[ovs-discuss] OFPMT_TABLE_FEATURES is supported in OVS or not

[Ben Pfaff]

Your question makes no sense, because OpenFlow 1.1 and 1.2 had
multiple tables (in the sense that you mean) but did not have
OFPMP_TABLE_FEATURES.  Are you saying that these two versions of
OpenFlow were useless?  If you are, please explain.  If you are not,
then please consult their specifications for information on how to
figure out the number of tables and their properties.

On Tue, Mar 10, 2015 at 10:52:42PM +0530, tech_kals Kals wrote:
> Hi Ben,
> 
>   Thanks for your support.
> 
>  I was asking about how OVS uses multiple flow table when it is not capable
> of informing controller about it has support for multiple flow tables
> through OFPMP_TABLE_FEATURES?
> 
> Since OVS doesnt support OFPMP_TABLE_FEATURES then obviously controller may
> not be knowing the switch has multiple flow tables. So, switch would assume
> OVS has a single table. In this case, how OVS uses multiple flow tables to
> map a flow entry which has been received from controller?
> 
> 
> Meanwhile, *Is there an anticipated date on when OVS 2.4 will be available?
> *
> 
> 
> Thanks,
> Kals.
> 
> On Mon, Mar 9, 2015 at 9:39 PM, Ben Pfaff <blp at nicira.com> wrote:
> 
> > OpenFlow 1.1 and later support the kind of multiple tables you care
> > about.  Only OpenFlow 1.3 added OFPMP_TABLE_FEATURES.  You can consult
> > the OpenFlow specifications to learn about how OpenFlow works.
> >
> > On Mon, Mar 09, 2015 at 09:41:08AM +0530, tech_kals Kals wrote:
> > > Hi Ben,
> > >
> > > Thanks for your response. Even though OVS 1.3 or later is supporting
> > > multiple flow tables. May I know what is the use of them if controller is
> > > not informed about multiple flow tables through OFPMT_TABLE_FEATURES. Or
> > do
> > > you use some other mechanism to inform the controller about supporting
> > > multiple flow tables on the switch?
> > >
> > >
> > > Thanks,
> > > Kaliyaperumal K
> > >
> > >
> > > On Sat, Mar 7, 2015 at 1:06 PM, Ben Pfaff <blp at nicira.com> wrote:
> > >
> > > > Only OVS 2.4 supports OFPMT_TABLE_FEATURES.
> > > >
> > > > OVS 1.3 and later support multiple flow tables.
> > > >
> > > > On Sat, Mar 07, 2015 at 08:00:44AM +0530, tech_kals Kals wrote:
> > > > >  In your previous reply to this thread, you had mentioned that OVS
> > 2.4
> > > > only
> > > > > will support multiple flow tables. Now, you mention that it is
> > supported
> > > > in
> > > > > OVS1.3 onwards.  I see, OFPMT_TABLE_FEATURES is not supported in OVS
> > > > 2.1.0.
> > > > > Do you mean, it is supported in 1.3? If it is supported in 1.3
> > release,
> > > > > then obviously it should be supported in 2.1.0 as well... but, not
> > sure
> > > > how
> > > > > it is missed ?
> > > > >
> > > > > I am little bit confused. Could you please clarify me regarding
> > this.?
> > > > >
> > > > > On Sat, Mar 7, 2015 at 2:43 AM, Ben Pfaff <blp at nicira.com> wrote:
> > > > >
> > > > > > On Fri, Mar 06, 2015 at 10:18:29PM +0530, tech_kals Kals wrote:
> > > > > > > Thanks for your reply. I am planning to use OVS to inform the
> > > > controller
> > > > > > > about multiple flow support. Since any of the OVS versions are
> > not
> > > > > > > supporting Multiple flow tables support, could you please
> > clarify my
> > > > > > > doubts. Also, want to know if you share the details how OVS is
> > going
> > > > to
> > > > > > > support multiple flow tables then it would be great for me to do
> > my
> > > > > > > design/coding.
> > > > > >
> > > > > > This question is bizarre.  Open vSwitch has supported multiple flow
> > > > > > tables since 2011, in OVS version 1.3.
> > > > > >
> > > >
> >