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> À : DarkBls <dark...@yahoo.com> Envoyé 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> > À : DarkBls <dark...@yahoo.com> > Cc : discuss@openvswitch.org > Envoyé 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
