what is the reason for creating vlans

Question Posted / yugandharanantwar

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what is the reason for creating vlans..

Answer / sidhant dogra

vlan (virtual LAN) is created over the physical lan in
order to provide the security n prevent the access of any
one department from other............considering an eg of a
college campus.....there are various departments like
accounting.liberary database department so ,vlans are there
to prevent the access of any documentary part of any
department from other departments

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what is the reason for creating vlans..

Answer / vikram

ans:

Sidhant Dogra is right however main reason of creating vlan
is.. a switch has one broadcast domain. so what ever broadcast
it gets it will forword to all the end devices.. however if
u creat vlans in switch u can break broadcast domain into
many smaller broadcast domain..quoting sidhant dogras
statement :considering an eg of a
:college campus.....there are various departments like
accounting.liberary database department so ,vlans are there
to prevent the access of any documentary part of any
department from other departments """

dif departments have diff broadcast domains ..

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1 No

what is the reason for creating vlans..

Answer / sandeep samale

ANS:
1. Security:
VLAN's enhance network security by dividing into multiple
broadcast domain. e.g. If group of users needing high
security can be put into a VLAN so the outside user of the
vlan can not communicate with them. Also keep the sensitive
data on a separate VLAN.
2. Performance:
In single broadcast domain there are too many broadcast. By
creating different VLAN it reduce the broadcast and as well
as to help in reducing the bandwidth consumption in the
network and increase the performance.
Also by creating separate vlan it possible to separate
traffic e.g. to separate traffic of voice and data separately.
3. Flexibility:
By using VLAN it can be possible to logically divide the
group as per the requirement. It is more manageable and ease
of adding and deleting and changing between different group
to the users.

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what is the reason for creating vlans..

Answer / s.m.feroz ahmed

Hi,

Vlans are created for easy communication and easy mapping
of lan systems by differentiating with fa01 and fa02 fa03
fa04 ..............fa99 .where in a lan in which ip address
ranging from 192.168.1.1 to 192.168.1.99 and among these ip
ranges 192.168.1.1 to 4 are servers and we club them in
Fa01 and ip range from 192.168.1.5 to 192.168.1.6 to
192.168.1.75 into Fa02 and so on and in this way we can
differentiate Local Lan in order to be out of control of
Important servers and systems in network for better
performance .Vlans play a very vital role if switch is
installed in LAN.

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