Postcard-based On-Path Flow Data Telemetry using Packet Marking
draft-song-ippm-postcard-based-telemetry-09

Document Type Active Internet-Draft (individual)
Authors Haoyu Song  , Greg Mirsky  , Clarence Filsfils  , Ahmed Abdelsalam  , Tianran Zhou  , Zhenbin Li  , Jongyoon Shin  , Kyungtae Lee 
Last updated 2021-02-19 (latest revision 2020-10-30)
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IPPM                                                             H. Song
Internet-Draft                                    Futurewei Technologies
Intended status: Informational                                 G. Mirsky
Expires: August 22, 2021                                       ZTE Corp.
                                                             C. Filsfils
                                                           A. Abdelsalam
                                                     Cisco Systems, Inc.
                                                                 T. Zhou
                                                                   Z. Li
                                                                  Huawei
                                                                 J. Shin
                                                              SK Telecom
                                                                  K. Lee
                                                                   LG U+
                                                       February 18, 2021

    Postcard-based On-Path Flow Data Telemetry using Packet Marking
              draft-song-ippm-postcard-based-telemetry-09

Abstract

   The document describes a packet-marking variation of the Postcard-
   Based Telemetry (PBT), referred to as PBT-M.  Unlike the instruction-
   based PBT, as embodied in IOAM DEX, PBT-M does not require the
   encapsulation of a telemetry instruction header, so it avoids some of
   the implementation challenges of the instruction-based PBT.  However,
   PBT-M has unique issues that need to be considered.  This document
   serves as a scheme overview and provides design guidelines applicable
   to implementations in different network protocols.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 22, 2021.

Song, et al.             Expires August 22, 2021                [Page 1]
Internet-Draft          PBT using Packet Marking           February 2021

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   document authors.  All rights reserved.

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   described in the Simplified BSD License.

Table of Contents

   1.  Motivation  . . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  PBT-M: Marking-based PBT  . . . . . . . . . . . . . . . . . .   4
   3.  New Challenges  . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  PBT-M Design Considerations . . . . . . . . . . . . . . . . .   7
     4.1.  Packet Marking  . . . . . . . . . . . . . . . . . . . . .   7
     4.2.  Flow Path Discovery . . . . . . . . . . . . . . . . . . .   8
     4.3.  Packet Identity for Export Data Correlation . . . . . . .   8
     4.4.  Control the Load  . . . . . . . . . . . . . . . . . . . .   9
   5.  Implementation Recommendation . . . . . . . . . . . . . . . .   9
     5.1.  Configuration . . . . . . . . . . . . . . . . . . . . . .   9
     5.2.  Postcard Format . . . . . . . . . . . . . . . . . . . . .   9
     5.3.  Data Correlation  . . . . . . . . . . . . . . . . . . . .  10
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   8.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  10
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  10
   10. Informative References  . . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Motivation

   To gain detailed data plane visibility to support effective network
   OAM, it is essential to be able to examine the trace of user packets
   along their forwarding paths.  Such on-path flow data reflect the
   state and status of each user packet's real-time experience and
   provide valuable information for network monitoring, measurement, and
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