I am trying to figure out the configuration required to vlan tag with vlan 201 all traffic coming from one port and send it out another to the ONT for CenturyLink. I have a Cisco 3750e that I am using, and I am trying to put that infront of a running DDWRT that doesn't support vlan tagging on the wan interface for vlans above 15.
Basically I want to use the 3750e to tag all the traffic so the switch just does the PPPoE authentication for the internet connection and traffic tagging is handled by the 3750e.
Right now, I have two ports setup on vlan 201 with one set as a native trunk (planning to plug that one into the ONT feed from the outside) and the other to go to the modem setup as an access port. I haven't tested this yet, but does this sound right?