Creating trunk vlan on Cisco ASA to Cisco Router


My Cisco ASA terminates at the gateway of my network. Behind the Cisco ASA I have a Cisco Router. I am trying to configure virtual interfaces on the router to my ASA with multiple VLANs. I imagine that I will need to have some sort of trunking involved. Can you advise that If i would need to issue an encapsulation dot 1Q command from the routers interface to the firewall? I tried it, but I feel like there needs to be some trunking involved for this to work.

Hi Floyd,

You can use trunking between the ASA and router. On your router, it’s the router on a stick configuration:

On your ASA, you can do something like this: