Derrick
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Internet Protocol Version 6 (IPv6) is a version of the Internet Protocol that is designed to succeed Internet Protocol version 4 (IPv4). IPv4 was the first publicly used Internet Protocol and has been in operation since 1981.
IPv6 is an Internet Layer protocol for packet-switched internetworking and provides an unreliable end-to-end datagram delivery service. The main driving force for the redesign of Internet Protocol was the foreseeable IPv4 address exhaustion. IPv6 was developed by the Internet Engineering Task Force (IETF), and is described in Internet standard document RFC 2460, published in December 1998.[1]
IPv6 uses a 128-bit address, whereas IPv4 uses only 32 bits. The new address space supports 2128 (about 3.4×1038) addresses. This expansion provides considerable flexibility in allocating addresses and routing traffic. It also eliminates the primary need for network address translation (NAT), which gained widespread deployment as an effort to alleviate IPv4 address exhaustion.
IPv6 also implements many other new features. It simplifies aspects of address assignment (stateless address auto-configuration) and network renumbering (prefix and router announcements) when changing Internet connectivity providers. The IPv6 subnet size has been standardized by fixing the size of the host identifier portion of an address to 64 bits to facilitate an automatic mechanism for forming the host identifier from Link Layer media addressing information (MAC address). Network security is also integrated into the design of the IPv6 architecture, and the IPv6 specification mandates support for IPsec as a fundamental interoperability requirement.
Source: http://en.wikipedia.org/wiki/IPv6
IPv6 is an Internet Layer protocol for packet-switched internetworking and provides an unreliable end-to-end datagram delivery service. The main driving force for the redesign of Internet Protocol was the foreseeable IPv4 address exhaustion. IPv6 was developed by the Internet Engineering Task Force (IETF), and is described in Internet standard document RFC 2460, published in December 1998.[1]
IPv6 uses a 128-bit address, whereas IPv4 uses only 32 bits. The new address space supports 2128 (about 3.4×1038) addresses. This expansion provides considerable flexibility in allocating addresses and routing traffic. It also eliminates the primary need for network address translation (NAT), which gained widespread deployment as an effort to alleviate IPv4 address exhaustion.
IPv6 also implements many other new features. It simplifies aspects of address assignment (stateless address auto-configuration) and network renumbering (prefix and router announcements) when changing Internet connectivity providers. The IPv6 subnet size has been standardized by fixing the size of the host identifier portion of an address to 64 bits to facilitate an automatic mechanism for forming the host identifier from Link Layer media addressing information (MAC address). Network security is also integrated into the design of the IPv6 architecture, and the IPv6 specification mandates support for IPsec as a fundamental interoperability requirement.
Source: http://en.wikipedia.org/wiki/IPv6