What is IPv6

Internet Protocol version 6 (IPv6) is Internet Layer protocol for packet-switched internetworks and the Internet.

IPv6 has a much larger address space than IPv4. This is based on the definition of a 128-bit address, whereas IPv4 used only 32 bits. The new address space thus supports 2128 (about 3.4×1038) addresses. This expansion provides flexibility in allocating addresses and routing traffic and eliminates the need for network address translation (NAT). NAT gained wide-spread deployment as an effort to alleviate IPv4 address exhaustion.

IPv6 also implements new features that simplify aspects of address assignment (stateless address autoconfiguration) 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 integrated into the design of the IPv6 architecture. Internet Protocol Security (IPsec) was originally developed for IPv6, but found wide-spread optional deployment first in IPv4 (into which it was back-engineered). The IPv6 specifications mandate IPsec implementation as a fundamental interoperability requirement.

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I was just looking thru the settings of my Airport Extreme base station router and came across IPv6. There's a check in the box that says "Block Incoming IPv6 Connections". What exactly changes if I uncheck that box and allow the incoming connections? Are there certain internet applications that it would help or hinder? It says something about how IPv6 increases the address size or something?? Any networking pros please advise.Thanks

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IPv6 is sometimes called the Next Generation Internet Protocol, or IPng. Even though the Internet is seen as a relatively new technology, the protocols and technologies that make it work were developed in the 1970s and 1980s..IPv6 eases connectivity for secure next-generation devices..it has dual capabilities provide the company's customers with industry standard approved technology..

IPv6 stands for Internet Protocol version 6. It is the second version of the Internet Protocol. One of the main upgrades in IPv6 is in the number of addresses available for networked devices. IPv6 allows 3.4x10^38 addresses is mainly due to the number of bits in each protocol.

Ipv6 is a new version of the ip protocol used for internet communications.It's been slowly adopted for a number of years.Still almost all users use just the old ipv4 protocol.One of the problems with ipv4 is that it's addressing scheme only allows the internet to have about four billion hosts with unique addresses.This limit will be reached some day.Ipv6 provides a very large number of usable addresses,so for the internet as a whole it is an important upgrade.

IPv6 stands for Internet Protocol version 6. It is the second version of the Internet Protocol to be used generally across the virtual world. The first version was IPv4. IPv5 was a protocol of a different sort, intended to support video and audio rather than all-purpose addressing. IPv6 is also known as IPng, which stands for IP Next Generation.

Wow! The last 5 replies are almost identical. Do you guys read the last comment first before replying?

IPv6 or "Internet Protocol version 6" is the new version of IPv4. But mostly computer they are using IPv4 because it is easy to configure. Since IPv6 is new to us it is hard for us to overcome this but the good with IPv6 is more faster and reliable.

IPv6 stands for Internet Protocol version 6. It is the second version of the Internet Protocol to be used generally across the virtual world. The first version was IPv4. IPv5 was a protocol of a different sort, intended to support video and audio rather than all-purpose addressing. IPv6 is also known as IPng, which stands for IP Next Generation.

One of the main upgrades in IPv6 is in the number of addresses available for networked devices. For example, each mobile phone or other kind of electronic device can have its own IPv6 address. IPv6 allows 3.4x10^38 addresses. This is mainly due to the number of bits in each protocol. IPv4 addresses have 32 bits in them and so allow a maximum of four billion addresses. IPv6 addresses have 128 bits. by (google)

IP, the Internet Protocol, is one of the pillars which supports the Internet. Almost 20 years old, first specified in a remarkably concise 45 pages in RFC 791, IP is the network-layer protocol for the Internet.

In 1991, the IETF decided that the current version of IP, called IPv4, had outlived its design. The new version of IP, called either IPng (Next Generation) or IPv6 (version 6), was the result of a long and tumultuous process which came to a head in 1994, when the IETF gave a clear direction for IPv6.

IPv6 is designed to solve the problems of IPv4. It does so by creating a new version of the protocol which serves the function of IPv4, but without the same limitations of IPv4. IPv6 is not totally different from IPv4: what you have learned in IPv4 will be valuable when you deploy IPv6. The differences between IPv6 and IPv4 are in five major areas: addressing and routing, security, network address translation, administrative workload, and support for mobile devices. IPv6 also includes an important feature: a set of possible migration and transition plans from IPv4.

Since 1994, over 30 IPv6 RFCs have been published. Changing IP means changing dozens of Internet protocols and conventions, ranging from how IP addresses are stored in DNS (domain name system) and applications, to how datagrams are sent and routed over Ethernet, PPP, Token Ring, FDDI, and every other medium, to how programmers call network functions.

The IETF, though, is not so insane as to assume that everyone is going to change everything overnight. So there are also standards and protocols and procedures for the coexistence of IPv4 and IPv6: tunneling IPv6 in IPv4, tunneling IPv4 in IPv6, running IPv4 and IPv6 on the same system (dual stack) for an extended period of time, and mixing and matching the two protocols in a variety of environments.

@myvouchercodes, Your answer is useful for me.

nternet Protocol version 6 (IPv6) is the next-generation Internet Protocol version designated as the successor to IPv4, the first implementation used in the Internet that is still in dominant use . It is an Internet Layer protocol for packet-switched internetworks. ...

@samueleric
I vote for your answer!

Hii Monalisa!
yes you provided nice information about ipv6, it is not as yet very popular and also it is not used widely, but its very fast and secure.
iPv6 has a much larger address! space than IPv4 therefore it should be preferred over ipv4. Also i recommend that have a antivirus installed as it not only protects data but scan viruses too.
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Thanks for the precious information.

i got it , thank you

In the field of networking IP address is such a basic thing. It is a kind of address where you receive information in the form of packets. And IPv6 is a new internet protocol version for packet switched internet works and internet.

Internet Protocol version 6 (IPv6) is Internet Layer protocol for packet-switched internetworks and the Internet.

Thanks for post