A virtual LAN (VLAN) is any broadcast domain that is partitioned and isolated in a computer network at the data link layer (OSI layer 2). … VLANs allow network administrators to group hosts together even if the hosts are not directly connected to the same network switch.

What is the difference between Layer 2 and Layer 3 VLAN?

The most significant difference between Layer 2 and Layer 3 switch is the routing method. Layer 3 switch is capable of inter-VLAN routing and does not need additional device connected like router on-a-stick. … However, Layer 3 switches also maintained a presence at many points within a corporate network.

How does a Layer 2 switch differ from a VLAN?

A layer-2 switch operates at the data link layer, and a router operates at the network layer. … When a VLAN switch receives a frame for another computer, it forwards the frame unchanged to the correct computer.