Deterministic Networking Problem Statement
draft-ietf-detnet-problem-statement-00

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detnet                                                           N. Finn
Internet-Draft                                                P. Thubert
Intended status: Standards Track                                   Cisco
Expires: October 6, 2016                                   April 4, 2016

               Deterministic Networking Problem Statement
                 draft-ietf-detnet-problem-statement-00

Abstract

   This paper documents the needs in various industries to establish
   multi-hop paths for characterized flows with deterministic properties
   .

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on October 6, 2016.

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  On Deterministic Networking . . . . . . . . . . . . . . . . .   4
   4.  Problem Statement . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Supported topologies  . . . . . . . . . . . . . . . . . .   6
     4.2.  Flow Characterization . . . . . . . . . . . . . . . . . .   6
     4.3.  Centralized Path Computation and Installation . . . . . .   6
     4.4.  Distributed Path Setup  . . . . . . . . . . . . . . . . .   7
     4.5.  Duplicated data format  . . . . . . . . . . . . . . . . .   8
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   9
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   The Deterministic Networking Use Cases
   [I-D.grossman-detnet-use-cases] document illustrates that beyond the
   classical case of industrial automation and control systems (IACS),
   there are in fact multiple industries with strong and yet relatively
   similar needs for deterministic network services with latency
   guarantees and ultra-low packet loss.

   The generalization of the needs for more deterministic networks have
   led to the IEEE 802.1 AVB Task Group becoming the Time-Sensitive
   Networking (TSN) [IEEE802.1TSNTG] Task Group (TG), with a much-
   expanded constituency from the industrial and vehicular markets.

   Along with this expansion, the networks in consideration are becoming
   larger and structured, requiring deterministic forwarding beyond the
   LAN boundaries.  For instance, IACS segregates the network along the
   broad lines of the Purdue Enterprise Reference Architecture (PERA)
   [ISA95], typically using deterministic local area networks for level
   2 control systems, whereas public infrastructures such as Electricity
   Automation require deterministic properties over the Wide Area.  The
   realization is now coming that the convergence of IT and Operational
   Technology (OT) networks requires Layer-3, as well as Layer-2,
   capabilities.

   While the initial user base has focused almost entirely on Ethernet
   physical media and Ethernet-based bridging protocol (from several
   Standards Development Organizations), the need for Layer-3 expressed
   above, must not be confined to Ethernet and Ethernet-like media, and

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