Based on your diagram, I'd think you'd want to run OVS inside VM2. This would be configured as you described with those ovs-vsctl commands.
However, this seems like a fairly non-standard setup. Usually, the networking is managed in the hypervisor, so VM1 and VM3 would just be wired up to OVS running there. But I may not understand what you're trying to do... --Justin On May 30, 2012, at 10:46 PM, Dong Jin wrote: > I am new to openvswitch and openflow. I setup the following scenario > on a single physical machine: > > VM1(veth1.0) ------- (veth2.0) VM2 (veth2.1) --------- (veth3.0) VM3 > > VM1 and VM3 are two end-hosts. VM3 is to emulate an Ethernet switch. > VM2 should be controlled by ovs-vswitchd (possibly with the POX > controller later). > > After going through the ovs-vswitchd.conf.db(5), here is my > understanding (correct me if I am wrong): The single ovs-vswitchd > manages a set of bridges (i.e. Ethernet switches), each bridge has a > set of ports (i.e. Ethernet interfaces). > > It looks that ovs-vswitchd should run outside any VMs, and it creates > br0 which represents the Ethernet switch. > ovs-vsctl add-br br0 > ovs-vsctl add-port br0 veth2.0 > ovs-vsctl add-port br0 veth2.1 > > I am a little bit confused here. I original thought there should be a > program running (or at least something stored) in VM2 so that VM2 can > emulate an Ethernet switch. It looks that the bridge representing the > switch is created outside VMs. So if I want to emulate 10 switches, > does that mean all the flow tables are stored and managed in a central > place outside VMs? If so, what is the usage of having VM2 here? > > I know mininet uses openvswitch and VMs (they use linux container) are > created for Ethernet switch respectively. I think I probably > misunderstand something here. Could someone kindly advise? > > thanks in advance. > > kevin > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
