Press release
CSC, Surf and Nokia reach 1.2 Tbit/S-data transfer to prepare a long distance network for new Lumi-AI
- Trial helps researchers to prepare the network for clusters of High Performance Computing (HPC) and AI factories that handle huge data sets and workload with high intensity.
- Results confirm that multi-domain, high-capacity data transfers in European research networks are both feasible and ready for the future.
June 4, 2025
Espoo, Finland-Nokia, CSC-IT Center for Science and Surf have successfully tested a quantum-optic optical compound connections with high capacity, more than 1.2 terabit per second (TBIT/s) between Amsterdam, the Netherlands and Kajaani, Finland with 3500 kilometers data. The test, which was carried out in May 2025, demonstrated the potential of Ultrasnelle, cross -border connectivity for research.
Tests were carried out along various routes, including the longest that include 4,700 km through Norway with a capacity of 1Tbit/s. To put this in perspective, 1 Tbit/s is sufficient to stream 200,000 Full HD films (at 5 Mbit/s) at the same time.
These results are particularly promising, because the research community is preparing for supercomputers and AI factories to come online – where reliable, scalable and secure connections are crucial for supporting some of the world’s largest data sets and most demanding workloads.
The test used a combination of real research data and synthetic data, directly transferred from disk to disk – from the facility of Surf in Amsterdam to the data center of CSC in Kajaani, in five production research and educational networks: Surf (the Netherlands), Nordunet (Nordic Backbone), Sikt (Sunet), Siktet Siktet (NorWay), Siktet Siket, Sunet, Sicket Sunet, Sunet, Sicket Sunet, Sunet (NorWay), Siktet (NorWay), Sicket (NorWay) and Sicket (NorWay) and Sicket (NorWay), and Sunet (NorWay), and Sunet (NorWay) and Siktet (NorWay) and Siktet (NorWay) and Sicket (NorWay) and Sicket (NorWay) and Sicket (NorWay) and Sicket (NorWay) and Sicket (NorWay) and sunet (NorWay) and Sunet. (CSC).
The network solution was based on Nokia’s IP/MPLS routing and quantum-safe optical network equipment. Nokia’s IP technology successfully demonstrated flexible Ethernet (Flexe) to accommodate “elephant flows”, or very large continuous data flows, and the optical transport technology with high capacity showed the ability to process mass data sets that are generated by HPCs over long distances.
With the exponential growth of research data, especially for training large-scale AI models, the need for resilient, high-throughput and safe connectivity is more critical than ever. This test confirms that multi-domain data transfers with high capacity in European research networks are both feasible and ready for the future. Testing an operational network connection over long distances offers unique insights into data transport and storage of large data volumes. The tests are crucial for improving the infrastructure for data-intensive research.
“We design research networks with future needs in mind. The data center of CSC in Kajaani Host all the Pan-European Lumi-Supercomputer and with the upcoming Lumi-Ai-Supercomputer and AI Factory come online, reliable and scalable data connections throughout Europe. Myyry, Senior Network, Senior Network, Senior Network, Senior Network, Senior Network, Senior Network, Senior Network, Senior Network, Senior Network, Senior Network, Senior Network, Senior Network, S
“As SURF, we are ready to take the next step in coordinating European supercomputers. These efforts offer future perspectives to train GPT-NL on Lumi or for a researcher to calculate Lumi on Lumi with very large datasets organized at Surf, such as the KNMI (the Royal Netherlands Meteorological Collaboration) that is again good for the through-outdoor interim of the goods for the Tussenoorological Collaborations for the Tussenoorological Tussenoorological Tussen Best for the Tussengeorological Collaborations for the Tussenoorological Tussenoorological Cut-of the Properations. create infrastructure for research and education, “said Arno Bakker, senior network specialist, surf.
“Due to groundbreaking tests such as these emphasize how advanced networks are fundamental to unlocking the full potential of AI and high-performance computing. This successful collaboration with CSC and Surf is proof of the innovation and leadership of the scientific community, and what is possible when we collaborate. As the network. IP/mpls.
Sources and additional information
Product page: 7750 Servicerouter
Product page: 1830 Photonic Service Switch (PSS)
Product page: 1830 Photonic Service Interconnect-Modular (PSI-M)
Webpage: Quantum -safe networks
About Nokia
At Nokia we create technology that helps the world to act together.
As a B2B technology -innovation leader we are groundbreaking networks that feel, think and act by using our work in mobile, fixed and cloud networks. Moreover, we create value with intellectual property and long -term research, led by the award -winning Nokia Bell Labs, which celebrates 100 years of innovation.
With real open architectures that seamlessly integrate into every ecosystem, our powerful networks create new opportunities for income and scale. Service providers, companies and partners Worldwide Trust Nokia to deliver safe, reliable and sustainable networks today – and to collaborate with us to create the digital services and applications of the future.
About CSC – IT Center for Science
CSC is a Finnish center of expertise in ICT that offers world -class services for research, education, culture, public administration and companies, to help them thrive and to benefit society. Csc.fi
Surfing
SURF is the ICT cooperative of Dutch Education and Research Institutions. The members, the owners of SURF, join forces to develop or obtain the best possible digital services, to work together on complex innovation problems and to develop and share knowledge with each other.
SURF actively cooperates with other European NRENS United in Géant and participates in global consortia such as the Advanced North Atlantic (ANA) and Asia Pacific Europe Ring (AER).
NETHERLIGHT, SURF’s Global Exchange Point (GXP) dedicated to research and educational data in Amsterdam connects comparable GXPs and advanced networks with high capacity for scientific and educational cooperation. The NETHERLIGHT GXP plays an important and crucial role in the Federation of Research and Education Networks Worldwide, also known as the Global Research and Education Network (Grens). http://www.surf.nl
Questions from media
Nokia Press Office
E -Mail: press.services@nokia.com
Nokia Media Relations
Sarah Miller
Telephone: +1 613-720-9716
E -Mail: sarah.miller@nokia.com
CSC Media Relations
Sanna Kostiainen
Telephone: +358 40 0712072
E -Mail: viesteinta@csc.fi
Surf spokesman
Tom Hoven
Telephone: +31 641 439 398
E -Mail: tom.hoven@surf.nl
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