VIAVI Solutions announced the TestCenter D2 1.6T Appliance, a new Ethernet test platform designed to validate next-generation AI data center networks operating at 1.6T speeds. The system targets hyperscalers, cloud providers, and network equipment manufacturers preparing for large-scale deployments of 1.6T Ethernet fabrics that support emerging AI workloads.
The new platform provides high-capacity traffic generation and analysis capabilities to test network performance, interoperability, and reliability at full scale. VIAVI designed the appliance to emulate large AI workloads and validate multi-vendor environments, enabling network operators to assess performance across switching, optics, and interconnect technologies before deployment. The TestCenter D2 also supports multi-rate operation across evolving network architectures, reflecting the industry transition from 800G systems toward 1.6T Ethernet infrastructure.
VIAVI plans to showcase the TestCenter D2 1.6T Appliance at booth 1239 during OFC 2026 in Los Angeles. The system also received a 4.0 score in the 2026 Lightwave Innovation Reviews, reflecting early industry recognition for the platform’s capabilities in validating next-generation Ethernet fabrics for AI-scale infrastructure.
- TestCenter D2 platform designed for validation of 1.6T Ethernet networks used in hyperscale and cloud data centers
- Supports large-scale traffic generation and analysis to emulate AI workloads and stress test switching fabrics
- Enables multi-vendor interoperability testing for emerging AI cluster architectures
- Provides multi-rate operation to support evolving network designs and new optical interconnect technologies
- Demonstration scheduled at OFC 2026 (Los Angeles Convention Center, March 17–19)
Tom Fawcett, Senior Vice President and General Manager of Lab and Production at VIAVI, said: “Current validation technologies are struggling to keep pace with the unprecedented performance and scale requirements of AI and next-generation cloud architectures… The launch of the TestCenter D2 1.6T Appliance helps change this, giving customers the confidence they need in the speed, reliability and interoperability of new 1.6T-class networks.”
🌐 Analysis
The transition from 800G to 1.6T Ethernet is rapidly reshaping the AI data center ecosystem, particularly for backend cluster fabrics connecting GPUs and accelerators. Test and validation vendors such as VIAVI, Keysight, EXFO, and Spirent are racing to provide tools capable of emulating full-scale AI traffic patterns and validating interoperability across multi-vendor hardware stacks.
VIAVI has steadily expanded its AI infrastructure test portfolio, including earlier 1.6T capabilities in the ONE LabPro platform and additional optical validation tools showcased at OFC. As hyperscalers deploy increasingly large AI clusters based on 224G electrical lanes and 1.6T optical modules, comprehensive traffic generation and protocol validation systems are becoming a critical step in accelerating production rollouts and ensuring network reliability at scale.