Tunnels between virtual machines

摘要

A program causes a computer to execute a process including: receiving a command to connect first and second VMs through an L2 tunnel corresponding to particular QoS; instructing a first physical machine on which the first VM is running and which is connected to a plurality of physical networks through a first physical network interface device to use a first and second addresses in encapsulating in a first L3 packet a first L2 frame that the first VM decides to send to the second VM; and instructing the second physical machine, mutatis mutandis. Each physical network supports one or more levels in QoS. The first and second addresses correspond to a particular physical network that supports the particular QoS. The first address is one of addresses assigned to the first physical network interface device. The second address is one of addresses assigned to the second physical network interface device.