We have Internet service from two providers (Fios/Comcast) Each service includes 5-Static IP address: xxx.xxx.xxx.10 - 14 yyy.yyy.yyy.100-104 Which connect to our internal LAN: 192.168.1.xxx I would like to segregate traffic between services, so that that Email traffic is on a different IP from users accessing the Internet. I would also like to have fail-over from the primary (fios) to secondary (comcast) (I don't need load balancing, the Fios connection is plenty fast) My plan is to take a 16-port switch and plug the two Ethernet connections coming from the providers into it. From there I'll attach: Watchguard Dual WAN Firewall Users accessing the Internet WAN1 Gateway: xxx.xxxx.xxx.10 WAN2 Gateway: yyy.yyy.yyy.100 Internal: 192.168.1.1 configured with fail-over from WAN1 to/from WAN2 Fios Supplied Router (or suitable replacement ) Email Server Gateway: xxx.xxx.xxx.11 for Email Internal: 192.168.1.2 Comcast Supplied Router (or suitable replacement) Email Server fail-over (set in DNS and on the server) Gateway: yyy.yyy.yyy.101 Internal 192.168.1.3 My first question is, will this work? Normally you would have the Internet connection from the provider going directly into the router. Can I put a switch in between them? If so can I attach two Internet connections and three routers all to the same switch? Thanks.