hi! i've a few sites with setup as option 1 in the diagram attached, whereby i've a WAN vlan with FW, Telco MPLS router and an ASA(backup link) connected to this WAN VLAN. The FW and ASA will have a route back to the internal netowk of 10.1.1.0/24 and 10.1.2.0/24 through the WAN GW 10.1.1.1. I also have a internal cisco router for the inter-vlan routing.
My question is can i have something like option2, whereby i've a flat network of just 10.1.1.0/24 to achieve what i've in option1?. This network serve as a only lan for the wan equipment and data lan. Is this setup possible? If that's the case, what woud the return route for the FW and ASA be? can i use 10.1.1.3 of the FW and 10.1.1.4 of the ASA as the GW respecively to go to 10.1.1.0/24 network? eg. ip route 10.1.1.0 255.255.255.0 10.1.1.3 for FW, and 10.1.1.4 for ASA?
What addditonal configuration is required if option 2 is achievable?
Thanks.
