Network performance is important requirement to achieve Network Function Virtualization (NFV). Open vSwitch and Linux bridge are able to be selected as OSS virtual switch on hypervisor in OpenStack taken notice as the NFV infrastructure manager. However, it's difficult that these software switches fulfill network performance of NFV requirement. Some techniques are proposed to improve the network performance. DPDK is one of the techniques. This presentation will give an overview of high performance software switch Lagopus with DPDK, an introduction how to control Lagopus with an infrastructure manager and integration OpenStack.