Definition
A Virtual Local Area Network (VLAN) is a mechanism for logically dividing one network infrastructure into separate local networks.
Human Explanation
Devices can belong to different logical networks even when connected to the same physical switch.
Why it Matters
VLANs improve network organisation and traffic management and can support security controls.
Conceptual Boundary
A VLAN does not replace a Firewall or complete security segmentation. It is a tool that supports logical network separation.
Practical Perspective
Logical network separation often simplifies management more effectively than expanding physical infrastructure.