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I-D Action: draft-narten-nvo3-overlay-problem-statement-04.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories.
 This draft is a work item of the Network Virtualization Overlays Working Group of the IETF.

	Title           : Problem Statement: Overlays for Network Virtualization
	Author(s)       : Thomas Narten
                          David Black
                          Dinesh Dutt
                          Luyuan Fang
                          Eric Gray
                          Lawrence Kreeger
                          Maria Napierala
                          Murari Sridharan
	Filename        : draft-narten-nvo3-overlay-problem-statement-04.txt
	Pages           : 21
	Date            : 2012-08-10

   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.

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