[ovs-discuss] Processing of BARRIER_REPLY

[Ben Pfaff]

In Open vSwitch sometimes the control connection does get processed
through the OpenFlow tables, in "in-band control" environments.

I don't know much about other OpenFlow switches, so I can't speak for
them.

On Mon, Nov 30, 2015 at 10:34:53PM +0000, André Mantas wrote:
> Thanks for the quick reply.
> 
> I imagine that "the TCP connection itself passing through the tables" is
> not a standard implementation in most OF switches, right?
> 
> Ben Pfaff <blp at ovn.org> escreveu no dia seg, 30/11/2015 às 17:23:
> 
> > On Mon, Nov 30, 2015 at 05:21:21PM +0000, André Mantas wrote:
> > > Hi. I have a doubt about how OF switches and maybe someone here can help
> > me.
> > >
> > > When a switch receives a BARRIER_REQUEST, how does it send the
> > > BARRIER_REPLY message?
> > > Is it sent directly in the TCP connection with the controller?
> >
> > Yes.
> >
> > > Or is it processed in the ingress tables?
> >
> > No (unless the TCP connection itself otherwise passes through the
> > tables).
> >
> > > The same applies to bundle messages like OFPBCT_COMMIT_REPLY, I guess.
> >
> > Same answer.
> >