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Virtualization technologies are changing the way network operators deploy and manage Internet services. In particular in this study we focus on the new Network Function Virtualization (NFV) paradigm, which consists in instantiating Virtual Network Function (VNFs) in Commercial-Off-The-Shelf (COSTS) hardware. Adopting NFV network operators can dynamically instantiate Network Functions (NFs) based on...
A cloud computing as a distributed computing emerging paradigm in which data and services are available in data centers extensible and can be accessed transparently since devices (computers, phones, clusters, ) connected via the Internet. Cloud computing solve problems of scalability and availability and insure distributed computing. This paper aims to provide an architecture for services deployed...
Network functions (e.g., firewalls, load balancers, etc.) are traditionally implemented in hardware appliances and provide services to traffic flows. Since these functions are traditionally hardware-based, they make service innovation difficult in today's scenario of rapidly-increasing and evolving service demands. Network Function Virtualization (NFV) is seen as a key enabler for service innovation...
This paper explores latency-aware and policy-aware optimized placement of virtual network functions across data centers in NFV systems. A hierarchy of distributed data centers is suggested to support network function software appliances with the flexibility to place functions based on performance requirements in the hierarchy, and different test scenarios for optimal VNF placement are studied. The...
The EU funded FP7 project T-NOVA, with the specific goal of accelerating the evolution of NFV, proposes an open architecture to provide Virtual Network Functions as a Service (VNFaaS), together with a dynamic, and flexible platform for the management of Network Services (NSs) composed by those Virtual Network Functions (VNFs). The proposed architecture allows operators to deploy distinct virtualized...
Diverse proprietary network appliances increase both the capital and operational expense of service providers, meanwhile causing problems of network ossification. Network function virtualization (NFV) is proposed to address these issues by implementing network functions as pure software on commodity and general hardware. NFV allows flexible provisioning, deployment, and centralized management of virtual...
Identity management system has gained significance for any organization today for not only storing details of its employees but securing its sensitive information and safely managing access to its resources. This system being an enterprise based application has time taking deployment process, involving many complex and error prone steps. Also being globally used, its continuous running on servers...
Taiwan has been a worldwide leader in computer hardware manufacturing for many years. Cloud computing, a major paradigm shift for the IT industry, threatens that leadership position. Cloud computing drives the value chain increasingly toward systems software and services. It has a major negative impact on the already marginal profit picture that threatens Taiwan's hardware manufacturing industry,...
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