Multi-domain virtual network embedding with coordinated link mapping
Multi-domain virtual network embedding with coordinated link mapping
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DOI：
10.1109/softcom.2016.7772158
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发表时间：
2016-09
期刊：
影响因子：
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通讯作者：
Shuopeng Li;M. Saidi;Ken Chen
中科院分区：
文献类型：
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作者：
Shuopeng Li;M. Saidi;Ken Chen
网络虚拟化允许在共享的物理基础设施上共存各种逻辑网络，近年来变得非常流行。虚拟资源到物理资源的最佳映射是网络虚拟化中的一个主要问题。这个被称为虚拟网络嵌入（VNE）的问题已经在一个物理域的背景下得到了很好的探讨，而这个物理域实际上是由单个基础设施提供商（InP）操作的。然而，随着虚拟网络需求的快速增长，需要跨多域建立大量的虚拟网络。对于多域虚拟网络，基础设施提供商不能再仅仅解决自己的单域虚拟网络问题，而必须合作构建整个虚拟网络。因此，与传统的单域虚拟网络相比，多域虚拟网络提出了新的挑战。现有的研究主要集中在将域内的VN分解为域内的子VN，而很少关注域内和域间（对等）链路之间的联合关系。本文提出了一种结合内部链路映射和对等链路映射的多域链路映射方法，以优化整体资源利用率。我们的方法很容易部署，因为它基于当前的Internet架构。评估表明，我们的方法带来了与现有方法相关的改进。
Network Virtualization, which allows the coexistence of various logical networks on shared physical infrastructure, has become popular in recent years. The optimal mapping of virtual resource to physical resource is a major issue in network virtualization. This problem, called virtual network embedding (VNE), has been well explored in the context of one physical domain, which is in practice operated by a single infrastructure provider (InP). However, the needs of virtual network (VN) is rapidly growing, and quite a number of VNs have to be established across multi-domain. For multi-domain VNE, infrastructure providers can no longer just solve their own single domain VNE problem, but have to cooperate to build the whole VN. Therefore, new challenge arises for the multi-domain VNE, compared to traditional single domain VNE. The existing investigations on this problem mainly focus on decomposing a VN to sub VN for each domain, but little attention has been paid to the joint relation between intra-domain and inter-domain (peering) links. In this paper, we propose a multi-domain link mapping method which combines the intra and peering link mapping so as to optimize the overall resource utilization. Our approach is easy to be deployed since it is based on current Internet architecture. Evaluation shows that our approach brings improvements related to existing methods.