Postcard-based On-Path Flow Data Telemetry

The information below is for an old version of the document
Document Type Expired Internet-Draft (individual)
Authors Haoyu Song  , Tianran Zhou  , Zhenbin Li  , Jongyoon Shin  , Kyungtae Lee 
Last updated 2020-10-15 (latest revision 2020-04-13)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The document describes a variation of the Postcard-Based Telemetry (PBT), the marking-based PBT. Unlike the instruction-based PBT, as embodied in [I-D.ietf-ippm-ioam-direct-export], the marking-based PBT does not require the encapsulation of a telemetry instruction header so it avoids some of the implementation challenges of the instruction-based PBT. This documents discuss the issues and solutions of the marking-based PBT.


Haoyu Song (
Tianran Zhou (
Zhenbin Li (
Jongyoon Shin (
Kyungtae Lee (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)