We have two internet connections, one Comcast fiber and one FIOS. Right now, our default route goes through the Comcast fiber. I've set up two ports on the MS350, each is a trunk that connects to either the fiber or the FIOS. Then there's a VLAN for each with an interface created for each VLAN. VLAN 10 = Comcast fiber - int vlan10 = 10.9.1.2 = actual physical int configured as trunk VLAN 11 = FIOS - int vlan11 = 10.8.1.2 = actual physical int configured as trunk The default route is 0.0.0.0 go to 10.9.1.1 via Comcast fiber, which is working perfectly fine. When the fiber goes out, on our old Catalyst switch, I had a backup static route with a higher metric for 0.0.0.0 that went our FIOS when Comcast went down. I don't see how to do something similar on the MS350. Yes, it's layer 3.
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