The UDP Speed Test Protocol for One-Way IP Capacity Metric Measurement
RFC 9946, “The UDP Speed Test Protocol for One-Way IP Capacity Metric Measurement”, is a Proposed Standard document published in April 2026 by A. Morton, L. Ciavattone, R. Geib. The canonical text is published by the RFC Editor.
Abstract
This document addresses the problem of protocol support for measuring One-Way IP Capacity metrics specified by RFC 9097. The Method of Measurement discussed in that RFC requires a feedback channel from the receiver to control the sender's transmission rate in near real-time. This document defines the UDP Speed Test Protocol (UDPSTP) for conducting measurements as described in RFC 9097 and other related measurements.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9946 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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