Changes between Version 102 and Version 103 of GENIExperimenter/Tutorials/OpenFlowOVS/Execute
- Timestamp:
- 11/05/14 13:58:33 (9 years ago)
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GENIExperimenter/Tutorials/OpenFlowOVS/Execute
v102 v103 269 269 In the above example we ran a very simple learning switch controller. The power of !OpenFlow comes from the fact that you can decide to forward the packet anyway you want based on the supported !OpenFlow actions. A very simple but powerful modification you can do, is to duplicate all the traffic of the switch out a specific port. This is very useful for application and network analysis. You can imagine that at the port where you duplicate traffic you connect a device that does analysis. For this tutorial we are going to verify the duplication by doing a `tcpdump` on a port on the OVS switch. 270 270 271 1. Use the interfaces that are connected to `host2` and `host3`. If you haven't note them down you can use the manifest and the MAC address of the interfaces (ovs:if1 and ovs:if2) to figure this out. Run tcpdump on these interfaces; one in each of the two ovs terminals you opened. This will allow you to see all traffic going out the interfaces. 271 1. Use the interfaces that are connected to `host2` and `host3`. 272 273 Software Switch (OVS): If you haven't note them down you can use the manifest and the MAC address of the interfaces (ovs:if1 and ovs:if2) to figure this out. Run tcpdump on these interfaces; one in each of the two ovs terminals you opened. This will allow you to see all traffic going out the interfaces. 274 275 Hardware Switch: Refer to this Section: [http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/OpenFlowOVS/Appendix#Usefultips UsefulTips] 272 276 {{{ 273 277 sudo tcpdump -i <data_interface_name>