How to configure a VLAN

Step 1:

  • Basic Overview of Network for Vlan Configuration
  • We will be placing Host 2 and 4 into vlan 20 and Host 1 and 3 into vlan 10

Step 2:

  • I like to start out using the Show Vlan command as below. these are the defaults, its also good practise to check especially if its an older router who knows what configurations will be on them.
    Type the Below:
    enable, enter
    Show vlan, enter

Step 3:

  • Lets place Hosts 1 and 3 into VLAN 10 with the below commands
    We firstly create the vlan ID's then we connect to the interfaces and apply the vlans to the interface
  • Lets place Hosts 2 and 4 into VLAN 20 with the below commands
    Type the below:
    enable, enter
    configure terminal, enter
    vlan 10, enter
    exit, enter
    interface fastethernet 1/0/1, enter
    switchport access vlan 10, enter
    exit,     enter
    interface fasthethernet 1/0/3,     enter
    switchport access vlan 10,     enter
    exit,     enter
    vlan 20, enter
    exit, enter
    interface fastethernet 1/0/2, enter
    switchport access vlan 20, enter
    exit, enter
    interface fastethernet 1/0/4, enter
    switchport access vlan 20, enter
    exit, enter
    Ctrl Z

Step 4:

  • Lets Test our Vlan Configuration by running the show vlan command
    Type the below:
    enable, enter
    show vlan, enter

    Note - Remember to save you configurations