Framework for Data Center (DC) Network Virtualization
RFC 7365

Document Type RFC - Informational (October 2014; No errata)
Last updated 2015-10-14
Replaces draft-lasserre-nvo3-framework
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Matthew Bocci
Shepherd write-up Show (last changed 2014-06-11)
IESG IESG state RFC 7365 (Informational)
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Responsible AD Alia Atlas
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IANA IANA review state Version Changed - Review Needed
IANA action state No IC
Internet Engineering Task Force (IETF)                       M. Lasserre
Request for Comments: 7365                                      F. Balus
Category: Informational                                   Alcatel-Lucent
ISSN: 2070-1721                                                 T. Morin
                                                                  Orange
                                                                N. Bitar
                                                                 Verizon
                                                              Y. Rekhter
                                                                 Juniper
                                                            October 2014

         Framework for Data Center (DC) Network Virtualization

Abstract

   This document provides a framework for Data Center (DC) Network
   Virtualization over Layer 3 (NVO3) and defines a reference model
   along with logical components required to design a solution.

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 5741.

   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/rfc7365.

Lasserre, et al.              Informational                     [Page 1]
RFC 7365         Framework for DC Network Virtualization    October 2014

Copyright Notice

   Copyright (c) 2014 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.

Lasserre, et al.              Informational                     [Page 2]
RFC 7365         Framework for DC Network Virtualization    October 2014

Table of Contents

   1. Introduction ....................................................4
      1.1. General Terminology ........................................4
      1.2. DC Network Architecture ....................................7
   2. Reference Models ................................................8
      2.1. Generic Reference Model ....................................8
      2.2. NVE Reference Model .......................................10
      2.3. NVE Service Types .........................................11
           2.3.1. L2 NVE Providing Ethernet LAN-Like Service .........11
           2.3.2. L3 NVE Providing IP/VRF-Like Service ...............11
      2.4. Operational Management Considerations .....................12
   3. Functional Components ..........................................12
      3.1. Service Virtualization Components .........................12
           3.1.1. Virtual Access Points (VAPs) .......................12
           3.1.2. Virtual Network Instance (VNI) .....................12
           3.1.3. Overlay Modules and VN Context .....................14
           3.1.4. Tunnel Overlays and Encapsulation Options ..........14
           3.1.5. Control-Plane Components ...........................14
                  3.1.5.1. Distributed vs. Centralized
                           Control Plane .............................14
                  3.1.5.2. Auto-provisioning and Service Discovery ...15
                  3.1.5.3. Address Advertisement and Tunnel Mapping ..15
                  3.1.5.4. Overlay Tunneling .........................16
      3.2. Multihoming ...............................................16
      3.3. VM Mobility ...............................................17
   4. Key Aspects of Overlay Networks ................................17
      4.1. Pros and Cons .............................................18
      4.2. Overlay Issues to Consider ................................19
           4.2.1. Data Plane vs. Control Plane Driven ................19
           4.2.2. Coordination between Data Plane and Control Plane ..19
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