Switch trunk link carrying multiple VLANs across two managed switches using a single physical connection. SW1 and SW2 are interconnected via trunk ports (Eth 1/1 and Eth 1/24) that encapsulate traffic for VLAN 10, VLAN 20, and VLAN 30, enabling inter-VLAN communication while maintaining logical network segmentation. This trunk configuration reduces physical cabling requirements while preserving broadcast domain isolation across the LAN. Fork this diagram to customize port assignments, add additional VLANs, or model failover trunk links for redundancy. Trunk links are foundational to scalable enterprise network design and support dynamic VLAN membership across multiple access switches.