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IPv4 (English name is Internet Protocol version 4): internet protocol version 4, is the fourth version in the development of Internet protocols (IP). IP is widely used.
This protocol was published by the IETF in RFC version 791 (September 1981), replacing RFC 760 (published January 1980). This protocol was also standardized by US Department of Defense in MIL-STD-1777 version.
In order to overcome the limitations of IPv4 and bring new features to next-generation network operations, a new internet protocol has been researched and released. The new generation (6th generation IPv6) was born to overcome the disadvantages of its predecessor. IPv6 includes 128 bits, which is 4 times longer than IPv4 addresses.
Thus, IPv4 is internet protocol version 4 and also the first to be widely deployed globally.
IP stands for Internet Protocol, which is the digital address that every device connected to the network has to share data with other devices through the Internet connection protocol. Standard IP address formatted with 4 different groups of digits. They are limited from 0 - 255 separated by periods.
IPv6 protocol developed by IETF and approved by the Internet Corporation for Domain Names and Numbers (ICANN), with the function of implementing a location system for computers, and routing traffic on Internet.
In the past, the IPv4 protocol held a "unique" role in the field of networking. The IPv4 protocol is defined as follows:
IPv4 (Internet Protocol version 4) is the fourth version in the development of Internet protocols.IP - Internet Protocol, is a protocol of the TCP/IP protocol stack belonging to the Internet layer, compatible with the Internet. corresponds to the third layer (network layer) of the OSI model.
However, with the strong explosion of the "Internet revolution" has led to the risks of not ensuring network security as well as lack of access space. If no measures are taken to deal with it. timely management, the computer will not be able to connect to the network. Therefore, the need to upgrade and improve the protocol system has become urgent.
In the early 90s of the 20th century, IETF decided to develop a new protocol. This protocol was named IP Next Generation (IPng). By 1998, this protocol was officially standardized. successfully coded and approved by ICANN, allowed to be used in the market, and named IPv6 (RFC 1883).
The advent of IPv6 has solved the inadequacies in the internet system that IPv4 still lacks, thereby creating a leap forward in the digital age.
IPv6 has outstanding improvements compared to IPv4, first of all, the expansion of the number of access addresses.With IPv4, the access space is 32 bits, corresponding to 4 billion addresses. By IPv6, the IP space has been expanded, with the number up to 128 bits, many times larger than the "predecessor".
Besides, IPv6 has other functions such as:
IPv6 is the most commonly used protocol today with many special benefits, including:
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