IntroductionEvery day, millions of people around the world use some sort of device that connects them to the Internet where the answers they seek or attempt to seek are available. . However, since there are probably about a billion devices connected to the Internet, a routing system must be in place to direct certain information to the devices that request it. Computers and devices have a system for directing information, called packets, to the right place. This system stack is based on four layers, the top layer being the one related to applications, the second layer being transport, the third layer being the network layer and finally the physical layer. Each part has a specific process that gets the message to the right device. Specifically, the network layer will be examined with respect to the device address. When we put a battery in an example, we can link the messaging system. The application layer would include the author and the letter sent. Since the writer is busy, he sends someone to put the mail in the mailbox which would be the transport layer. The next layer, the network layer, would be the actual address of the mailbox. Finally, the physical layer is the process of getting mail to its destination by stopping at other destinations such as the mail center, airport, and post office. Each step is important in the process of completing this work. However, there is currently an issue being resolved and it concerns the network layer. IP is the most commonly used tool in the network layer, but the number of addresses is running out. Before we get into the details of why this happens. What exactly is IP?What is IP?IP, or Internet Protocol...... middle of paper ...... With upgraded features of IPv6 , companies could eventually move to IPv6, such as Facebook, Google and Yahoo. The large amount of addresses in IPv6 with its 128-bit address will ensure that no replacement will be necessary for a while, as the number of available addresses is equal to that of the number of known stars in space. Works Cited Segal, Ben. “A Brief History of Internet Protocols at CERN.” April 1995, n. page. Print. .Das, Kaushik . “IPv6 – The History and Timeline.” IPv6.com. No. Internet. December 4, 2013. .Spangler, Todd. “The Internet lacks addresses.” Multichannel News 32.6 (2011): 18. Business Source Premier. Internet. December 6, 2013. “World IPv6 Day List.” Internet Company. No. Internet. December 4 2013. .