, June 18, when Google’s chief financial officer, Patrick skin chet (Patrick Pichette) claims that the technology giant will bring us home users data transmission speeds of up to 10 gb/SEC of Internet services, the rhetoric sounds like a science fiction is not reality, because compared with today’s home broadband service, Google ideas of this kind of high-speed network about 1000 times faster. But for the national aeronautics and space administration (NASA), the speed is too slow.
for home users from the United States, is through the public Internet data transmission; And compared with the national aeronautics and space administration is used by a known as “ESnet” shadow Network, it is “Energy Science Network” (Energy Science Network) acronym, the Network consists of a set of private pipeline, across the country to 91 gb/SEC of data transmission speed, similar networks in the known is the fastest.
the national aeronautics and space administration (NASA) will not be the speed of network services to the home users, but the agency is using the ultra fast network technology to explore the next wave of computing applications. ESnet is such a “test bed”, for scientists to explore new ideas, and then extended to commercial Internet. For researchers, it is a very important tool, can let them through this platform to handle by the Large Hadron Collider, false starts), and the Human Genome Project (the Human Genome Project) projects such as the generated huge amounts of data.
by the U.S. department of energy under the operation of ESnet, researchers need to through the mail way passed back and forth drive, just by the super fast network to exchange data. In short, ESnet is a “window”. From the window, people can see is the appearance of the computing world will eventually evolved into in the future. “Is our idea of the world, scientific findings should not be restricted by geography.” ESnet director Gregory (Gregory Bell Bell) said.
the first nationwide study computer network is the defense department’s ARPAnet, the network later evolved into the modern Internet. ARPAnet, however, is not the same in the network, the last one. In 1976, sponsored by the U.S. department of Energy has developed Magnetic Fusion Energy NETwork (Magnetic Fusion NETwork), today’s national Energy research center (NERSC) is an organic whole repeatedly with other research laboratory.
then, the U.S. department of Energy (doe) was created in 1980, another called “High Energy Physics” (High Energy Physics) network, in order to guide the particle Physics researchers in the laboratory. And with the increasing of the importance of the network, the U.S. department of energy official recognition to maintain multiple networks and meaningless, so will the two network as a whole, thus constituted ESnet today.
this network has experienced the evolution of advancing with The Times, the network based on the early earth and satellite links, and used today is 17 countries all over the United States department of energy laboratories and many other LABS (such as university research LABS, etc.) of optical fiber. ESnet and Internet2 – this is after the Internet commercialization, established in 1995 as the research personnel, a non-profit international networks – have been renting the “dark” fiber optic fiber (dark), which is the commercial Internet service providers (isps) in the late 1990 s the Internet bubble was set up by the excess network capacity.
in November last year, the national aeronautics and Space administration subordinates “high-end Computer network” (High End Computer Networking) team is made up of using ESnet network 91 gb/SEC of data transmission speed, the transmission is in Denver and located in Maryland green bell (NASA’s Goddard Space Flight Center in Greenbelt) (Goddard Space Flight Center in Greenbelt) between, is in the “real world” environment for the fastest an end-to-end data transmission.
in a long time ago, ESnet is capable of 10 gb/SEC of data transmission, at least in theory can be. Since 2010, the network equipment company has been providing 100 gb switch. But in actual use, long-distance transmission speed is much slower, this is because the data transmission in the Internet is not a straight line.
, for example, data transmission is more like the interstate highway system, and the less similar to the superhighway. If someone wants to through the interstate highway system drive from San Francisco to New York, so must be through the cities along the way; Similarly, if you want to through the Internet, or ESnet, transfer a file from San Francisco to New York, then the data will be flowing through multiple hardware system of the city.
in 2012, the national aeronautics and space administration by ESnet network between the Goddard space flight center to the university of Utah once 98 gb/SEC of data transmission. Earlier this year, alcatel-lucent and bt to 1.4 TB/SEC of data transmission speed set by the record, the transmission is in London and Ipswich school (Ipswich). However, in the two data transmission, between all have direct channel, and that in the real world is almost invisible in the network connection.
in the Internet or on ESnet network data transmission along every step is likely to encounter bottlenecks, and each network device must be ready to handle 100 gb transmission speed. Last November, “” high-end computer network team finally did it.
“the data transmission and the use of commercial off-the-shelf technology and keep the data in a large data network transmission ability.” Company sales director Tony said (Brocade), the company has made a record test equipment used by the network.
at the same time, the network is in some other way to promote the development of the most advanced technology. Researchers use ESnet to explore, called the “Oscars” (academy) of virtual network circuit, this circuit can be used to create a complex network, does not need to make complex changes in terms of hardware. At the same time, the researchers are also working to build “DMZ” network, the network could be implemented in the absence of traditional firewall security operation, so as to realize the data transmission speed of extremely fast.
these solutions is designed specifically for the few in number but large data transmission activities designed, compared with the commercial Internet is used for the transmission of large number but smaller. Even so, the commercial Internet company still can learn a lot from ESnet. XO Communications, telecommunications company has a 100 gb of backbone, the future is expected to have more companies to follow the footsteps of the XO.
although the near-term home users can’t have 10 gb/s data transmission speed, but the Internet backbone capacity increases will mean, though there will be more and more users will stream high-definition video and download large files, the phenomenon of network congestion has become less and less.
this is not ESnet stop. Bell said that the U.S. department of energy (doe) has been developed 400 gb networks, its long-term goal is to build 1 TB/s high speed network, that is, the data transmission speed about 100000 times is equivalent to today’s home network. Compared with Google grandiloquence, perhaps this is just the real science fiction novel.
source: tencent technology