A One-Way Delay Metric for IPPM
draft-ietf-ippm-2679-bis-02

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Document Type Active Internet-Draft (ippm WG)
Last updated 2015-07-13 (latest revision 2015-06-22)
Replaces draft-morton-ippm-2679-bis
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Network Working Group                                           G. Almes
Internet-Draft                                                 Texas A&M
Obsoletes: 2679 (if approved)                               S. Kalidindi
Intended status: Standards Track                                    Ixia
Expires: December 22, 2015                                  M. Zekauskas
                                                               Internet2
                                                          A. Morton, Ed.
                                                               AT&T Labs
                                                           June 20, 2015

                    A One-Way Delay Metric for IPPM
                      draft-ietf-ippm-2679-bis-02

Abstract

   This memo (RFC 2679 bis) defines a metric for one-way delay of
   packets across Internet paths.  It builds on notions introduced and
   discussed in the IPPM Framework document, RFC 2330; the reader is
   assumed to be familiar with that document.  This memo makes RFC 2679
   obsolete.

Status of This Memo

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   This Internet-Draft will expire on December 22, 2015.

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   Copyright (c) 2015 IETF Trust and the persons identified as the
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   This document is subject to BCP 78 and the IETF Trust's Legal
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   publication of this document.  Please review these documents

Almes, et al.           Expires December 22, 2015               [Page 1]
Internet-Draft       A One-Way Delay Metric for IPPM           June 2015

   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  RFC 2679 bis  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  Motivation  . . . . . . . . . . . . . . . . . . . . . . .   6
     2.2.  General Issues Regarding Time . . . . . . . . . . . . . .   7
   3.  A Singleton Definition for One-way Delay  . . . . . . . . . .   8
     3.1.  Metric Name:  . . . . . . . . . . . . . . . . . . . . . .   8
     3.2.  Metric Parameters:  . . . . . . . . . . . . . . . . . . .   8
     3.3.  Metric Units: . . . . . . . . . . . . . . . . . . . . . .   8
     3.4.  Definition: . . . . . . . . . . . . . . . . . . . . . . .   8
     3.5.  Discussion: . . . . . . . . . . . . . . . . . . . . . . .   9
     3.6.  Methodologies:  . . . . . . . . . . . . . . . . . . . . .  10
     3.7.  Errors and Uncertainties: . . . . . . . . . . . . . . . .  11
       3.7.1.  Errors or uncertainties related to Clocks . . . . . .  11
       3.7.2.  Errors or uncertainties related to Wire-time vs Host-
               time  . . . . . . . . . . . . . . . . . . . . . . . .  12
       3.7.3.  Calibration . . . . . . . . . . . . . . . . . . . . .  13
     3.8.  Reporting the metric: . . . . . . . . . . . . . . . . . .  15
       3.8.1.  Type-P  . . . . . . . . . . . . . . . . . . . . . . .  15
       3.8.2.  Loss Threshold  . . . . . . . . . . . . . . . . . . .  16
       3.8.3.  Calibration Results . . . . . . . . . . . . . . . . .  16
       3.8.4.  Path  . . . . . . . . . . . . . . . . . . . . . . . .  16
   4.  A Definition for Samples of One-way Delay . . . . . . . . . .  16
     4.1.  Metric Name:  . . . . . . . . . . . . . . . . . . . . . .  17
     4.2.  Metric Parameters:  . . . . . . . . . . . . . . . . . . .  17
     4.3.  Metric Units: . . . . . . . . . . . . . . . . . . . . . .  17
     4.4.  Definition: . . . . . . . . . . . . . . . . . . . . . . .  17
     4.5.  Discussion: . . . . . . . . . . . . . . . . . . . . . . .  18
     4.6.  Methodologies:  . . . . . . . . . . . . . . . . . . . . .  18
     4.7.  Errors and Uncertainties: . . . . . . . . . . . . . . . .  19
     4.8.  Reporting the metric: . . . . . . . . . . . . . . . . . .  19
   5.  Some Statistics Definitions for One-way Delay . . . . . . . .  19
     5.1.  Type-P-One-way-Delay-Percentile . . . . . . . . . . . . .  19
     5.2.  Type-P-One-way-Delay-Median . . . . . . . . . . . . . . .  20
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