Appendix B
Virtual Local Area Networks (VLANs)
A Local Area Network (LAN) can generally be defined as a broadcast domain. Hubs, bridges or switches in the same physical segment or segments connect all end node devices. End nodes can communicate with each other without the need for a router. Routers connect LANs together, routing the traffic to the appropriate port.
A virtual LAN (VLAN) is a
A VLAN is a group of PCs, servers and other network resources that behave as if they were connected to a single, network
The Advantages of VLANs:
•Easy to do network segmentation: Users that communicate most frequently with each other can be grouped into common VLANs, regardless of physical location. Each group's traffic is largely contained within the VLAN, reducing extraneous traffic and improving the efficiency of the whole network.
•Easy to manage: The addition of nodes, as well as moves and other changes, can be dealt with quickly and conveniently from a management interface rather than from the wiring closet.
•Increased performance: VLANs free up bandwidth by limiting
•Enhanced network security: VLANs create virtual boundaries that can only be crossed through a router. So standard,
VLAN
Virtual Local Area Networks (VLANs) |