TWAMP Light Extensions for Segment Routing Networks
draft-gandhi-ippm-twamp-srpm-00

Document Type Active Internet-Draft (candidate for ippm WG)
Authors Rakesh Gandhi  , Clarence Filsfils  , Daniel Voyer  , Mach Chen  , Bart Janssens 
Last updated 2020-10-30 (latest revision 2020-10-20)
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IPPM Working Group                                        R. Gandhi, Ed.
Internet-Draft                                               C. Filsfils
Intended status: Informational                       Cisco Systems, Inc.
Expires: April 23, 2021                                         D. Voyer
                                                             Bell Canada
                                                                 M. Chen
                                                                  Huawei
                                                             B. Janssens
                                                                    Colt
                                                        October 20, 2020

          TWAMP Light Extensions for Segment Routing Networks
                    draft-gandhi-ippm-twamp-srpm-00

Abstract

   Segment Routing (SR) leverages the source routing paradigm.  SR is
   applicable to both Multiprotocol Label Switching (SR-MPLS) and IPv6
   (SRv6) data planes.  This document describes RFC 5357 (Two-Way Active
   Measurement Protocol (TWAMP) Light) extensions for Delay and Loss
   Measurement in Segment Routing networks, for both SR-MPLS and SRv6
   data planes.

Status of This Memo

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   This Internet-Draft will expire on April 23, 2021.

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   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

Gandhi, et al.           Expires April 23, 2021                 [Page 1]
Internet-Draft TWAMP Light Extensions for Segment Routing   October 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions Used in This Document . . . . . . . . . . . . . .   3
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     2.2.  Abbreviations . . . . . . . . . . . . . . . . . . . . . .   3
     2.3.  Reference Topology  . . . . . . . . . . . . . . . . . . .   4
   3.  Probe Query Message . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Control Code Field Extension for TWAMP Light Messages . .   4
     3.2.  Loss Measurement Query Message Extensions . . . . . . . .   5
   4.  Probe Response Message  . . . . . . . . . . . . . . . . . . .   8
     4.1.  Loss Measurement Response Message Extensions  . . . . . .   8
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  11
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   Segment Routing (SR) leverages the source routing paradigm and
   greatly simplifies network operations for Software Defined Networks
   (SDNs).  SR is applicable to both Multiprotocol Label Switching (SR-
   MPLS) and IPv6 (SRv6) data planes.  Built-in SR Performance
   Measurement (PM) is one of the essential requirements to provide
   Service Level Agreements (SLAs).

   The One-Way Active Measurement Protocol (OWAMP) defined in [RFC4656]
   and Two-Way Active Measurement Protocol (TWAMP) defined in [RFC5357]
   provide capabilities for the measurement of various performance
   metrics in IP networks using probe messages.  These protocols rely on
   control-channel signaling to establish a test-channel over an UDP
   path.  The TWAMP Light [Appendix I in RFC5357] [BBF.TR-390] provides
   simplified mechanisms for active performance measurement in Customer
   IP networks by provisioning UDP paths and eliminates the need for
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