Creating trunk vlan on Cisco ASA to Cisco Router

(FLOYD B) #1


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.

(Rene Molenaar) #2

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: