A YANG Data Model for Fabric Topology in Data-Center Networks
RFC 8542
| Document | Type | RFC - Proposed Standard (March 2019; No errata) | |
|---|---|---|---|
| Authors | Zhuangyan , Danian Shi , Rong Gu , Hariharan Ananthakrishnan | ||
| Last updated | 2019-03-25 | ||
| Replaces | draft-zhuang-i2rs-yang-dc-fabric-network-topology | ||
| Stream | Internent Engineering Task Force (IETF) | ||
| Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
| Yang Validation | ☯ 0 errors, 0 warnings. | ||
| Reviews | |||
| Additional Resources | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Susan Hares | ||
| Shepherd write-up | Show (last changed 2018-02-09) | ||
| IESG | IESG state | RFC 8542 (Proposed Standard) | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Martin Vigoureux | ||
| Send notices to | Susan Hares <shares@ndzh.com> | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) Y. Zhuang
Request for Comments: 8542 D. Shi
Category: Standards Track Huawei
ISSN: 2070-1721 R. Gu
China Mobile
H. Ananthakrishnan
Netflix
March 2019
A YANG Data Model for Fabric Topology in Data-Center Networks
Abstract
This document defines a YANG data model for fabric topology in data-
center networks and represents one possible view of the data-center
fabric. This document focuses on the data model only and does not
endorse any kind of network design that could be based on the
abovementioned model.
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/rfc8542.
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.
Zhuang, et al. Standards Track [Page 1]
RFC 8542 Data Model for DC Fabric Topology March 2019
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Definitions and Acronyms . . . . . . . . . . . . . . . . . . 3
2.1. Key Words . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
3. Model Overview . . . . . . . . . . . . . . . . . . . . . . . 4
3.1. Topology Model Structure . . . . . . . . . . . . . . . . 4
3.2. Fabric Topology Model . . . . . . . . . . . . . . . . . . 4
3.2.1. Fabric Topology . . . . . . . . . . . . . . . . . . . 5
3.2.2. Fabric Node Extension . . . . . . . . . . . . . . . . 6
3.2.3. Fabric Termination-Point Extension . . . . . . . . . 7
4. Fabric YANG Modules . . . . . . . . . . . . . . . . . . . . . 8
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 21
6. Security Considerations . . . . . . . . . . . . . . . . . . . 22
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.1. Normative References . . . . . . . . . . . . . . . . . . 23
7.2. Informative References . . . . . . . . . . . . . . . . . 24
Appendix A. Non-NMDA-State Modules . . . . . . . . . . . . . . . 25
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 32
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 32
1. Introduction
A data-center (DC) network can be composed of single or multiple
fabrics, which are also known as Points Of Delivery (PODs). These
fabrics may be heterogeneous due to implementation of different
technologies when a DC network is upgraded or new techniques and
features are rolled out. For example, within a DC network, Fabric A
may use Virtual eXtensible Local Area Network (VXLAN) while Fabric B
may use VLAN. Likewise, an existing fabric may use VXLAN while a new
fabric (for example, a fabric introduced for DC upgrade and
expansion) may implement a technique discussed in the NVO3 Working
Group, such as Geneve [GENEVE]. The configuration and management of
such DC networks with heterogeneous fabrics could result in
considerable complexity.
For a DC network, a fabric can be considered as an atomic structure
for management purposes. From this point of view, the management of
the DC network can be decomposed into a set of tasks to manage each
fabric separately, as well as the fabric interconnections. The
advantage of this method is to make the overall management tasks
flexible and easy to extend in the future.
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