Virtual (or software-configured) local area networks can simplify network management for you and improve the user experience. If you are new to configuring VLANs, you should first familiarize yourself with the different types you need to configure and this can bring you some benefits for your business. This article outlines five common types of VLANs and the main reasons for their implementation.
Types of VLANs
VLANs are classified in to 5 types according to their purpose
Management VLANs: It is best to configuring a separate VLAN for management traffic such as monitoring, system logging, SNMP, and other key management functions. In addition to the security benefits, it also ensures that the available bandwidth is also available with high user traffic.
Data VLANs: Also called as user VLAN, the data VLAN is specified only for user-generated data. How you group your data into VLANs (such as departments or workgroups) depends on your organizational structure and business processes. Before configuring the data VLAN, take a moment to review the big picture of potential VLANs and evaluate the logic of how to group users.
Voice VLANs: If your organization uses Voice over IP (VOIP), you may want to have a separate voice VLAN. This protects bandwidth for other applications and secure VoIP quality.
Default VLANs: It can refer to one of two types. Typically, this includes when all ports on the default VLAN device are turned on. On most switches, this default should be changed to VLAN 1 and for security reasons. Some network managers may use the term “default VLAN” to refer to VLAN, when all ports are assigned when not in use.
Native VLANs: The native VLAN is the one in which non-separate traffic will be kept on receipt at the trunk port. This allows your VLAN to support legacy devices or devices that do not mark their traffic as mere wireless access points and network-connected devices.
Benefits of VLANs
Simplified administration for the network manager
One of the best things about virtualization is that it simplifies administration. By logically grouping users into similar virtual networks, you can set and control your policies at the group level. When users physically move workstations, you can place them on the same network with different devices. Or if computers change but not workstations, they can easily be given access to the new VLANs they need.
The use of VLANs improves security by reducing both internal and external risks. Internally, isolating users improves security and privacy by ensuring that users can only access networks that apply to their responsibilities. External threats are also minimized. If an external attacker is able to gain access to a single VLAN, it will be included in that network to be divided from your network by its limitations and restrictions.
Easier fault management
Network troubleshooting is easier and faster when different user groups are segmented and segregated. If you know that your complaint is only originating from a certain subset of users, you can quickly narrow down where to look for the problem.
Improved quality of service
VLANs manage traffic more efficiently to make their end users work better. You have fewer latency issues on your network and more reliability for critical applications. VLANs also greatly simplify traffic prioritization, so you can ensure that critical application data continues to flow even when the lowest-priority traffic occurs, such as spikes in web browsing.