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Workflow
************************
1. Define the network graph, creating instances of model.Node and
model.DIF classes.
2. Create an instance of a Testbed class.
3. Create an instance of the selected prototype.Experiment class,
passing the testbed instance and a list of Node instances.
1. At the end of the base Experiment constructor, the
generate function is called to generate information about
per-node IPCPs, registrations and enrollment, ready to be
used by the plugins.
4. Call methods on the prototype.Experiment instance:
1. swap_in() swaps the experiment in on the testbed, and fills in
the missing information in the model.
2. install_prototype() installs the chosen prototype on the
testbed. Currently an Ubuntu image is assumed.
3. bootstrap_prototype() calls a prototype-specific setup function,
to create the required IPCPs, perform registrations,
enrollments, etc.
4. swap_out() swaps the experiment out of the testbed.
5. Run a Storyboard to emulate real network traffic.
Accessing nodes after swap-in
-----------------------------
To access a node once the experiment swapped in, use the following
command (in the same terminal where ssh-agent was run in case of jFed): ::
$ rumba-access $NODE_NAME
Where $NODE_NAME is the name of the node to access. In case of the
QEMU testbed, the password of the downloaded buildroot images is
'root'.
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