Patent ID: 8189458

Claim:
A monitoring system comprising: a monitored device to operate virtual computers on a real computer, said monitored device including an initial information notification unit to transmit initial information having device identification information of the real computer and a real MAC address of the real computer, a determination unit to determine a virtual MAC address of each of the real and virtual computers on the basis of the real MAC address of the real computer and an IP address of each of the real and virtual computers, and a failure information notification unit to transmit failure information having the virtual MAC address of a failured one of the real and virtual computers and the IP address of the failured one of the real and virtual computers upon the one of the real and virtual computers failure occurring; and a monitoring device to monitor a failure state of the monitored device, said monitoring device including a storage unit to store the initial information received from the monitored device, an obtaining unit to obtain the real MAC address of the real computer on the basis of the IP address and the virtual MAC address in the failure information received from the monitored device, a group processing unit to group the failure information on the basis of the obtained real MAC address, and to correlate the grouped failure information with the device identification information in the initial information, and an output unit to output the failure information correlated with the device identification information.