73 Gb / s - this is the new absolute record for TCP data rate
Welcome to iCover Blog Pages! The rapidly growing demand for the transfer of large amounts of data is a significant trend of our time and a powerful incentive for the development of information network infrastructure. Simultaneously with the expansion of the geography of communications, the throughput of the main communication channels is growing: 10 - gigabit network channels are replaced by 100 - gigabit ones. And here the question of the efficiency of using the sharply increased channel capacity potential is faced with the limitations of the existing TCP (Transmission Control Protocol) data transmission technology, the upper speed bar of which until recently was limited to a record value of 29 Gb / s. A group of specialists from Japan managed to develop an addition to the existing protocol, which allowed to increase the existing value almost threefold.
TCP technology, one of the main protocols on the basis of which the global Internet worked and continues to work, was developed back in 1974. The experts explained the popularity of TCP technology by the technical possibility of guaranteed data delivery with notification to the sender of their receipt, which could not be provided via UDP. Having demonstrated a sufficiently high “margin of safety”, the TCP protocol coped with its basic tasks at speeds calculated in kilobits, and somewhat later - in megabits and tens of megabits. The protocol demonstrated quite satisfactory results when crossing the bandwidth mark of 100 and 1000 Mbps.
Today, when leading-edge providers are already transitioning from 10 to 100 Gbit / s with the capabilities of the TCP protocol, the bandwidth that was not originally designed for such indicators is no longer enough. The record value of the data transfer rate via TCP / IP protocol, recorded until the last moment with encoding redundancy of not more than 50%, was 29 Gbit / s (97.7% of theoretically justified). It is clear that in networks capable of broadcasting up to 100 Gbps every second, such indicators look rather modest.
A group of researchers at the University of Tokyo managed to resolve the existing contradiction by proposing a peculiar modification of the TCP protocol, which they called LFTCP (Long Fat pipe TCP). Using the new technology allowed transferring data through the existing 100 - gigabit channels of the TransPAC network of the American company Pacific Wave at a speed of 73 Gb / s, thus using the network bandwidth by almost ¾. At the same time, the “spirit and letter" of the TCP protocol itself on the end-user side has not practically changed.
PCs participating in the project (left) and experimental router
In an experiment on November 16-17 this year, data was transferred from Austin (in central Texas) to Tokyo, separated by 21,153 km from each other with a delay of 296 milliseconds.
Record-transfer route
Hardware and software configuration
It should be noted that the configuration of the terminal equipment located at the transmit-receive points was the most common. The data was processed by Core i7-6770K processors, the Mellanox Co. ConnectX®-4 card was used as the network adapter, and CentOS Linux 7.1 was used as the operating system. The specialists measured the throughput using the iperf3 package. It is important that the transmission system, as the developers note in their press release, used the LFTCP protocol, host - standard TCP.
The equipment used in the experiment and the routing scheme
Confirming the operability of the principles of the proposed technology at the level of a specific result is of crucial practical importance, since it allows you to significantly expand the limits of volumes and speeds of transmitted data, thereby determining the direction of the Internet, at least several years in advance. It is very important that the new LFTCP protocol is available with open source code.
One of the areas where such speeds and volumes of information transfer may be in demand is science. So one of the projects of the University of Tokyo related to biology, according to experts, will require a bandwidth of 50 Gbit / s for the full processing of useful information. And this is just one example of a process that requires the processing of colossal data arrays and their translation at speeds of tens of gigabits, where LFTCP technology may soon be very popular. And, judging by the forecasts of experts at the University of Tokyo , the need for Long Fat pipe TCP capabilities will grow in proportion to the development of the rapidly growing process of internationalizing scientific research.
Dear readers, we are always happy to meet and wait for you on the pages of our blog. We are ready to continue to share with you the latest news, review articles and other publications and will try to do our best to make the time spent with us useful for you. And, of course, do not forget to subscribe to our columns . Our other articles and events
TCP technology, one of the main protocols on the basis of which the global Internet worked and continues to work, was developed back in 1974. The experts explained the popularity of TCP technology by the technical possibility of guaranteed data delivery with notification to the sender of their receipt, which could not be provided via UDP. Having demonstrated a sufficiently high “margin of safety”, the TCP protocol coped with its basic tasks at speeds calculated in kilobits, and somewhat later - in megabits and tens of megabits. The protocol demonstrated quite satisfactory results when crossing the bandwidth mark of 100 and 1000 Mbps.
Today, when leading-edge providers are already transitioning from 10 to 100 Gbit / s with the capabilities of the TCP protocol, the bandwidth that was not originally designed for such indicators is no longer enough. The record value of the data transfer rate via TCP / IP protocol, recorded until the last moment with encoding redundancy of not more than 50%, was 29 Gbit / s (97.7% of theoretically justified). It is clear that in networks capable of broadcasting up to 100 Gbps every second, such indicators look rather modest.
A group of researchers at the University of Tokyo managed to resolve the existing contradiction by proposing a peculiar modification of the TCP protocol, which they called LFTCP (Long Fat pipe TCP). Using the new technology allowed transferring data through the existing 100 - gigabit channels of the TransPAC network of the American company Pacific Wave at a speed of 73 Gb / s, thus using the network bandwidth by almost ¾. At the same time, the “spirit and letter" of the TCP protocol itself on the end-user side has not practically changed.
PCs participating in the project (left) and experimental router
In an experiment on November 16-17 this year, data was transferred from Austin (in central Texas) to Tokyo, separated by 21,153 km from each other with a delay of 296 milliseconds.
Record-transfer route
Hardware and software configuration
It should be noted that the configuration of the terminal equipment located at the transmit-receive points was the most common. The data was processed by Core i7-6770K processors, the Mellanox Co. ConnectX®-4 card was used as the network adapter, and CentOS Linux 7.1 was used as the operating system. The specialists measured the throughput using the iperf3 package. It is important that the transmission system, as the developers note in their press release, used the LFTCP protocol, host - standard TCP.
The equipment used in the experiment and the routing scheme
Confirming the operability of the principles of the proposed technology at the level of a specific result is of crucial practical importance, since it allows you to significantly expand the limits of volumes and speeds of transmitted data, thereby determining the direction of the Internet, at least several years in advance. It is very important that the new LFTCP protocol is available with open source code.
One of the areas where such speeds and volumes of information transfer may be in demand is science. So one of the projects of the University of Tokyo related to biology, according to experts, will require a bandwidth of 50 Gbit / s for the full processing of useful information. And this is just one example of a process that requires the processing of colossal data arrays and their translation at speeds of tens of gigabits, where LFTCP technology may soon be very popular. And, judging by the forecasts of experts at the University of Tokyo , the need for Long Fat pipe TCP capabilities will grow in proportion to the development of the rapidly growing process of internationalizing scientific research.
Dear readers, we are always happy to meet and wait for you on the pages of our blog. We are ready to continue to share with you the latest news, review articles and other publications and will try to do our best to make the time spent with us useful for you. And, of course, do not forget to subscribe to our columns . Our other articles and events
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