P2 on the MX is the "Internet 2" port (port 2) These ports are then connected to each of the Switches FW01-P2 > SW01-P3 FW02-P2 > SW02-P5 which is set to the same VLAN as the port containing the ISP (SW01-P1).   P4 and P5 on the MX are the "LAN ports", which are set to trunk as per usual.    So they go to each of the Core-switches FW1-P4 > SW01-P7 FW1-P5 > SW02-P8   FW2-P4 > SW01-P9 FW2-P5 > SW02-P10   (STP to protect the network from loops) ... View more

I'm at the stage of adding the MX to the dashboard, and that's where I got worried So perfect, thanks for your answer, exactly what I wanted to know 🙂 ... View more