ovs-vsctl add-br

To create a new bridge, use the ovs-vsctl add-br command. The new bridge initially has no ports, other than the bridge itself.

ovs-vsctl [options] [--may-exist] add-br bridge

options	See the output of ovs-vsctl --help command, also reproduced ovs−vsctl Commands.
--may-exist	Without the --may-exist option, attempting to create bridge that already exists creates an error. With the --may-exist option, the command does nothing if the bridge already exists as a real bridge.
bridge	Arbitrary bridge name.

The following example creates a new bridge named br0:

admin@Switch$ovs-vsctl --may-exist add-br br0