Deterministic Networking Problem Statement
draft-ietf-detnet-problem-statement-01

Document Type Active Internet-Draft (detnet WG)
Last updated 2016-09-28
Replaces draft-finn-detnet-problem-statement
Stream IETF
Intended RFC status (None)
Formats plain text xml pdf html bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
detnet                                                           N. Finn
Internet-Draft                                             Self-employed
Intended status: Informational                                P. Thubert
Expires: April 1, 2017                                             Cisco
                                                      September 28, 2016

               Deterministic Networking Problem Statement
                 draft-ietf-detnet-problem-statement-01

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
   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 http://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 April 1, 2017.

Copyright Notice

   Copyright (c) 2016 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
   (http://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.

Finn & Thubert            Expires April 1, 2017                 [Page 1]
Internet-Draft Deterministic Networking Problem Statement September 2016

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  On Deterministic Networking . . . . . . . . . . . . . . . . .   3
   3.  Problem Statement . . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  Supported topologies  . . . . . . . . . . . . . . . . . .   6
     3.2.  Flow Characterization . . . . . . . . . . . . . . . . . .   6
     3.3.  Centralized Path Computation and Installation . . . . . .   6
     3.4.  Distributed Path Setup  . . . . . . . . . . . . . . . . .   7
     3.5.  Duplicated data format  . . . . . . . . . . . . . . . . .   8
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   9
   7.  Informative References  . . . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   The Deterministic Networking Use Cases [I-D.ietf-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
   while such media must be encompassed by any useful DetNet
Show full document text