Deterministic Networking Use Cases
draft-ietf-detnet-use-cases-20

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Internet Engineering Task Force                         E. Grossman, Ed.
Internet-Draft                                                     DOLBY
Intended status: Informational                         December 19, 2018
Expires: June 22, 2019

                   Deterministic Networking Use Cases
                     draft-ietf-detnet-use-cases-20

Abstract

   This draft presents use cases from diverse industries which have in
   common a need for "deterministic flows".  "Deterministic" in this
   context means that such flows provide guaranteed bandwidth, bounded
   latency, and other properties germane to the transport of time-
   sensitive data.  These use cases differ notably in their network
   topologies and specific desired behavior, providing as a group broad
   industry context for DetNet.  For each use case, this document will
   identify the use case, identify representative solutions used today,
   and describe potential improvements that DetNet can enable.  The Use
   Case Common Themes section then extracts and enumerates the set of
   common properties implied by these use cases.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   Internet-Drafts are draft documents valid for a maximum of six months
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   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 June 22, 2019.

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

Grossman                  Expires June 22, 2019                 [Page 1]
Internet-Draft              DetNet Use Cases               December 2018

   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  . . . . . . . . . . . . . . . . . . . . . . . .   5
   2.  Pro Audio and Video . . . . . . . . . . . . . . . . . . . . .   7
     2.1.  Use Case Description  . . . . . . . . . . . . . . . . . .   7
       2.1.1.  Uninterrupted Stream Playback . . . . . . . . . . . .   7
       2.1.2.  Synchronized Stream Playback  . . . . . . . . . . . .   8
       2.1.3.  Sound Reinforcement . . . . . . . . . . . . . . . . .   8
       2.1.4.  Secure Transmission . . . . . . . . . . . . . . . . .   9
         2.1.4.1.  Safety  . . . . . . . . . . . . . . . . . . . . .   9
     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 . . . . . . . . . . . .  10
       2.3.3.  Integration of Reserved Streams into IT Networks  . .  10
       2.3.4.  Use of Unused Reservations by Best-Effort Traffic . .  10
       2.3.5.  Traffic Segregation . . . . . . . . . . . . . . . . .  11
         2.3.5.1.  Packet Forwarding Rules, VLANs and Subnets  . . .  11
         2.3.5.2.  Multicast Addressing (IPv4 and IPv6)  . . . . . .  11
       2.3.6.  Latency Optimization by a Central Controller  . . . .  12
       2.3.7.  Reduced Device Cost Due To Reduced Buffer Memory  . .  12
     2.4.  Pro Audio Asks  . . . . . . . . . . . . . . . . . . . . .  12
   3.  Electrical Utilities  . . . . . . . . . . . . . . . . . . . .  13
     3.1.  Use Case Description  . . . . . . . . . . . . . . . . . .  13
       3.1.1.  Transmission Use Cases  . . . . . . . . . . . . . . .  13
         3.1.1.1.  Protection  . . . . . . . . . . . . . . . . . . .  13
         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
       3.1.2.  Generation Use Case . . . . . . . . . . . . . . . . .  21
         3.1.2.1.  Control of the Generated Power  . . . . . . . . .  21
         3.1.2.2.  Control of the Generation Infrastructure  . . . .  22
       3.1.3.  Distribution use case . . . . . . . . . . . . . . . .  27