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Secure virtual network embedding with flexible bandwidth-based revenue maximization

机译:安全的虚拟网络嵌入,基于带宽的灵活收入最大化

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摘要

Network virtualization is an effective way to overcome the ossification of Internet by enabling multiple virtual networks to coexist on a shared infrastructure. Virtual network embedding is a resource allocation problem concerned with the assignment of physical resources to the virtual networks. Several security issues about virtual network embedding are hitherto unexplored. For instance, some virtual network operators may distrust each other and require that their virtual infrastructure is not cohosted on the same physical equipment. In this paper, we address this problem by proposing a virtual network embedding problem that ensures that the virtual networks of conflicting operators are mapped to different physical equipments. Furthermore, our problem formulation enables the virtual links to select among a range of discrete bandwidth values, each with a corresponding price and thereby realizing any possible revenue function. We evaluate the performance of our heuristic algorithm by comparison with the results obtained from our integer linear programming formulation using optimization software CPLEX. (C) 2017 Elsevier B.V. All rights reserved.
机译:网络虚拟化是通过使多个虚拟网络共存于共享基础架构上而克服Internet僵化的有效方法。虚拟网络嵌入是与将物理资源分配给虚拟网络有关的资源分配问题。迄今为止,尚未探讨有关虚拟网络嵌入的几个安全问题。例如,某些虚拟网络运营商可能彼此不信任,并要求其虚拟基础架构不能共托管在同一物理设备上。在本文中,我们通过提出一个虚拟网络嵌入问题来解决此问题,该问题可确保冲突运营商的虚拟网络被映射到不同的物理设备。此外,我们的问题公式使虚拟链接能够在一系列离散的带宽值中进行选择,每个带宽值具有相应的价格,从而实现任何可能的收益函数。通过与使用优化软件CPLEX从整数线性规划公式中获得的结果进行比较,我们评估了启发式算法的性能。 (C)2017 Elsevier B.V.保留所有权利。

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