Framework for DC Network Virtualization
draft-ietf-nvo3-framework-08

The information below is for an old version of the document
Document Type Active Internet-Draft (nvo3 WG)
Last updated 2014-07-02
Replaces draft-lasserre-nvo3-framework
Stream IETF
Intended RFC status Informational
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Responsible AD Alia Atlas
Send notices to nvo3-chairs@tools.ietf.org, draft-ietf-nvo3-framework@tools.ietf.org
IANA IANA review state Version Changed - Review Needed
Internet Engineering Task Force                          Marc Lasserre
Internet Draft                                            Florin Balus
Intended status: Informational                          Alcatel-Lucent
Expires: Jan 2015
                                                          Thomas Morin
                                                 France Telecom Orange

                                                           Nabil Bitar
                                                               Verizon

                                                         Yakov Rekhter
                                                               Juniper

                                                          July 2, 2014

                  Framework for DC Network Virtualization
                     draft-ietf-nvo3-framework-08.txt

Abstract

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

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts. The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six
   months and may be updated, replaced, or obsoleted by other documents
   at any time.  It is inappropriate to use Internet-Drafts as
   reference material or to cite them other than as "work in progress."

   This Internet-Draft will expire on Jan 2, 2015.

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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.

Table of Contents

   1. Introduction..................................................3
      1.1. General terminology......................................3
      1.2. DC network architecture..................................6
   2. Reference Models..............................................8
      2.1. Generic Reference Model..................................8
      2.2. NVE Reference Model.....................................10
      2.3. NVE Service Types.......................................10
         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...................11
   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.....................12
         3.1.4. Tunnel Overlays and Encapsulation options..........13
         3.1.5. Control Plane Components...........................14
         3.1.5.1. Distributed vs Centralized Control Plane.........14
         3.1.5.2. Auto-provisioning/Service discovery..............14
         3.1.5.3. Address advertisement and tunnel mapping.........15
         3.1.5.4. Overlay Tunneling................................15
      3.2. Multi-homing............................................16
      3.3. VM Mobility.............................................17
   4. Key aspects of overlay networks..............................17
      4.1. Pros & Cons.............................................17
      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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         4.2.3. Handling Broadcast, Unknown Unicast and Multicast (BUM)
         traffic..................................................19
         4.2.4. Path MTU..........................................20
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