Multi-floor enterprise campus network spanning Levels 1, 3, and 4 with FortiGate 121G core security, redundant L3/L4 switches, and distributed access points across eight zones. Traffic flows from WAN through M1 2Gbps ONT and WAN Switch to the Fortigate 121G firewall, then to L3 Core Switch and FortiSwitch infrastructure serving each floor. Three NAS devices provide centralized storage, while 20+ access points deliver wireless coverage to executive, operations, finance, IT, and compliance zones. This architecture demonstrates enterprise-grade network segmentation, redundancy, and security posture for multi-tenant office environments. Fork and customize this diagram on Diagrams.so to model your own campus topology, adjust VLAN assignments, or integrate additional security zones.