Multi-VLAN office network using Aruba, D-Link, and TP-Link switches to segment traffic across five isolated broadcast domains: Office (VLAN 10), Production (VLAN 20), Guest Wi-Fi (VLAN 30), Surveillance (VLAN 40), and IP Phones (VLAN 50). Internet traffic flows through a firewall to the Aruba Instant On 1960 core switch, which distributes to nine access-layer switches and four wireless access points serving different VLANs. This architecture isolates critical production devices and surveillance systems from guest traffic, reducing broadcast storms and improving security posture. Fork and customize this diagram on Diagrams.so to match your switch models, VLAN assignments, and device inventory. The design demonstrates best-practice network segmentation for mid-sized offices balancing performance, security, and manageability.