SURF.net news

Author: Robin Janssen

  • SURFnet Infinity: approach and first steps

    SURF is building the new generation of the SURF network: SURFnet Infinity. The successor to SURFnet8. Previous generations, from SURFnet1 through SURFnet8, were heavily defined by the choice of a single network vendor. With SURFnet Infinity, SURF is opting for a vendor-independent architecture based on open standards, so that the network can continue to evolve without restriction: hence the name Infinity, and not SURFnet9.

    Technical Product Manager Max Mudde previously wrote this article about it.

    In this article, you can read how the migration project was set up, what is happening now, and what steps will follow.

    What we already did

    Last year, we made two important decisions regarding the configuration of this new network. HPE was selected for the backbone and border domains, and Salumanus for the optical transceivers. Construction is now beginning: the core, IP peering, and metro sites. The optical layer and access sites will follow at a later stage.

    What is happening now

    Through July 2026: construction of new core

    The core of the new network is being built at four new core locations: Delft, Eindhoven, Amsterdam, and Zwolle. During the same period, we are implementing redundancy on the fiber optic routes between these locations, ensuring that every core location is fully redundantly connected to the other three.

    This construction is proceeding entirely parallel to the existing SURFnet8. There is no impact on current services.

    From July 2026: IP peering migration

    Starting in July, we will transfer IP peering—SURF’s external internet connectivity—to the new network. To do this, we will install new peering routers that will be redundantly connected to both SURFnet8 and the new network. Subsequently, we will migrate the peering functionality in phases from the current SURFnet8 routers to the new routers.

    From September 2026: metro locations migration

    Starting in September, we will migrate the metro locations step by step. At each location, we will install two new routers: one router that will be redundantly connected to two core locations and to which the access rings will be linked, and one router to which existing access ports will be migrated.

    Impact on members

    The development of the new core has no impact on service delivery.

    The migration of the metro locations requires slightly more effort: during the work, access rings and access ports will be temporarily interrupted and subsequently connected to the new hardware. As a result, institutions will temporarily have less redundancy, while service delivery remains available.

    The result is a connection to a network with higher capacity, better fault isolation, and more flexibility for future upgrades.

    Each member will receive its own ticket prior to the work, containing an explanation of the schedule and the expected impact.

    More information and updates

    All project information regarding SURFnet Infinity can be found on the project page on the wiki. More project updates and a number of technical blogs regarding the setup of the new network will follow in the coming months.

  • SURF partners with HPE and Salumanus for multi-vendor and high-performance network design

    SURF has selected HPE to deliver solutions for the backbone and border network domains, and Salumanus is selected to deliver the coherent transceivers. Together with partner Nomios we will implement the next generation SURF network infrastructure, designed to meet the rapidly growing demand for bandwidth, predictability, and resilience across the Netherlands’ research and education community.

    To be able to meet future challenges, SURF needs to innovate their network continuously. For that purpose, it has designed a new network architecture and will start replacing the network in various phases over the next few years. Within the new architecture, the SURF network delivers 800GE, 400GE and 100GE connectivity. Using OpenZR+ technology from Salumanus, SURF increases its backhauling capability, both in terms of bandwidth and distance.

    “This new architecture gives SURF exactly what our members need: higher capacity, predictable performance, stronger security and the freedom to scale without being tied to a single vendor. It allows us to upgrade faster, operate the network more efficiently and ensure that every institution benefits from a platform that is ready for the demands of the next decade.” Said Harold Teunissen, Head of Network & Infrastructure Services, SURF

    HPE Networking for backbone & border

    HPE delivers the backbone and border domains of the new SURF network with PTX Series Routers (PTX10008 and PTX10002-36QDD, with Express 5 silicon’s unparalleled power efficiency), connecting SURF’s IP peering and the NetherLight global exchange point. The solution includes HPE vRR (Networks virtual Route Reflector) for simplified routing management and scalability, as well as Corero comprehensive anti-DDoS capability to safeguard research and education traffic against large-scale cyberattacks—ensuring resilient, efficient and secure connectivity for critical scientific and academic applications.

    “HPE is proud to support SURF in building a resilient, high-performance network for the Netherlands’ research and education community. By delivering advanced routing, security, and data privacy solutions, we help empower local institutions to collaborate, innovate, and protect sensitive information”, commented Dobias van Ingen, EMEA CTO HPE Networking

    Salumanus technology  

    At the heart of this transformation is the migration of SURF’s existing CWDM-based access network to DWDM (Dense Wavelength Division Multiplexing) technology. This step is crucial to enable a smooth and scalable upgrade of existing links to 100G and higher capacities, ensuring that member institutions can benefit from next-generation optical performance.

    In parallel, the backbone network will be upgraded to 400G and 800G using IP over DWDM technology. This approach allows SURF to deliver ultra-high-speed connectivity, eliminating the need for separate transponder hardware, minimizing power consumption and space utilisation while significantly reducing capital and operational costs.

    “We are proud to support SURF in its mission to deliver world-class connectivity, our OpenZR+ technology and DWDM solutions will help build a network that is smarter, more efficient, and ready to meet the demands of the future.” Said Marcin Bala, CTO of Salumanus

    Continued collaboration with Nomios

    Nomios plays a key role as systems integrator in coordinating hardware purchasing and lifecycle management across suppliers and domains for the next generation of SURF network infrastructure. SURF has engaged Nomios to assist in selecting technology partners and executing the mini competition process on behalf of SURF. This collaborative model allows SURF to continuously innovate while maintaining maximum flexibility and vendor diversity.

    “We’re supporting SURF in selecting the right technology mix and keeping the multi-vendor model practical across all network domains. This next step in their architecture gives the research and education community in the Netherlands the bandwidth and predictability they need for the years ahead.” Said Mohamed El Haddouchi, Managing Director Nomios

    About SURF

    SURF is the IT cooperative of Dutch education and research institutions. The members, the owners of SURF, join forces to develop or procure the best possible digital services, work together on complex innovation issues and develop and share knowledge with each other.

    SURF designs, builds, and manages the national research and education network, the SURF network, that connects universities, research institutes, and other knowledge organisations.

    About Salumanus

    Salumanus provides advanced optical networking solutions across Europe, specialising in DWDM and transceiver technology. The company supports network operators, enterprises, and research networks in building flexible and cost-effective infrastructures.

    About Nomios

    Nomios is a European leader in secure networking and cybersecurity services and solutions. The company designs, implements, and manages resilient digital infrastructures, with a strong focus on innovation and long-term collaboration.