Enterprise multi-branch network with hierarchical three-tier design connecting HQ, New York, Chicago, and Dallas offices via WAN/MPLS and VPN. Traffic flows from Internet Gateway through Palo Alto firewall and F5 load balancer at HQ, then distributes across Cisco core and distribution switches to department VLANs (IT, Finance, HR, Sales, Operations) and internal servers (AD/LDAP, file, backup, monitoring). Branch offices use pfSense firewalls and VPN clients to tunnel back to HQ, maintaining consistent VLAN structure across all sites. This architecture demonstrates enterprise-grade segmentation, redundancy, and centralized security policy enforcement critical for large organizations managing sensitive departmental data. Fork and customize this diagram on Diagrams.so to match your branch count, firewall models, and routing protocols.