Wired backhaul and Linksys Velop Wi-Fi mesh networks

The Linksys Velop MX4200 mesh Wi-Fi router supports wired backhaul between nodes. However, the information you’ll find online about how to set it up is either outdated, or confusing, or both.

When you use Google to find info about it, many of the top hits won’t help you very much. In particular, there is a top-rated reddit post from a few years ago that is filled with incorrect information (maybe it used to be accurate?) And, surprisingly, even the Linksys support site has conflicting advice. (I’m not linking to any of these so as to not reinforce their dominance in search results.)

Here’s what worked for me:

Add the child as a wireless node first. Let the system perform any software updates, etc.
Connect the ethernet cable to the Internet port on the child node. The device will automatically adjust its settings to use wired backhaul to the parent.
It’s OK (if not, perhaps, required) to connect all the children to an unmanaged switch. Daisy-chaining is not necessary. (Apparently some managed switches cause problems, see this support article for things to try.)

You’ll know that each child is set up correctly by the way it is displayed in the Linksys management app. Signal strength will indicate it is connected via ethernet, and “Connected to” will show the parent node. (Called “Master Bedroom,” in the screenshot below.)

That’s it, you’re finished. Bravo to Linksys for making this “just work,” now if only we could clean up the bad info lingering around on the internet.