DetNet QoS Policy
draft-xiong-detnet-qos-policy-00

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DeNet WG                                                      Quan Xiong
Internet-Draft                                                Jinghai Yu
Intended status: Standards Track                         ZTE Corporation
Expires: April 21, 2019                                 October 18, 2018

                           DetNet QoS Policy
                    draft-xiong-detnet-qos-policy-00

Abstract

   This document proposes a Quality of Service (QoS) policy to apply
   Differentiated Services (DiffServ) model for Deterministic Networking
   (DetNet) and defines a DetNet DiffServ mechanism including DetNet IP
   and MPLS encapsulation.

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 April 21, 2019.

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   Copyright (c) 2018 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
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   described in the Simplified BSD License.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  DetNet DiffServ Overview  . . . . . . . . . . . . . . . . . .   3
     2.1.  DetNet Classifiers  . . . . . . . . . . . . . . . . . . .   3
     2.2.  DetNet Traffic Conditioners . . . . . . . . . . . . . . .   4
       2.2.1.  Order . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.3.  DetNet Per-hop Behavior . . . . . . . . . . . . . . . . .   4
     2.4.  DetNet Queuing  . . . . . . . . . . . . . . . . . . . . .   5
   3.  DetNet IP DiffServ Consideration  . . . . . . . . . . . . . .   5
   4.  DetNet MPLS DiffServ Consideration  . . . . . . . . . . . . .   5
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     8.1.  Informative References  . . . . . . . . . . . . . . . . .   6
     8.2.  Normative References  . . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   As defined in [I-D.ietf-detnet-architecture], 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.  DetNet and non-DetNet packets
   may be allowed to transmitted in the same network and more than one
   DetNet flows which has different priorities may be forwarded through
   the DetNet domain.  The DetNet Class of Service (CoS) should be taken
   into consideration to provide Quality of Service (QoS) for DetNet
   services.

   As discussed in [I-D.ietf-detnet-dp-sol-ip], Differentiated Services
   (DiffServ) can be used to provide traffic forwarding treatment for
   DetNet network.  The DiffServ architecture as specified in [RFC2475]
   defined a model that traffic entering a DiffServ domain is classified
   and conditioned at the boundaries and marked with a DiffServ Code
   Point (DSCP) defined in [RFC2474].  The DSCP is used at transit nodes
   to select the Per Hop Behavior (PHB) that determines the scheduling
   treatment.  And [RFC3270] provide a solution to support DiffServ for
   traffic marked with Traffic Class (TC) [RFC5462] transported over an
   MPLS network.

   This document proposes a QoS policy to apply DiffServ model for
   DetNet network and defines a DetNet DiffServ mechanism including
   DetNet IP and MPLS encapsulation.

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