| Internet Protocol (IP) is the routed protocol of the Internet. IP addressing enables packets to be routed from source to destination using the best available path. The propagation of packets, encapsulation changes, and connection-oriented and connectionless protocols are also critical to ensure that data is properly transmitted to its destination. This module will provide an overview for each. The difference between routing and routed protocols is a common source of confusion for students learning networking. The two words sound similar but are quite different. This module also introduces routing protocols which allow routers to build tables from which to determine the best path to a host on the Internet. No two organizations in the world are identical. In fact, not all the organizations can fit into the three class system of A, B, and C addresses. However, flexibility does exist within the class addressing system and it is called subnetting. Subnetting allows the network administrators to determine the size of the pieces of the network they will be working with. Once they have determined how to segment their network, they can then use the subnet mask to determine what part of the network each device is on. |
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