3com S7906E Manuel De Montage

 

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When configuring VLAN, go to these sections for information you are interested in: 

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Ethernet is a network technology based on the Carrier Sense Multiple Access/Collision Detect 

(CSMA/CD) mechanism. As the medium is shared, collisions and excessive broadcasts cannot be 

avoided on an Ethernet. To address the issue, virtual LAN (VLAN) was introduced.  

The idea is to break a LAN down into separate VLANs, that is, Layer 2 broadcast domains whereby 

frames are switched between ports assigned to the same VLAN. VLANs are isolated from each other at 

Layer 2. A VLAN is a bridging domain, and all broadcast traffic is contained within it, as shown in 

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Figure 1-1 A VLAN diagram 

Switch B

Switch A

Router

 

 

A VLAN is logically divided on an organizational basis rather than on a physical basis. For example, all 

workstations and servers used by a particular workgroup can be connected to the same LAN, 

regardless of their physical locations.  

VLAN technology delivers the following benefits: