DetNet Data Plane: IP over IEEE 802.1 Time Sensitive Networking (TSN)
draft-ietf-detnet-ip-over-tsn-07

Document Type Active Internet-Draft (detnet WG)
Authors Balazs Varga  , J├ínos Farkas  , Andy Malis  , Stewart Bryant 
Last updated 2021-02-23 (latest revision 2021-02-19)
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Details
DetNet                                                     B. Varga, Ed.
Internet-Draft                                                 J. Farkas
Intended status: Informational                                  Ericsson
Expires: August 23, 2021                                        A. Malis
                                                        Malis Consulting
                                                               S. Bryant
                                                  Futurewei Technologies
                                                       February 19, 2021

 DetNet Data Plane: IP over IEEE 802.1 Time Sensitive Networking (TSN)
                    draft-ietf-detnet-ip-over-tsn-07

Abstract

   This document specifies the Deterministic Networking IP data plane
   when operating over a TSN sub-network.  This document does not define
   new procedures or processes.  Whenever this document makes statements
   or recommendations, these are taken from normative text in the
   referenced RFCs.

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
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   Drafts is at https://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 August 23, 2021.

Copyright Notice

   Copyright (c) 2021 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

Varga, et al.            Expires August 23, 2021                [Page 1]
Internet-Draft             DetNet IP over TSN              February 2021

   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Terms Used In This Document . . . . . . . . . . . . . . .   3
     2.2.  Abbreviations . . . . . . . . . . . . . . . . . . . . . .   3
   3.  DetNet IP Data Plane Overview . . . . . . . . . . . . . . . .   3
   4.  DetNet IP Flows over an IEEE 802.1   TSN sub-network  . . . .   4
     4.1.  Functions for DetNet Flow to TSN Stream Mapping . . . . .   5
     4.2.  TSN requirements of IP DetNet nodes . . . . . . . . . . .   6
     4.3.  Service protection within the TSN sub-network . . . . . .   7
     4.4.  Aggregation during DetNet flow to TSN Stream mapping  . .   7
   5.  Management and Control Implications . . . . . . . . . . . . .   7
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     9.1.  Normative references  . . . . . . . . . . . . . . . . . .  10
     9.2.  Informative references  . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   Deterministic Networking (DetNet) is a service that can be offered by
   a network to DetNet flows.  DetNet provides these flows extremely low
   packet loss rates and assured maximum end-to-end delivery latency.
   General background and concepts of DetNet can be found in the DetNet
   Architecture [RFC8655].

   [RFC8939] specifies the DetNet data plane operation for IP hosts and
   routers that provide DetNet service to IP encapsulated data.  This
   document focuses on the scenario where DetNet IP nodes are
   interconnected by a TSN sub-network.

   The DetNet Architecture decomposes the DetNet related data plane
   functions into two sub-layers: a service sub-layer and a forwarding
   sub-layer.  The service sub-layer is used to provide DetNet service
   protection and reordering.  The forwarding sub-layer is used to
   provides congestion protection (low loss, assured latency, and
   limited reordering).  As described in [RFC8939] no DetNet specific
   headers are added to support DetNet IP flows.  So, only the
   forwarding sub-layer functions can be supported inside the DetNet IP
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