About This Architecture

Enterprise campus network with Palo Alto PA-5200 Series firewall protecting DMZ and intranet zones, dual H3C S6520 core switches providing redundancy and VLAN segmentation across management, user access, web, and database tiers. Traffic flows from ISP broadband through the firewall to core switches, then distributes via L3 aggregation switches to access layer devices serving PCs, wireless APs, and application servers. This three-tier architecture with redundant core-to-distribution links ensures high availability and fault tolerance for mission-critical campus operations. Fork and customize this diagram on Diagrams.so to match your organization's switch models, VLAN assignments, and security policies. The design demonstrates best practices for separating trust zones, implementing load balancing with WAF protection, and maintaining network resilience through dual-path routing.

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How do I design a secure, highly available enterprise campus network with firewall protection and VLAN segmentation?

This diagram shows a three-tier campus network using a Palo Alto PA-5200 firewall to separate untrust (internet), DMZ, and trust (intranet) zones, with dual H3C S6520 core switches providing redundancy and cross-links. VLANs segment management, user access, web, and database traffic across aggregation and access layers, while load balancers and WAF protect application servers.