Changes between Version 1 and Version 2 of GENIExperimenter/Tutorials/GREESC13/OpenFlowWiMAX

06/23/13 14:39:34 (6 years ago)
Ryan Izard



  • GENIExperimenter/Tutorials/GREESC13/OpenFlowWiMAX

    v1 v2  
    1 = OpenFlow and WiMAX =
     1= Vertical Handoff with OpenFlow =
     3== Overview: ==
     4    This tutorial is designed to give an insight into how OpenFlow can be used to conduct network experiments. As background, a vertical handoff is the (ideally seamless) migration of a network connection from one network interface to another of a different technology. An example might be your cell phone transitioning from a WiFi to a 4G connection while streaming a video. Vertical handoffs are traditionally handled by the network infrastructure, leaving providing little-to-no control of the handoff execution at the client. Clemson University and the University of Wisconsin have partnered to develop and test a client-initiated and controlled vertical handoff. This project is being done using GENI resources -- namely Clemson's GENI WiFi and WiMAX testbeds. Further development is also planned in GENI's Orbit testbed at Rutgers.
     6    This vertical handoff project is being developed on physical machines; however, for the purpose of this tutorial, our development environment has been ported to a virtual machine (VM) so all can participate without regard the the unique hardware capabilities of each participant. This tutorial will walk you through how to perform a Layer-2 (L2) handoff using OpenFlow within a virtual machine. As you will discover, because this solution is dependent only on Linux network interface handles, you can apply it to any interface on a physical host. The VM provided has two host-only interfaces and one interface tied to a physical adapter on the host machine. The host-only interfaces communicate with the VMware tap interface added by VMware to the host machine. In this tutorial, we will demonstrate how to run our handoff solution between these host-only interfaces.
     10== Prerequisites: ==
     11   - Computer with 2G RAM or higher (recommended)
     12   - Windows (turnoff firewall); Mac/Linux (root at terminal)
     13   - VM image (link to Clemson Box account)
     14   - Familiarity with SSH, Linux terminal, Bash and Python scripting
     15   - Basic networking and OpenFlow background
     17== Tools: ==
     18   - On your host machine (please install before GREESC13 tutorial session):
     19      - VMware Player:
     20      - PuTTY is recommended, a free implementation of Telnet and SSH for all platforms
     21        Windows/Mac users:
     22        Linux users: sudo apt-get install putty
     23   - Within your VM image (we have already installed these items):
     24      - OpenVPN. This tool is used to create the internal tap interface, from which the traffic is originated:
     25      - Floodlight OpenFlow Controller. The OpenFlow controller we use to switch the network traffic.
     26        Information:
     27        Installation:
     28      - Open vSwitch (OVS). The open virtual switch that allows a network interface to be OpenFlow-enabled.
     29        Information:
     30        Installation:;a=blob_plain;f=INSTALL;hb=HEAD
     32== Where to get Help: ==
     33   - Questions/Help: Ryan Izard,; Fan Yang,
     34   - Floodlight Developers Group:!forum/floodlight-dev
     36== Resources: ==
     37   - Floodlight:
     38   - Handoff Code: (work-in-progress...)
     40== Tutorial Instructions ==
     48<table id="Table_01" height="409" border="0" cellpadding="0" cellspacing="0">
     49        <tr>
     50                <td>
     51                        <a href=""><img src="" width="152" height="152" alt="Design/Setup"></a>
     52               </td>
     53               <td>
     55             <li><a href="">Part I: Design/Setup</a></li>
     56             <ul>
     57                 <li>Step 1:  Design Experiment</li>
     58                 <li>Step 2:  Establish Management Environment</li>
     59                 <li>Step 3:  Obtain Resources</li>
     60             </ul></ul>
     61               </td>
     62        </tr>
     63        <tr>
     64                <td>
     65                        <a href=""><img src="" width="152" height="143" alt="Execute"></a>
     66                </td>
     67                <td>
     68             <ul>
     69<li><a href="">Part II: Execute</a></li>
     70             <ul>
     71                 <li>Step 4:  Configure and Initialize Services </li>
     72                 <li>Step 5:  Execute Experiment </li>
     73                 <li>Step 6:  Analyze and Visualize Experiment </li>
     74             </ul></ul>
     75                </td>
     76        </tr>
     77        <tr>
     78                <td>
     79                        <a href=""><img src="" width="152" height="114" alt="Finish"></a>
     80                </td>
     82                <td>
     83             <ul>
     84             <li><a href="">Part III: Finish</a></li>
     85             <ul>
     86                 <li>Step 7:  Teardown Experiment</li>
     87                 <li>Step 8:  Archive Experiment</li>
     88             </ul></ul>
     89                </td>
     91        </tr>