This is good information to have. Thanks Tony and Stephen. I didn't know that Open Switch used anything from OVS other than ovsdb-server. Maybe I'll have a look sometime.
On Tue, Mar 21, 2017 at 12:21:37PM +1300, Tony van der Peet wrote: > We use a dpif implementation (based very much on dpif-netdev) but have > also strongly considered writing our own ofproto. So I would agree > that keeping the ofproto layer would be a good thing. And keeping it > in such a way as to make it possible to write a new one! > > OpenSwitch is one project that have written their own ofproto (last > time I looked) but they have a slightly different use of Open vSwitch > anyway (they focus more on the reconfigure code than on doing anything > with OpenFlow rules. > > Tony > > On Sat, Mar 18, 2017 at 7:44 PM, Stephen Bailey <st...@cs.uchicago.edu> wrote: > > Yes, they implement of-proto providers. > > > > I guess we've seen a disjoint set of switches, which is not necessarily > > surprising :-). > > > > What's the expectation for e.g. a P4 switch? It seems the most natural > > mapping is an OpenFlow-style pipeline (versus dpif). > > > > Admittedly, there are many other OpenFlow agents beside OVS (e.g. the P4 > > OpenFlow agent, etc etc), it just seems OVS is particularly important in > > open source networking (especially data center) and maintaining a distinct > > OpenFlow layer beneficial. > > > > That said, of course I wouldn't arm wrestle you over it if nobody else cares > > :-). > > > > Steph > > > > > > On Fri, Mar 17, 2017 at 11:24 PM, Ben Pfaff <b...@ovn.org> wrote: > >> > >> Do you mean that these implementations have their own ofproto provider > >> implementations, that is, that they do not use ofproto-dpif and instead > >> implement a different ofproto_class as defined in > >> ofproto/ofproto-provider.h? That indeed would be news to me. All of > >> the switches that I am aware of instead implement a dpif provider, as > >> defined in lib/dpif-provider.h. The dpif provider interface in that > >> file is valuable and not going away. > >> > >> On Fri, Mar 17, 2017 at 09:33:26AM +0800, Stephen Bailey wrote: > >> > I think it would be unfortunate to drop ofproto. > >> > > >> > I can't speak to Allied's implementation, but all switch implementations > >> > I > >> > am aware of use ofproto, including several I have worked on. > >> > > >> > These implementations don't tend to get upstreamed. However, I think > >> > OVS > >> > plays quite an important role as an (the?) OpenFlow reference > >> > implementation. > >> > > >> > I'm not sure if we could accomplish it but if it would help provide some > >> > mass against ofproto, perhaps we could get an implemention or two > >> > upstreamed? > >> > > >> > Steph > >> > > >> > > >> > On Mar 16, 2017 08:58, "Ben Pfaff" <b...@ovn.org> wrote: > >> > > >> > > On Tue, Mar 14, 2017 at 05:26:28PM +1300, Tony van der Peet wrote: > >> > > > >On Fri, Mar 10, 2017 at 11:14:55AM +0530, Shravan S K wrote: > >> > > > >> We are looking to buy a few OpenFlow-enabled switches. What > >> > > advantages can > >> > > > >> be achieved by a hardware switch that also supports OVS? > >> > > > >> And can a hardware openflow L2 switch perform L3,L4 based > >> > > > >> openflow > >> > > > >> forwarding - can I inspect L3,L4 layers and take a decision based > >> > > > >> on > >> > > them ? > >> > > > > > >> > > > >It's hard to tell. No one ever comes to us and says that they base > >> > > > >their switch on OVS. You have to guess. > >> > > > > >> > > > For the record, Allied Telesis have a range of switches that use > >> > > > OVS. > >> > > > >> > > Good to know. Do these switches implement a dpif provider or an > >> > > ofproto > >> > > provider? We're talking about dropping the ofproto provider layer, so > >> > > it's an important question. > >> > > _______________________________________________ > >> > > discuss mailing list > >> > > disc...@openvswitch.org > >> > > https://mail.openvswitch.org/mailman/listinfo/ovs-discuss > >> > > > > > > _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
