VLANerottelut

VLANerottelut, short for Virtual Local Area Network segmentation, is a method of dividing a physical network into multiple smaller, isolated logical networks. Each VLAN acts as a separate broadcast domain, meaning that traffic within one VLAN is not visible to devices in another VLAN unless explicitly routed. This segmentation is achieved through the use of VLAN tagging, a process where a specific tag is added to network packets, identifying which VLAN they belong to.

The primary benefits of VLANerottelut include enhanced security, improved network performance, and simplified network management. By isolating traffic, VLANs prevent unauthorized access between different departments or user groups, thereby increasing security. Performance is boosted because broadcast traffic is contained within each VLAN, reducing congestion on the overall network. Network administrators can also more easily manage and troubleshoot the network by segmenting it into logical groups.

Implementing VLANerottelut requires managed network switches that support VLAN tagging protocols, such as IEEE 802.1Q. When configuring VLANs, administrators assign specific ports on the switch to particular VLANs. Devices connected to ports assigned to the same VLAN can communicate directly. Traffic between different VLANs must pass through a router or a Layer 3 switch, which acts as a gateway and enforces access control policies. This allows for granular control over inter-VLAN communication.