Windows Networking Tools

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LAYERS 2 AND 3 AND THE INTERNET PROTOCOL

different network internal to an organization. However, because the

network portion of the address does not change, all subnets appear

externally to be located on the same network. is means that routing

tables on devices that form the backbone of the Internet need to rec-

ognize a lesser number of network addresses, which in turn simplifies

routing. is also means that routers within an organization must be

able to differentiate between different subnets.

To illustrate the subnet process let’s consider an organization that

within a building operates five Ethernet networks, with between 20

and 30 stations on ...