Selfish Virtual Machine Live Migration Causes Network Instability

Virtual machine live migration, which migrates a virtual machine between data centers, is studied as a way to improve quality of services hosted on clouds. Meanwhile, traffic engineering is performed in networks that connect geographically-dispersed data centers. Since virtual machine live migration and traffic engineering are performed simultaneously with different objectives, the coexistence of these two operations may result in the instability of network state due to the interference between their control objectives. In this paper, we investigate that the coexistence of virtual machine live migration and traffic engineering causes the network instability through simulation experiments. To overcome this instability, we apply hysteresis to traffic engineering and show that our approach suppresses the network instability.

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