摘要
传统IP网络架构越来越不适应日益增长的网络业务与应用,一种新型的网络架构应运而生,即软件定义网络。它实现数据面和控制面相分离,同时具有集中控制、开放接口、可编程等特性。研究了基于该网络架构的虚拟网络映射问题,即如何将带有约束条件的虚拟网络请求映射到由传统电信商提供的底层物理网络中。首先给出虚拟网络映射问题的定义及目标,然后对现有的多种经典映射算法进行分类,并同时对比与分析,最后在此基础上对未来虚拟网络映射算法提出一些建议与改进思路。
Traditional IP network architecture is not adaptive to the increasing number of network services and applications,and then a new type of network architecture is introduced,which is software defined network. It enables data plane and control plane to separate,and has central control,open interfaces,and programmable features. This paper studies the virtual network embedding problem based on the network architecture,that is,how to map virtual network requests with constraints to the underlying physical network provided by traditional telecommunication operators. Firstly,the definition and goal of the virtual network embedding problem are given. Then,a variety of classical mapping algorithms are classified and compared with each other. Finally,the future virtual network embedding algorithms＇ suggestions and improvements are offered.
出处
《微型机与应用》
2017年第22期11-14,共4页
Microcomputer & Its Applications
关键词
软件定义网络
虚拟网络映射
网络虚拟化
映射算法
software defined network
virtual network embedding
network virtualization
mapping algorithm
