پذیرفته شده برای ارائه شفاهی ، صفحه 25-36 (12)

کد مقاله : 1098-CYSP2024 (R1)

Faculty of Electrical and Computer Engineering, Sahand University of Technology, Tabriz, Iran

The development of Software Define Networks (SDN) networks and the of Network Function Virtualization (NFV) have provided the sharing of resources for cloud service providers. Developing effective virtual network embedding (VNE) algorithms for an SDN network is crucial to improve resource utilization. However, after allocating resources to a virtual network request, most existing VNE algorithms allocate the same resources to that request until the end of execution, which causes this problem in most cases; due to the existence of disconnection in the physical network graph, even with empty resources, it is not possible to map a new request. The proposed MaVNE method in this article models the VNE as a MILP problem and while calculating the migration cost of virtual networks, it tries to address the mentioned problem. The results of evaluation and comparison of the proposed method with basic methods show the power of the proposed method in increasing the acceptance ratio of virtual networks. But the cost of migration is added to the migrated networks. Therefore, by increasing the cost, which is the cost of immigration, the acceptance ratio can be increased.

Network Embedding؛ Network virtualization؛ Linear problem؛ Migration؛ Software Define Network

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