It 242 Vlan

It 242 Vlan

Assignment: VLAN

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IT/242

January 19, 2012

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Assignment: VLAN

    VLAN short for Virtual Local Area Network is a new LAN technology that allows addition of a cost effective network that does not compromise security or performance of the network.   VLAN is defined as “a switched network that is logically segmented on an organizational basis; either by functions, project teams, or applications rather than on a physical or geographical basis” (Regan, (2004)). Using VLAN’s are excellent for organizations with multiple departments since VLAN can be created for the specific needs of each department even ignoring the need of a central physical location. “A VLAN can be thought of as a broadcast domain that exists within a defined set of switches” (Regan, (2004)). Switches are nowadays more economical in price so organizations are replacing older hubed networks with switched networks designed for using VLAN’s.

    VLAN’s are able to divide and isolate a network into different broadcast domains. According to Regan, (2004) VLAN’s are basically a bridge domain that has all broadcast traffic isolated and contained within the VLAN. VLAN’s also provides complete and total isolation from other VLAN’s. Security is also improved by using VLAN’s since they are able to isolate groups. Users are not able to physically connect to a VLAN so access can’t be gained from just plugging into the switch (Regan, (2004)). Servers also can be assigned to multiple VLAN’s so a user can connect to all resources needed. Since a single server can run multiple VLAN’s the task of backing up the data used in a VLAN quick and easy.

    When deciding to use a VLAN you must consider the type of membership to use to implement, how you want to separate your network, and know the general amount of traffic your network needs to handle. The networks traffic needs to be outlined to properly set up its disruption (Regan, (2004)). According to Regan, (2004) VLAN’s using port...