Virtual LAN (VLAN) service, for short, is to make one physical switch look like and used like multiple logical switches. This is indeed a "virtualization" of Ethernet switches, just like the concept of "virtualization computing" now. "Virtualization computing" is quite a hot topic recently. If you have used VMWare or Microsoft Virtual PC, you would know what virtualization is!
Virtual LAN <---> Virtual Machine
I will talk more about "Virtualization" in the future! Let's go back to the main topic.
This practice is to get familiar with assigning different switch ports to different VLANs.
According to the requirements displayed in the diagram, once we assign the switch ports connecting to PC1 and PC3 to VLAN 10, and then assign switch ports connecting to PC2 and PC4 to VLAN 20, our jobs are done. Two worlds are seperated!
To assign switch port to designated VLAN we can configure like the this: (Suppose the designated VLAN number is 10)
interface FastEthernet 0/1 switchport access vlan 10
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