The Internet
Protocol
(IP)
is the principal communications protocol in the Internet protocol suite for
relaying datagrams across network boundaries. This function of routing enables
internetworking, and essentially establishes the Internet.
IP is the primary protocol in the Internet layer of the Internet protocol suite and has the task of delivering packets from the source host to the destination host solely based on the IP addresses. For this purpose, IP defines datagram structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram source and destination.
Historically, IP was the connectionless datagram service in the original Transmission Control Program introduced by Vint Cerf and Bob Kahn in 1974, the other being the connection-oriented Transmission Control Protocol (TCP). The Internet protocol suite is therefore often referred to as TCP/IP.
The first major version of IP, Internet Protocol Version 4 (IPv4), is the dominant protocol of the internet. Its successor is Internet Protocol Version 6 (IPv6).
Internet Protocol (IPv4)
Internet Protocol version 4 (IPv4) is the fourth version in the development of the Internet Protocol (IP) and the first version of the protocol to be widely deployed. Together withIPv6, it is at the core of standards-based inter networking methods of the Internet. IPv4 is still used to route most traffic across the Internet
Internet Protocol (IPv6)
Internet Protocol version 6 (IPv6) is the latest revision of the Internet Protocol (IP), the communications protocol that routes traffic across the Internet. It is intended to replace IPv4, which still carries the vast majority of Internet traffic as of 2013. IPv6 was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion.
Every device on the Internet, such as a computer or mobile telephone, must be assigned an IP address for identification and location addressing in order to communicate with other devices. With the ever-increasing number of new devices being connected to the Internet, the need arose for more addresses than IPv4 is able to accommodate. IPv6 uses a 128-bit address, allowing for 2128, or approximately 3.4×1038 addresses, or more than 7.9×1028 times as many as IPv4, which uses 32-bit addresses. IPv4 allows for only approximately 4.3 billion addresses. The two protocols are not designed to be inter operable, complicating the transition to IPv6.
IPv6 addresses consist of eight groups of four hexadecimal digits separated by colons, for example 2001:0db8:85a3:0042:1000:8a2e:0370:7334.
Deployment of IPv6 is accelerating, and a symbolic marketing event, World IPv6 Launch, was organized by major Internet service providers and users on 6 June 2012, for which they deployed IPv6 addresses to some of their users, especially in countries that had been lagging in IPv6 adoption. Data from Arbor Networks showed a peak of 0.2% of Internet traffic on IPv6 during the launch. As of late November 2012, IPv6 traffic share was reported to be approaching 1%
IP is the primary protocol in the Internet layer of the Internet protocol suite and has the task of delivering packets from the source host to the destination host solely based on the IP addresses. For this purpose, IP defines datagram structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram source and destination.
Historically, IP was the connectionless datagram service in the original Transmission Control Program introduced by Vint Cerf and Bob Kahn in 1974, the other being the connection-oriented Transmission Control Protocol (TCP). The Internet protocol suite is therefore often referred to as TCP/IP.
The first major version of IP, Internet Protocol Version 4 (IPv4), is the dominant protocol of the internet. Its successor is Internet Protocol Version 6 (IPv6).
Internet Protocol (IPv4)
Internet Protocol version 4 (IPv4) is the fourth version in the development of the Internet Protocol (IP) and the first version of the protocol to be widely deployed. Together withIPv6, it is at the core of standards-based inter networking methods of the Internet. IPv4 is still used to route most traffic across the Internet
Internet Protocol version 6 (IPv6) is the latest revision of the Internet Protocol (IP), the communications protocol that routes traffic across the Internet. It is intended to replace IPv4, which still carries the vast majority of Internet traffic as of 2013. IPv6 was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion.
Every device on the Internet, such as a computer or mobile telephone, must be assigned an IP address for identification and location addressing in order to communicate with other devices. With the ever-increasing number of new devices being connected to the Internet, the need arose for more addresses than IPv4 is able to accommodate. IPv6 uses a 128-bit address, allowing for 2128, or approximately 3.4×1038 addresses, or more than 7.9×1028 times as many as IPv4, which uses 32-bit addresses. IPv4 allows for only approximately 4.3 billion addresses. The two protocols are not designed to be inter operable, complicating the transition to IPv6.
IPv6 addresses consist of eight groups of four hexadecimal digits separated by colons, for example 2001:0db8:85a3:0042:1000:8a2e:0370:7334.
Deployment of IPv6 is accelerating, and a symbolic marketing event, World IPv6 Launch, was organized by major Internet service providers and users on 6 June 2012, for which they deployed IPv6 addresses to some of their users, especially in countries that had been lagging in IPv6 adoption. Data from Arbor Networks showed a peak of 0.2% of Internet traffic on IPv6 during the launch. As of late November 2012, IPv6 traffic share was reported to be approaching 1%
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