Round-trip Loss Metrics
draft-ietf-ippm-rt-loss-02

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Document Type Active Internet-Draft (ippm WG)
Last updated 2012-02-29 (latest revision 2012-01-06)
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IESG IESG state AD Evaluation::Revised I-D Needed
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Responsible AD Wesley Eddy
IESG note Document sheperd is Henk Uijterwaal (henk@uijterwaal.nl).
Send notices to ippm-chairs@tools.ietf.org, draft-ietf-ippm-rt-loss@tools.ietf.org
Network Working Group                                          A. Morton
Internet-Draft                                                 AT&T Labs
Intended status: Standards Track                         January 6, 2012
Expires: July 9, 2012

                        Round-trip Loss Metrics
                       draft-ietf-ippm-rt-loss-02

Abstract

   Many user applications (and the transport protocols that make them
   possible) require two-way communications.  To assess this capability,
   and to achieve test system simplicity, round-trip loss measurements
   are frequently conducted in practice.  The Two-Way Active Measurement
   Protocol specified in RFC 5357 establishes a round-trip loss
   measurement capability for the Internet.  However, there is currently
   no metric specified according to the RFC 2330 framework.

   This memo adds round-trip loss to the set of IP Performance Metrics
   (IPPM).

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.

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   This Internet-Draft will expire on July 9, 2012.

Copyright Notice

Morton                    Expires July 9, 2012                  [Page 1]
Internet-Draft               Round-trip Loss                January 2012

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Motivation . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Scope  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Common Specifications for Round-trip Metrics . . . . . . . . .  4
     3.1.  Name: Type-P-* . . . . . . . . . . . . . . . . . . . . . .  4
     3.2.  Metric Parameters  . . . . . . . . . . . . . . . . . . . .  4
     3.3.  Metric Definition  . . . . . . . . . . . . . . . . . . . .  5
     3.4.  Metric Units . . . . . . . . . . . . . . . . . . . . . . .  5
   4.  A Singleton Round-trip Loss Metric . . . . . . . . . . . . . .  5
     4.1.  Name: Type-P-Round-trip-Loss . . . . . . . . . . . . . . .  5
     4.2.  Metric Parameters  . . . . . . . . . . . . . . . . . . . .  6
     4.3.  Definition and Metric Units  . . . . . . . . . . . . . . .  6
     4.4.  Discussion and other details . . . . . . . . . . . . . . .  7
   5.  A Sample Round-trip Loss Metric  . . . . . . . . . . . . . . .  7
     5.1.  Name: Type-P-Round-trip-Loss-<Sample>-Stream . . . . . . .  7
     5.2.  Metric Parameters  . . . . . . . . . . . . . . . . . . . .  7
     5.3.  Definition and Metric Units  . . . . . . . . . . . . . . .  7
     5.4.  Discussion and other details . . . . . . . . . . . . . . .  8
   6.  Round-trip Loss Statistic  . . . . . . . . . . . . . . . . . .  9
     6.1.  Type-P-Round-trip-Loss-<Sample>-Ratio  . . . . . . . . . .  9
   7.  Round-trip Testing and One-way Reporting . . . . . . . . . . .  9
   8.  Measurement Considerations and Calibration . . . . . . . . . . 10
   9.  Security Considerations  . . . . . . . . . . . . . . . . . . . 10
     9.1.  Denial of Service Attacks  . . . . . . . . . . . . . . . . 10
     9.2.  User Data Confidentiality  . . . . . . . . . . . . . . . . 10
     9.3.  Interference with the metrics  . . . . . . . . . . . . . . 11
   10. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 11
   11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 11
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