通过使用基于软件的网络虚拟化改进网络虚拟化中的资源管理（CS NI）---刘持诚

网络虚拟化是在一个共享的基板上同时运行多个异构架构的一种方式。网络虚拟化中的主要问题是将虚拟网络映射到基底层网络。如何在映射阶段对基底资源进行管理，将对提高基础架构资源的利用率带来有效的作用。在网络虚拟化中使用基于软件的网络作为一种新的技术，将控制逻辑与数据分离，在这种情况下，基于软件的网络方法实现了高效的资源管理。本文提出了一种基于软件网络的网络虚拟化方法，对基础设施资源进行高效管理。它通过对基础设施资源的动态资源管理，优化了映射功能。我们在控制器中加入了一个模块，对资源进行动态管理。对于到达的新请求，我们会根据成功的请求数量和到达的时隙进行初步的映射。在到达 n 个请求之前，在交换机中写入规则，它们不会被最终确定。如果在 n 个时间窗口中需要进行一些重映射，可以由控制器进行重映射，并将最终结果发送到交换机中写入流规则。采用 NS2 模拟器进行了仿真，根据不同的评价标准如接受率、平均链路利用率、成本和时延等进行了仿真。

原文题目：Improving Resources Management in Network Virtualization by Utilizing a Software-Based Network

原文：Network virtualization is a way to simultaneously run multiple heterogeneous architectures on a shared substrate. The main issue in network virtualization is mapping virtual networks to substrate network. How to manage substrate resources in mapping phase will have an effective role in improving the use of infrastructure resources. Using software-based networks in network virtualization which separates control logic from data as a new technology, has led to efficient resource management in this context. In this article a software-based network approach has been presented to network virtualization and manage infrastructure resources efficiently. It optimizes mapping function by dynamic resource management of infrastructure resource. We have added a module in the controller to manage the resources dynamically. An initial mapping will be done for arriving new requests based on number of successful requests and arriving time slots. They will not be finalized by writing the rules in the switches before arriving n requests. If some remapping during the n time window is needed, remapping can be done by the controller and the final results are sent to the switches to write the flow rules. The simulation has been done using NS2 simulator showed based on different evaluation criteria such as acceptance rate, average link utilization, cost and delay.

原文作者：Amir Javadpour

原文地址：https://arxiv.org/abs/2004.09193