A YANG Data Model for Fabric Topology in Data Center Networks
draft-ietf-i2rs-yang-dc-fabric-network-topology-11

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Last updated 2018-08-01
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: February 2, 2019                                          R. Gu
                                                            China Mobile
                                                      H. Ananthakrishnan
                                                                 Netflix
                                                          August 1, 2018

     A YANG Data Model for Fabric Topology in Data Center Networks
           draft-ietf-i2rs-yang-dc-fabric-network-topology-11

Abstract

   This document defines a YANG data model for fabric topology in Data
   Center Networks and it represents only one possible view of the dc
   fabric.

Status of This Memo

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   This Internet-Draft will expire on February 2, 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
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Zhuang, et al.          Expires February 2, 2019                [Page 1]
Internet-Draft      Data model for DC fabric topology        August 2018

   the Trust Legal Provisions and are provided without warranty as
   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  . . . . . . . . . . . . . . . . . . . . . . .  30

1.  Introduction

   Normally, a data center (DC) network is 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 will result in considerable complexity,
   requiring a fair amount of sophistication.

   Luckily, 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.  This way, the overall management task becomes very
   flexible and makes it easy to expand and adopt to DC networks that
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