YANG Model of IEEE 802.1AS
draft-benhadjsaid-detnet-gptp-yang-00

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Deterministic Networking                                S. Ben Hadj Said
Internet-Draft                                                    M. Boc
Intended status: Standards Track                               CEA, LIST
Expires: September 30, 2018                               March 29, 2018

                       YANG Model of IEEE 802.1AS
                 draft-benhadjsaid-detnet-gptp-yang-00

Abstract

   This document describes a YANG data model for the management of IEEE
   802.1AS module in network devices.  This data model includes
   configuration data and state data (status information and counters
   for the collection of statistics).

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
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   This Internet-Draft will expire on September 30, 2018.

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   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Ben Hadj Said & Boc    Expires September 30, 2018               [Page 1]
Internet-Draft           DetNet gptp yang model               March 2018

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Tree Diagrams . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  IEEE 802.1AS: Overview  . . . . . . . . . . . . . . . . . . .   4
   5.  IEEE 802.1AS YANG data model  . . . . . . . . . . . . . . . .   6
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  41
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  42
   8.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  42
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  42
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  42
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  42
     10.2.  Informative References . . . . . . . . . . . . . . . . .  43
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  43

1.  Introduction

   Multiple use cases described in [I-D.ietf-detnet-use-cases] have
   highlighted the need for Deterministic Networking (DetNet) service
   where an accurate time synchronization, low packet loss rates, and
   low and stable end-to-end latencies are ensured.  According to
   [I-D.ietf-detnet-flow-information-model], one way to provide the
   DetNet service for Layer 2 flows is to use the Time-Sensitive
   Networking (TSN) mechanisms that were specified by IEEE 802.1 TSN
   working group [IEEE8021TSN] for a bridged or virtually bridged Local
   Area Networks.  The documents [I-D.ietf-detnet-architecture] (see
   Section 4) and [I-D.ietf-detnet-flow-information-model] target to use
   the Centralized Network / Distributed user model out of the three
   models specified by [IEEE8021Qcc].  In this model, the network
   configuration is done via a central entity via a network management
   protocol (e.g.  SNMP, NETCONF [RFC6241], etc.).

   Time synchronization is a key feature for DetNet service.  To ensure
   an accurate synchronization, the IEEE 802.1 TSN group is relying on
   the standard IEEE 802.1AS (generalized Precision Time Protocol
   gPTP)[IEEE8021AS].  This standard allows to synchronize clocks of the
   different Ethernet devices across bridged or virtually bridged Local
   Area Network.  The principle of IEEE 802.1AS consists in electing,
   dynamically, one of the devices to be the grandmaster to whom the
   rest of devices synchronize their clocks thanks to the Best Master
   Clock Algorithm (BMCA).  IEEE 802.1AS requires that several
   parameters to be configured with the same value in each device
   participating in the time synchronization domain.  For example, the
   frequency with which the Sync messages are sent via each link should
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