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GEMINI

Timestamp:: 07/22/16 11:55:52 (8 years ago)
Author:: tteixeir@bbn.com
Comment:: --

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GENIExperimenter/Tutorials/jacks/GettingStarted_PartII_ndn/Procedure/Execute/GEMINI

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      <b>Figure 5-1</b> Click on the <i>GENI Desktop</i> button in the Slice Tools section of your Slice page.
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      <b>Figure 5-4</b> <i>GENI Desktop Welcome</i>.
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 === 5.2.3 Visualizing your Experiment ===
 a. At this point you will see four graphs showing traffic on each of the four links on your experiment.  The traffic you see on the links is broadcast traffic from the switch on the rack to which these nodes connect.  It is not related to your experiment.
+a. At this point you will see two graphs showing traffic on each of the links on your experiment.  The traffic you see on the links is broadcast traffic from the switch on the rack to which these nodes connect.  It is not related to your experiment.
 {{{
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    <ol>
      <li> Go back to the ssh window you used to log into the researcher node (a.k.a. <tt>user</tt>) when you did the CCN exercise.  </li>
      <li> Use the <tt> /opt/ccnx-atmos/client.py </tt> program to fetch precipitation data for a time period you had not previously fetched.  This is to make sure the data will be fetched from the data source (<tt>data</tt>) and not from the cache at some node.  The time period must be between 1 Jan 1902 and 31 Jan 1902. </li>
+     <li> Go back to the ssh window you used to log into the PI or Experimenter nodes when you did the NDN exercise.  </li>
+     <li> Use the <tt> consumer.py </tt> program to fetch a namespace you had not previously fetched.  This is to make sure the data will be fetched from the custodian and not from the cache at some node.</li>
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 b. Your graphs should now show traffic on the {{{router-dsrc1}}} and {{{link0}}} links (see example below).  The graph on the left is the network being quiet, while the graph on the right shows traffic flowing. This is because the precipitation data was not cached anywhere and had to be fetched from the data source. ''Please take note that the graphs are not scaled for direct comparison and take careful note of whether the max Y values are in bytes or kilobytes.''
+b. Your graphs should now show traffic on the {{{lan-1}}} and {{{lan-2}}} links (see example below). The left part of the graphs is the network being quiet, while the spikes on the right are the Interest requests and Data packets. The first spike on {{{lan-2}}} is a request from the Internet-Router node, thus no traffic on {{{lan-1}}}. The same request is made by one of the consumers {{{PI}}} or {{{Experimenter}}}, thus traffic only flows on {{{lan-1}}}. The second spike on both graphs is one of the consumers fetching data from the custodian node. ''Please take note that the graphs are not scaled for direct comparison and take careful note of whether the max Y values are in bytes or kilobytes.''
  [[Image(http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Images/GENIDesktop-CmpTraf.png?format=raw, nolink, 50%)]]
+ [[Image(http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/jacks/GettingStarted_PartII_ndn/graphics/TrafficGraphs.png?format=raw, nolink, 50%)]]
-c. Fetch the same data again.  Notice there is no experiment traffic on the links.  This is because the data was fetched from the cache on the node {{{user}}}.
-d. You can investigate the CCN application further:
-. Log into the collaborator node ({{{user-1}}}) to fetch data that was previously fetched by the researcher node ({{{user}}}).  Can you tell from where the data is fetched based on the graphs?
-. From the collaborator node fetch data that was not previously fetched by the researcher.  Where did the data come from this time?
 == Cleaning up ==
 Go back to the [wiki:GENIExperimenter/Tutorials/GettingStarted_PartII_ccn/Procedure/Finish CCN exercise] to free up the resources you used in this experiment.
+Go back to the [wiki:GENIExperimenter/Tutorials/jacks/GettingStarted_PartII_ndn/Procedure/Finish NDN exercise] to free up the resources you used in this experiment.