What is VLAN (Virtual Area Network)

 Name : Aldini Vida Steivia

Class : TBI-5C

The use of computer network technology as a data transmission medium is growing. The requirement for shared network resources, including software and hardware, has resulted in a number of advancements in network technology. Along with the growing degree of requirements and the increasing number of network users who desire a type of network that can deliver the best outcomes in terms of efficiency and network security. Various parties are continuing to improve based on these requests. The concept of Virtual Local Area Network (VLAN) originated by leveraging numerous approaches, particularly subnetting techniques and using better hardware (including switches), which is intended to produce better outcomes than Local Area Network (LAN).

So What is VLAN?

VLAN is a network type that is not confined to physical locations, unlike LAN, allowing a network to be built virtually without regard for the physical placement of the equipment. The usage of VLANs will make network settings highly flexible, allowing segments to be created based on the organization or department, rather than the location of the workstation, as seen below.

How does VLAN work?

VLANs are categorised based on the mechanism (type) used to classify them, such as ports, MAC addresses, and so on. All information containing vlan tagging/addressing (tagging) is recorded in a database (table); if the tagging is dependent on the port used, the database must mention the ports utilized. VLANs make advantage of it. To configure it, typically employ a controllable or settable switch/bridge. This switch/bridge is responsible for storing all VLAN information and settings and ensuring that other switches/bridges have the same information. The switch will decide where the data will be sent and so on. Alternatively, you may utilize addressing software (bridging software) to record/mark a VLAN as well as the workstations within it. A router is required to link two VLANs.

VLAN Types

Categories within a VLAN can be classified based on the port used, MAC address, protocol type

1. Port based

A VLAN's category may be determined by the port that the VLAN is using. For example, on a four-port bridge/switch, ports 1, 2, and 4 belong to VLAN 1, whereas port 3 belongs to VLAN 2. The disadvantage is that users cannot move, if they have to move, the Network administrator must reconfigure it

2. MAC Address Based

The MAC address of each workstation/computer owned by the user determines VLAN category. All MAC addresses possessed by each Virtual LAN are detected and recorded by the switch. The MAC address is a piece of information that each workstation's NIC (Network Interface Card) has. The advantage is that even if the user moves, he will remain a member of the VLAN. The disadvantage is that each computer must be setup individually, which is inefficient for a network with hundreds of workstations.

Thats all i know about what VLAN is i hope it can give the raders new knowledge and can be usefull for us thank you for reading see you nex time