Advantages of VLAN
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VLANs provide several key advantages for network segmentation and security. It reduces broadcast traffic by sending broadcasts only within the relevant VLAN, rather than across the entire network. VLANs also enhance security by restricting each port and user to only communicate within their assigned VLAN, preventing unauthorized access. Additionally, implementing VLAN segmentation is often cheaper than using routers to segment networks into multiple broadcast domains.
Advantages of VLAN
- 2. The main advantages of VLAN are listed below. Broadcast Control: Broadcasts are required for the normal function of a network. Many protocols and applications depend on broadcast communication to function properly. A layer 2 switched network is in a single broadcast domain and the broadcasts can reach the network segments which are so far where a particular broadcast has no scope and consume available network bandwidth. A layer 3 device (typically a Router) is used to segment a broadcast domain. If we segment a large LAN to smaller VLANs we can reduce broadcast traffic as each broadcast will be sent on to the relevant VLAN only.
- 3. Security: VLANs provide enhanced network security. In a VLAN network environment, with multiple broadcast domains, network administrators have control over each port and user. A malicious user can no longer just plug their workstation into any switch port and sniff the network traffic using a packet sniffer. The network administrator controls each port and whatever resources it is allowed to use. VLANs help to restrict sensitive traffic originating from an enterprise department within itself.
- 4. Cost: Segmenting a large VLAN to smaller VLANs is cheaper than creating a routed network with routers because normally routers costlier than switches. Physical Layer Transparency: VLANs are transparent on the physical topology and medium over which the network is connected.