YANG Data Model for the Precision Time Protocol (PTP)
RFC 8575

Document Type RFC - Proposed Standard (May 2019; No errata)
Last updated 2019-05-07
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Internet Engineering Task Force (IETF)                     Y. Jiang, Ed.
Request for Comments: 8575                                        Huawei
Category: Standards Track                                         X. Liu
ISSN: 2070-1721                                              Independent
                                                                   J. Xu
                                                                  Huawei
                                                        R. Cummings, Ed.
                                                    National Instruments
                                                                May 2019

         YANG Data Model for the Precision Time Protocol (PTP)

Abstract

   This document defines a YANG data model for the configuration of
   devices and clocks using the Precision Time Protocol (PTP) as
   specified in IEEE Std 1588-2008.  It also defines the retrieval of
   the configuration information, the data sets and the running states
   of PTP clocks.  The YANG module in this document conforms to the
   Network Management Datastore Architecture (NMDA).

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/rfc8575.

Jiang, et al.                Standards Track                    [Page 1]
RFC 8575                 YANG Data Model for PTP                May 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
   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.  Conventions Used in This Document . . . . . . . . . . . .   4
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  IEEE Std 1588-2008 YANG Data Model Hierarchy  . . . . . . . .   5
     2.1.  Interpretations from IEEE 1588 Working Group  . . . . . .   7
     2.2.  Configuration and State . . . . . . . . . . . . . . . . .   8
   3.  IEEE Std 1588-2008 YANG Module  . . . . . . . . . . . . . . .   9
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  21
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  22
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  22
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  22
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  23
   Appendix A.  Transferring YANG Work to the IEEE 1588 WG . . . . .  25
     A.1.  Assumptions for the Transfer  . . . . . . . . . . . . . .  26
     A.2.  Intellectual Property Considerations  . . . . . . . . . .  26
     A.3.  Namespace and Module Name . . . . . . . . . . . . . . . .  27
     A.4.  IEEE 1588 YANG Modules in ASCII Format  . . . . . . . . .  28
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  29
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  30

1.  Introduction

   As a synchronization protocol, IEEE Std 1588-2008 [IEEE1588] is
   widely supported in the carrier networks, industrial networks,
   automotive networks, and many other applications.  It can provide
   high precision time synchronization as fine as nanoseconds.  The
   protocol depends on a Precision Time Protocol (PTP) engine to decide
   its own state automatically, and a PTP transportation layer to carry
   the PTP timing and various quality messages.  The configuration
   parameters and state data sets of IEEE Std 1588-2008 are numerous.

Jiang, et al.                Standards Track                    [Page 2]
RFC 8575                 YANG Data Model for PTP                May 2019

   According to the concepts described in [RFC3444], IEEE Std 1588-2008
   itself provides an information model in its normative specifications
   for the data sets (in IEEE Std 1588-2008 clause 8).  Some
   standardization organizations, including the IETF, have specified
   data models in MIBs (Management Information Bases) for IEEE Std
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