OCP Summit 2025: The Open Future of Networking Hardware for AI
10/14/2025 · Jasmeet Bagga, Tian Fang, Ravindra Sunkad, Rohit Puri, Olaf Moeller, Lingjun Wu, Vignesh Vijayanath, Vimal Vasudevan, Dharmesh Jani
What this post added
This post details Meta's advancements in open networking hardware for AI training clusters, presented at OCP Summit 2025. It introduces the evolution of Disaggregated Scheduled Fabric (DSF) to a dual-stage architecture supporting larger AI clusters, a new Non-Scheduled Fabric (NSF) architecture for massive AI clusters like Prometheus, and new OCP switch platforms like Minipack3N based on NVIDIA's Spectrum-4 ASIC. It also highlights advancements in optical interconnects (2x400G FR4 LITE, 400G/2x400G DR4) and the launch of the Ethernet for Scale-Up Networking (ESUN) initiative, underscoring Meta's leadership in driving open, scalable, and interoperable networking solutions for AI infrastructure.