The network function virtualization (NFV) initiative was launched in 2012 by the European Telecommunications Standard Institute (ETSI) and group of telecom companies and IT vendors to serve the network operators in de...
详细信息
As the users on the cloud network increase, the consumption of the Compute, network and Storage resources also increases. This leads to increase in the cost of deployment, configuration and maintenance. Hence, the Cap...
详细信息
ISBN:
(纸本)9781509015603
As the users on the cloud network increase, the consumption of the Compute, network and Storage resources also increases. This leads to increase in the cost of deployment, configuration and maintenance. Hence, the Capital Expenditure (CAPEX) of the organization providing the cloud network increases. network function virtualization (NFV) is a technology which virtualizes networkfunctionalities. This paper studies the influence of NFV on CAPEX of cloud based networks and compares it with traditional implementation (without NFV) of such networks. A prototype cloud network based on NFV implementation is developed and implemented. Based on the test cases developed on the prototype, CAPEX of the resources used for both NFV based and traditional implementations are studied and analyzed. RESTful web services are created for the users of the cloud network to orchestrate and manage the network on the cloud. The results accomplished show that NFV based implementation reduces the CAPEX, when compared with the traditional implementation. It is also observed that orchestration mechanism reduces complexity of management of cloud network. A use case with simple web server is developed to compare the performance of a system on Cloud with that of a physical system.
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 ...
详细信息
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.
network function virtualization (NFV) is designed to reduce high cost of the hardware deployment and maintenance, which will be of great importance in the future resource management. NFV makes it possible for general ...
详细信息
Dynamic and elastic resource allocation to Virtual networkfunctions (VNFs) in accordance with varying workloads is a must for realizing promised reductions in capital and operational expenses in networkfunctions Vir...
详细信息
network service providers have to cope with the growing on-demand need from end-users as well as the diversity of usage. The softwerization and cloudification of the network components offer an interesting solution to...
详细信息
network function virtualization (NFV) aims at bringing the benefits of virtualization to network middleboxes (routers, firewalls, Intrusion Detection Systems,..). In the last few years the NFV use-case, initially hamp...
详细信息
As a new network architecture and key technology of 5G, network function virtualization (NFV) is paid special attention in both industry and academia. In the context of NFV, Virtualized networkfunctions (VNFs) locate...
详细信息
In this paper we are presenting Service function Chaining for network services in a virtualised environment. This kind of problem does not still have a commonly used solution. We have tested our design;explained in de...
详细信息
ISBN:
(纸本)9781450348614
In this paper we are presenting Service function Chaining for network services in a virtualised environment. This kind of problem does not still have a commonly used solution. We have tested our design;explained in detail the issues of the currently used technologies;discussed the current custom solutions and the ITEF in-the-works;and shown our Proof of Concept. For this, we have recreated in our lab a virtual environment that includes different Virtual networkfunctions and a Service Classifier, and we have monitored the traffic on the virtual network and on the Virtual networkfunctions to make sure that all packets followed the correct path. The results of the test show that the solution is working and functional.
In recent years, cloud and virtualization technologies have received a lot of attention among network equipment vendors and service providers. Due to the flexibility and significant economic potential of these technol...
详细信息
暂无评论