A YANG Data Model for Fabric Topology in Data Center Networks
draft-ietf-i2rs-yang-dc-fabric-network-topology-12

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Replaces draft-zhuang-i2rs-yang-dc-fabric-network-topology
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I2RS Working Group                                             Y. Zhuang
Internet-Draft                                                    D. Shi
Intended status: Standards Track                                  Huawei
Expires: May 25, 2019                                              R. Gu
                                                            China Mobile
                                                      H. Ananthakrishnan
                                                                 Netflix
                                                       November 21, 2018

     A YANG Data Model for Fabric Topology in Data Center Networks
           draft-ietf-i2rs-yang-dc-fabric-network-topology-12

Abstract

   This document defines a YANG data model for fabric topology in Data
   Center Networks and it 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 Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on May 25, 2019.

Copyright Notice

   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
   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

Zhuang, et al.            Expires May 25, 2019                  [Page 1]
Internet-Draft      Data model for DC fabric topology      November 2018

   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Definitions and Acronyms  . . . . . . . . . . . . . . . . . .   3
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Model Overview  . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Topology Model structure  . . . . . . . . . . . . . . . .   4
     3.2.  Fabric Topology Model . . . . . . . . . . . . . . . . . .   4
       3.2.1.  Fabric Topology . . . . . . . . . . . . . . . . . . .   4
       3.2.2.  Fabric node extension . . . . . . . . . . . . . . . .   5
       3.2.3.  Fabric termination-point extension  . . . . . . . . .   6
   4.  Fabric YANG Module  . . . . . . . . . . . . . . . . . . . . .   7
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  20
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  21
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  22
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  22
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  22
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  23
   Appendix A.  Non NMDA -state modules  . . . . . . . . . . . . . .  24
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  31

1.  Introduction

   A data center (DC) network can be composed of single or multiple
   fabrics which are also known as PODs (Points Of Delivery).  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, Fabric A may use VXLAN while
   Fabric B may use VLAN within a DC network.  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 NVO3 WG, such as Geneve [I-D. draft-ietf-nvo3-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
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