Add Yahoo as a preferred source to see more of our stories on Google. When set up correctly, virtual LANs improve the performance of busy networks. VLANs can group client devices that communicate ...

VLANs break a physical LAN into several logical broadcast domains. Each LAN station hears traffic sent by its own VLAN but receives nothing from stations in other VLANs -- not even from those ...

The term VLAN stands for virtual local area network. To understand VLANs, let's start with a network design that does not employ VLANs. Figure 1 shows a simplified diagram of a typical broadcast ...

Nutter helps a reader protect the servers in his growing network. As our network grows in size, so does the need to protect the servers. We have already put in an interior firewall between the servers ...

A virtual LAN (VLAN) is a broadcast domain created by switches. VLANs are a convenient way to connect ports from different switches and different buildings onto the same network and broadcast domain, ...

For broadcast containment, a Virtual Lan (VLan) offers some flexibility. The reduction in the cost of switches has seen these devices deployed throughout many companies. While this allows greater ...

I sometimes find myself talking about a topic and getting blank stares. Then a year or two later, everyone is suddenly talking about it. One such topic is security virtualization. Until now, those two ...

The real question is do you want this device to be pushing/popping STags or just passing them along. Most ASICs shouldn't have an issue with the latter but if you need it to manipulate tags it's ...

A method for supporting different types of networks or multiple logical networks within the same network. Every router in the network is capable of supporting several protocol stacks or several ...

Also called a "VLAN," it is a logical subgroup within a local area network that is created via software rather than manually moving cables in the wiring closet. It combines user stations and network ...