Export of Delay Performance Metrics in IP Flow Information Export
RFC 9951, “Export of Delay Performance Metrics in IP Flow Information Export”, is a Proposed Standard document published in April 2026 by T. Graf, B. Claise, A. Huang-Feng. The canonical text is published by the RFC Editor.
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.
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 9951 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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