About This Architecture

Enterprise campus network with three-tier architecture featuring Palo Alto firewall segmentation across Untrust, DMZ, and Trust zones, protecting web and database servers in VLAN 100-101. H3C S6520 core switches provide 10Gbps redundant interconnect with active-passive HA stacking, feeding dual aggregation layers that distribute traffic across four access switches via VLAN 10-40. Office terminals and wireless APs connect through access layer switches with gigabit downlinks, while ISP connectivity routes through the firewall for centralized security policy enforcement. This three-tier design delivers fault tolerance, VLAN-based segmentation, and scalable bandwidth from core to edge. Fork and customize this diagram on Diagrams.so to match your campus topology, add additional DMZ services, or adjust VLAN assignments. The stacked core switch design eliminates single points of failure while the aggregation layer enables independent scaling of access domains.

People also ask

How do I design a secure three-tier enterprise campus network with firewall segmentation and high availability?

This diagram shows a production-grade campus network using Palo Alto firewall to segment Untrust, DMZ, and Trust zones, with H3C S6520 core switches in active-passive HA stacking for redundancy. Dual aggregation switches distribute traffic across four access switches via VLAN 10-40, connecting office PCs, wireless APs, web servers (VLAN 100), and database servers (VLAN 101) with fault tolerance an