OVS is a production quality multilayer virtual switch created back in 2009. It is the same as OpenDaylight; it is also provided by Linux Foundation.
Open vSwitch was created by a company called Nicira, which was later acquired by VMware and became a core part of the current VMware NSX network virtualization platform.
OVS quickly became the favorite virtual switch for virtual environments, and it is now playing a large part in other open source projects, such as OpenStack, oVirt, and Proxmox.
OVS is layer 2 switch and it supports different technologies and protocols, such as 802.1Q, BFD, NetFlow, sFlow, port mirroring, VLANs, LACP, VXLAN, GENEVE GRE Overlays, STP, and IPv6.
From a control and management perspective, Open vSwitch supports both OpenFlow and the OVSDB management protocol, which means it can operate both as a soft switch running within the hypervisor and also as the control stack for the switch silicon. You can leverage OVS on a bare metal...