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Exporting Type Information for IP Flow Information Export (IPFIX) Information Elements
RFC 5610

Network Working Group                                          E. Boschi
Request for Comments: 5610                                   B. Trammell
Category: Standards Track                                 Hitachi Europe
                                                                 L. Mark
                                                         Fraunhofer IFAM
                                                                T. Zseby
                                                        Fraunhofer FOKUS
                                                               July 2009

                    Exporting Type Information for
        IP Flow Information Export (IPFIX) Information Elements

Abstract

   This document describes an extension to the IP Flow Information
   Export (IPFIX) protocol, which is used to represent and transmit data
   from IP flow measurement devices for collection, storage, and
   analysis, to allow the encoding of IPFIX Information Model properties
   within an IPFIX Message stream.  This enables the export of extended
   type information for enterprise-specific Information Elements and the
   storage of such information within IPFIX Files, facilitating
   interoperability and reusability among a wide variety of applications
   and tools.

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (c) 2009 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 in effect on the date of
   publication of this document (http://trustee.ietf.org/license-info).
   Please review these documents carefully, as they describe your rights
   and restrictions with respect to this document.

Boschi, et al.              Standards Track                     [Page 1]
RFC 5610                 IPFIX Type Information                July 2009

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  IPFIX Documents Overview . . . . . . . . . . . . . . . . .  4
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Type Information Export  . . . . . . . . . . . . . . . . . . .  5
     3.1.  informationElementDataType . . . . . . . . . . . . . . . .  5
     3.2.  informationElementDescription  . . . . . . . . . . . . . .  6
     3.3.  informationElementName . . . . . . . . . . . . . . . . . .  7
     3.4.  informationElementRangeBegin . . . . . . . . . . . . . . .  7
     3.5.  informationElementRangeEnd . . . . . . . . . . . . . . . .  7
     3.6.  informationElementSemantics  . . . . . . . . . . . . . . .  8
     3.7.  informationElementUnits  . . . . . . . . . . . . . . . . .  9
     3.8.  privateEnterpriseNumber  . . . . . . . . . . . . . . . . .  9
     3.9.  Information Element Type Options Template  . . . . . . . . 10
     3.10. Data Type and Semantics Restrictions . . . . . . . . . . . 12
   4.  Security Considerations  . . . . . . . . . . . . . . . . . . . 13
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 14
   6.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 15
   7.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 15
     7.1.  Normative References . . . . . . . . . . . . . . . . . . . 15
     7.2.  Informative References . . . . . . . . . . . . . . . . . . 16
   Appendix A.  Examples  . . . . . . . . . . . . . . . . . . . . . . 17

Boschi, et al.              Standards Track                     [Page 2]
RFC 5610                 IPFIX Type Information                July 2009

1.  Introduction

   IP Flow Information Export (IPFIX) provides a template mechanism for
   the flexible description of Data Records, by defining a record as a
   collection of Information Elements defined in an IANA registry,
   However, these Templates provide limited information about the type
   of described data; indeed, they encode only the size of the fields
   defined by these Information Elements.  There presently exists no
   mechanism to provide full type information for these Information
   Elements, as is defined for the Information Elements in the IPFIX
   Information Model [RFC5102].

   This especially limits the interoperability of enterprise-specific
   Information Elements.  It is not possible to use analysis tools on
   IPFIX records containing these partially defined Information Elements

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