I have the named router from an old ISP, and I intend on setting it up as a dumb switch to add to the number of available ethernet ports in my home, as I'm too broke to invest in a proper switch for my homelab.
The device hooked up to VDSL is an Asus DSL-N16 (which, by the way, I love. Most reliable router I've ever had, even if it does run a little warm). So far, I have configured the Zyxel device to be a DHCP relay, after installing the original Zyxel firmware from the manufacturer's site - AATO.11
When I first hooked it up, the Asus router lost all of it's device tree, although I could still access the internet through it. Now, after a restart, it seems to be working, and I can see a device through it. My SIP line has come back up, too, which is notably finicky.
Is there anything else I should be thinking about? Or if it's all now functional, is it worth just leaving as-is?