Operations, Administration, and Maintenance (OAM) in Segment Routing Networks with IPv6 Data plane (SRv6)
draft-ietf-6man-spring-srv6-oam-07

Document Type Active Internet-Draft (6man WG)
Authors Zafar Ali  , Clarence Filsfils  , Satoru Matsushima  , Daniel Voyer  , Mach Chen 
Last updated 2020-07-28 (latest revision 2020-07-26)
Replaces draft-ali-6man-spring-srv6-oam
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6man                                                              Z. Ali
Internet-Draft                                               C. Filsfils
Intended status: Standards Track                           Cisco Systems
Expires: January 27, 2021                                  S. Matsushima
                                                                Softbank
                                                                D. Voyer
                                                             Bell Canada
                                                                 M. Chen
                                                                  Huawei
                                                           July 26, 2020

  Operations, Administration, and Maintenance (OAM) in Segment Routing
                  Networks with IPv6 Data plane (SRv6)
                   draft-ietf-6man-spring-srv6-oam-07

Abstract

   This document describes how the existing IPv6 OAM mechanisms can be
   used in an SRv6 network.  The document also introduces enhancements
   for OAM mechanisms for SRv6 networks.

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
   Task Force (IETF).  Note that other groups may also distribute
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   This Internet-Draft will expire on January 27, 2021.

Copyright Notice

   Copyright (c) 2020 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
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Ali, et al.             Expires January 27, 2021                [Page 1]
Internet-Draft                  SRv6 OAM                       July 2020

   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Abbreviations . . . . . . . . . . . . . . . . . . . . . .   3
     1.3.  Terminology and Reference Topology  . . . . . . . . . . .   3
   2.  OAM Mechanisms  . . . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  O-flag in Segment Routing Header  . . . . . . . . . . . .   5
       2.1.1.  O-flag Processing . . . . . . . . . . . . . . . . . .   5
     2.2.  OAM Operations  . . . . . . . . . . . . . . . . . . . . .   7
   3.  Illustrations . . . . . . . . . . . . . . . . . . . . . . . .   7
     3.1.  Ping in SRv6 Networks . . . . . . . . . . . . . . . . . .   8
       3.1.1.  Classic Ping  . . . . . . . . . . . . . . . . . . . .   8
       3.1.2.  Pinging a SID . . . . . . . . . . . . . . . . . . . .   9
     3.2.  Traceroute  . . . . . . . . . . . . . . . . . . . . . . .  10
       3.2.1.  Classic Traceroute  . . . . . . . . . . . . . . . . .  10
       3.2.2.  Traceroute to a SID . . . . . . . . . . . . . . . . .  12
     3.3.  A Hybrid OAM Using O-flag . . . . . . . . . . . . . . . .  13
     3.4.  Monitoring of SRv6 Paths  . . . . . . . . . . . . . . . .  16
   4.  Implementation Status . . . . . . . . . . . . . . . . . . . .  17
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  17
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  17
     6.1.  Segment Routing Header Flags  . . . . . . . . . . . . . .  17
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  18
   8.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  18
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  19
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  21

1.  Introduction

   As Segment Routing with IPv6 data plane (SRv6) [RFC8402] simply adds
   a new type of Routing Extension Header, existing IPv6 OAM mechanisms
   can be used in an SRv6 network.  This document describes how the
   existing IPv6 mechanisms for ping and trace route can be used in an
   SRv6 network.

   The document also introduces enhancements for OAM mechanism for SRv6
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