A new Request for Comments is now available in online RFC libraries. RFC 7364 Title: Problem Statement: Overlays for Network Virtualization Author: T. Narten, Ed., E. Gray, Ed., D. Black, L. Fang, L. Kreeger, M. Napierala Status: Informational Stream: IETF Date: October 2014 Mailbox: narten@us.ibm.com, Eric.Gray@Ericsson.com, david.black@emc.com, lufang@microsoft.com, kreeger@cisco.com, mnapierala@att.com Pages: 23 Characters: 57831 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-nvo3-overlay-problem-statement-04.txt URL: https://www.rfc-editor.org/rfc/rfc7364.txt This document describes issues associated with providing multi-tenancy in large data center networks and how these issues may be addressed using an overlay-based network virtualization approach. A key multi-tenancy requirement is traffic isolation so that one tenant's traffic is not visible to any other tenant. Another requirement is address space isolation so that different tenants can use the same address space within different virtual networks. Traffic and address space isolation is achieved by assigning one or more virtual networks to each tenant, where traffic within a virtual network can only cross into another virtual network in a controlled fashion (e.g., via a configured router and/or a security gateway). Additional functionality is required to provision virtual networks, associating a virtual machine's 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. This document is a product of the Network Virtualization Overlays Working Group of the IETF. INFORMATIONAL: This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/rfc.html Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC