Viavi: AI traffic pushes network testing to system-level validation

Viavi's Mike Jack told RCR Wireless that AI training generates sustained, synchronized all-to-all traffic between thousands of accelerators, making latency and packet loss critical. Testing is shifting from individual components to validating entire systems, with per-link speeds moving to 800G and 1.6T.

• AI training creates synchronized all-to-all traffic across thousands of accelerators
• Per-link speeds in AI fabrics are moving to 800G and 1.6T
• A single link failure can stall a distributed training job
• Validation shifts to workload emulation and digital twins