Deterministic Networking Use Cases
RFC 8578

Document Type RFC - Informational (May 2019; No errata)
Last updated 2019-05-10
Replaces draft-grossman-detnet-use-cases
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Stream WG state Submitted to IESG for Publication
Document shepherd Lou Berger
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IESG IESG state RFC 8578 (Informational)
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Send notices to Lou Berger <lberger@labn.net>
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Internet Engineering Task Force (IETF)                  E. Grossman, Ed.
Request for Comments: 8578                                         DOLBY
Category: Informational                                         May 2019
ISSN: 2070-1721

                   Deterministic Networking Use Cases

Abstract

   This document presents use cases for diverse industries that 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 Deterministic Networking (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.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are candidates for any level of Internet
   Standard; see 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/rfc8578.

Grossman                      Informational                     [Page 1]
RFC 8578                    DetNet Use Cases                    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 ....................................................6
   2. Pro Audio and Video .............................................7
      2.1. Use Case Description .......................................7
           2.1.1. Uninterrupted Stream Playback .......................8
           2.1.2. Synchronized Stream Playback ........................9
           2.1.3. Sound Reinforcement .................................9
           2.1.4. Secure Transmission ................................10
                  2.1.4.1. Safety ....................................10
      2.2. Pro Audio Today ...........................................10
      2.3. Pro Audio in the Future ...................................10
           2.3.1. Layer 3 Interconnecting Layer 2 Islands ............10
           2.3.2. High-Reliability Stream Paths ......................11
           2.3.3. Integration of Reserved Streams into IT Networks ...11
           2.3.4. Use of Unused Reservations by Best-Effort Traffic ..11
           2.3.5. Traffic Segregation ................................11
                  2.3.5.1. Packet-Forwarding Rules, VLANs,
                           and Subnets ...............................12
                  2.3.5.2. Multicast Addressing (IPv4 and IPv6) ......12
           2.3.6. Latency Optimization by a Central Controller .......12
           2.3.7. Reduced Device Costs due to Reduced Buffer Memory ..13
      2.4. Pro Audio Requests to the IETF ............................13
   3. Electrical Utilities ...........................................14
      3.1. Use Case Description ......................................14
           3.1.1. Transmission Use Cases .............................14
                  3.1.1.1. Protection ................................14
                  3.1.1.2. Intra-substation Process Bus
                           Communications ............................21
                  3.1.1.3. Wide-Area Monitoring and Control Systems ..23
                  3.1.1.4. WAN Engineering Guidelines
                           Requirement Classification ................25

Grossman                      Informational                     [Page 2]
RFC 8578                    DetNet Use Cases                    May 2019

           3.1.2. Generation Use Case ................................26
                  3.1.2.1. Control of the Generated Power ............26
                  3.1.2.2. Control of the Generation Infrastructure ..27
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