|If the following is your goal:|
I am trying to get the two routers and the extra machine to all see each other.
This is easily accomplished by setting up as follows:
Internet >> (one) SOHO Router >> Switch >> client PC's
The one router not only would provide a firewall and some security from intrustion (from the internet) for all clients behind it, but, it would also provide NAT and DHCP for them as well.
This would put all clients in one LAN allowing them all to communicate with each other as well as giving them internet access.
In my scenario above, all PC's plug into the switch.
I have to ask though, is this a managed switch and if it is, how do you presently have it configured?
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.