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Enabling AI Networking @ Scale with Multi-path Reliable Connections (MRC)#

OCP Global Summit 2026 digest Program Core pick 12–15 October 2026

Abstract Session recording Materials

Guohan Lu (OpenAI), Eric Spada (Broadcom Inc.)

  • Why: MRC is now a ratified OCP specification co-authored by OpenAI and Broadcom — a concrete, open alternative for AI-fabric transport that a PM in this space will need to track against MetaRoCE and Falcon.
  • What: MRC combines multipath transport, adaptive load balancing, reliable delivery, and path-aware congestion management to keep utilization high and tail latency low in fabrics of hundreds of thousands of XPUs (from abstract only).
  • How: Multipath reliable connections at the transport layer with awareness of per-path congestion state; the OCP MRC 1.0 document is the spec itself, which the session walks through.
  • Where applicable: Designed for open Ethernet-based AI infrastructure broadly, not one operator's fabric; requires switch/NIC support for the MRC semantics (Broadcom involvement signals merchant-silicon intent).