2011 Volume 28 Issue 2 Pages 2_31-2_40
Techniques for network virtualization including VPN, Virtual LAN (VLAN), are widely used in the current network environment. Especially, VLAN technology, that is the virtualization of datalinks, becomes essential for current local area network. In this paper, we first classify the network virtualization techniques, then describe the details of VLAN technologies from the its basic concepts.