Spirent and Juniper Conduct First Public UET Test for UEC

Spirent Communications, a provider of test and assurance solutions for next-generation devices and networks, and Juniper Networks (Juniper) have successfully completed the first public demonstration of Ultra Ethernet Transport (UET), achieving a significant milestone in the evolving Ultra Ethernet Consortium (UEC) ecosystem.

The demonstration took place at Interop2025 Tokyo, where Spirent, Juniper and Spirent’s long-time partner in Japan, Toyo Corporation, jointly generated and forwarded UET traffic in a production test network (ShowNet) utilizing Spirent B3 800G appliances and Juniper QFX 5240-64OD switches. The test topology also ran RoCEv2 traffic, demonstrating seamless coexistence and interoperability, and was jointly awarded the prestigious Interop ShowNet Special Award. The Juniper switches with 800G interfaces successfully recognized and forwarded all traffic types, proving their readiness for UET-based deployments.

“As hyperscalers continue to prioritize open, interoperable solutions for AI/ML backend networking, the importance of the UEC initiative and its new approach to delivering AI and HPC performance is becoming increasingly clear. As the consortium moves closer to releasing its first official specifications, Spirent and Juniper are driving progress through rigorous real-world validation, playing a vital role in strengthening and refining the evolving ecosystem.”

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“We are honored to receive this prestigious award together with Spirent. This win is a testament to the strength of our partnership and joint innovation in high-performance AI-driven data center networking. Juniper’s data center solutions, at the core of its AI-native networking platform, continue to lead the industry in ease of use, performance and open architecture. Validating the performance and interoperability of modern transport standards like UET is essential to ensure next-generation infrastructure can meet the evolving demands of AI-driven networking.”

This successful public demonstration highlights Spirent’s capabilities to emulate and test the latest UET transmission standards and Juniper‘s ability to support evolving Ethernet technologies, enabling customers to future-proof validation of AI scalability and Ultra Ethernet performance.

“The rapid growth of AI applications and workloads continues to create challenges for the industry, and this public demonstration demonstrates our commitment to addressing these challenges together with our industry partners,” said Masatoshi Nishihara, General Manager, Spirent Japan.

SOURCE: PRTimes