VLAN ID

A VLAN ID (Virtual Local Area Network Identifier) is a unique number assigned to a specific network segment within a physical network. It allows multiple virtual networks to coexist on the same physical infrastructure, improving organization and security. For instance, in an office, different departments can communicate over their own virtual networks without interfering with each other, even though they share the same physical connections. This separation helps manage traffic, enhance security, and optimize performance, ensuring that data from one department remains isolated from another while still utilizing shared resources effectively.