Embedding Virtual Networks in Flexible Optical Networks with Sliceable Transponders
Embedding Virtual Networks in Flexible Optical Networks with Sliceable Transponders
复制标题
DOI：
10.1007/978-3-030-38085-4_3
复制
发表时间：
2019-05
期刊：
影响因子：
--
通讯作者：
Juzi Zhao;S. Subramaniam
中科院分区：
文献类型：
--
作者：
Juzi Zhao;S. Subramaniam
涉及在多个数据中心传输、处理和分析数据的新兴数据中心间应用，例如虚拟机迁移、实时数据备份、远程桌面和虚拟数据中心，可以建模为共享公共底层物理数据中心间网络的计算和频谱资源的虚拟网络请求。最近的进展使灵活的光网络成为满足数据中心之间动态和异构连接需求的理想选择。在本文中，我们解决了配备可切片带宽可变转发器（SBVT）的灵活光网络中虚拟网络嵌入问题的静态（离线）版本。目标是最大限度地减少网络中所需 SBVT 的总数。提出了整数线性规划（ILP）公式，导出了下界，并提出并比较了四种启发式方法。仿真结果显示了所提出方法的有效性。
Emerging inter-datacenter applications involving data transferred, processed, and analyzed at multiple data centers, such as virtual machine migrations, real-time data backup, remote desktop, and virtual data centers, can be modeled as virtual network requests that share computing and spectrum resources of a common substrate physical inter-datacenter network. Recent advances make flexible optical networks an ideal candidate for meeting the dynamic and heterogeneous connection demands between datacenters. In this paper, we address the static (offline) version of the virtual network embedding problem in flexible optical networks equipped with sliceable bandwidth variable transponders (SBVTs). The objective is to minimize the total number of required SBVTs in the network. An Integer Linear Programming (ILP) formulation is presented, lower bounds are derived, and four heuristics are proposed and compared. Simulation results are presented to show the effectiveness of the proposed approaches.