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SUE-T - An Ethernet transport for Scale-Up Networking#

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

Abstract Recording

Tom Emmons (Arista Networks), Karen Schramm (Broadcom)

Play the recording: SUE-T - An Ethernet transport for Scale-Up Networking

  • Why: ESUN defines the network requirements; SUE-T defines what actually rides on it — the semantics of moving memory transactions between XPUs over Ethernet. This is the layer where scale-up Ethernet becomes a real RDMA-class competitor.
  • What: The Scale-up Ethernet Transport framework: low-latency, high-bandwidth connectivity where a SUE-T instance moves memory transactions between XPUs across rack/multi-rack clusters (from abstract only).
  • How: An Ethernet-based transport protocol suitable for deployment over ESUN-defined networks; the session walks the specification and how it meets scale-up's latency and bandwidth demands for next-gen XPU designs.
  • Where applicable: General technique (open spec, not operator-specific), but requires XPU and switch support for the transport; relevant to anyone evaluating open alternatives to proprietary scale-up fabrics.