RFC 9946 - The UDP Speed Test Protocol (UDPSTP) for One-Way IP Capacity Metric Measurement
- Status: Proposed Standard
- Published: April 2026
- Stream: IETF
- Errata: RFC Editor Errata
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.
Contents
- 1. Introduction
- 2. Conventions and Terminology
- 3. Scope, Goals, and Applicability
- 4. Protocol Overview
- 5. Requirements, Security Operations, and Optional Checksum
- 6. Test Setup Request and Response
- 7. Test Activation Request and Response
- 8. Test Load Stream Transmission and Measurement Status Feedback Messages
- 9. Stopping a Test
- 10. Operational Considerations for the Measurement Method
- 11. Security Considerations
- 12. IANA Considerations
- 13. References
- Appendix A. KDF Example (OpenSSL)
- Acknowledgments
- Authors' Addresses
Related Resources
- Official Text: RFC 9946
- Official Page: RFC 9946 DataTracker
- Errata: RFC Editor Errata