VLAN
A Virtual Local Area Network (VLAN) is a logical segmentation of a physical network, providing isolation, security, and optimized performance for grouped devices.
VLANs enable administrators to divide a single physical network into multiple virtual networks, each with its own broadcast domain. This segmentation enhances security, controls broadcast traffic, and allows flexible grouping of devices by function, department, or location.
VLANs support dynamic configuration, QoS policies, and efficient resource allocation. Implementation involves VLAN tagging, trunking, and inter-VLAN routing to facilitate communication and maintain isolation between segments.
Common use cases include enterprise networks, data centers, and multi-tenant environments where security, scalability, and efficient management are priorities.