Extended OAM to Carry In-situ OAM Capabilities
draft-xiao-ippm-ioam-conf-state-02

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IPPM Working Group                                                X. Min
Internet-Draft                                                 G. Mirsky
Intended status: Standards Track                                     ZTE
Expires: June 21, 2019                                             L. Bo
                                                           China Telecom
                                                       December 18, 2018

             Extended OAM to Carry In-situ OAM Capabilities
                   draft-xiao-ippm-ioam-conf-state-02

Abstract

   This document describes an extension for OAM packets including MPLS
   LSP Ping/Traceroute [RFC8029], ICMP Ping/Traceroute for SRv6
   [I-D.ali-spring-srv6-oam] and SFC Ping/Traceroute
   [I-D.ietf-sfc-multi-layer-oam], which can be used within an IOAM
   domain, allowing the IOAM encapsulating node to acquire IOAM
   capabilities of each IOAM transit node and/or IOAM decapsulating node
   easily and dynamically.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on June 21, 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
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   (https://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

Min, et al.               Expires June 21, 2019                 [Page 1]
Internet-Draft       Extended OAM to Carry IOAM Capa       December 2018

   to this document.  Code Components extracted from this document must
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Conventions Used in This Document . . . . . . . . . . . .   3
       1.1.1.  Terminology . . . . . . . . . . . . . . . . . . . . .   3
       1.1.2.  Requirements Language . . . . . . . . . . . . . . . .   3
   2.  IOAM Capabilities Formats . . . . . . . . . . . . . . . . . .   4
     2.1.  IOAM Capabilities TLV . . . . . . . . . . . . . . . . . .   4
       2.1.1.  IOAM Tracing Capabilities sub-TLV . . . . . . . . . .   5
       2.1.2.  IOAM Proof of Transit Capabilities sub-TLV  . . . . .   6
       2.1.3.  IOAM Edge-to-Edge Capabilities sub-TLV  . . . . . . .   7
       2.1.4.  IOAM End-of-Domain sub-TLV  . . . . . . . . . . . . .   9
   3.  Operational Guide . . . . . . . . . . . . . . . . . . . . . .   9
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   7.  Normative References  . . . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   The Data Fields for In-situ OAM (IOAM) [I-D.ietf-ippm-ioam-data]
   defines data fields for IOAM which records OAM information within the
   packet while the packet traverses a particular network domain, which
   is called an IOAM domain.  IOAM can be used to complement OAM
   mechanisms based on, e.g., ICMP or other types of probe packets, and
   IOAM mechanisms can be leveraged where mechanisms using, e.g., ICMP
   do not apply or do not offer the desired results.

   As specified in [I-D.ietf-ippm-ioam-data], within the IOAM-domain,
   the IOAM data may be updated by network nodes that the packet
   traverses.  The device which adds an IOAM data container to the
   packet to capture IOAM data is called the "IOAM encapsulating node",
   whereas the device which removes the IOAM data container is referred
   to as the "IOAM decapsulating node".  Nodes within the domain which
   are aware of IOAM data and read and/or write or process the IOAM data
   are called "IOAM transit nodes".  Both the IOAM encapsulating node
   and the decapsulating node are referred to as domain edge devices,
   which can be hosts or network devices.

   In order to add accurate IOAM data container to the packet, the IOAM
   encapsulating node needs to know IOAM capabilities at the IOAM