No Break of Virtual Network during Live Migration

The current Virtual Machine (VM) live migration research mainly focuses on transferring run-time memory state of VMs, but neglects the network state. This paper designs an Efficient and Reliable VIrtual Network (ERVIN) system, which applies several techniques: Central Information management Distributed Data transmission (CIDD), layer-two network virtualization, store and replay. It guarantees that the established network connections do not interrupt during migration and minimizes the degradation time. The experiments show that ERVIN is efficient. There is no break of the virtual network during the VM´s migration. The degradation time of network performance is only around 400 ms, which can almost be neglected.