Please see my response below.
> On Apr 7, 2016, at 10:29 AM, Eugene L. Vorokov <v...@pidarasy.org> wrote: > > Hi guys, > > I'm trying to setup L2 network using OpenVSwitch. There are 3 hosts > with openvswitch running on them, each host is connected to the > internet and has some local network behind it, the goal is to unite > all those local networks on L2 level. > > I've set up vxlan tunnels between 3 openvswitch hosts, but it seems > like fully meshed topology (connecting 1-2, 2-3 and 1-3) leads to > network loop, and everything stops working. If I only connect say 1-2 > and 2-3, so that topology is tree-like, everything works, but packets > from 1 to 3 travel long way through 2, which is not what I need - they > all are connected to the same Internet and such long path makes no > sense. > > Is there a way to setup openvswitch to support fully meshed topology? > What I need is that each host in L2 network could reach any other host > in that network via the fastest possible path. > > For example, it would be fine if openvswitch would deny packet > forwading between two vxlan ports, so that packets can only travel > between two directly connected openvswitch hosts. Can this be set up > somehow? Yes. Enable STP on the OVS bridges, as described here: <http://blog.scottlowe.org/2013/11/22/an-update-on-using-gre-tunnels-with-open-vswitch/> Although the blog post talks about GRE tunnels, it's also applicable to VXLAN/STT/Geneve tunnels as well. Be aware this is not without its drawbacks. Any time the topology changes STP will run again, which may cause undesirable delays in traffic forwarding/processing. -- Scott _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
