For the first time in the world, China Unicom has completed the verification of over 3000 km mass data wide area high-throughput lossless transmission

On May 16, China Unicom announced that it had successfully completed the world's first large-scale data wide area high-throughput lossless transmission verification with an actual transmission distance of more than 3000 kilometers. In the intelligent computing and supercomputing business scenarios, efficient and lossless transmission has always been a problem in the industry because a large amount of data cannot meet the timeliness requirements of 100M or Gigabit bandwidth transmission, and the cost of dedicated line transmission is too high.

This verification is based on China Unicom's backbone all-optical ROADM network and 169 backbone Internet covering the whole country, and is carried out under the typical "East Data West Computing" scenario of importing Shanghai intelligent computing business training data into Ningxia Zhongwei intelligent computing training cluster. The verification adopts innovative technologies such as "IPv6+", new transport layer protocol, long distance RDMA lossless transmission, and end network cooperative transmission. The actual transmission line length reached 3000 kilometers, creating many industry records.

Tang Xiongyan, Vice President and Chief Scientist of China Unicom Research Institute, said: "Through the task-based data transmission capability based on IP+optical network technology innovation, we have successfully achieved the goal of delivering terabytes of massive data in about one minute, which has solved the problem that low bandwidth transmission cannot afford to wait for days, and high cost of high bandwidth dedicated lines." This achievement provides new ideas and technical support for efficient transmission of massive data.

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