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New Data Center The New Data Center: Wireless & Mobility
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The New Data Center: Server Virtualization
Server Virtualization

VLAN (virtual LAN)

A VLAN acts like an ordinary LAN, but connected devices don't have to be physically connected to the same segment.

While clients and servers may be located anywhere on a network, they are grouped together by VLAN technology, and broadcasts are sent to devices within the VLAN.

VLANs configured bye using Media Access Control addresses can recognize when a station has been moved to another port on a switch. VLAN management software can then automatically reconfigure that station into its appropriate VLAN without the need to change the station's MAC or IP address.

The 802.1Q specification establishes a standard method for inserting VLAN membership information into Ethernet frames. The ability to move endstations to different broadcast domains by setting membership profiles for each port on centrally managed switches is one of the main advantages of 802.1Q VLANs.

Additional resources

Wireless technology puts users in place
A look at role-based VLANs in wireless networks. Network World, 10/6/03.

Users get innovative with virtual LANs
Network World, 5/27/02.

LAN research center
Latest news, analysis and how-tos from Network World Fusion.

There are 4 comments:

Vlan
By Ganesh Jaju

I was looking for simple,lucid description of vlan
which i found here.


------------
Ganesh Jaju
http://ganesh.jaju.googlepages.com/


networks
By raymond

really good for giving us an insight into the basic operation of network devices.


networking
By varunreddy

its very useful to every network ........peopole.


Vlan
By Joyce Ngonyama

Very helpful info.



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