Changes between Version 102 and Version 103 of GENIExperimenter/Tutorials/OpenFlowOVS/Execute


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Timestamp:
11/05/14 13:58:33 (5 years ago)
Author:
rrhain@bbn.com
Comment:

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  • GENIExperimenter/Tutorials/OpenFlowOVS/Execute

    v102 v103  
    269269In 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.
    270270
    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]
    272276  {{{
    273277  sudo tcpdump -i <data_interface_name>