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
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
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 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
Geng, et al. Expires January 9, 2020 [Page 1]
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.
Geng, et al. Expires January 9, 2020 [Page 2]
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