Originally posted on TCAT Shelbyville - Technical Blog:

Why? The Golden Question

All over the internet you will find information on ‘How to Subnet’.   Suddenly you are thrown into a world of bits and binary and given charts of ‘How to Subnet’.   But why do you subnet?

Subnets are created to separate areas of your network for security and/or to hold down broadcasts.  Computers constantly ‘talk’ to each other.   If you have a network of 10 computers, the talking (opening files or programs) or broadcasting packets that are sent out during networking is not much traffic at all.   However if you have 10,000 computers talking and passing data, you will have thousands of computers passing data and your network will slow down from all of the information.   If you still don’t understand, invite 10 friends over for a get together.  It’ll get noisy but you can still hear every conversation.    Now, go to a rock concert with 10,000…

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About TCAT Shelbyville IT Department

The Tennessee College of Applied Technology - is one of 46 institutions in the Tennessee Board of Regents System, the seventh largest system of higher education in the nation. This system comprises six universities, fourteen community colleges, and twenty-six Applied Technology Colleges.
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