Changes between Version 6 and Version 7 of GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayoutVT


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Timestamp:
06/14/13 17:35:53 (6 years ago)
Author:
Vic Thomas
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  • GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayoutVT

    v6 v7  
    1919  * Familiarity with the Unix command line.
    2020
     21== Tools ==
     22The two tools you will be using in this assignment are ''Traffic Control (tc'' and ''iperf''.  These tools will already be installed on the GENI nodes you use in your experiment.  You do not need them on your computer.   [[BR]]
     23'''1. [http://linux.die.net/man/8/tc Traffic Control (tc)'''[[BR]]
     24You will find the tc command in the ''/sbin'' directory of the GENI nodes.
     25This command manipulates the Linux network forwarding tables, allowing for configuration of queuing disciplines,
     26which change the policies controlling which packets are forwarded in what order and which are dropped; and network
     27emulation, which allows the Linux kernel to emulate various network conditions such as delay or loss.
     28These two effects are provided by the qdisc and netem subcommands, respectively.
     29In these exercises, tc will be used to modify network conditions and enable different scheduling policies.
     30Example command lines will be provided.
     31
     32'''2. [http://iperf.sourceforge.net/ Iperf]'''[[BR]]
     33Iperf is available on the GENI nodes, located at ''/usr/local/etc/emulab/emulab-iperf''.
     34Iperf is used to measure the bandwidth performance of Internet links. In these exercises,
     35it is used to study the behavior of TCP in the face of changing link characteristics.
     36Iperf runs as both a server and a client. The server is started with the -s command line option,
     37and listens for connections from the client. The client is started with the ''-c <server>'' command line option,
     38and connects to the server and sends data at either the fastest possible rate (given the underlying network)
     39or a user-specified rate. The -u option causes the sender or receiver to use UDP instead of TCP.
     40Various other options will be required for these exercises, and provided in the appropriate sections.
     41All Iperf measurement data should be recorded from the TCP receiver (server) side.
     42
     43== Tutorial Instructions ==
     44{{{
     45#!html
     46
     47
     48<table id="Table_01" height="409" border="0" cellpadding="0" cellspacing="0">
     49        <tr>
     50                <td>
     51                        <a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/DesignSetup"><img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/design.png?format=raw" width="152" height="152" alt="Design/Setup"></a>
     52               </td>
     53               <td>
     54<ul>
     55             <li><a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/DesignSetup">Part I: Design/Setup</a></li>
     56             <ul>
     57                 <li> Lists of steps for setting up the exercise </li>
     58             </ul></ul>
     59               </td>
     60        </tr>
     61        <tr>
     62                <td>
     63                        <a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/Execute"><img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/execute.png?format=raw" width="152" height="143" alt="Execute"></a>
     64                </td>
     65                <td>
     66             <ul>
     67<li><a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/Execute">Part II: Execute</a></li>
     68             <ul>
     69                 <li> Lists of steps for executing the exercise</li>
     70             </ul></ul>
     71                </td>
     72        </tr>
     73        <tr>
     74                <td>
     75                        <a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/Finish"><img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/finish.png?format=raw" width="152" height="114" alt="Finish"></a>
     76                </td>
     77
     78                <td>
     79             <ul>
     80             <li><a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/Finish">Part III: Finish</a></li>
     81             <ul>
     82                 <li> Lists of steps for tearing down the exercise</li>
     83             </ul></ul>
     84                </td>
     85
     86        </tr>
     87</table>
     88
     89}}}
     90
     91== Credits ==
     92This assignment was originally designed by [http://www.cs.purdue.edu/homes/fahmy/ Prof. Sonia Fahmy] and Ethan Blanton of Purdue University.
     93
     94---------------------
    2195
    2296
     
    71145 * GENI resources include a variety of computational and network assets, all programmable by experimenters.  Resources are made available to experimenters by GENI ''aggregates''.  The [wiki:UnderstandingGENI UnderstandingGENI page] has more information in its [wiki:UnderstandingGENI#a2AnExperimentersViewofGENI "An Experimenter's View of GENI"] and [wiki:UnderstandingGENI#a3GENIResources "GENI Aggregates"] sections.
    72146
    73 == Tutorial Instructions ==
    74 {{{
    75 #!html
    76 
    77 
    78 <table id="Table_01" height="409" border="0" cellpadding="0" cellspacing="0">
    79         <tr>
    80                 <td>
    81                         <a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/DesignSetup"><img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/design.png?format=raw" width="152" height="152" alt="Design/Setup"></a>
    82                </td>
    83                <td>
    84 <ul>
    85              <li><a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/DesignSetup">Part I: Design/Setup</a></li>
    86              <ul>
    87                  <li> Lists of steps for setting up the exercise </li>
    88              </ul></ul>
    89                </td>
    90         </tr>
    91         <tr>
    92                 <td>
    93                         <a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/Execute"><img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/execute.png?format=raw" width="152" height="143" alt="Execute"></a>
    94                 </td>
    95                 <td>
    96              <ul>
    97 <li><a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/Execute">Part II: Execute</a></li>
    98              <ul>
    99                  <li> Lists of steps for executing the exercise</li>
    100              </ul></ul>
    101                 </td>
    102         </tr>
    103         <tr>
    104                 <td>
    105                         <a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/Finish"><img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/finish.png?format=raw" width="152" height="114" alt="Finish"></a>
    106                 </td>
    107 
    108                 <td>
    109              <ul>
    110              <li><a href="http://groups.geni.net/geni/wiki/GENIEducation/SampleAssignments/TcpAssignment/ExerciseLayout/Finish">Part III: Finish</a></li>
    111              <ul>
    112                  <li> Lists of steps for tearing down the exercise</li>
    113              </ul></ul>
    114                 </td>
    115 
    116         </tr>
    117 </table>
    118 
    119 }}}
    120 
    121 == Credits ==
    122 This assignment was originally designed by [http://www.cs.purdue.edu/homes/fahmy/ Prof. Sonia Fahmy] and Ethan Blanton of Purdue University.