Network Working Group M.Mahalingam
Internet Draft VMware
Intended Status: Experimental D.Dutt
Expires: August 2012 K.Duda
Arista
P.Agarwal
Broadcom
L. Kreeger
Cisco
T. Sridhar
VMware
M.Bursell
Citrix
C.Wright
Red Hat
February 24, 2012
VXLAN: A Framework for Overlaying Virtualized Layer 2 Networks over
Layer 3 Networks
draft-mahalingam-dutt-dcops-vxlan-01.txt
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Mahalingam, Dutt et al. Expires August 2012 [Page 1]
Internet-Draft VXLAN February 2012
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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.
Table of Contents
1. Introduction...................................................3
1.1. Acronyms & Definitions....................................3
2. Conventions used in this document..............................4
3. VXLAN Problem Statement........................................5
3.1. Limitations imposed by Spanning Tree & VLAN Ranges........5
3.2. Multitenant Environments..................................5
3.3. Inadequate Table Sizes at ToR Switch......................6
4. Virtual eXtensible Local Area Network (VXLAN)..................6
4.1. Unicast VM to VM communication............................7
4.2. Broadcast Communication and Mapping to Multicast..........8
4.3. Physical Infrastructure Requirements......................9
5. VXLAN Frame Format.............................................9
6. VXLAN Deployment Scenarios....................................12
6.1. Inner VLAN Tag Handling..................................16
7. Security Considerations.......................................16
8. IANA Considerations...........................................17
9. Conclusion....................................................18
10. References...................................................18
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