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IP Flow Information Export (IPFIX) Mediation: Framework
RFC 6183

Internet Engineering Task Force (IETF)                      A. Kobayashi
Request for Comments: 6183                                           NTT
Updates: 5470                                                  B. Claise
Category: Informational                              Cisco Systems, Inc.
ISSN: 2070-1721                                                 G. Muenz
                                                             TU Muenchen
                                                            K. Ishibashi
                                                                     NTT
                                                              April 2011

        IP Flow Information Export (IPFIX) Mediation: Framework

Abstract

   This document describes a framework for IP Flow Information Export
   (IPFIX) Mediation.  This framework extends the IPFIX reference model
   specified in RFC 5470 by defining the IPFIX Mediator components.

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/rfc6183.

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

Kobayashi, et al.             Informational                     [Page 1]
RFC 6183               IPFIX Mediation: Framework             April 2011

   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 ....................................................3
   2. Terminology and Definitions .....................................3
   3. IPFIX/PSAMP Documents Overview ..................................6
      3.1. IPFIX Documents Overview ...................................6
      3.2. PSAMP Documents Overview ...................................6
   4. IPFIX Mediation Reference Model .................................7
   5. IPFIX Mediation Functional Blocks ..............................12
      5.1. Collecting Process ........................................12
      5.2. Exporting Process .........................................13
      5.3. Intermediate Process ......................................13
           5.3.1. Data Record Expiration .............................14
           5.3.2. Specific Intermediate Processes ....................14
   6. Component Combination ..........................................20
      6.1. Data-Based Collector Selection ............................20
      6.2. Flow Selection and Aggregation ............................21
      6.3. IPFIX File Writer/Reader ..................................22
   7. Encoding for IPFIX Message Header ..............................22
   8. Information Model ..............................................24
   9. Security Considerations ........................................24
      9.1. Avoiding Security Level Downgrade .........................25
      9.2. Avoiding Security Level Upgrade ...........................25
      9.3. Approximating End-to-End Assertions for IPFIX Mediators ...26
      9.4. Multiple Tenancy ..........................................26
   10. References ....................................................27
      10.1. Normative References .....................................27
      10.2. Informative References ...................................27
   11. Acknowledgements ..............................................29

Kobayashi, et al.             Informational                     [Page 2]
RFC 6183               IPFIX Mediation: Framework             April 2011

1.  Introduction

   The IP Flow Information Export (IPFIX) architectural components in
   [RFC5470] consist of IPFIX Devices and IPFIX Collectors communicating

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