27-09-2012, 12:12 PM
IP ADDRESSING
IP ADDRESSING.docx (Size: 14.9 KB / Downloads: 45)
ABSTRACT
The Internet Protocol is the glue that holds together modern computer networks. IP specifies the way that messages are sent from computer to computer; it essentially defines a common "language" that is spoken by every computer stationed on the Internet. This describes IPv4, the fourth version of the Internet Protocol, which has been used on the Internet since 1982.Internet is similar to the phone network. On the Internet, the connections between computers are shared by all of the conversations. Data is sent in blocks of characters called datagrams, or more colloquially, packets. Each packet has a small block of bytes called the header, which identifies its sender and intended destination on each computer. The header is followed by another, usually larger, block of characters of data called the packet's contents. After the packets reach their destination, they are often reassembled into a continuous stream of data; this fragmentation and reassembly process is usually invisible to the user. As there are often many different routes from one system to another, each packet may take a slightly different path from source to destination. Because the Internet switches packets, instead of circuits, it is called a packet-switching network.The InternetEngineering Task Force has come up with a new protocol that defines the nextgeneration IP protocol. This protocol is known as “IPng” or “IPv6”. IPv6 addresses all theproblems faced in IPv4, and at the same time provides features like Scalability, Security,ease-of-configuration and so on. IPv6 has now been standardized and will carry TCP/IPnetworks and applications. IPv6 Phase One has already been released.