"At first, I thought this was just an experiment, and it was enough to do experiments with 4.3 billion IP addresses." He said, "Who knows how much space is needed?"
-"Father of the Internet" Wenton Surf
Winton Surf, known as the "Father of the Internet", pointed out recently that global IP addresses are about to be exhausted within "a few weeks."
This sentence is by no means sensational. Since the Internet must allocate exclusive IP addresses to any terminals connected to the network, with the diversification of network terminals, Internet IP address allocation pressure is increasing. The final result of this pressure is that all Internet IP addresses are used up.
4.3 billion addresses are running out
According to Australian media reports, Winton Surf, who helped set up the Internet and connected the global computer, pointed out that the 4.3 billion IP addresses he created were almost used up, which was his "mistake."
He said: "At first I thought it was just an experiment, and it was enough to do experiments with 4.3 billion IP addresses." He said, "Who knows how much space is needed?"
Joseph is currently the vice president and chief Internet consultant of Google Inc. in the United States. He created the Internet communication protocol "IPv4" in 1977 to allow computers around the world to connect to each other. It is reported that this was part of the experiment he conducted while serving in the US Department of Defense.
Joseph said he never expected this to become an "endless" experiment.
An IP address is a series of numbers assigned to each computer, website, or other networked device. Each IP address is unique. As mobile terminals such as notebooks, tablets, and smart phones enter the Internet, digital congestion is triggered. American Google engineer Lorenzo Coliti described on the 22nd: "Sometimes, we are like driving a car against the wall."
Some experts predict that as operators and manufacturers provide users with more smart terminals, especially smart phones, the future demand for IP addresses will be ten times the current scale. (Xiao Shi)
Way out
Convert IPv4 to IPv6
Can have a lot of space
In fact, "the statement that the IP address will be used up" has appeared more than once. Ernesto Machado, the director of public relations for domain name registries in Latin America and the Caribbean, issued a warning in December last year: "The IP address of the Internet Center will be allocated in January 2011." "There were 4 batches allocated this week, and currently there are only 5 batches left unallocated. According to relevant resolutions, these 5 batches of IP addresses will be distributed to the world's 5 largest domain name registries.
"Each sand can have an IP address"
In order to solve this crisis, relevant technical experts are planning to use the updated version of the Internet communication protocol IPv6 to create trillions of IP addresses to solve the IPv4 address shortage problem.
It is understood that the currently used IPv4 protocol, that is, 4.3 billion addresses, has less than one address per person in the world, and the IPv6 protocol can provide a massive address space of 2 to the 128th power, which is exactly "36 zeros after 34" .
The concept of this number is that if there are 180 billion Internet users in the world, and each person has 180 billion Internet terminals, all of these terminals access the Internet at the same time, and there is still a surplus of IP addresses. Some people even claim that every grain of sand on the earth after IPv6 can have an IP address. (Xiao Shi)
future
Google, Facebook took the lead in remodeling in June this year
According to Xinhua News Agency, the International Internet Name and Number Assignment Company (ICANN), headquartered in the United States, is responsible for global Internet IP address allocation. Its function is similar to the vehicle management office of the highway traffic supervision department.
At this stage, this "network vehicle management office" allocates all IP addresses to the five major regions of the world. The IP addresses in some regions are less than the number of terminals. In the end, it can only be solved by the way that multiple terminals share one IP address, but this method not only Clamping the speed of the Internet also causes hidden security risks.
Baker Strom, president of the "Network Management Office", said that after the use of IP addresses, if the number of Internet end users continues to increase, there may be a situation where the network speed of users sharing IP addresses slows down, "but the Internet will not be paralyzed."
The protocol transformation from IPv4 to IPv6 is a huge project. Except that all end users must replace the router or modem that connects the terminal to the Internet, all websites and Internet operators must be completely transformed to provide an "entry" for IPv6 terminal access to the website .
The renovation project does not depend on the unilateral actions of the Internet name and number allocation company.
The 24 hours from 01:00 on June 8, 2011 GMT will be the first trial day of the IPv6 protocol system. At that time, websites such as the online search engine Google Inc. and the social networking site "Facebook" will be the first to start the IPv6 protocol system to provide testing and analysis platforms for users and engineers.
Take a deep breath, close your eyes, the world has the freshest oxygen ... Yu Quan's "Deep Breath" is well known to us, but as the environmental problems become more and more serious, the haze sky also increases, PM2.5 PM10 and so on Vocabulary has also been mentioned more and more, and air purifiers have quickly become popular on the market with this "air quality" trend. Along with this, the air-clean brand has sprung up, and various technologies are dazzling. Which ones are indeed effective and which are just tasteless propaganda? How does the Air Purifier bother us to get rid of pollution? And look at the editors for you.
Analysis of air purifier
The critical value of PM2.5 content is 75 μg / m3
The pollutants in the air mainly include soot, total suspended particulates, inhalable particulates (PM2.5) and fine particulates (PM10). The smaller the diameter of the particulates, the deeper the part that can enter the respiratory tract. 10 micron diameter particles It is deposited in the upper respiratory tract, and particles below 2 microns can penetrate 100% into the bronchiole and alveoli.
1k-5k air purifier prices vary greatly
The air purifier products on the market not only have various functions, but also have prices ranging from thousand yuan to tens of thousands. The pricing of imported products is generally higher than that of domestic brands. Except for the core technology of many brands, the promotion of purification effects is similar, and consumers need to choose according to demand.
The air quality standard of 74 key cities is only 4.1%
According to the data of the press conference held by the State Council Information Office on June 4, according to the new "Ambient Air Quality Standards", the six pollutants SO2, NO2, PM10, PM2.5, CO and O3 were evaluated, 74 new standards In the first phase of monitoring and implementation, the proportion of cities that met the ambient air quality standards was only 4.1%, and the other 256 cities implemented the old air quality standards, and the proportion of cities that met the standards was 69.5%.
Air purifier sales increased by 90.5% compared with last year
According to a report recently released by the China Electronics and Information Industry Development Institute, due to the haze weather, air purifiers have become the most concerned home appliance products, with sales of nearly 2.4 million units nationwide last year, a year-on-year increase of 90.5%; retail The amount reached 5.6 billion yuan, a year-on-year increase of 105.9%.
HEPA filter needs to be replaced in March
The filter of the air purifier is the same as the filter of the water purifier, and it is not effective for a long time. After long-term use, the accumulation of dust on the surface of the filter will also cause the filter to gradually fail. Therefore, when the haze is more serious, the non-washable HEPA filter needs to be replaced every three months.
Merchants claim that the purification rate is more than 99% for the concept of stealing
99% or even 99.99% seems to have become a slogan for many air purifiers on the market. Many brands of products promote their high removal rate of PM2.5 and formaldehyde. In fact, this kind of publicity is more of a kind. The slogan of stealing the concept, the removal rate of 99% is the effect of the material itself on PM2.5 and formaldehyde, not the effect of actually running in space.
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