@dkw92 Connect all three Deco in daisy chain mode, using Ethernet cables that connect Satellite Decos to the switch: If Satellite Deco can't establish Ethernet link to Main Deco (and to be sure, then...

@OMGChris If you go directly from modem to switch, you can only manage hardwired to switch devices through modem/router management interface. That might not be an ideal solution for you, but if you...

@OMGChris There are two options to try: 1. Swap Main Deco with one of Satellites to see if it is Main Deco hardware issue. You can do that by following the process of promoting Satellite to Main...

@Saadyc It may help if you tell names of Deco models you have and switches you use. Meanwhile, check this document: General questions about Ethernet Backhaul feature on your Deco

@Mase1973 Deco S7 does not support VPN functionality.

@Mase1973 S7 can't do that. VPN functionality appears in firmware 1.7, yours is 1.5 - two iterations behind. These are Deco models with VPN functionality (the list may not be complete): Deco W3600(...