= [../Setup Understanding the AM API using Named Data Networking] = {{{ #!html

}}} == 4 Wait for resources to be ready == You can tell whether your nodes are ''ready'' by using a script built on `omni` called `readyToLogin`. {{{ #!html

Please use the command:

 
readyToLogin -a AM_NICKNAME LabOne 
 
where (as before) AM_NICKNAME and LabOne are your aggregate 
manager nickname and your slice name (both found on your worksheet).

If it reports that the sliver is not yet ready (for example, it might say that the status is "changing"), then wait a minute or two and try again. Once everything is complete, readyToLogin will give output that should look something like this:

 
... 
rschr's geni_status is: ready (am_status:ready)  
User example logs in to rschr using: 
        ssh  -p 32768 -i /Users/example/.ssh/geni_key_portal example@pc1.utah.geniracks.net 
User example logs in to collar using: 
        ssh -p 32769 -i /Users/example/.ssh/geni_key_portal example@pc1.utah.geniracks.net 
...

}}} == 5 Trying out the NDN application == In this experiment, you will be able to see the NDN in-network caching in action. Our experiment consists of the following nodes: * A data source node, called {{{Custodian}}} that holds data in the namespace /nytimes * A internet router node, called {{{Internet}}} that forwards Interest and Data packets to and from the custodian. * A university hub node, called {{{University}}} that forwards Interest and Data packets to and from the university nodes. * A principal investigator node, called {{{PI}}} and a experimenter node, called {{{Experimenter}}} that will issue Interest requests. Download the scripts and Python codes to your computer and extract it. * [http://192.1.242.151/files/ndn-tutorial.gz ndn-tutorial.gz] Or alternatively, {{{ $ wget http://192.1.242.151/files/ndn-tutorial.gz $ tar -xvf ndn-tutorial.gz }}} In the '''ndn-tutorial-config.sh''' configuration file, edit the fields according to your GENI username, SSH key, GENI Aggregate name, pc and port numbers. Keep the quotes format unchanged, otherwise the script may not run. Run '''copy-scripts.sh''', this will automatically transfer the necessary files to the nodes in our topology. Login into the node '''Custodian''' and start the NDN Forwarding Daemon (NFD), {{{ $ nfd-start }}} wait until the shell prompt returns (~ a few seconds). The NFD is now up and running. === 5.1 Run the NDN application on the same node === {{{ $ python producer.py -n /nytimes }}} On another terminal, run {{{ $ python consumer.py -u /nytimes/science }}} === 5.2 Run the NDN application on the entire topology === === 5.3 (Optional) Visualize experiment data flows === To use the GENI Desktop to visualize the data flows in your network, continue with the instructions [wiki:GENIExperimenter/Tutorials/GettingStarted_PartII_ccn/Procedure/Execute/GEMINI here]. ---- = [wiki:GENIExperimenter/Tutorials/jacks/GettingStarted_PartII_ndn/Procedure/Setup Setup] = = [wiki:GENIExperimenter/Tutorials/jacks/GettingStarted_PartII_ndn/Procedure/Finish Next: Finish] =