Operations, Administration, and Maintenance (OAM) in Segment Routing Networks with IPv6 Data plane (SRv6)
draft-ietf-6man-spring-srv6-oam-08

Document Type Active Internet-Draft (6man WG)
Authors Zafar Ali  , Clarence Filsfils  , Satoru Matsushima  , Daniel Voyer  , Mach Chen 
Last updated 2020-11-15 (latest revision 2020-10-30)
Replaces draft-ali-6man-spring-srv6-oam
Stream IETF
Intended RFC status Proposed Standard
Formats plain text pdf htmlized (tools) htmlized bibtex
Stream WG state Submitted to IESG for Publication
Document shepherd Ole Trøan
Shepherd write-up Show (last changed 2020-11-08)
IESG IESG state AD Evaluation
Consensus Boilerplate Yes
Telechat date
Responsible AD Erik Kline
Send notices to =?utf-8?q?Ole_Tr=C3=B8an?= <ot@cisco.com>
6man                                                              Z. Ali
Internet-Draft                                               C. Filsfils
Intended status: Standards Track                           Cisco Systems
Expires: May 3, 2021                                       S. Matsushima
                                                                Softbank
                                                                D. Voyer
                                                             Bell Canada
                                                                 M. Chen
                                                                  Huawei
                                                        October 30, 2020

  Operations, Administration, and Maintenance (OAM) in Segment Routing
                  Networks with IPv6 Data plane (SRv6)
                   draft-ietf-6man-spring-srv6-oam-08

Abstract

   This document describes how the existing IPv6 mechanisms for ping and
   traceroute can be used in an SRv6 network.  The document also
   specifies the OAM flag in the Segment Routing Header (SRH) for
   performing controllable and predictable flow sampling from segment
   endpoints.  In addition, the document describes how a centralized
   monitoring system performs a path continuity check between any nodes
   within an SRv6 domain.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 3, 2021.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Ali, et al.                Expires May 3, 2021                  [Page 1]
Internet-Draft                  SRv6 OAM                    October 2020

   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
   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 . . . . . . . . . . . . . . . . . .   6
     2.2.  OAM Operations  . . . . . . . . . . . . . . . . . . . . .   7
   3.  Illustrations . . . . . . . . . . . . . . . . . . . . . . . .   8
     3.1.  Ping in SRv6 Networks . . . . . . . . . . . . . . . . . .   8
       3.1.1.  Classic Ping  . . . . . . . . . . . . . . . . . . . .   8
       3.1.2.  Pinging a SID . . . . . . . . . . . . . . . . . . . .  10
     3.2.  Traceroute  . . . . . . . . . . . . . . . . . . . . . . .  10
       3.2.1.  Classic Traceroute  . . . . . . . . . . . . . . . . .  11
       3.2.2.  Traceroute to a SID . . . . . . . . . . . . . . . . .  12
     3.3.  A Hybrid OAM Using O-flag . . . . . . . . . . . . . . . .  14
     3.4.  Monitoring of SRv6 Paths  . . . . . . . . . . . . . . . .  16
   4.  Implementation Status . . . . . . . . . . . . . . . . . . . .  18
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  18
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  18
   8.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  18
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  20
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  20
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  20
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  22

1.  Introduction

   As Segment Routing with IPv6 data plane (SRv6) [RFC8402] simply adds
   a new type of Routing Extension Header, existing IPv6 OAM mechanisms
Show full document text