RFC 9951 - Export of Delay Performance Metrics in IP Flow Information Export (IPFIX)

• Status: Proposed Standard
• Published: April 2026
• Stream: IETF
• Errata: RFC Editor Errata

Abstract

This document specifies new IP Flow Information Export (IPFIX) Information Elements to export the On-Path delay at each Operations, Administration, and Maintenance (OAM) transit and decapsulating nodes. The On-Path delay is defined as the delay between the OAM header encapsulating node and each OAM header transit and OAM header decapsulating nodes. This delay measurement is computed by an On-Path Telemetry protocol and is exported by the IPFIX process.

Contents

• 1. Introduction
• 2. Terminology
• 3. Solution
• 4. Performance Metrics
• 5. Use Cases
• 6. IANA Considerations
• 7. Operational Considerations
• 8. Security Considerations
• 9. References
• Appendix A. IPFIX Encoding Examples
• Acknowledgements
• Authors' Addresses

Related Resources

• Official Text: RFC 9951
• Official Page: RFC 9951 DataTracker
• Errata: RFC Editor Errata