On Mon, Nov 11, 2013 at 10:45:53AM -0800, terryxing wrote: > I have a question about the ovs-ofctl command line to add flow. > > What I want is that, assume that I have 4 vms (H1, H2, H3 and H4) > connecting to the same bridge. when H1 send a packet for H2, I want it also > forwards to H4.
You could do this with OVS, without the need for OpenFlow, by setting up a port mirror. See ovs-vsctl(8) for an example. > I can append the H4 output port to the actions output ports > but I dont want to use the ovs port to do that since it only works in the > single OVS environment. When I have two OVS, OVS1 can not know the output > port of OVS2. I don't understand the statements above. > Thus, I wondering that can I do like this as below: > > First forward the packet just based on the layer 2 learning swtich, > forwarding the packet to the destination where it should do, like H2 in the > previous example, and then, rewrite the des_ip on the packet and forward it > based on the des_ip again (for example, H4 ip address). Because using IP > address, I do need to worry about the port across different OVS (all OVSs > are connected through tunnel. All VMs are in the same subnet even they are > located on different servers.) It sounds like you're looking for routing, since you want to forward based on the IP address. OVS doesn't have built-in support for routing, although a controller can implement routing with OVS using OpenFlow. _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
