Use Cases for Data Center Network Virtualization Overlay Networks
RFC 8151

Document Type RFC - Informational (May 2017; No errata)
Last updated 2017-05-26
Replaces draft-mity-nvo3-use-case
Stream IETF
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IESG IESG state RFC 8151 (Informational)
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Send notices to "Matthew Bocci" <matthew.bocci@nokia.com>
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Internet Engineering Task Force (IETF)                           L. Yong
Request for Comments: 8151                                     L. Dunbar
Category: Informational                                           Huawei
ISSN: 2070-1721                                                   M. Toy
                                                                 Verizon
                                                                A. Isaac
                                                        Juniper Networks
                                                               V. Manral
                                                             Nano Sec Co
                                                                May 2017

   Use Cases for Data Center Network Virtualization Overlay Networks

Abstract

   This document describes Network Virtualization over Layer 3 (NVO3)
   use cases that can be deployed in various data centers and serve
   different data-center applications.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see 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
   http://www.rfc-editor.org/info/rfc8151.

Yong, et al.                  Informational                     [Page 1]
RFC 8151                      NVO3 Use Case                     May 2017

Copyright Notice

   Copyright (c) 2017 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
   (http://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 ....................................................3
      1.1. Terminology ................................................4
      1.2. NVO3 Background ............................................5
   2. DC with a Large Number of Virtual Networks ......................6
   3. DC NVO3 Virtual Network and External Network Interconnection ....6
      3.1. DC NVO3 Virtual Network Access via the Internet ............7
      3.2. DC NVO3 Virtual Network and SP WAN VPN Interconnection .....8
   4. DC Applications Using NVO3 ......................................9
      4.1. Supporting Multiple Technologies ...........................9
      4.2. DC Applications Spanning Multiple Physical Zones ..........10
      4.3. Virtual Data Center (vDC) .................................10
   5. Summary ........................................................12
   6. Security Considerations ........................................12
   7. IANA Considerations ............................................12
   8. Informative References .........................................13
   Acknowledgements...................................................14
   Contributors ......................................................15
   Authors' Addresses.................................................16

Yong, et al.                  Informational                     [Page 2]
RFC 8151                      NVO3 Use Case                     May 2017

1.  Introduction

   Server virtualization has changed the Information Technology (IT)
   industry in terms of the efficiency, cost, and speed of providing new
   applications and/or services such as cloud applications.  However,
   traditional data center (DC) networks have limits in supporting cloud
   applications and multi-tenant networks [RFC7364].  The goal of data
   center Network Virtualization over Layer 3 (NVO3) networks is to
   decouple the communication among tenant systems from DC physical
   infrastructure networks and to allow one physical network
   infrastructure to:

   o  carry many NVO3 virtual networks and isolate the traffic of
      different NVO3 virtual networks on a physical network.

   o  provide independent address space in individual NVO3 virtual
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