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How to Assign Names to MAC Addresses displayed by Airport Extreme and Time Capsule

Last Modified: 2015-12-14
My network starts with a DSL Router (supplied by the ISP).  I have an AirPort Extreme which operates in Bridge Mode and connects wirelessly to the Router.  Under the Airport Extreme I have two Apple Time Capsules (on a different floor in my home) which also operate in Bridge Mode/Extend-a-wireless-network and each connect wirelessly to the AirPort Extreme.

Using Airport Utility, I'm able to see the wireless clients connected to either the Airport Extreme or the Time Capsules (see attached file).

In the past, most of my devices were identified in Airport Utility by their DHCP Client ID name.  Somewhere/somehow the ID of the connected devices has gradually become mixed (see attached image).  Some devices are identified by their IP address, some by their DHCP ID name and some by their MAC address.

I set the name for one of the laptops (via System Preferences > Network > Advanced > TCP/IP > DHCP Client ID) , renewed the DHCP Lease (in case that caused the router to update the newly set DHCP Client ID name) but the device still shows by its MAC address under one of the Time Capsules.  I would have expected that given the fact that the laptop has a Client ID name, that this name would have been reported in Airport Utility under the device it connects to.

How can I get both the Airport Extreme and the Time Capsules to report their connected devices by showing the DHCP Client ID name of the connected devices?

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