The only reason i can think of as to why i come up with this stuff is because i have a tendency to try and make things work outside of the box. The question is as follows: If you have 3 switches connected, we will call them left, right and middle. If you assign all ports on left to vlan 2, middle to vlan 3 and right to vlan 4 and you connect them together will they work. I say they will, (have yet to take the time to test). Ok now all of these switches are L3 and you ip each vlan (not the interface but the vlan itself) where all the switches reside in the same subnet but on different vlan facing ports. Will they route? Again i say yes they will, anyone care to venture a stab at this one?