Network Service Header (NSH) Encapsulation for In-situ OAM (IOAM) Data
draft-ietf-sfc-ioam-nsh-01

Document Type Active Internet-Draft (sfc WG)
Last updated 2019-03-11
Replaces draft-brockners-sfc-ioam-nsh
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SFC                                                         F. Brockners
Internet-Draft                                               S. Bhandari
Intended status: Standards Track                             V. Govindan
Expires: September 12, 2019                                 C. Pignataro
                                                                   Cisco
                                                              H. Gredler
                                                            RtBrick Inc.
                                                                J. Leddy
                                                                 Comcast
                                                               S. Youell
                                                                    JPMC
                                                              T. Mizrahi
                                        Huawei Network.IO Innovation Lab
                                                                D. Mozes

                                                             P. Lapukhov
                                                                Facebook
                                                                R. Chang
                                                       Barefoot Networks
                                                          March 11, 2019

 Network Service Header (NSH) Encapsulation for In-situ OAM (IOAM) Data
                       draft-ietf-sfc-ioam-nsh-01

Abstract

   In-situ Operations, Administration, and Maintenance (IOAM) records
   operational and telemetry information in the packet while the packet
   traverses a path between two points in the network.  This document
   outlines how IOAM data fields are encapsulated in the Network Service
   Header (NSH).

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
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Brockners, et al.      Expires September 12, 2019               [Page 1]
Internet-Draft      NSH encapsulation for In-situ OAM         March 2019

   This Internet-Draft will expire on September 12, 2019.

Copyright Notice

   Copyright (c) 2019 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
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  IOAM data fields encapsulation in NSH . . . . . . . . . . . .   3
   4.  Considerations  . . . . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Discussion of the encapsulation approach  . . . . . . . .   5
     4.2.  IOAM and the use of the NSH O-bit . . . . . . . . . . . .   6
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   7
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   7
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   In-situ OAM (IOAM), as defined in [I-D.ietf-ippm-ioam-data], records
   OAM information within the packet while the packet traverses a
   particular network domain.  The term "in-situ" refers to the fact
   that the OAM data is added to the data packets rather than is being
   sent within packets specifically dedicated to OAM.  This document
   defines how IOAM data fields are transported as part of the Network
   Service Header (NSH) [RFC8300] encapsulation for the Service Function
   Chaining (SFC) [RFC7665].  The IOAM data fields are defined in
   [I-D.ietf-ippm-ioam-data].  An implementation of IOAM which leverages
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