Multi-Path Concurrent Measurement for IPPM
draft-dang-ippm-multiple-path-measurement-02

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Network Working Group                                       D. Dang, Ed.
Internet-Draft                                                    Huawei
Intended status: Informational                                   W. Wang
Expires: May 7, 2020                                       China Telecom
                                                                  W. LEE
                                                                   LG U+
                                                        November 4, 2019

               Multi-Path Concurrent Measurement for IPPM
              draft-dang-ippm-multiple-path-measurement-02

Abstract

   This test method can test multi-paths concurrently from one edge node
   to another edge node.  This document details Multi-Path Concurrent
   Measurement (MPCM).

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   This Internet-Draft will expire on May 7, 2020.

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

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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
   2.  Overview of MPCM  . . . . . . . . . . . . . . . . . . . . . .   4
   3.  MPCM-Test Packet Format and Content . . . . . . . . . . . . .   4
   4.  Expansion based on various measurement methods  . . . . . . .   7
     4.1.  IOAM  . . . . . . . . . . . . . . . . . . . . . . . . . .   7
   5.  Data Export . . . . . . . . . . . . . . . . . . . . . . . . .   7
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   8
   9.  Normative References  . . . . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   As we know, the current network has been already being in load
   balancing mode, however it is partially congested.  In other words,
   from the same source node to the same destination node, some paths
   have been congested to cause a decline in service quality, but some
   paths carry less traffic and are lightly loaded.  To solve the
   problem of unbalanced network load[draft-liu-ican], the first is to
   have the ability to detect the quality of the load sharing paths.
   And then the traffic from the Scr node to the Dst node is required to
   be steered from the congested paths into the lightly loaded path/
   paths basing on the SLA's requirement.  So it's necessary to measure
   the multi-paths in load-balancing mode.

   In the traditional method, the paths are measured separately because
   they aren't maintained by the path group.  If the multiple load
   sharing paths are required to be selected based on the SLA
   information, the measured SLA information needs to be comparable.  If
   you want to ensure that the data obtained by the test is available
   and accurate, the multi-paths are required to maintain by the path
   group in order that the test start and end points must be same.

   For example, the low latency services require millisecond delays.  If
   the start time and the end time aren't same, the measured data may
   not be in one test cycle, and the accuracy of this data is relatively
   low and the data cannot be comparedFigure 1.

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