Network Function Virtualization (NFV) is an emerging technology that uses software virtualization techniques to implement network functions that are usually deployed on specific hardware and software devices. With NFV it is possible to design, deploy, and manage network functions in a fraction of the time it often takes to do the same in non-virtualized settings. NFV improves the flexibility and reduces the time for the development, deployment and management of new functions. In this paper, we propose NFV-FD: a NFV to detect process and link failures. NFV-FD relies on an OpenFlow controller from which information about the network is obtained. With this information NFV-FD keeps track of the state of both processes and links. NFV-FD was implemented and experimental results are reported for the amount of resources required by the virtual function, as well as the quality of the failure detection and notification service.
网络功能虚拟化(Network Function Virtualization, NFV)是一种新兴技术，它利用软件虚拟化技术来实现通常部署在特定硬件和软件设备上的网络功能。有了NFV，设计、部署和管理网络功能所花费的时间比在非虚拟化环境中所花费的时间要少得多。NFV提高了灵活性，减少了新功能的开发、部署和管理时间。在本文中，我们提出NFV- fd:一种NFV来检测进程和链路故障。NFV-FD依赖于OpenFlow控制器，从中获取有关网络的信息。通过这些信息，NFV-FD可以跟踪进程和链路的状态。实现了NFV-FD，并报告了虚拟功能所需的资源量以及故障检测和通知服务的质量的实验结果。
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