Deterministic Networking Use Cases
draft-ietf-detnet-use-cases-17

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Internet Engineering Task Force                         E. Grossman, Ed.
Internet-Draft                                                     DOLBY
Intended status: Informational                             June 26, 2018
Expires: December 28, 2018

                   Deterministic Networking Use Cases
                     draft-ietf-detnet-use-cases-17

Abstract

   This draft documents requirements in several diverse industries to
   establish multi-hop paths for characterized flows with deterministic
   properties.  In this context deterministic implies that flows can be
   established which provide guaranteed bandwidth and latency which can
   be established from either a Layer 2 or Layer 3 (IP) interface, and
   which can co-exist on an IP network with best-effort traffic.

   Additional requirements include optional redundant paths, very high
   reliability paths, time synchronization, and clock distribution.
   Industries considered include professional audio, electrical
   utilities, building automation systems, wireless for industrial,
   cellular radio, industrial machine-to-machine, mining, private
   blockchain, and network slicing.

   For each case, this document will identify the application, identify
   representative solutions used today, and the improvements IETF DetNet
   solutions may enable.

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 December 28, 2018.

Grossman                Expires December 28, 2018               [Page 1]
Internet-Draft              DetNet Use Cases                   June 2018

Copyright Notice

   Copyright (c) 2018 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
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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  . . . . . . . . . . . . . . . . . . . . . . . .   5
   2.  Pro Audio and Video . . . . . . . . . . . . . . . . . . . . .   6
     2.1.  Use Case Description  . . . . . . . . . . . . . . . . . .   6
       2.1.1.  Uninterrupted Stream Playback . . . . . . . . . . . .   7
       2.1.2.  Synchronized Stream Playback  . . . . . . . . . . . .   7
       2.1.3.  Sound Reinforcement . . . . . . . . . . . . . . . . .   8
       2.1.4.  Deterministic Time to Establish Streaming . . . . . .   8
       2.1.5.  Secure Transmission . . . . . . . . . . . . . . . . .   8
         2.1.5.1.  Safety  . . . . . . . . . . . . . . . . . . . . .   8
     2.2.  Pro Audio Today . . . . . . . . . . . . . . . . . . . . .   9
     2.3.  Pro Audio Future  . . . . . . . . . . . . . . . . . . . .   9
       2.3.1.  Layer 3 Interconnecting Layer 2 Islands . . . . . . .   9
       2.3.2.  High Reliability Stream Paths . . . . . . . . . . . .   9
       2.3.3.  Integration of Reserved Streams into IT Networks  . .   9
       2.3.4.  Use of Unused Reservations by Best-Effort Traffic . .  10
       2.3.5.  Traffic Segregation . . . . . . . . . . . . . . . . .  10
         2.3.5.1.  Packet Forwarding Rules, VLANs and Subnets  . . .  10
         2.3.5.2.  Multicast Addressing (IPv4 and IPv6)  . . . . . .  11
       2.3.6.  Latency Optimization by a Central Controller  . . . .  11
       2.3.7.  Reduced Device Cost Due To Reduced Buffer Memory  . .  11
     2.4.  Pro Audio Asks  . . . . . . . . . . . . . . . . . . . . .  12
   3.  Electrical Utilities  . . . . . . . . . . . . . . . . . . . .  12
     3.1.  Use Case Description  . . . . . . . . . . . . . . . . . .  12
       3.1.1.  Transmission Use Cases  . . . . . . . . . . . . . . .  12
         3.1.1.1.  Protection  . . . . . . . . . . . . . . . . . . .  12
         3.1.1.2.  Intra-Substation Process Bus Communications . . .  18
         3.1.1.3.  Wide Area Monitoring and Control Systems  . . . .  19
         3.1.1.4.  IEC 61850 WAN engineering guidelines requirement
                   classification  . . . . . . . . . . . . . . . . .  20