Changes

A local area network (LAN) is typically a collection of devices connected to a single switch. A virtual local area network (VLAN) typically involves grouping devices on a single switch into multiple broadcast domains and network segments. This provides a way to limit broadcast traffic on each segment of the network (improving overall performance) and increased security through the deployment of multiple isolated LANs on a single switch. A concept known as ''trunking'' can be used to create a VLAN which spans multiple switches. This enables users to be groups on VLANs based on function rather than by physical location. For example all members of the accounting department can be placed in the same VLAN regardless of the switches to which they are physically connected.

== Network Address Translation (NAT) ==