Hey Guys,
So I'm designing a pretty hefty home lab with a few servers and a layer 3 switch. I was going to have an outside Vlan (or a routed interface, havent decided yet) on the same subnet as my ISP gateway out to the internet. The problem with this is that the crappy SMCD3GNV modem/router firmware does not let me add routes back to the other vlan's on the switch. Meaning if I have a vlan dedicated to workstations, it will be able to route out, but the device will have no clue where route the packets back to the workstation subnet/vlan.
Now I read somewhere that "bridged" mode could help, and my impression of bridge mode is using the modem/wifi router as a wireless access point instead of a router. This would work nicely with my layer 3 switch, however I'm not sure exactly how to keep using it as the gateway and telling my switch to route packets toward the gateway interface on this ... access point now? Doesn't sound like exactly what I need.
I was thinking of ways to use NAT, as I remember I came across this problem before and I used NAT to place I believe a gateway from each vlan onto the outside subnet range, i.e. the vlan interface for workation vlan, nated to a ip address on the outside network, so that the isp gateway device didn't actually have to route packets, it just sent them layer 2. But I'm not sure if this completely possible with a layer 3 switch, and if this is actually what I did.
Let me know some suggestions on getting around this - worse comes to worse I'll just get a used wifi router and a modem from comcast, and seperate the two pieces of hardware.
cicso switch in use: 3560g
Thanks