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Problem Statement: Overlays for Network Virtualization

Document type: Replaced Internet-Draft (individual)
Document stream: IETF
Last updated: 2012-09-11 (latest revision 2012-08-10)
Intended RFC status: Unknown
Other versions: (expired, archived): plain text, pdf, html

IETF State: Call For Adoption By WG Issued
Document shepherd: No shepherd assigned

IESG State: Replaced by draft-ietf-nvo3-overlay-problem-statement
Responsible AD: (None)
Send notices to: No addresses provided

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


This document describes issues associated with providing multi- tenancy in large data center networks that require an overlay-based network virtualization approach to addressing them. A key multi- tenancy requirement is traffic isolation, so that a tenant's traffic is not visible to any other tenant. This isolation can be achieved by assigning one or more virtual networks to each tenant such that traffic within a virtual network is isolated from traffic in other virtual networks. The primary functionality required is provisioning virtual networks, associating a virtual machine's virtual network interface(s) with the appropriate virtual network, and maintaining that association as the virtual machine is activated, migrated and/or deactivated. Use of an overlay-based approach enables scalable deployment on large network infrastructures.


Thomas Narten <>
Dinesh Dutt <>
Luyuan Fang <>
Eric Gray <>
Lawrence Kreeger <>
Maria Napierala <>
Murari Sridharan <>

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid)