Multi-Path Concurrent Measurement for IPPM
draft-dang-ippm-multiple-path-measurement-03

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 00
• 01
• 02
• 03

Network Working Group                                       D. Dang, Ed.
Internet-Draft                                                    Huawei
Intended status: Informational                                   W. Wang
Expires: November 14, 2020                                 China Telecom
                                                                  W. LEE
                                                                   LG U+
                                                            May 13, 2020

               Multi-Path Concurrent Measurement for IPPM
              draft-dang-ippm-multiple-path-measurement-03

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).

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 November 14, 2020.

Copyright Notice

   Copyright (c) 2020 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

Dang, et al.            Expires November 14, 2020               [Page 1]
Internet-Draft Multi-Path Concurrent Measurement for IPPM       May 2020

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Terminology & Abbreviations . . . . . . . . . . . . . . .   3
   2.  Overview of MPCM  . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Principle . . . . . . . . . . . . . . . . . . . . . . . .   4
       2.1.1.  Single Path Measurement . . . . . . . . . . . . . . .   4
       2.1.2.  Multiple Path Measurement . . . . . . . . . . . . . .   6
   3.  MPCM-Test Packet Format and Content . . . . . . . . . . . . .   7
   4.  Expansion based on various measurement methods  . . . . . . .  10
     4.1.  IOAM  . . . . . . . . . . . . . . . . . . . . . . . . . .  10
   5.  Data Export . . . . . . . . . . . . . . . . . . . . . . . . .  10
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   9.  Normative References  . . . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

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