SRv6 for Deterministic Networking (DetNet)
draft-geng-spring-srv6-for-detnet-00

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Network Working Group                                            X. Geng
Internet-Draft                                                     Z. Li
Intended status: Informational                                   M. Chen
Expires: January 9, 2020                                          Huawei
                                                            July 8, 2019

               SRv6 for Deterministic Networking (DetNet)
                  draft-geng-spring-srv6-for-detnet-00

Abstract

   Deterministic Networking provides service with low jitter, bounded
   latency and low loss rate, using technologies of explicit route,
   resource reservation and service protection.This document specifies
   how to implement Deterministic Networking (DetNet) in a SRv6 Network.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on January 9, 2020.

Copyright Notice

   Copyright (c) 2019 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

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Internet-Draft               SRv6 for DetNet                   July 2019

   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  SRv6 for DetNet Overview  . . . . . . . . . . . . . . . . . .   4
   4.  Service Protection  . . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Service Protection Scenarios  . . . . . . . . . . . . . .   6
     4.2.  Data Plane Considerations . . . . . . . . . . . . . . . .   8
     4.3.  Control Plane Considerations  . . . . . . . . . . . . . .   8
     4.4.  Functions for Service Protection  . . . . . . . . . . . .   9
       4.4.1.  End. B. Replication: Packet Replication Function  . .   9
       4.4.2.  End. B. Elimination: Packet Elimination Function  . .   9
   5.  Explicit Route  . . . . . . . . . . . . . . . . . . . . . . .  10
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   9.  Normative References  . . . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   With more and more applications running in the Internet, quality of
   the service gains more and more attention, especially for some new
   applications, for example Cloud VR, Cloud Game, HDV (high-definition
   video) and so on, SLA (Service Level Agreement), including jitter,
   delay and loss rate, influences the users' experience significantly.
   So SLA guarantee is an important issue which requires new
   technologies and solutions for the network.

   Deterministic Networking (DetNet defined in
   [I-D.ietf-detnet-architecture]) provides a capability to carry
   specified data flows for real-time applications with extremely low
   data loss rates, low jitter and bounded latency within a network
   domain.  Techniques used include: 1) providing explicit paths for
   DetNet flows that satisfies the SLA requirement from user and do not
   immediately change with the network topology; 2) reserving data plane
   resources for DetNet flows along the allocated path of the flow; 3)
   replicates DetNet flows into two or more copies and transport
   different copies through different path in parallel, called service
   protection.

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