Virtual Local Area Network (VLAN) is an improvement on the traditional Local Area

Networks (Lacoste, 2004). VLAN allows network devices located on different LAN segment to

communicate as if they were physically connected. The traditional Local Area Network

comprised of interconnection of hosts in a network using hubs and repeaters which were prone to

collisions. Collision occurs when two people try to send data at the same time. In a traditional

LAN, if a collision occurs the data is lost as the repeater and hub tries to recover from the

collision and therefore, the senders will have to resend data again. Such kind of LAN is

commonly known as the collision domain because the collisions remain within the LAN. Bridges

and switches are therefore used to avoid collision. This is because they will allow broadcasts and

multicasts through the network. Broadcasts and collisions in LAN depend on how the devices are

physically connected to each other…