IPFIX Information Element extension for SFC
draft-kumar-ipfix-sfc-extension-05

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Last updated 2017-03-13
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Network Work group                                              N. Kumar
Internet-Draft                                              C. Pignataro
Intended status: Standards Track                                P. Quinn
Expires: September 14, 2017                          Cisco Systems, Inc.
                                                          March 13, 2017

              IPFIX Information Element extension for SFC
                   draft-kumar-ipfix-sfc-extension-05

Abstract

   Service Function Chaining (SFC) is an architecture that enables any
   operator to apply selective set of services by steering the traffic
   through an ordered set of service functions without any topology
   dependency.

   This document defines the required Information Elements to represent
   the details about service flows over any Service Function Path.

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Kumar, et al.          Expires September 14, 2017               [Page 1]
Internet-Draft                                                March 2017

   include Simplified BSD License text as described in Section 4.e of
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements notation . . . . . . . . . . . . . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Network Service Header  . . . . . . . . . . . . . . . . . . .   3
   5.  Flow measurement in SFC environment . . . . . . . . . . . . .   4
     5.1.  Observation Point . . . . . . . . . . . . . . . . . . . .   5
     5.2.  Flow measurement  . . . . . . . . . . . . . . . . . . . .   5
   6.  Service Flow Information Elements . . . . . . . . . . . . . .   6
     6.1.  nshBaseVersion  . . . . . . . . . . . . . . . . . . . . .   6
     6.2.  nshBaseFlags  . . . . . . . . . . . . . . . . . . . . . .   6
     6.3.  nshBaseHeaderLength . . . . . . . . . . . . . . . . . . .   7
     6.4.  nshBaseMDType . . . . . . . . . . . . . . . . . . . . . .   7
     6.5.  nshBaseNextProtocol . . . . . . . . . . . . . . . . . . .   7
     6.6.  nshSphServicePathID . . . . . . . . . . . . . . . . . . .   8
     6.7.  nshSphServiceIndex  . . . . . . . . . . . . . . . . . . .   8
     6.8.  nshMetadataMch  . . . . . . . . . . . . . . . . . . . . .   9
     6.9.  nshMetadataVch  . . . . . . . . . . . . . . . . . . . . .   9
     6.10. nshIPv4NextSFF  . . . . . . . . . . . . . . . . . . . . .   9
     6.11. nshIPv6NextSFF  . . . . . . . . . . . . . . . . . . . . .  10
     6.12. nshEtherNextSFF . . . . . . . . . . . . . . . . . . . . .  10
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   9.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .  11
   10. Contributing Authors  . . . . . . . . . . . . . . . . . . . .  11
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     11.2.  Informative References . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   [RFC7665] introduces and explains SFC architecture that enables any
   operator to apply selective set of services by steering the traffic
   through an ordered set of service functions without any topology
   dependency.  Such ordered set of service functions to be applied to a
   packet is defined as service function chaining.  As defined in
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