RFC 3393 (rfc3393) - Page 1 of 21


IP Packet Delay Variation Metric for IP Performance Metrics (IPPM)



Alternative Format: Original Text Document



Network Working Group                                      C. Demichelis
Request for Comments: 3393                             Telecomitalia Lab
Category: Standards Track                                    P. Chimento
                                                            Ericsson IPI
                                                           November 2002


                    IP Packet Delay Variation Metric
                   for IP Performance Metrics (IPPM)

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

   This document refers to a metric for variation in delay of packets
   across Internet paths.  The metric is based on the difference in the
   One-Way-Delay of selected packets.  This difference in delay is
   called "IP Packet Delay Variation (ipdv)".

   The metric is valid for measurements between two hosts both in the
   case that they have synchronized clocks and in the case that they are
   not synchronized.  We discuss both in this document.

Table of Contents

   1 Introduction..................................................... 2
     1.1 Terminology.................................................. 3
     1.2 Definition................................................... 3
     1.3 Motivation................................................... 4
     1.4 General Issues Regarding Time................................ 5
   2 A singleton definition of a One-way-ipdv metric.................. 5
     2.1 Metric name.................................................. 6
     2.2 Metric parameters............................................ 6
     2.3 Metric unit.................................................. 6
     2.4 Definition................................................... 6
     2.5 Discussion................................................... 7
     2.6 Methodologies................................................ 9
     2.7 Errors and Uncertainties.....................................10



Demichelis & Chimento       Standards Track