What Is VLAN and How It Operates

VLANs are groups of workstations that are linked to the very same network, although they are not located in a similar physical location. In situations when there are far too many machines to fit on a common network, a virtual private network (VLAN) may assist. Why and when should you utilize a virtual private network (VPN)? Let’s find out?

What Is a VLAN?

This term refers to the concept of a “Virtual Local Area Network” (VLAN). Network segmentation is a rational arrangement of network resources, often depending on their geography or purpose. All workstations in a college library may be allocated to the “Library” VLAN, whereas all machines in the college’s science laboratory might be allocated to the “Science Laboratory” VLAN.


VLANs may be used to increase the effectiveness and versatility of a local network. By segregating your network activity, a VLAN may enhance both safety and functionality. Network management may also be simplified by combining machines that require comparable configurations. Asynchronous Transfer Mode (ATM), as well as Fiber Distributed Data Interface (FDDI), are two more network technologies where VLANs may be employed.

Applying a label or heading to every Ethernet frame creates a virtual LAN (VLAN). When this label is present, the network knows to which VLAN to send the packet. Until a router is set up to enable it, machines in separate VLANs cannot view each other’s communications.

Why Use a VLAN?


Unsecured network traffic can’t be snooped on by creating separate VLANs for each kind of traffic. Using VLANs may reduce the amount of network congestion, which can lead to better throughput. Transmission to all users on a channel, irrespective of whether they require it or not, is known as “broadcast traffic.” The quantity of broadcast traffic that your network needs to contend with may be reduced by placing equipment in multiple VLANs. With VLANs, adding and removing items from your network is simplified. When you wish to introduce new equipment to your network, you may simply allocate it to the proper VLAN. The entire network does not have to be redone.

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In order to streamline network management, VLANs may unite equipment that needs comparable configurations into a single network. You may, for instance, group all of your marketing dept’s computers into a single VLAN. As a result, you’ll be able to uniformly secure and optimize the party’s machines for optimal efficiency.

When’s The Right Time To Make Use of VLAN?


Virtual private networks (VLANs) are useful in a few situations. VLANs may be used to divide up a huge network into separate segments if you have a lot of gadgets on it. In this way, it will be easy for you to monitor and repair your network. Your network’s safety may also be improved by using virtual private networks (VLANs). There are two reasons why VLANs might be useful for creating transitory networks for conferences or other tasks. You may retain your gadgets on the same physical location even if they need to be on separate subnets thanks to the use of virtual LANs (VLANs).

VLANs provide a number of advantages, but they also have a significant safety concerns. VLAN hopping might occur if a rogue person obtains entry to a router-connected device and sends activity to different VLANs they shouldn’t be allowed to visit. To avoid this, make certain that your network’s equipment is adequately secured and that solely authorized people have exposure to it. Large networks may benefit from the use of VLANs since they make management and security easier while also providing more flexibility. With every new tech, there are always hazards to consider. If you’re considering using VLANs on your network, keep these in mind.