I have a mix of Airport Extreme and Airport Express base stations, a switch and a modem/router with VoIP and other features which require to keep the modem configured as a router. Of course the modem/router is connected to the switch and so should be all the base stations.

Resetting the AirPort Express | Macworld The light will flash yellow and you'll have five minutes to make changes before the AirPort Express reverts to its previously saved configuration. Hard Reset With the AirPort Express plugged into AirPort Extreme showing 'Device Not Found'? Here's a fix Unplug your AirPort Extreme, and wait 10 seconds. Plug it back in, and connect to the WiFi network as soon as possible, then immediately go to the AirPort Utility. The AirPort should appear and be manageable (by clicking on it) for a brief period—quickly click on it, click Edit, then clear out any Apple IDs in the 'Back to My Mac' section. network - Configuring AirPort Extreme with Existing Router The airport extreme should be connected as just a device with the cisco router handling DHCP and NAT. in the airport configuration go to the Network Tab and click the double headed arrow under Router Mode set it to "Off(Bridged Mode)

Aug 16, 2019

How to increase your Wi-Fi coverage with an extra AirPort

Airport Extreme Help Guide – Ting Help Center

See a graphical overview of your Wi-Fi network and devices. Change base station and network settings, or manage advanced features such as security modes, wireless channels, IPv6 configuration, and more. AirPort Utility works with all Apple 802.11n and 802.11ac Wi-Fi base stations, including AirPort Express, AirPort Extreme, and AirPort Time