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Monday, April 14, 2008

IP Address

Internet protocol (IP) is the set of techniques used by many hosts for transmitting data over the Internet. The current version of the Internet protocol is IPv4, which provides a 32-bit address system.

Internet protocol is a "best effort" system, meaning that no packet of information sent over it is assured to reach its destination in the same condition it was sent. Often other protocols are used in tandem with the Internet protocol for data that for one reason or another must have extremely high fidelity.

Every device connected to a network, be it a local area network (LAN) or the Internet, is given an Internet protocol number. This address is used to identify the device uniquely among all other devices connected to the extended network.

The current version of the Internet protocol (IPv4) allows for in excess of four billion unique addresses. This number is reduced drastically, however, by the practice of webmasters taking addresses in large blocks, the bulk of which remain unused. There is a rather substantial movement to adopt a new version of the Internet protocol (IPv6), which would have two to the one-hundred twenty-eighth power of unique addresses. This number can be represented roughly by a three with thirty-nine zeroes after it.

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