In-situ Flow Information Telemetry Framework
draft-song-opsawg-ifit-framework-01

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OPSAWG                                                      H. Song, Ed.
Internet-Draft                                                    ZB. Li
Intended status: Informational                                   T. Zhou
Expires: September 6, 2019                                        Huawei
                                                                  ZQ. Li
                                                            China Mobile
                                                                 J. Shin
                                                              SK Telecom
                                                           March 5, 2019

              In-situ Flow Information Telemetry Framework
                  draft-song-opsawg-ifit-framework-01

Abstract

   In-situ Flow Information Telemetry (iFIT) is a framework for applying
   data plane telemetry techniques such as In-situ OAM (iOAM) and
   Postcard-Based Telemetry (PBT).  It enumerates several key components
   and describes how these components are assembled to achieve a
   complete working solution for user traffic telemetry in carrier
   networks.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119][RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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
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   This Internet-Draft will expire on September 6, 2019.

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Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Smart Flow and Data Selection . . . . . . . . . . . . . . . .   4
   3.  Export Data Reduction . . . . . . . . . . . . . . . . . . . .   5
   4.  Dynamic Network Probe . . . . . . . . . . . . . . . . . . . .   5
   5.  Encapsulation and Tunnel Modes  . . . . . . . . . . . . . . .   6
   6.  On-demand Technique Selection and Integration . . . . . . . .   6
   7.  Summary and Future Work . . . . . . . . . . . . . . . . . . .   7
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   10. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .   7
   11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   7
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     12.1.  Normative References . . . . . . . . . . . . . . . . . .   7
     12.2.  Informative References . . . . . . . . . . . . . . . . .   8
     12.3.  URIs . . . . . . . . . . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   Application-aware network operation is important for user SLA
   compliance, service path enforcement, fault diagnosis, and network
   resource optimization.  In-situ OAM (IOAM)
   [I-D.brockners-inband-oam-data] and PBT
   [I-D.song-ippm-postcard-based-telemetry] can provide the direct
   experience of user traffic.  These techniques are invaluable for
   application-aware network operations in not only data center and
   enterprise networks but also carrier networks.

   However, successfully applying such techniques in carrier networks
   poses several practical challenges:

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   o  C1: IOAM and PBT incur extra packet processing which may strain
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