Network Telemetry Framework
draft-ietf-opsawg-ntf-07

Document Type Active Internet-Draft (opsawg WG)
Authors Haoyu Song  , Fengwei Qin  , Pedro Martinez-Julia  , Laurent Ciavaglia  , Aijun Wang 
Last updated 2021-02-19
Replaces draft-opsawg-ntf
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Document shepherd Alexander Clemm
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OPSAWG                                                           H. Song
Internet-Draft                                                 Futurewei
Intended status: Informational                                    F. Qin
Expires: August 23, 2021                                    China Mobile
                                                       P. Martinez-Julia
                                                                    NICT
                                                            L. Ciavaglia
                                                                   Nokia
                                                                 A. Wang
                                                           China Telecom
                                                       February 19, 2021

                      Network Telemetry Framework
                        draft-ietf-opsawg-ntf-07

Abstract

   Network telemetry is a technology for gaining network insight and
   facilitating efficient and automated network management.  It
   encompasses various techniques for remote data generation,
   collection, correlation, and consumption.  This document describes an
   architectural framework for network telemetry, motivated by
   challenges that are encountered as part of the operation of networks
   and by the requirements that ensue.  Network telemetry, as
   necessitated by best industry practices, covers technologies and
   protocols that extend beyond conventional network Operations,
   Administration, and Management (OAM).  The presented network
   telemetry framework promises flexibility, scalability, accuracy,
   coverage, and performance.  In addition, it facilitates the
   implementation of automated control loops to address both today's and
   tomorrow's network operational needs.  This document clarifies the
   terminologies and classifies the modules and components of a network
   telemetry system from several different perspectives.  The framework
   and taxonomy help to set a common ground for the collection of
   related work and provide guidance for related technique and standard
   developments.

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/.

Song, et al.             Expires August 23, 2021                [Page 1]
Internet-Draft         Network Telemetry Framework         February 2021

   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 23, 2021.

Copyright Notice

   Copyright (c) 2021 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
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Glossary  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Background  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  Telemetry Data Coverage . . . . . . . . . . . . . . . . .   7
     3.2.  Use Cases . . . . . . . . . . . . . . . . . . . . . . . .   7
     3.3.  Challenges  . . . . . . . . . . . . . . . . . . . . . . .   9
     3.4.  Network Telemetry . . . . . . . . . . . . . . . . . . . .  10
   4.  The Necessity of a Network Telemetry Framework  . . . . . . .  12
   5.  Network Telemetry Framework . . . . . . . . . . . . . . . . .  13
     5.1.  Top Level Modules . . . . . . . . . . . . . . . . . . . .  14
       5.1.1.  Management Plane Telemetry  . . . . . . . . . . . . .  17
       5.1.2.  Control Plane Telemetry . . . . . . . . . . . . . . .  17
       5.1.3.  Forwarding Plane Telemetry  . . . . . . . . . . . . .  18
       5.1.4.  External Data Telemetry . . . . . . . . . . . . . . .  20
     5.2.  Second Level Function Components  . . . . . . . . . . . .  21
     5.3.  Data Acquisition Mechanism and Type Abstraction . . . . .  22
     5.4.  Mapping Existing Mechanisms into the Framework  . . . . .  24
   6.  Evolution of Network Telemetry Applications . . . . . . . . .  25
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