470.


Whenever I try, it crashes my internet (yellow lights on Airport Utility for Internet).


The AE will Join the network wirelessly, and it will Extend the network via ethernet. It just won't Join via ethernet.


I have tried this with 2 different AEs, same results.


Airport Express firmware - 7.6.9

Airport Extreme firmware - 7.9.1


Airport Extreme is in Bridge mode, CAT6 to the modem.


I have tried swapping cables, swapping ports on the Extreme, Soft resets, hard resets, changing the order I turn them on, ad nauseam.


Any insight?


Posted on Feb 17, 2021 4:39 PM

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Question marked as Top-ranking reply

Posted on Feb 17, 2021 5:00 PM

Apple assumes that you want to use the WiFi on the Express, so you still have to configure the Express to provide a WiFi signal during the initial setup. Then, once the Express is up and running.....you can go back in using AirPort Utility and turn off the WiFi function on the Express......so it will operate only as a wired AirPlay device.





Post back if you need step by step.

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5 replies
Question marked as Top-ranking reply

Feb 17, 2021 5:00 PM in response to snash22

Apple assumes that you want to use the WiFi on the Express, so you still have to configure the Express to provide a WiFi signal during the initial setup. Then, once the Express is up and running.....you can go back in using AirPort Utility and turn off the WiFi function on the Express......so it will operate only as a wired AirPlay device.





Post back if you need step by step.

Feb 17, 2021 4:44 PM in response to snash22

The Express does not "join" an Ethernet network......it only "joins" a wireless network.


The AirPort Utility setup "wizard" will configure the Express for you automatically with the correct settings.


What is it that you want the AirPort Express to do? What service will it perform on your network if your goal for the Express is met?

Feb 17, 2021 5:26 PM in response to Bob Timmons

Welp, I had thought I could do that, but didn't realize that the Airport Express location for turning off radios was different than the Airport Extreme.


So now it is working great!! Thank you!


While I have your ear;


Is there any difference on the Airport Express whether I select Create or Extend a wireless network?

Is there any value in me changing the IPv6 to Local Link only? My ISP (Shentel) does not have IPv6.


Thanks!




Feb 17, 2021 5:57 PM in response to snash22

Is there any difference on the Airport Express whether I select Create or Extend a wireless network?


Big difference. "Extend a wireless network" is used only if the Express will be connecting to another Apple AirPort router on the network using a wireless connection. If the Express is connecting to a third party router using a wireless connection, the Express will be configured to "Join a wireless network" automatically.......since the Express will not wirelessly extend a third party network.


If you don't want the Express to "extend a wireless network" on an Apple network, you'll have to manually change the setting to "join a wireless network" after the initial setup.


"Create a wireless network" is always used if the Express is connecting to the main router using an Ethernet connection, no matter whether it is an Apple router or a third party router. If you don't want the Express to provide a WiFi signal, you can turn off the WiFi as an additional manual step.


Is there any value in me changing the IPv6 to Local Link only? My ISP (Shentel) does not have IPv6.


Won't matter if your ISP is not using IPv6. If they were, Link Local Only would be the correct setting to use for the Express.





Airport Express will not Join a Network via Ethernet

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