A Key Performance Indicators (KPI) Stamping for the Network Service Header (NSH)
draft-browne-sfc-nsh-kpi-stamp-06

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Network Working Group                                          R. Browne
Internet Draft                                               A. Chilikin
Intended status: Informational                                     Intel
Expires: May 2019                                             T. Mizrahi
                                        Huawei Network.IO Innovation Lab
                                                       November 26, 2018

                    A Key Performance Indicators (KPI)
               Stamping for the Network Service Header (NSH)
                     draft-browne-sfc-nsh-kpi-stamp-06

Abstract

   This document describes an experimenal method of carrying Key
   Performance Indicators (KPIs) using the Network Service Header (NSH).
   This method may be used, for example, to monitor latency and QoS
   marking to identify problems on some links or service functions.

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on May 26, 2019.

Copyright Notice

   Copyright (c) 2018 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

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   (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
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   described in the Simplified BSD License.

Table of Contents

   1. Introduction ................................................ 2
   2. Terminology ................................................. 3
      2.1. Requirement Language ................................... 3
      2.2. Definition of Terms .................................... 3
         2.2.1. Terms Defined in this Document .................... 4
      2.3. Abbreviations .......................................... 4
   3. NSH KPI Stamping: An Overview ............................... 6
      3.1. Prerequisites .......................................... 7
      3.2. Operation ............................................. 10
         3.2.1. Flow Selection ................................... 10
         3.2.2. SCP Interface .................................... 10
      3.3. Performance Considerations ............................ 11
   4. NSH KPI-stamping Encapsulation ............................. 12
      4.1. KPI-stamping Extended Encapsulation ................... 13
         4.1.1. NSH Timestamping Encapsulation (Extended Mode) ... 15
         4.1.2. NSH QoS-stamping Encapsulation (Extended Mode) ... 17
      4.2. KPI-stamping Encapsulation (Detection Mode) ........... 20
   5. Hybrid Models .............................................. 22
      5.1. Targeted VNF Stamp .................................... 23
   6. Fragmentation Considerations ............................... 23
   7. Security Considerations .................................... 24
   8. IANA Considerations ........................................ 25
   9. Contributors ............................................... 25
   10. Acknowledgments ........................................... 25
   11. References ................................................ 25
      11.1. Normative References ................................. 25
      11.2. Informative References ............................... 26

1. Introduction

   Network Service Header (NSH), as defined by [RFC8300], specifies a
   method for steering the traffic among an order set of Service
   Functions (SFs) using an extensible service header. This allows for
   flexibility and programmability in the forwarding plane to invoke the
   appropriate SFs for specific flows.

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