A One-Way Delay Metric for IPPM
draft-morton-ippm-2679-bis-00

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Last updated 2012-10-15
Replaced by draft-ietf-ippm-2679-bis, rfc7679
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Network Working Group                                           G. Almes
Internet-Draft                                              S. Kalidindi
Intended status: Informational                              M. Zekauskas
Expires: April 18, 2013
                                                          A. Morton, Ed.
                                                               AT&T Labs
                                                        October 15, 2012

                    A One-Way Delay Metric for IPPM
                     draft-morton-ippm-2679-bis-00

Abstract

   This memo 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.

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 [RFC2119].

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
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   This Internet-Draft will expire on April 18, 2013.

Copyright Notice

   Copyright (c) 2012 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

Almes, et al.            Expires April 18, 2013                 [Page 1]
Internet-Draft       A One-Way Delay Metric for IPPM        October 2012

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Almes, et al.            Expires April 18, 2013                 [Page 2]
Internet-Draft       A One-Way Delay Metric for IPPM        October 2012

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 4
     1.1.  Motivation  . . . . . . . . . . . . . . . . . . . . . . . . 4
     1.2.  General Issues Regarding Time . . . . . . . . . . . . . . . 4
   2.  A Singleton Definition for One-way Delay  . . . . . . . . . . . 4
     2.1.  Metric Name:  . . . . . . . . . . . . . . . . . . . . . . . 4
     2.2.  Metric Parameters:  . . . . . . . . . . . . . . . . . . . . 4
     2.3.  Metric Units: . . . . . . . . . . . . . . . . . . . . . . . 5
     2.4.  Definition: . . . . . . . . . . . . . . . . . . . . . . . . 5
     2.5.  Discussion: . . . . . . . . . . . . . . . . . . . . . . . . 5
     2.6.  Methodologies:  . . . . . . . . . . . . . . . . . . . . . . 5
     2.7.  Errors and Uncertainties: . . . . . . . . . . . . . . . . . 5
       2.7.1.  Errors or uncertainties related to Clocks . . . . . . . 5
       2.7.2.  Errors or uncertainties related to Wire-time vs
               Host-time . . . . . . . . . . . . . . . . . . . . . . . 5
       2.7.3.  Calibration . . . . . . . . . . . . . . . . . . . . . . 5
     2.8.  Reporting the metric: . . . . . . . . . . . . . . . . . . . 5
       2.8.1.  Type-P  . . . . . . . . . . . . . . . . . . . . . . . . 5
       2.8.2.  Loss Threshold  . . . . . . . . . . . . . . . . . . . . 5
       2.8.3.  Calibration Results . . . . . . . . . . . . . . . . . . 5
       2.8.4.  Path  . . . . . . . . . . . . . . . . . . . . . . . . . 5
   3.  A Definition for Samples of One-way Delay . . . . . . . . . . . 5
     3.1.  Metric Name:  . . . . . . . . . . . . . . . . . . . . . . . 5
     3.2.  Metric Parameters:  . . . . . . . . . . . . . . . . . . . . 5
     3.3.  Metric Units: . . . . . . . . . . . . . . . . . . . . . . . 5
     3.4.  Definition: . . . . . . . . . . . . . . . . . . . . . . . . 5
     3.5.  Discussion: . . . . . . . . . . . . . . . . . . . . . . . . 5
     3.6.  Methodologies:  . . . . . . . . . . . . . . . . . . . . . . 5
     3.7.  Errors and Uncertainties: . . . . . . . . . . . . . . . . . 5
     3.8.  Reporting the metric: . . . . . . . . . . . . . . . . . . . 5
   4.  Some Statistics Definitions for One-way Delay . . . . . . . . . 6
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