However, at least if you are writing your configuration server in C, Open vSwitch has some fairly general-purpose libraries to speak the configuration protocol (and I'm working on improving them further).
On Fri, Jan 22, 2010 at 09:10:16AM -0800, Martin Casado wrote: > The next branch supports the configuration protocol. But yes, you > would have to write your own configuration server. > > > >I see, so if I want to have a fully centralized datase configuration for all > >my OvS (hardware distributed) I must wait to have OpenFlow configuration > >protocol added, right ? (and code my own configuration server ?) > > > > > > > > > >----- Message d'origine ---- > >De : Justin Pettit <jpet...@nicira.com> > >? : DarkBls <dark...@yahoo.com> > >Envoy? le : Ven 22 Janvier 2010, 10 h 20 min 51 s > >Objet : Re: Re : [ovs-discuss] GRE support > > > >The configuration database (ovsdb-server) runs locally on the > >switch. ovs-vswitchd connects to ovsdb-server over a JSON-RPC > >unix domain socket. Configuration changes made in the database > >are immediately reflected in the switch. In fact, programs such > >as ovs-vsctl communicate over the same mechanism and won't return > >until the changes have actually been implemented in ovs-vswitchd. > > > >This JSON-RPC protocol will be the same one used by the OpenFlow > >configuration protocol. > > > >--Justin > > > > > >On Jan 22, 2010, at 12:49 AM, DarkBls wrote: > > > >>Thanks you for that. > >> > >>For my own issue GRE tunnel would be very very interresting since 802.1ad > >>is quite difficult to implement. Some switch doesn't support it in my > >>infrastructure (BNT/Nortel) and I don't know what will be their behavior if > >>they see double tagged frame. Further more, the linux drivers shoud support > >>it too. > >> > >>A centralized configuration database and GRE support would be quit a nice > >>solution. Are the DB polled regulary to see if the configuration changed ? > >>What's the trigger ? > >> > >> > >> > >>----- Message d'origine ---- > >>De : Justin Pettit <jpet...@nicira.com> > >>? : DarkBls <dark...@yahoo.com> > >>Cc : discuss@openvswitch.org > >>Envoy? le : Ven 22 Janvier 2010, 9 h 30 min 32 s > >>Objet : Re: [ovs-discuss] GRE support > >> > >>Yes, if your kernel supports GRE tunnels and you create them externally > >>with some program like "ip", you should be able to attach them as you would > >>other system devices. The support added to GRE does the following: > >> > >> - Ethernet over GRE was added to Linux 2.6.28, and it took a while > >> before all the bugs were ironed out. We've back-ported support and fixes > >> all the way back to at least 2.6.18. > >> > >> - You can directly configure the GRE tunnels through OVS's configuration > >> database. This means that if you're using a remote configuration protocol > >> like the one coming to OpenFlow (1.0.5?), you'll be able to remotely setup > >> and configure your GRE tunnels. > >> > >>We're also working on a few other improvements, such as support for PMTU. > >>The ones I listed above are what's immediately available in the "next" > >>branch. > >> > >>--Justin > >> > >> > >>On Jan 22, 2010, at 12:21 AM, DarkBls wrote: > >> > >>>Hi, > >>> > >>>I know that GRE is already there in the unstable branch and will be > >>>"available" (documented) in the stable branch within a couple of month. > >>> > >>>Can someone explain me what is the OvS support of GRE exactly ? Does'nt > >>>this already work ? : > >>> > >>>Server A with OvS (#1) > >>> GRE tunnel to Server B displayed as gretapB > >>>Server B with OvS (#2) > >>>GRE tunnel to Server A displayed as gretapA > >>> > >>>gretapA added ni OvS1 and gretapB added in OvS2 > >>> > >>>Thank you for your explaination > >>> > >>> > >>> > >>> > >>>_______________________________________________ > >>>discuss mailing list > >>>discuss@openvswitch.org > >>>http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org > >> > > > > > > > >_______________________________________________ > >discuss mailing list > >discuss@openvswitch.org > >http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org > > > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org
