DYNAMICALLY PRIORITIZED VIRTUAL-NETWORK MONITORING ACCORDING TO LIFECYCLE OF VIRTUAL MACHINES IN LARGE SCALE DATA CENTER

We propose a life cycle-based dynamic virtual network monitoring system that focuses on the varying failure rate in the life cycle of the VM and selects the target device for dynamic and continuous network monitoring. When using a combination of server monitoring with ping and network connection check with Ethernet OAM, the system sets higher priorities to the port connected to a long running server, and the port within a certain time after the connection change or virtual machine addition is set. The system then selects the ports from the higher priority port to be monitored by Ethernet OAM. As a result of the evaluation by the simulation, by dynamically selecting the port to be monitored for Ethernet OAM using the proposed method, it was confirmed that the average locating time of the VM failure is reduced by 2.2% compared to the conventional method. In the data center for cloud services running many VMs, it is possible to shorten the recovery from VM failure while suppressing the number of objects monitored by Ethernet OAM by using this method.