There are big moves about IPv6 countries! Come and take a look at what the action plan says~

With the beginning of the dog days, Hangzhou is like being suddenly thrown on a charcoal stove and a high-temperature toilet without air conditioning, completely severing Ergouzi's joy of fishing with pay. Feeling desperate, Er Gouzi can only painfully change his fishing location to a snack corner with the air-conditioning open. "Hey, I really don't like the snack corner. It will make me fat." Ergouzi turned on the phone while Versailles. Oncoming was a report about the Ministry of Industry and Information Technology and the Office of Cyberspace Affairs. Action plan (2021-2023)" news.

This notice, in short, is to vigorously promote my country's large-scale deployment of IPv6. We must know that as of November 2020, the number of active IPv6 users in my country has reached 435 million, and IPv6 address allocation is already the world's number one. What is the magic power of this IPv6 that deserves to be promoted so vigorously? Ergouzi decided to take a closer look.

What is IPv6

In fact, seeing the name IPv6, Ergouzi made a bold assumption. After all, the IP address (referred to as "IP") is the Internet Protocol, which is the core component of the Internet Protocol. It is the uniquely identifiable address of a device (such as a computer, web server or printer, etc.) in an internal or external network.

Since IP is included in the IPv6 name, it must be inseparable from the IP address.

Ergouzi opened Baidu and entered IPv6. Sure enough, Du Niang told Ergouzi that the full name of IPv6 is Internet Protocol version 6, which is the sixth version of the Internet Protocol. It is the next-generation IP protocol used to replace IPv4.

what? Does anyone not know what IPv4 is? No way? No way?

Don't fight, don't fight, Ergouzi, this will give you a good explanation.

The hard work IPv4

IPv4, the full name of Internet Protocol version 4, is to assign an IP to each network and each host. The IP address is a 32-bit binary number, and there are 2^32 addresses. This number may seem very large at first glance, but in fact, as early as November 26, 2019, the European Network Coordination Center (RIPE NCC), which is responsible for the allocation of Internet resources in the United Kingdom, Europe, the Middle East and parts of Central Asia, announced that IPv4 addresses have been exhausted. .

The exhaustion of IPv4 addresses means that new devices will no longer be able to connect to the Internet. In this era of interconnection of all things, this is simply unimaginable. Anyway, Ergouzi just thinks about it.

Of course, this is inevitably impossible. We can reuse and recycle unused IPv4 addresses through ISPs, or use network address translation technology to enable new devices to connect to the Internet. However, the two methods are not a cure for the symptoms. If it were not for the emergence of IPv6, the 80 million bids in 2021 might not be blue-eyed white dragons, but mobile phones that can connect to the Internet.

IPv6 VS IPv4

Well, not poor, back to our original topic IPv6. As we mentioned above, IPv4 uses a 32-bit address length, which can provide us with 2^32 approximately 4.3 billion addresses, while IPv6 uses a 128-bit address length, which provides us with 2^128 addresses, which can be said to be free of any Limited supply address. It is conservatively estimated that the actual number of addresses that IPv6 can allocate is enough to allocate more than 1,000 addresses per square meter of the entire earth. It is no exaggeration to say that IPv6 can assign an IP address to every grain of sand in the world.

If it is just a large number, then IPv6 is not worthy of such a large-scale promotion. Compared with IPv4, it has the following advantages:

• faster transmission speed

IPv6 uses a fixed header, unlike IPv4, which carries a lot of lengthy data. The short header improves the efficiency of network data forwarding. And because the IPv6 routing table is smaller and the aggregation capability is stronger, it ensures that the data forwarding path is shorter, and the forwarding efficiency is greatly improved. IPv6 also eliminates most of the common address conflict problems in IPv4, and provides equipment with More simplified connection and communication.

• transmission method is more secure

IPv4 has always been full of criticism for its security. Although websites that open SSL certificates are now the mainstream, there are still a large number of websites on the market that do not use HTTPS. And IPv6 is built on the basis of security from beginning to end. It authenticates and encrypts data at the network layer and verifies IP packets, providing users with data security from client to server, ensuring that data is not hijacked.

• is more mobile friendly

Compared with IPv4, the IPv6 protocol is more friendly to mobile terminals. It can enhance the mobile characteristics, security characteristics, and routing characteristics of mobile terminals, while reducing the difficulty and investment of network deployment. IPv6 adds automatic configuration and reconfiguration technology, plug-and-play, and automatically adds, deletes, and updates configuration for information such as IP addresses, which improves the manageability of IPv6.

• Full network support, no need to configure

IPv6 is so good, but the difficulty of upgrading IPv6 is not small. Because IPv6 and IPv4 are two completely incompatible protocols (compatibility can be achieved in a very small number of specific scenarios), if you want to upgrade from supporting IPv4 to IPv6, whether it is an application client, server terminal, router, etc., you must Supporting IPv6 at the same time can solve the problem. The cost of this upgrade is huge.

At this time, I have to mention the network-wide IPv6 support that Youpaiyun has already achieved. Youpaiyun began to invest in IPv6 construction in 2016 to provide customers with intelligent IPv6 services. By 2019, Youpaiyun has completed the deployment of IPv6 resources on the entire network and has become the leading cloud service provider supporting IPv6 on the entire network in China. Moreover, YouPaiYun IPv6 is open by default. You only need to use CDN-accelerated one-key configuration. You do not need to configure the IPv6 source site or provide a special IPv6 domain name. You only need to add the corporate domain name CNAME to YouPaiYun. Very convenient and easy to use. Don't come and give it a try~

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