Well-Known Port Assignments for the One-Way Active Measurement Protocol (OWAMP) and the Two-Way Active Measurement Protocol (TWAMP)
RFC 8545

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Internet Engineering Task Force (IETF)                    A. Morton, Ed.
Request for Comments: 8545                                     AT&T Labs
Updates: 4656, 5357                                       G. Mirsky, Ed.
Category: Standards Track                                      ZTE Corp.
ISSN: 2070-1721                                               March 2019

                    Well-Known Port Assignments for
          the One-Way Active Measurement Protocol (OWAMP) and
            the Two-Way Active Measurement Protocol (TWAMP)

Abstract

   This memo explains the motivation and describes the reassignment of
   well-known ports for the One-Way Active Measurement Protocol (OWAMP)
   and the Two-Way Active Measurement Protocol (TWAMP) for control and
   measurement.  It also clarifies the meaning and composition of these
   Standards Track protocol names for the industry.

   This memo updates RFCs 4656 and 5357, in terms of the UDP well-known
   port assignments, and it clarifies the complete OWAMP and TWAMP
   protocol composition for the industry.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8545.

Morton & Mirsky              Standards Track                    [Page 1]
RFC 8545              OWAMP/TWAMP Well-Known Ports            March 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
   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
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   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 ....................................................3
   2. Requirements Language ...........................................3
   3. Scope ...........................................................3
   4. Definitions and Background ......................................3
   5. New Well-Known Ports ............................................5
      5.1. Impact on TWAMP-Control Protocol ...........................5
      5.2. Impact on OWAMP-Control Protocol ...........................6
      5.3. Impact on OWAMP-Test/TWAMP-Test Protocols ..................6
   6. Security Considerations .........................................7
   7. IANA Considerations .............................................8
   8. References ......................................................8
      8.1. Normative References .......................................8
      8.2. Informative References .....................................9
   Appendix A. Background on TWAMP Light .............................10
   Acknowledgements ..................................................11
   Contributors ......................................................11
   Authors' Addresses ................................................11

Morton & Mirsky              Standards Track                    [Page 2]
RFC 8545              OWAMP/TWAMP Well-Known Ports            March 2019

1.  Introduction

   The IETF IP Performance Metrics (IPPM) Working Group first developed
   the One-Way Active Measurement Protocol (OWAMP), as specified in
   [RFC4656].  Further protocol development to support testing resulted
   in the Two-Way Active Measurement Protocol (TWAMP), as specified in
   [RFC5357].

   Both OWAMP and TWAMP require the implementation of a control and mode
   negotiation protocol (OWAMP-Control and TWAMP-Control) that employs
   the reliable transport services of TCP (including security
   configuration and key derivation).  The control protocols arrange for
   the configuration and management of test sessions using the
   associated test protocol (OWAMP-Test or TWAMP-Test) on UDP transport.

   The IETF recognizes the value of assigning a well-known UDP port to
   the OWAMP-Test and TWAMP-Test protocols and also recognizes that this
   goal can be easily arranged through port reassignments.

2.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and