What is vlan and why it is used

    what is vlan and how it works
    what is vlan and how it works in networking
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  • What is vlan and how it works

    • Advantages of vlan.

    Types of vlan

    Virtual LAN (VLAN)

    Virtual LAN (VLAN) is a concept in which we can divide the devices logically on layer 2 (data link layer). Generally, layer 3 devices divide the broadcast domain but the broadcast domain can be divided by switches using the concept of VLAN. 

    A broadcast domain is a network segment in which if a device broadcast a packet then all the devices in the same broadcast domain will receive it.

    The devices in the same broadcast domain will receive all the broadcast packets but it is limited to switches only as routers don’t forward out the broadcast packet. To forward out the packets to different VLAN (from one VLAN to another) or broadcast domains, inter Vlan routing is needed.

    How to create vlan

  • Vlan configuration
  • Advantages of vlan
  • Vlan vs lan
  • What is vlan in networking

    • Through VLAN, different small-size sub-networks are created which are comparatively easy to handle. 

    VLAN ranges:

    • VLAN 0, 4095: These are reserved VLAN which cannot be seen or used.
    • VLAN 1: It is the default VLAN of switches.

      By default, all switch ports are in VLAN. This VLAN can’t be deleted or edit but can be used.

    • VLAN 2-1001: This is a normal VLAN range

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