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Cloud bursting temporarily expands the capacity of cloud-based service hosted in a private data center by renting public data center capacity when the demand for capacity spikes. This paper presents a cloud bursting approach based on long- and short-term predictions of requests to a business-critical web system to determine the optimal resources of the system deployed over private and public data...
Software Defined Network (SDN) and Network Function Virtualization (NFV) are effective techniques to deal with dynamically changing network environments. Furthermore, the combination of SDN and NFV permits telecommunication service providers to offer sequences of virtualized network functions to their users through Service Function Chaining (SFC). In the context of SFC, the Virtual Network Function...
SDI (Software Defined Infrastructure) provides virtualized infrastructures to customers by slicing computing resources and network resources. One of the important problems for deploying SDI framework is to control the assignment of physical resources to a virtual network against changes of traffic demand and service demand. For this problem, VNE (Virtual Network Embedding) problem that maps a virtual...
In a multitenant data center, nodes and links of tenants' virtual networks (VNs) share a single component of the physical substrate network (SN). A failure of the single SN component can thereby cause simultaneous failures of multiple nodes and links in a VN, this complex of failures must significantly disrupt the services offered on the VN. In the present paper, we clarify how the fault tolerance...
In this paper, we propose a method for increasing the capacity of Machine-To-Machine (M2M) communication in mobile core networks. The proposed method combines two approaches: bearer aggregation inside mobile core networks for decreasing the load of Evolved Packet Core (EPC) nodes, and applying a Software Defined Networking (SDN) architecture to separate the control and data planes and aggregate control...
Future network should flexibly deal with unexpected network changes caused by the diversification of the network services. In this paper, we propose a managed self-organizing network concept and a dynamic resource allocation mechanism, called as DRAMS. In the managed self-organizing network, multiple virtual networks are accommodated on a single physical network and controlled autonomically based...
We propose the managed self-organizing network concept considering the unexpected network changes caused by the future applications, and implement the control and visualization system for it. In the managed self-organizing network, multiple virtual networks are accommodated on a single optical infrastructure. Each virtual network is controlled based on self-organizing mechanism by attractor selection...
Wavelength Division Multiplexing (WDM) technology multiplexes optical signals that take different wavelengths into the optical fiber, and offers a high bandwidth transmission. As an application of the WDM technology to the Internet, several network architectures have been discussed; packet-based architecture such as IP over WDM and path-based architecture that establishes a lightpath between nodes...
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