What is the VLAN number eg. VLAN 100?

A VLAN (Virtual Local Area Network) number, such as VLAN 100, is a unique identifier assigned to a specific VLAN within a network. It allows for the segmentation of network traffic, improving security and performance by isolating different network segments. VLANs can range from 1 to 4095, with certain ranges reserved for specific uses, such as VLAN 1 being the default VLAN on many devices. Each VLAN can have its own set of policies and configurations, enabling more efficient network management.