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RFC 4148 and the IP Performance Metrics (IPPM) Registry of Metrics Are Obsolete
RFC 6248

Document type: RFC - Informational (April 2011; No errata)
Obsoletes RFC 4148
Document stream: IETF
Last updated: 2013-03-02
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: RFC 6248 (Informational)
Responsible AD: Lars Eggert
Send notices to: acmorton@att.com, draft-morton-ippm-rfc4148-obsolete@tools.ietf.org

Internet Engineering Task Force (IETF)                         A. Morton
Request for Comments: 6248                                     AT&T Labs
Obsoletes: 4148                                               April 2011
Updates: 4737, 5560, 5644, 6049
Category: Informational
ISSN: 2070-1721

   RFC 4148 and the IP Performance Metrics (IPPM) Registry of Metrics
                              Are Obsolete

Abstract

   This memo reclassifies RFC 4148, "IP Performance Metrics (IPPM)
   Metrics Registry", as Obsolete, and withdraws the IANA IPPM Metrics
   Registry itself from use because it is obsolete.  The current
   registry structure has been found to be insufficiently detailed to
   uniquely identify IPPM metrics.  Despite apparent efforts to find
   current or even future users, no one responded to the call for
   interest in the RFC 4148 registry during the second half of 2010.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6248.

Morton                        Informational                     [Page 1]
RFC 6248                  RFC 4148 is Obsolete                April 2011

Copyright Notice

   Copyright (c) 2011 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
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................2
   2. Action to Reclassify RFC 4148 and the Corresponding IANA
      Registry as Obsolete ............................................3
   3. Security Considerations .........................................4
   4. IANA Considerations .............................................4
   5. Acknowledgements ................................................4
   6. References ......................................................5
      6.1. Normative References .......................................5
      6.2. Informative References .....................................5

1.  Introduction

   The IP Performance Metrics (IPPM) framework [RFC2330] describes
   several ways to record options and metric parameter settings, in
   order to account for sources of measurement variability.  For
   example, Section 13 of [RFC2330] describes the notion of "Type P" so
   that metrics can be specified in general, but the specifics (such as
   payload length in octets and protocol type) can replace P to
   disambiguate the results.

   When the IPPM Metrics Registry [RFC4148] was designed, the
   variability of the "Type P" notion, and the variability possible with
   the many metric parameters (see Section 4.2 of [RFC2679]), were not
   fully appreciated.  Further, some of the early metric definitions
   only indicate Poisson streams [RFC2330] (see the metrics in
   [RFC2679], [RFC2680], and [RFC3393]), but later work standardized the
   methods for Periodic Stream measurements [RFC3432], adding to the
   variability possible when characterizing a metric exactly.

Morton                        Informational                     [Page 2]
RFC 6248                  RFC 4148 is Obsolete                April 2011

   It is not believed to be feasible or even useful to register every
   possible combination of Type P, metric parameters, and Stream
   parameters using the current structure of the IPPM Metrics Registry.

   The IPPM Metrics Registry is believed to have very few users, if any.
   Evidence of this was provided by the fact that one registry entry was
   syntactically incorrect for months after [RFC5644] was published.
   The text ":=" was used for the metrics in that document instead of

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