Japan's KDDI Deploys Disaggregated Backbone Routers, Aiming for 50% Cost Reduction
2026-06-10 10:07
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en.Wedoany.com Reported - Japanese operator KDDI has officially launched Distributed Disaggregated Backbone Router (DDBR) technology on its domestic network, which can reduce network equipment deployment costs by approximately 50%.

Virtual Network

Instead of using traditional large proprietary chassis-based routers, KDDI employs a series of small off-the-shelf devices working together to form a logical router. This design follows KDDI's long-standing open architecture philosophy, such as its practices in Open Radio Access Networks (RAN). Based on the open DDBR, operators can gradually scale capacity as traffic grows while avoiding lock-in to a single vendor. Additionally, KDDI leverages the open-source OpenConfig project to create a vendor-neutral network device configuration method, further ensuring the feasibility of a multi-vendor design.

KDDI stated that DDBR, as part of core network capacity expansion, enhances flexibility in vendor selection and network design. In a statement, the company said the architecture supports fine-grained, on-demand capacity scaling aligned with traffic demands, eliminating reliance on proprietary vendor-specific systems and significantly enhancing flexibility in vendor selection and network design. KDDI views the DDBR architecture as a fundamental redefinition of how backbone networks are built and expanded, shifting from monolithic systems to distributed, software-driven infrastructure.

Chassis-Based vs. Cluster-Based: Backbone Router Architecture Models | KDDI Corp

KDDI has been researching and developing DDBR technology for several years, starting around 2020 with the development of open, disaggregated routing technology. In 2023, the company completed the initial commercial deployment of disaggregated routers as internet gateway peering routers. In 2025, KDDI, in collaboration with DriveNets (whose software runs alongside UfiSpace hardware at major backbone sites), completed technical verification of the proposed cluster to accelerate the deployment process.

KDDI plans to complete the nationwide full deployment of DDBR by the end of fiscal year 2027. The company commits to leveraging operational experience from the DDBR deployment to further accelerate network openness, fostering a multi-vendor ecosystem while strengthening next-generation network infrastructure to support the rapid expansion of AI-driven workloads and data-intensive services across various industries.

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