About This Architecture

Enterprise network zone topology with Palo Alto NGFW separating untrusted internet from DMZ and trusted office networks across three switching layers. ISP Internet connects through Palo Alto Firewall (NGFW) to Web Server VLAN 200 and Database Server VLAN 201, then to H3C S6520 core switches in HA configuration. Core layer feeds dual L3 routing aggregation switches, which distribute traffic to four L2 access switches serving PCs and wireless APs across the trust zone. This architecture enforces security boundaries, eliminates single points of failure via redundant core and aggregation paths, and scales access capacity across multiple switch stacks. Fork and customize this diagram on Diagrams.so to match your firewall rules, VLAN assignments, and switch models. The dual-core HA design ensures business continuity during maintenance or component failure.

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How do I design an enterprise network with DMZ segmentation, redundant core switches, and Palo Alto firewall protection?

This diagram shows a three-tier topology where Palo Alto NGFW separates internet traffic from DMZ servers (VLAN 200/201) and trusted office networks (VLAN 10-100). Redundant H3C S6520 core switches in HA configuration eliminate single points of failure, while dual L3 aggregation switches and four L2 access switches distribute traffic to endpoints and wireless APs.