Flow Selection Techniques
RFC 7014

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Internet Engineering Task Force (IETF)                      S. D'Antonio
Request for Comments: 7014                  Univ. of Napoli "Parthenope"
Category: Standards Track                                       T. Zseby
ISSN: 2070-1721                                          CAIDA/FhG FOKUS
                                                                C. Henke
                                         Tektronix Communications Berlin
                                                               L. Peluso
                                                    University of Napoli
                                                          September 2013

                       Flow Selection Techniques

Abstract

   The Intermediate Flow Selection Process is the process of selecting a
   subset of Flows from all observed Flows.  The Intermediate Flow
   Selection Process may be located at an IP Flow Information Export
   (IPFIX) Exporter or Collector, or within an IPFIX Mediator.  It
   reduces the effort of post-processing Flow data and transferring Flow
   Records.  This document describes motivations for using the
   Intermediate Flow Selection process and presents Intermediate Flow
   Selection techniques.  It provides an information model for
   configuring Intermediate Flow Selection Process techniques and
   discusses what information about an Intermediate Flow Selection
   Process should be exported.

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on
   Internet Standards is available in 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/rfc7014.

D'Antonio, et al.            Standards Track                    [Page 1]
RFC 7014                Flow Selection Techniques         September 2013

Copyright Notice

   Copyright (c) 2013 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
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   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
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   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
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   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

D'Antonio, et al.            Standards Track                    [Page 2]
RFC 7014                Flow Selection Techniques         September 2013

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Requirements Language  . . . . . . . . . . . . . . . . . .  4
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Difference between Intermediate Flow Selection Process and
       Packet Selection . . . . . . . . . . . . . . . . . . . . . . .  7
   4.  Difference between Intermediate Flow Selection Process and
       Intermediate Selection Process . . . . . . . . . . . . . . . .  9
   5.  Intermediate Flow Selection Process within the IPFIX
       Architecture . . . . . . . . . . . . . . . . . . . . . . . . .  9
     5.1.  Intermediate Flow Selection Process in the Metering
           Process  . . . . . . . . . . . . . . . . . . . . . . . . . 11
     5.2.  Intermediate Flow Selection Process in the Exporting
           Process  . . . . . . . . . . . . . . . . . . . . . . . . . 11
     5.3.  Intermediate Flow Selection Process as a Function of
           the IPFIX Mediator . . . . . . . . . . . . . . . . . . . . 11
   6.  Intermediate Flow Selection Process Techniques . . . . . . . . 12
     6.1.  Flow Filtering . . . . . . . . . . . . . . . . . . . . . . 12
       6.1.1.  Property Match Filtering . . . . . . . . . . . . . . . 12