No, only one of the nodes needs to be connected to your Internet Service provider's modem, gateway or whatever your service provider calls it. That's the whole point of Mesh WiFi basestations like the Linksys Velop, that is, they create a continuous expanded bubble of WiFi signal by talking amongst themselves via a back channel.
That said, they can also be inter-connected with an ethernet cable between nodes which takes over that back channel role with certain advantages. However, the majority of buyers of Mesh basestations do so because they want the convenience of not having to string ethernet cables between nodes. I'm one that did but I'm sure I'm in the minority.
By the way, I would not consider buying just one Mesh device as your question infers you might be considering. Plan on Buying 2 or more depending on the area you're trying to cover.
- Answered by William M from Germantown
- Flag as inappropriate Answer (If I get two nodes, does each need its own Ethernet connection, or can one Ethernet connection be picked up and amplified wirelessly by the other?)