virtualization is a fast-growing technology that is being widely adopted to help improve network and datacenter resource manageability and usage optimization. However, given increasing deployments, new challenges are ...
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virtualization is a fast-growing technology that is being widely adopted to help improve network and datacenter resource manageability and usage optimization. However, given increasing deployments, new challenges are starting to arise, e.g., such as management complexity. Hence in order to deliver a higher degree of service provisioning flexibility, two key technologies have attracted attention, namely network function virtualization (NFV) and software defined networking (SDN). The former enables the implementation of networkfunctions (NFs) via top-of-the-shelf commodity servers in datacenters. The latter decouples the data and control planes, centralizing flow rules definitions in a controller system to facilitate management and routing. Although recent NFV studies have focused on minimizing resource usage to satisfy a set of requested NFs, they do not consider scenarios with limited resources. Hence this paper presents an optimization-based solution for the joint routing and placement of virtual NFs. In particular, the scheme tries to maximize the number of satisfied requests as well as well minimize routing and deployment costs. The model also introduces weighting factors to allow operators to select cost preferences. However findings indicate that the proposed optimization solution can only be solved for smaller networks. Hence a more scalable greedy heuristic scheme is also developed.
The paper proposes and investigates the problem of the reconfiguration of cloud and bandwidth resources in Multi-Provider network function virtualization architectures where the Cloud Infrastructures (CI) are managed ...
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An overlay network function virtualization framework that utilizes dynamic optical substrate as the underlay network is demonstrated via field networks. On-demand bandwidth provisioning is allowed by the combination o...
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network function virtualization (NFV) achieves the goal of decoupling networkfunctions from dedicated hardware devices by software techniques, which improves the agility and scalability of network services thus reduc...
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This project has been proposed from my teacher in order to provide a really state of the art solution in the fields of Telecommunications. We studied about network function virtualization and we found that a part of t...
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This project has been proposed from my teacher in order to provide a really state of the art solution in the fields of Telecommunications. We studied about network function virtualization and we found that a part of the Resource Allocation (many have involved in this subject) can be tackled with an algorithm that was first invented to solve graphical problems (such as the Travel Salesman Problem [TSP]) the Ant Colony Optimization. We have analyzed one of the three phases of the Resource Allocation, and we have decided to tackle the second one. To be more precise, this part takes for granted the other two phases, and it tries to find which combination between links and nodes is the best according to the cost function that someone defines. Our scope was to set as cost functions theminimizationofthe delay. The results of this project are more than desirable. This is because we have used a metaheuristic algorithm that can find about 90% of the optimal solution without searching the hole environment.
This talk will discuss the challenges of steering large flows across multiple virtualized networkfunctions in data centers, and introduce a novel architecture to steer flows in both optical and packet domains for hig...
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In this paper we introduce the Generalized Virtual networking (GVN) concept. GVN provides a framework to influence the routing of packets based on service level information that is carried in the packets. It is based ...
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In order to fulfill the multicast task with a service function chain (SFC) requirement and effectively utilize network bandwidth and resources, a low-cost NFV multicast optimization strategy based on Dijkstra’s algor...
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With the exponential growth of the Internet use, the impact of cyber attacks are growing rapidly. Distributed Denial of Service (DDoS) attacks are the most common but damaging type of cyber attacks. Among them SYN Flo...
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network function virtualization (NFV) is a new networking paradigm, enabling network innovation through virtualization of traditional hardware-based networkfunctions in the form of virtual networkfunctions. NFV is u...
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