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VXLAN: A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks
draft-mahalingam-dutt-dcops-vxlan-09

Internet Engineering Task Force                           M. Mahalingam 
Internet Draft                                                Storvisor 
Intended Status: Informational                                  D. Dutt 
Expires: October 10, 2014                              Cumulus Networks 
                                                                K. Duda 
                                                                 Arista 
                                                             P. Agarwal  
                                                               Broadcom 
                                                             L. Kreeger 
                                                                  Cisco 
                                                             T. Sridhar 
                                                                 VMware 
                                                             M. Bursell 
                                                                 Citrix 
                                                              C. Wright 
                                                                Red Hat 
                                                         April 10, 2014 
                                                                        
                                                                  
 
                                      
    VXLAN: A Framework for Overlaying Virtualized Layer 2 Networks over 
                             Layer 3 Networks 
                 draft-mahalingam-dutt-dcops-vxlan-09.txt 

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), its areas, and its working groups.  Note that 
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   Drafts. 

   Internet-Drafts are draft documents valid for a maximum of six 
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   The list of Internet-Draft Shadow Directories can be accessed at 
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   This Internet-Draft will expire on October 10, 2014. 

 
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Internet-Draft                  VXLAN                        April 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.  

Abstract 

  This document describes Virtual eXtensible Local Area Network 
  (VXLAN), which is used to address the need for overlay networks 
  within virtualized data centers accommodating multiple tenants. The 
  scheme and the related protocols can be used in cloud service 
  provider and enterprise data center networks. This memo documents the 
  deployed VXLAN protocol for the benefit of the IETF community.  

    

Table of Contents 

    
   1. Introduction...................................................3 
      1.1. Acronyms & Definitions....................................4 
   2. Conventions used in this document..............................5 
   3. VXLAN Problem Statement........................................5 
      3.1. Limitations imposed by Spanning Tree & VLAN Ranges........5 
      3.2. Multitenant Environments..................................6 
      3.3. Inadequate Table Sizes at ToR Switch......................6 
   4. Virtual eXtensible Local Area Network (VXLAN)..................7 
      4.1. Unicast VM to VM communication............................8 
      4.2. Broadcast Communication and Mapping to Multicast..........9 
      4.3. Physical Infrastructure Requirements.....................10 
   5. VXLAN Frame Format............................................10 
   6. VXLAN Deployment Scenarios....................................16 
      6.1. Inner VLAN Tag Handling..................................19 
   7. Security Considerations.......................................19 
   8. IANA Considerations...........................................21 
   9. References....................................................21 

 
 
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