Internet Video Series Part 1

Episode 09, Segment 1 of 4

Class "C" (Small Commercial Grade) Internet Services

The world wide Internet consists of the local area networks of millions of businesses and homes all interconnected under the authority of the internet architecture board.  When a new business wishes to join the Internet they generally configure their local Ethernet first, as described in our first AskMrWizard.com Ethernet Series, and then they purchase a Class "C" address space connection from an Internet service provider. 

Under the original design of the Internet, a Class C address space was the smallest and most modular connection a business could purchase.  And even though it's the smallest modular connection originally anticipated, it turns out that a Class C address space and a Class C connection is really quite powerful. In fact, it's more powerful than most small business need, and it certainly provides more services than would be needed by a typical home office.  In fact, if a Class C Internet connection is fully exploited in the most efficient possible manner, it allows over 33 million simultaneous networking processes to communicate between the local area network and the worldwide Internet. 

(Click on small image above to see expanded version)

It is commonly stated that a Class C address space allows up to 256 new computers to be connected to the internet.  However, generally three of those 256 IP addresses are lost to networking overhead,  so the real number is 253 new computers.

 Because the Internet is quickly running out of IP addresses, a Class C connection like this with a block of 256 real Internet addresses is quite expensive, since any company that buys one is competing with other companies who want that rapidly dimensioning address space resource. 


Episode 09, Segment 2 of 4