= [http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/StitchingTutorial GENI Inter-Aggregate Stitching Tutorial] =

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= Step 4: Execute Experiment =

To run the experiment we will use two terminals to login to the ''"right-client"'' and the ''"left-client"'' VMs and one browser to connect to the ''"server"'' VM to review results.


'''1.''' Start 2 terminal windows and use the `readyToLogin` script to determine the login information: 

__Window 1:__
{{{
$ readyToLogin -a rightAggr MySlice
....
$ ssh -i right-client....
...
}}}
__Window_2:__
{{{
$ readyToLogin -a leftAggr MySlice
...
$ ssh -i left-client....
...
}}}

'''2.''' Now let's compare the delay over each link type. 

In the ''"right-client"'' terminal issue:
{{{
right-client$ ping -c 20 192.168.1.2 -q
}}}

In the ''"left-client"'' terminal issue:
{{{
left-client$ ping -c 20 10.10.1.2 -q
}}}


'''3.''' Start a browser and navigate to the ''"server's"''s hostname from readyToLogin output in previous step. For this example experiment the hostname allocated is pcvm1-15.instageni.stanford.edu:
 
     [[Image(GENIExperimenter/Graphics:server-web.jpg,65%)]]
 
'''4.''' Now let's generate some iperf traffic:

In the ''"right-client"'' window issue:
{{{
right-client$ /usr/bin/iperf -c 192.168.1.2 -t 30 -P 5
}}}

In the ''"left-client"'' window issue:
{{{
left-client$ /usr/bin/iperf -c 10.10.1.2 -t 30 -P 5
}}}

'''5.''' Now back in the browser: Refresh the web page and you should see the results from the iperf server. 

   ''Note: '' The interface capacity for all links was set to '' '''20 Mbits/sec''' '' in the RSpec used for this tutorial.

     [[Image(GENIExperimenter/Graphics:server-web2.jpg)]]

The experiment is now completed; time to release resources!

= [http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/StitchingTutorial Introduction] =
= [http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/StitchingTutorial/Finish Finish] =