Hello All,
I was hired on with a state.. Now its been awhile but I can't remember how subinterfaces and VLANS all tie together!
Now correct me where I'm wrong (please), but VLANS are created on switches first correct? When you create a VLAN on a switch you don't need a default gateway or ip address because the VLANS are local to the switch. If you want intervlan routing you need a router. You then setup a trunking port between the switch and router (ISL, 802.1Q). Now in the router you can create VLANS and here you inter the ip addresses of the subnet or default gateway correct? This is where I get confused because for what reasons do you need subinterfaces? How do they tie into VLANS and what would be the logical flow of data?
Anyhelp will be appreciated!
