Operation of the IP Flow Information Export (IPFIX) Protocol on IPFIX Mediators
RFC 7119

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Internet Engineering Task Force (IETF)                         B. Claise
Request for Comments: 7119                           Cisco Systems, Inc.
Category: Standards Track                                   A. Kobayashi
ISSN: 2070-1721                                                      NTT
                                                             B. Trammell
                                                              ETH Zurich
                                                           February 2014

      Operation of the IP Flow Information Export (IPFIX) Protocol
                           on IPFIX Mediators

Abstract

   This document specifies the operation of the IP Flow Information
   Export (IPFIX) protocol specific to IPFIX Mediators, including
   Template and Observation Point management, timing considerations, and
   other Mediator-specific concerns.

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/rfc7119.

Copyright Notice

   Copyright (c) 2014 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.

Claise, et al.               Standards Track                    [Page 1]
RFC 7119                     IPFIX MED-PROTO               February 2014

Table of Contents

   1. Introduction ....................................................2
      1.1. IPFIX Documents Overview ...................................3
      1.2. IPFIX Mediator Documents Overview ..........................4
      1.3. Relationship with the IPFIX and PSAMP Protocols ............5
   2. Terminology .....................................................5
   3. Handling IPFIX Message Headers ..................................8
   4. Template Management ............................................10
      4.1. Passing Unmodified Templates through an IPFIX Mediator ....11
           4.1.1. Template Mapping and Information Element Ordering ..15
      4.2. Creating New Templates at an IPFIX Mediator ...............17
      4.3. Handling Unknown Information Elements .....................17
   5. Preserving Original Observation Point Information ..............17
      5.1. originalExporterIPv4Address Information Element ...........20
      5.2. originalExporterIPv6Address Information Element ...........20
   6. Managing Observation Domain IDs ................................20
      6.1. originalObservationDomainId Information Element ...........21
   7. Timing Considerations ..........................................21
   8. Transport Considerations .......................................23
   9. Collecting Process Considerations ..............................23
   10. Specific Reporting Requirements ...............................23
      10.1. Intermediate Process Reliability Statistics
            Options Template .........................................24
      10.2. Flow Key Options Template ................................26
      10.3. intermediateProcessId Information Element ................26
      10.4. ignoredDataRecordTotalCount Information Element ..........27
   11. Operations and Management Considerations ......................27
   12. Security Considerations .......................................28
   13. IANA Considerations ...........................................28
   14. Acknowledgments ...............................................29
   15. References ....................................................29
      15.1. Normative References .....................................29
      15.2. Informative References ...................................30

1.  Introduction

   The IPFIX architectural components in [RFC5470] consist of IPFIX
   Devices and IPFIX Collectors communicating using the IPFIX protocol
   [RFC7011], which specifies how to export IP Flow information.  This
   protocol is designed to export information about IP traffic Flows and
   related measurement data, where a Flow is defined by a set of key