Deterministic Networking Architecture
RFC 8655
Document | Type | RFC - Proposed Standard (October 2019; No errata) | |
---|---|---|---|
Authors | Norman Finn , Pascal Thubert , Balazs Varga , János Farkas | ||
Last updated | 2019-10-24 | ||
Replaces | draft-finn-detnet-architecture | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html xml pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Lou Berger | ||
Shepherd write-up | Show (last changed 2018-09-14) | ||
IESG | IESG state | RFC 8655 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Deborah Brungard | ||
Send notices to | Lou Berger <lberger@labn.net> | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) N. Finn Request for Comments: 8655 Huawei Category: Standards Track P. Thubert ISSN: 2070-1721 Cisco B. Varga J. Farkas Ericsson October 2019 Deterministic Networking Architecture Abstract This document provides the overall architecture for Deterministic Networking (DetNet), which provides a capability to carry specified unicast or multicast data flows for real-time applications with extremely low data loss rates and bounded latency within a network domain. Techniques used include 1) reserving data-plane resources for individual (or aggregated) DetNet flows in some or all of the intermediate nodes along the path of the flow, 2) providing explicit routes for DetNet flows that do not immediately 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. DetNet operates at the IP layer and delivers service over lower-layer technologies such as MPLS and Time- Sensitive Networking (TSN) as defined by IEEE 802.1. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8655. 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 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. Terminology 2.1. Terms Used in This Document 2.2. Dictionary of Terms Used by TSN and DetNet 3. Providing the DetNet Quality of Service 3.1. Primary Goals Defining the DetNet QoS 3.2. Mechanisms to Achieve DetNet QoS 3.2.1. Resource Allocation 3.2.2. Service Protection 3.2.3. Explicit Routes 3.3. Secondary Goals for DetNet 3.3.1. Coexistence with Normal Traffic 3.3.2. Fault Mitigation 4. DetNet Architecture 4.1. DetNet Stack Model 4.1.1. Representative Protocol Stack Model 4.1.2. DetNet Data-Plane Overview 4.1.3. Network Reference Model 4.2. DetNet Systems 4.2.1. End System 4.2.2. DetNet Edge, Relay, and Transit Nodes 4.3. DetNet Flows 4.3.1. DetNet Flow Types 4.3.2. Source Transmission Behavior 4.3.3. Incomplete Networks 4.4. Traffic Engineering for DetNet 4.4.1. The Application Plane 4.4.2. The Controller Plane 4.4.3. The Network Plane 4.5. Queuing, Shaping, Scheduling, and Preemption 4.6. Service Instance 4.7. Flow Identification at Technology Borders 4.7.1. Exporting Flow Identification 4.7.2. Flow Attribute Mapping between Layers 4.7.3. Flow-ID Mapping Examples 4.8. Advertising Resources, Capabilities, and Adjacencies 4.9. Scaling to Larger Networks 4.10. Compatibility with Layer 2 5. Security Considerations 6. Privacy Considerations 7. IANA Considerations 8. Informative References Acknowledgements Authors' Addresses 1. Introduction This document provides the overall architecture for Deterministic Networking (DetNet), which provides a capability for the delivery of data flows with extremely low packet loss rates and bounded end-to- end delivery latency. DetNet is for networks that are under a single administrative control or within a closed group of administrative control; these include campus-wide networks and private WANs. DetNet is not for large groups of domains such as the Internet. DetNet operates at the IP layer and delivers service over lower-layerShow full document text