Difference between subnetting & Vlan??

Answer Posted / ranji2011

Hi Friends,

“Subnetting” allows you to create multiple logical networks
that exist within a single Class A, B, or C network. If you
do not subnet, you are only able to use one network from
your Class A, B, or C network, which is unrealistic.
Each data link on a network must have a unique network ID,
with every node on that link being a member of the same
network. If you break a major network (Class A, B, or C)
into smaller subnetworks, it allows you to create a network
of interconnecting subnetworks. Each data link on this
network would then have a unique network/subnetwork ID. Any
device, or gateway, connecting n networks/subnetworks has n
distinct IP addresses, one for each network / subnetwork
that it interconnects.

In order to subnet a network, extend the natural mask using
some of the bits from the host ID portion of the address to
create a subnetwork ID.

“VLANs” are a mechanism to allow network administrators to
create logical broadcast domains that can span across a
single switch or multiple switches, regardless of physical
proximity. This function is useful to reduce the size of
broadcast domains or to allow groups or users to be
logically grouped without the need to be physically located
in the same place.

Regards,
Ranji
Network engineer
netranjit@yahoo.co.in

Is This Answer Correct ?    3 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is cam?

686


Which protocol works only on cisco routers?

629


Explain the difference between static and dynamic routing?

607


What is the size of ipv4?

677


What is the purpose of the Data Link?

654






What are the different ways authentication mechanism in VPN?

3442


How many parts of ping?

656


What is EIGRP?

702


Explain the terms unicast, multicast, broadcast and multicast.

667


1900 Value in which type of access list?

581


What do you understand by poe (power over ethernet)?

686


How many hop counts are by default and how much you can increase in eigrp protocol?

643


Can you explain different components in PKI?

1428


In stead of 0.0.0.0 wild card mask what you can write after ip?

607


What is the attenuation?

678