Two Internet connections, Two network segments, bur different default routes.
I have a TZ670 appliance. Internet provider 1 is connected to X1. Internet provider 2 is connected to X2. There are two LAN segments X0 and X3. What I want to accomplish is for all Internet traffic originating on X0 to route to X1 and if X1 is down fall back to X2. At the same time I want Internet traffic originating on X3 to route to X2 and fall back to X1. Any help would be greatly appreciated.
X0 --> X1 then X2
X3 --> X2 then X1