A Multi-Path Concurrent Measurement Protocol for IPPM
draft-dang-ippm-multiple-path-measurement-01

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Last updated 2019-03-10
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Network Working Group                                       D. Dang, Ed.
Internet-Draft                                                    Huawei
Intended status: Informational                                   W. Wang
Expires: September 11, 2019                                China Telecom
                                                          March 10, 2019

         A Multi-Path Concurrent Measurement Protocol for IPPM
              draft-dang-ippm-multiple-path-measurement-01

Abstract

   This test method can test multi-paths concurrently between two edge
   nodes.  This document details Multi-Path Concurrent Measurement
   Protocol (MPCMP).

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   This Internet-Draft will expire on September 11, 2019.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
     1.2.  Terminology & Abbreviations . . . . . . . . . . . . . . .   2
   2.  Overview of Multi-Path Concurrent Measurement Protocol  . . .   3
   3.  MPCMP-Test Packet Format and Content  . . . . . . . . . . . .   3
   4.  Expansion based on various measurement methods  . . . . . . .   6
     4.1.  IOAM  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Data Export . . . . . . . . . . . . . . . . . . . . . . . . .   6
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   9.  Normative References  . . . . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   In load-balancing scenario, there are multiple paths adopted between
   two edge nodes.  The traffic from the Scr node to the Dst node is
   required to be steered into to the specific path/paths basing on the
   SLA information of each path.  In the traditional method, the paths
   are measured separately.  If you want to ensure that the data
   obtained by the test is available and accurate, then the test start
   and end points of this set of Paths must be consistent.

   The Multi-Path Concurrent Measurement Protocol (MPCMP) is required,
   which can be used bi-directionally to concurrently measure multi-
   paths metrics between two network elements.  At the same time, this
   method also saves the number of test messages and reduces the load on
   the network.

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119.

1.2.  Terminology & Abbreviations

   o  Mutiple Paths

      *  There are multiple paths between two nodes in the network.
         These paths may be equal-cost multi-path (ECMP) mode or
         unequal-cost multiple (UCMP) mode.  In a real network, they
         might be one [draft-ietf-spring-segment-routing-policy] or
         [RFC7348] tunnel.

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   o  Concurrent

      *  In order to ensure comparability between multiple paths, the
         test start point and the test end point are required to be
         synchronized.

2.  Overview of Multi-Path Concurrent Measurement Protocol

   The Multi-Path Concurrent Measurement Protocol (MPCMP) is an open
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