http://redhatstackblog.redhat.com/2016/02/10/boosting-the-nfv-datapath-with-rhel-openstack-platform/ NFV keywords for Linux networking Linux , QEMU , KVM , Open vSwitch , DPDK , libvirt , OpenStack Direct hardware access : done by the NIC hardware and is not visible to the Compute layer. firewall filtering (OpenStack security-groups) or live migration are currently not available when using SR-IOV Using a virtual switch Standard OVS is built out of three main components: ovs-vswitchd – a user-space daemon that implements the switch logic kernel module (fast path) – that processes received frames based on a lookup table ovsdb-server – a database server that ovs-vswitchd queries to obtain its configuration. External clients can talk to ovsdb-server using OVSDB protocol The Data Plane Development Kit (DPDK) consists of a set of libraries and drivers for fast packet processing. It is designed to run mostly in user-space One of the key concepts of DPDK, c