So the current config, with LAN to LAN, requires me to disable DHCP on my Archer3200. You are saying I can just hook it up as I normally would if I do LAN to WAN (XFi to TPLink) and that should work....

Hi! I am looking to hook up my AC3200 router as a secondary router on a Xfinity Gateway. I dont want it to be just a bridge. I want it to have its own settings and SSID so I can lock down the devices...