Resource optimization method, IP network system and resource optimization program

An IP network system comprising:

• a memory containing program instructions;
• and
• a processor configured to execute the program instructions to:
• estimate an amount of generated traffic that is anticipated to be generated, based on a number of subscribers to be processed by a virtual machine,
• select, when the estimated amount of generated traffic exceeds an optimum value predetermined as throughput of physical hardware on which the virtual machine operates, an optimum physical hardware that has a margin for processing the amount of generated traffic,
• instruct the virtual machine to live-migrate to the selected physical hardware,
• compare a result obtained by monitoring actual traffic with the amount of generated traffic estimated based on the number of subscribers, and
• perform, when there is caused a wide gap that is greater than or equal to a predetermined threshold between the result and the amount of generated traffic, a notification to a maintainer to prompt a review of settings on the amount of generated traffic estimated based on the number of subscribers, and
• wherein the instructions are configured to instruct the virtual machine to perform a live migration to the optimum physical hardware.