Question: What is VLAN and why it is needed?

A VLAN allows different computers and devices to be connected virtually to each other as if they were in a LAN sharing a single broadcast domain. VLANs can help reduce IT cost, improve network security and performance, provide easier management, as well as ensuring network flexibility.

What is the purpose of VLANs?

VLANs address issues such as scalability, security, and network management. Network architects set up VLANs to provide network segmentation. Routers between VLANs filter broadcast traffic, enhance network security, perform address summarization, and mitigate network congestion.

What is a VLAN and how does it work?

A VLAN is a set of end stations and the switch ports that connect them. Like a bridge, a VLAN switch forwards traffic based on the Layer 2 header, which is fast. Like a router, it partitions the network into logical segments, which provides better administration, security, and management of multicast traffic.

What is VLAN and why VLAN?

A VLAN (virtual LAN) is a subnetwork which can group together collections of devices on separate physical local area networks (LANs). A LAN is a group of computers and devices that share a communications line or wireless link to a server within the same geographical area.

Are VLANs cost efficient?

VLANs are cost-effective, because workstations on VLANs communicate with one another through VLAN switches and dont require routers unless they are sending data outside the VLAN.

Is MPLS private or public?

MPLS is a private connection linking data centers and branch offices. MPLS is typically outsourced, managed by service providers who guarantee network performance, quality and availability. Because MPLS is essentially a private network, it is considered reliable and secure, but also expensive.

When should I use VLAN?

VLANs can be used for different groups of users, departments, functions, etc., without needing to be in the same geographical area. VLANs can help reduce IT cost, improve network security and performance, provide easier management, as well as ensuring network flexibility.

Is VPN good or bad?

Using a virtual private network (VPN) is usually a good idea, especially if you frequent public Wi-Fi. By encrypting your Wi-Fi connection, a VPN protects your communications from invasive eyes and plays a vital role in your overall digital defense. But using a free VPN is a no good, very bad idea.

Why is MPLS needed?

Using MPLS is cost-effective because packets can determine their own path dynamically, reducing the need for extensive and expensive static infrastructure that is required in circuit-switched networks. Circuit-switched networks require more physical wires and T1 lines to provide for predictable routes.

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