TestCenter D2 1.6T Appliance

Revolutionary AI Data Center Testing Platform

The VIAVI D2 1.6T validates AI infrastructure without the cost of GPU server farms. It generates up to 6.4Tbps of realistic AI traffic across 1.6T to 100G on a single 4-port platform.

Purpose-built for modern AI data centers, the D2 emulates up to 128 GPUs and NICs per port, reproduces real GPU collective communication patterns, validates congestion control under load, and scales to hyperscale AI fabrics, cutting validation cost and deployment time.

The AI Infrastructure Gap

Traditional testing tools have reached their limit. The D2 1.6T closes the three critical gaps costing AI data centers time and money:

• Traffic Authenticity Gap
  Unlike standard tools that miss MPI-based collective patterns (All-to-All, Ring-AllReduce), the D2 emulates real GPU workloads to ensure your fabric is truly AI-ready.
• Congestion Control Gap
  While most tools lack granular control, the D2 provides hardware-level per-flow and port-level validation for DCQCN and PFC under realistic AI loads.
• The Scale/Cost Gap
  Move beyond CapEx-heavy GPU server farms. The D2 delivers repeatable, production-grade certification scenarios at a fraction of the cost of real GPU clusters.

VIAVI D2 Advantage: Hyperscale Validation Without Compromise

While others test components, we validate the entire ecosystem at production scale.

• Industry-Leading Scale: Support up to 1,024 ports with built-in synchronization, creating test environments 32× larger than competing solutions without external timing gear.
• True Mixed-Speed Validation: A single platform to validate your entire 224G and 112G PAM4 roadmap, from 1.6T spines to 100G legacy ports.
• Deterministic Lossless Metrics: Deep hardware-level PFC and congestion measurement, ensuring zero-packet-loss performance for mandatory AI workloads.