IPFIX export of Segment Routing IPv6 information
draft-patki-srv6-ipfix-00

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SPRING                                                          D. Patki
Internet-Draft                                       Cisco Systems, Inc.
Intended status: Standards Track                           June 24, 2020
Expires: December 26, 2020

            IPFIX export of Segment Routing IPv6 information
                       draft-patki-srv6-ipfix-00

Abstract

   This document introduces new IP Flow Information Exchange (IPFIX)
   information elemements for exporting IPv6 Segment Routing Header
   (SRH).

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   This Internet-Draft will expire on December 26, 2020.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
   2.  New IPFIX Information Elements  . . . . . . . . . . . . . . .   3
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   4
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   4
     6.2.  Informative References  . . . . . . . . . . . . . . . . .   4
   Appendix A.  Encoding Example . . . . . . . . . . . . . . . . . .   5
     A.1.  Template Record . . . . . . . . . . . . . . . . . . . . .   5
     A.2.  Data Set  . . . . . . . . . . . . . . . . . . . . . . . .   6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   IP Flow Information Export (IPFIX) [RFC7011] provides network
   administrators with traffic flow information using the Information
   Elements (IEs) defined in the "IPFIX Information Elements" registry
   [IANA-IPFIX].  Based on the traffic flow information, network
   administrators know the amount and direction of the traffic in their
   network and can then optimize the network when needed.  For example,
   the collected information could be used for traffic monitoring and,
   optionally, for traffic optimization according to the operator's
   policy.

   A new type of Routing Extension Header called Segment Routing Header
   (SRH) is defined by [RFC8754] which is used for applying Segment
   Routing on IPv6 data plane.  This document defined new IPFIX IEs to
   export the contents of SRH.

   Currently this document is limited to exporting based SRH excluding
   the TLV, however, further versions of this document intend to include
   TLVs and variations in the SRH that may be defined in the near
   future.

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

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2.  New IPFIX Information Elements

   This section defines new IPFIX IEs corresponding to various fields in
   the SRH.

   ipv6SRHLastEntry
      The index (zero based) in the Segment List in the SRH, of the last
      element of the Segment List.

   ipv6SRHFlags
      8-bit flags defined in the SRH.

   ipv6SRHTag
      Tag is an identifier that marks a packet as part of a class or
      group of packets, e.g., packets sharing the same set of
      properties.  This information element contains the value of the
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