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A Verification Based Flow Space Management Scheme for Multi-Tenant Virtualized Network

Authors:
Shun Higuchi
Toshio Hirotsu

Keywords: OpenFlow; Virtualization; Multi-tenant Network.

Abstract:
Cloud services that virtualize existing IT infrastructures at data centers are widely used by governments, universities, and companies. Multi-tenancy is required for data centers to provide a large number of isolated networks to each organization. OpenFlow is a core technology of software defined networking (SDN) and is useful for centrally managing and controlling these networks; however, SDN is used only at the management level. It is desirable to make the flexible features of SDN/OpenFlow available to users’ virtual networks. FlowVisor virtualizes multi-tenant OpenFlow networks by coordinating multiple controllers, but it is unable to deal with conflicts of control rules among individual virtual networks. Administrators of each tenant thus need to design the control rules of their networks carefully. This paper describes a verification-based scheme for coordinating multiple tenants’ OpenFlow networks. The scheme enables administrators to design each tenant network without having to worry about conflicts with other tenants. It ensures isolation of virtual networks among multiple tenants transparently. It manages the address space overlaps and resolves conflicts in the flow entries.

Pages: 24 to 29

Copyright: Copyright (c) IARIA, 2017

Publication date: March 19, 2017

Published in: conference

ISSN: 2308-3956

ISBN: 978-1-61208-537-1

Location: Nice, France

Dates: from March 19, 2017 to March 23, 2017