Ipv6,internet Protocol version 6, literally translated "Internet Protocol 6th Edition", is an IETF designed to replace the current version of the IP protocol-ipv4 protocol, known as "next-generation Internet Protocol". As early as June 6, 2012, the Internet Society organized the IPV6 agreement to launch the Conference. In June 2017, Apple made it clear that all developers would have to support Ipv6-only's network, and many IOS developers were faced with a denial of audit due to the IPV6 network's lack of support, which led us to realize that the days of support IPv6 finally arrived.
The necessity of IPV6 upgrade
Why speed up the upgrade to IPV6? What good is it to us to upgrade to IPV6?
In recent years, the rapid increase in the number of smart devices, so that the problem of IPV4 address shortage in front of us, which has become the main reason to accelerate the promotion of IPv6. Today, everyone will have at least two or more devices or hosts, there is a higher level of connectivity requirements, a large number of IP addresses to allocate. November 26, 2017, the general office of the Central Committee of the CPC, the State Council issued the "Promotion of the Internet Protocol Sixth edition (IPV6) Scale deployment action Plan", and issued a notice, the regional departments to implement the actual implementation of the joint. In the country-led and market-driven, IPV6 will soon become the only option to add new devices or hosts on the Internet, and to make our transition to IPV6 as early as possible, so that no longer supports IPv4 on the inevitable days, and the adoption of IPV6 as soon as possible will enable us to use IPV4 with ease, Have no impact on their business.
Thinking of "Network real name"
IPv6 provide a large number of IP at the same time, will not let "network real name" really implement it? Now IPV4 IP address is still dynamic distribution, can not implement IP address and device, or IP address and person one by one corresponding, and to IPV6, have enough address, everyone and device fixed an address, so to realize the real name, network security also further improve, for network fraud will be more convenient to track.
Will future children be born with a fixed IP address in addition to the unique ID number?
Advantages of IPV6
Fast, this is the Internet long-term pursuit of goals, and data security in today's society is also becoming more and more important.
Larger address space: IPv4 with a 32-bit address length, can provide us with 2^32 about 4.3 billion addresses, and IPv6 with 128-bit address length, provide us with 2^128 address, can be said to be unrestricted address, conservative estimate IPv6 the actual assignable address, the entire Each square meter of the earth can still allocate more than 1000 address, for every grain of sand in the world to make an IP address really is not casually said. This is also the above-mentioned "network real-name" conjecture of the important basis.
Faster transfer speed: IPv6 uses a fixed header, unlike IPv4, which carries a bunch of lengthy data, and a short header improves the efficiency of network data forwarding. And because the IPV6 routing table is smaller, the aggregation ability is stronger, the path of data forwarding is shorter, the forwarding efficiency is greatly improved, IPV6 also eliminates most of the address conflict problems common in IPv4, and provides more simplified connection and communication for the device.
More secure transmission: IPV4 has never been considered safe, although more and more websites are opening SSL, but there are still a large number of sites do not use HTTPS, but IPv6 from beginning to end are built on the basis of security, in the network layer authentication and encryption of data and IP packet verification, To provide users with client-to-server data security to ensure that data is not hijacked.
The difficulty of upgrading IPV6
IPV6 will not replace IPv4 immediately, because IPv6 and IPV4 are two completely incompatible protocols (compatible in very few specific scenarios), and if you want to upgrade from a support IPv4 to a IPv6, both the application client, the server terminal, the router, and so on, both support IPV6 To solve the problem, the cost of this upgrade is enormous. Fortunately, the IETF recommends dual-stack technology and tunneling technology to address compatibility issues.
The dual-stack mechanism is to enable the IPV6 network node to have a IPv4 stack and a IPv6 stack, while supporting IPV4 and IPV6 protocols. These nodes can either send and receive IPV4 packets or send and receive IPv6 groupings. They can use IPV4 to communicate with IPV4 nodes, or they can interoperate directly with IPV6 nodes using IPV6. Dual stack technology does not require tunneling.
The tunneling mechanism is the mechanism by which the IPV6 packets are encapsulated in the IPV4 packet as data, so that IPV6 packets can be transmitted on the existing IPV4 infrastructure. But considering the tunnel technology to go public network, the network is not controllable and support agreements and other issues, although you can rent the operator's leased line, but the cost of the line is too high.
The deployment and popularization of IPV6 is a trend, but now the domestic resources are small, difficult to set up, and after the layout of the compatibility and stability, which is to allow the main reason to discourage enterprises.
and shoot the cloud. Deployment IPv6 Progress
In order to solve the cloud customers Apple APP audit issues, and Pat Cloud earlier in Hong Kong node first access to the IPV6 network, for the time when a large number of customers in the source station does not make changes in the case, the IOS audit problem solved. And Pat Cloud can for you in the original IPV4 network without modification, to help the new IPV6 network compatible with IPV4, to achieve simultaneous compatibility IPv4 and IPV6 two networks, and Pat Cloud in Hong Kong for the first time to access IPV6, and formally developed to customer use, and at the same time to upgrade the other node components. At present, some domestic nodes have already done the final test on the IPV6 node. IPV6 will soon be supported on more nodes, giving customers a faster and more secure access experience.
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