I have a Cisco 2800 router and 5 Cisco 3650 switches. \n\nThe network is divided into 9 vlans. A Microsoft ISA 2006 proxy was installed with the inside interface connected to vlan 120 and the outside interface connected to vlan 110. I have been asked to have the proxy server service some additional vlans. \n\nOn an older switch I would have used the switchport multi to add the additional vlans to the port used by the proxy server. What is the best way to accomplish the same thing with Cisco's newer hardware?