Initially, I started designing this project using the Meraki MX-250 at the central site and MX-105 at the remote offices. After receiving feedback from the Meraki community and the limitations that were pointed out, I thought it would be best to avoid the headache before it happens. I'm now considering designing with the Secure Firewall 1200 series (FTD). Does anyone know if it's possible to have three links from different ISPs in a Secure Firewall 1200 HA architecture and still design a SD-WAN network over this underlay of three distinct ISP links?
