[ovs-discuss] OpenVswitch controller configuration not needed

[Ben Pfaff]

On Thu, Mar 19, 2015 at 11:12:57AM -0300, Flavio Leitner wrote:
> On Thu, 19 Mar 2015 09:53:25 +0530
> Prashant Singh <prashant.ietedelhi at gmail.com> wrote:
> > I am beginner. I am trying to create virtual switch. After creating
> > the virtual switch
> > I think we need to set the controller and start it, but I am able to
> > ping the nodes without setting the controller and starting it. Can
> > any tell me what is the default behavior of the OpenV Switch.
> 
> No, you don't need a controller.  By default OVS comes with a
> flow that uses NORMAL action which means subjects the packet to
> the device's normal L2/L3 processing.

It's too bad we don't have good documentation on exactly how that works,
though.  I've been meaning for years to write up a sort of block diagram
of NORMAL processing.