Deterministic Networking Architecture
draft-ietf-detnet-architecture-01

Document Type Active Internet-Draft (detnet WG)
Last updated 2017-03-13
Replaces draft-finn-detnet-architecture
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DetNet                                                           N. Finn
Internet-Draft                               Huawei Technologies Co. Ltd
Intended status: Standards Track                              P. Thubert
Expires: September 14, 2017                                        Cisco
                                                                B. Varga
                                                               J. Farkas
                                                                Ericsson
                                                          March 13, 2017

                 Deterministic Networking Architecture
                   draft-ietf-detnet-architecture-01

Abstract

   Deterministic Networking (DetNet) provides a capability to carry
   specified unicast or multicast data flows for real-time applications
   with extremely low data loss rates and bounded latency.  Techniques
   used include: 1) reserving data plane resources for individual (or
   aggregated) DetNet flows in some or all of the intermediate nodes
   (e.g. bridges or routers) along the path of the flow; 2) providing
   explicit routes for DetNet flows that do not rapidly change with the
   network topology; and 3) distributing data from DetNet flow packets
   over time and/or space to ensure delivery of each packet's data' in
   spite of the loss of a path.  The capabilities can be managed by
   configuration, or by manual or automatic network management.

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
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   This Internet-Draft will expire on September 14, 2017.

Finn, et al.           Expires September 14, 2017               [Page 1]
Internet-Draft    Deterministic Networking Architecture       March 2017

Copyright Notice

   Copyright (c) 2017 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Terms used in this document . . . . . . . . . . . . . . .   4
     2.2.  IEEE 802 TSN to DetNet dictionary . . . . . . . . . . . .   6
   3.  Providing the DetNet Quality of Service . . . . . . . . . . .   6
     3.1.  Congestion protection . . . . . . . . . . . . . . . . . .   8
     3.2.  Explicit routes . . . . . . . . . . . . . . . . . . . . .   9
     3.3.  Jitter Reduction  . . . . . . . . . . . . . . . . . . . .  10
     3.4.  Packet Replication and Elimination  . . . . . . . . . . .  10
     3.5.  Packet encoding for service protection  . . . . . . . . .  12
   4.  DetNet Architecture . . . . . . . . . . . . . . . . . . . . .  12
     4.1.  DetNet systems  . . . . . . . . . . . . . . . . . . . . .  12
       4.1.1.  Network reference model . . . . . . . . . . . . . . .  13
       4.1.2.  End system  . . . . . . . . . . . . . . . . . . . . .  14
     4.2.  Traffic Engineering for DetNet  . . . . . . . . . . . . .  15
       4.2.1.  The Application Plane . . . . . . . . . . . . . . . .  16
       4.2.2.  The Controller Plane  . . . . . . . . . . . . . . . .  16
       4.2.3.  The Network Plane . . . . . . . . . . . . . . . . . .  17
     4.3.  DetNet flows  . . . . . . . . . . . . . . . . . . . . . .  18
       4.3.1.  DetNet flow types . . . . . . . . . . . . . . . . . .  18
       4.3.2.  Source guarantees . . . . . . . . . . . . . . . . . .  19
       4.3.3.  Incomplete Networks . . . . . . . . . . . . . . . . .  20
     4.4.  Queuing, Shaping, Scheduling, and Preemption  . . . . . .  20
     4.5.  Service instance  . . . . . . . . . . . . . . . . . . . .  21
     4.6.  Coexistence with normal traffic . . . . . . . . . . . . .  22
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