Dynamic Migration of Virtual Links
Shuo Zhao, Xinsheng Ji, Guozhen Cheng, Hongchao Hu · 2017
The exposure of tenants sensitive information becomes a serious problem in the cloud computing and data center environments. Covert channel attacks are the main ways which steal private information of tenants. The existing defense approaches can defend against attacks, however there are some issues about low success ratio of VNE and low utilization of physical resources. Hence, we propose a Dynamic Migration of Virtual Links (DMVL) method. Firstly, the corresponding migration strategy of virtual links is to maximize the time interval of dynamic migration of virtual links, then remapping goal is to minimize migration cost to reduce migration cost associated with virtual links migration. Simulation experiments demonstrate that the proposed approach can satisfy the security requirement of tenants on the premise of ensuring the success ratio of virtual network embedding and the utilization of physical resources.