So looks like it was NAT that was kicking my butt. Disabled it and was able to accomplish what I was needing. Now if I can figure out how/if I can do it on a ER605.

Greetings all. I apologize if this asking too much, but I am trying to connect two TP-Link routers together(wired) and create two LANs. I have the primary(Router1) that is connected to the internet...