Nokia Adopts OpenAI-Developed MRC Protocol to Boost AI Networking
The networking giant is leveraging an open standard to eliminate bottlenecks and maximize GPU efficiency in high-demand AI clusters.
Nokia is adopting the Multipath Reliable Connection (MRC) protocol to optimize the coordinated network fabrics required for modern AI. The move aims to ensure data flows at "race speed" to meet the extreme throughput and reliability demands of large-scale AI workloads.
According to industry reports, MRC is an open standard developed by OpenAI with contributions from other technology leaders, including Microsoft, NVIDIA, and AMD, via the Open Compute Project (OCP). By supporting this protocol, Nokia intends to optimize data flow and reliability specifically for AI training and inference tasks. The technology utilizes multipath routing—often referred to as packet spraying—to distribute data across the network fabric, ensuring high-speed delivery while minimizing the risk of congestion.
The AI Networking Challenge
AI model training and inference require massive data throughput and extremely low latency to function efficiently. Traditional networking architectures often struggle with congestion and packet loss when handling these volumes. In a distributed AI cluster, even minor network delays or dropped packets can create significant bottlenecks, forcing expensive GPU resources to sit idle while waiting for data to arrive, which ultimately slows down the training of large-scale models.
Impact on AI Clusters
If successfully implemented, the shift to MRC could drastically reduce these bottlenecks within AI clusters. By ensuring that data is delivered reliably and at maximum speed across the fabric, the protocol allows for more efficient utilization of compute resources. This reliability is critical for the stability of the training process, where consistent data delivery is the primary driver of overall performance and time-to-market for new AI models.
The Path Forward
As AI workloads continue to scale in complexity, the industry is moving toward open, coordinated standards to replace proprietary networking silos. The adoption of MRC by Nokia signals a broader trend toward the OCP-led evolution of Ethernet for AI. Observers will now be watching for real-world performance benchmarks to see how much MRC reduces training times compared to traditional routing methods.