$ sudo apt-get update
$ sudo apt-get install openvswitch-switch 

openvswitch-switch is installed in your system.

Make ensure the openvswitch-switch package were installed using the commands given below,

$ sudo dpkg-query -l | grep openvswitch-switch *

You will get with openvswitch-switch package name, version, architecture and description in a table

openvswitch-switch package basic information: