A One-Path Congestion Metric for IPPM
draft-dang-ippm-congestion-01

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Network Working Group                                       D. Dang, Ed.
Internet-Draft                                                    Huawei
Intended status: Informational                                   W. Wang
Expires: September 12, 2019                                China Telecom
                                                          March 11, 2019

                 A One-Path Congestion Metric for IPPM
                     draft-dang-ippm-congestion-01

Abstract

   This memo defines a metric for one path congestion across Internet
   paths.  The traditional mode evaluates network congestion based on
   the bandwidth utilization of the link.  However, there is a lack of
   E2E path congestion that is truly service oriented.  So A Path
   Congestion Metric is required.

Status of This Memo

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   This Internet-Draft will expire on September 12, 2019.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
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   the Trust Legal Provisions and are provided without warranty as
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Terminology & Abbreviations . . . . . . . . . . . . . . .   3
     1.3.  Motivation  . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  A singleton definition of a Type-P-Path-Congestion Metric . .   4
     2.1.  Metric Name . . . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  Metric Parameters . . . . . . . . . . . . . . . . . . . .   4
     2.3.  Metric unit . . . . . . . . . . . . . . . . . . . . . . .   5
     2.4.  Definition  . . . . . . . . . . . . . . . . . . . . . . .   5
     2.5.  Methodologies . . . . . . . . . . . . . . . . . . . . . .   5
     2.6.  Reporting the Metric  . . . . . . . . . . . . . . . . . .   7
   3.  A Definition for Samples of Path Congestion . . . . . . . . .   7
     3.1.  Metric Name . . . . . . . . . . . . . . . . . . . . . . .   7
     3.2.  Metric Parameters . . . . . . . . . . . . . . . . . . . .   7
     3.3.  Metric Units  . . . . . . . . . . . . . . . . . . . . . .   8
     3.4.  Definition  . . . . . . . . . . . . . . . . . . . . . . .   8
     3.5.  Methodologies . . . . . . . . . . . . . . . . . . . . . .   8
     3.6.  Reporting the Metric  . . . . . . . . . . . . . . . . . .   9
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   7.  Normative References  . . . . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   This memo defines a metric for a path congestion across Internet
   paths.

   Currently there is no path congestion metric specified according to
   [RFC2330] framework, so the notions and conventions of Path
   Congestion will be introduced to extend RFC 2330.

   o  A 'singleton*' analytic metric, called Type-P-Path-Congestion,
      will be introduced to measure a single observation of A Path
      Congestion.

   o  Using this singleton metric, a 'sample*' called Type-P-One-Path-
      Congestion-Poisson-Stream is introduced to measure a sequence of
      singleton congestions sent at times taken from a Poisson process,
      defined in Section 11.1.1 of [RFC2330].

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1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",