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Providing Infrastructure Functions for Virtual Networks by Applying Node Plug-in Architecture

Kanada, Y., Procedia Computer Science, Vol. 34, pp. 661-667, 2014.
Kanada, Y., Workshop on Software Defined Networks for a New Generation of Applications and Services (SDN-NGAS 2014), August 2014, http://dx.doi.org/10.1016/j.procs.2014.07.094
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Abstract: Although nodes in a network-virtualization infrastructure, which is called a virtualization node, usually contain a switch or a router with sophisticated and high-performance functions such as Ethernet switching, VLAN, and IP routing, most of such infrastructure functions cannot be reused as program components by slices. Accordingly, a method for providing such functions to slices on a virtualization node (VNode) infrastructure, by applying the previously proposed plug-in architecture, is proposed. This architecture defines two types of plug-ins, i.e., control plug-ins and data plug-ins, and interfaces for them. As for the proposed method, the switch or router in the VNode is regarded as a data plug-in, and a control plug-in that allocates and isolates the switch/router resources was developed. The data plug-in interface was customized to handle a data plug-in, i.e., a layer-3 switch in a VNode, and a control plug-in and the interfaces for providing layer-3/VLAN switch functions to slices were designed, implemented, and evaluated. The evaluation result shows that instead of specifying a routing/switching program or method, specifying only an additional 8 to 25 lines in a slice definition enables slice developers to use routing and switching functions.

Introduction to this research theme: Network virtualization

Keywords: Network-node plug-in architecture; Network virtualization; Virtualization node; VNode; In-slice switching; In-slice routing; Deep programmability

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