simple question about VLAN

hi, all

these days company recable the whole network...

some guy told me the switch we have do not have Vlan capabilities.

Could some one told me what is VLAN...what is the usage in networking...

Thanks a lot.
robinyanwangAsked:
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robinluoConnect With a Mentor Commented:
I quoated this part from Sybex CCNA book. Hope this helps.

Virtual Local Area Network (VLAN) is a logical grouping of network users and resources connected to administratively defined ports on a switch. By creating VLANs, you are able to create smaller broadcast domains within a switch by assigning different ports in the switch to different subnetworks. A VLAN is treated like its own subnet or broadcast
domain. This means that frames broadcasted onto a network are only switched between ports in the same VLAN.

Using virtual LANs, you’re no longer confined to creating workgroups by physical locations. VLANs can be organized by location, function, department, or even the application or protocol used, regardless of where the resources or users are located.
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robinyanwangAuthor Commented:
great, that is what i need.
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robinyanwangAuthor Commented:
hehe, we are all Robin...
thank you, Mr Luo.
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robinluoCommented:
You are welcome, Wang? From China? if I may ask...
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robinyanwangAuthor Commented:
yes, Beijing China.
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