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
