= NFV Tutorial: Managing a Virtual Network Function using SDN and Control Theory =
== Overview ==
This is a basic tutorial that guides you through an experiment using OpenFlow and Network Function Virtualization (NFV). It is recommended that you first read about [http://archive.openflow.org OpenFlow]  and go over a basic [http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/OpenFlowOVS OpenFlow tutorial] on GENI. The goal of this tutorial is to give you a hands-on experience with OpenFlow, and how it can be used for NFV deployment. Using a basic topology, which contains two sources, a destination, two virtual network functions (IDS), an OVS and a controller, we will show how different OpenFlow rules can be used for NFV management. ''' Once resources are reserved for this topology, the tutorial should take about 45-60 minutes to complete. '''

[[Image(http://csr.bu.edu/rina/grw-bu2016/tutorial_files/image002.gif)]] [[BR]]
Figure 1: The image above depicts the network topology used in this tutorial.

=== Prerequisites: ===

-      A GENI account, if you don't have one sign up! [[BR]]
-      Familiarity with how to reserve GENI resources (we will be using the GENI Experimenter Portal as our tool).[[BR]]
-      Familiarity with [wiki:HowTo/LoginToNodes logging into GENI compute resources].[[BR]]
-      Basic understanding of OpenFlow. An OpenFlow tutorial is [wiki:GENIExperimenter/Tutorials/OpenFlowOVS here]! [[BR]]
-      Familiarity with the Unix command line.[[BR]]
-      Familiarity with the Python programming language. We will use a controller (POX controller) written in Python for this tutorial.[[BR]]
-      You will need to be a member of a project.[[BR]]

'''Note''': Another version of this tutorial using the [https://osrg.github.io/ryu/ Ryu controller ] is also provided, and details can be found [wiki:GENIExperimenter/Tutorials/NFV/Ryu here]. [[BR]]


=== Tools ===

-       [http://openvswitch.org/ Open vSwitch] [[BR]]
-       [http://www.noxrepo.org/pox/about-pox/ POX controller]

'''Both of the tools are already installed on the machines''' where the resources are provided. If it happens not to be installed, take a look at the following tutorials to learn how to install these tools: [[BR]]
[wiki:HowTo/InstallOVSInProtoGENI Open vSwitch][[BR]]
[http://networkstatic.net/pox-openflow-controller-installation-screencast/ POX controller] [[BR]]

Where to get help:

[https://openflow.stanford.edu/display/ONL/POX+Wiki POX Wiki] [[BR]]
[http://openvswitch.org/support/ Open vSwitch] [[BR]]
[http://groups.geni.net/geni GENI Wiki] [[BR]]

== Tutorial Instruction ==
{{{
#!html


<table id="Table_01" height="409" border="0" cellpadding="0" cellspacing="0">
	<tr>
		<td>
			<a href="http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/NFV/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>
               </td>
               <td>
<ul> 
             <li><a href="http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/NFV/DesignSetup">Part I: Design/Setup</a></li>
             <ul>
                 <li>Step 1:  Design the experiment</li>
                 <li>Step 2:  Establish the environment</li>
                 <li>Step 3:  Obtain resources</li>
             </ul></ul>
               </td>
	</tr>
	<tr>
		<td>
			<a href="http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/NFV/Execute"><img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/execute.png?format=raw" width="152" height="143" alt="Execute"></a>
                </td>
		<td>
             <ul>
<li><a href="http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/NFV/Execute">Part II: Execute</a></li>
             <ul> 
                 <li>Step 4:  Login to VMs </li>
                 <li>Step 5:  Configure and initialize services  </li>
                 <li>Step 6:  Execute expriment </li>
             </ul></ul>
                </td>
	</tr>
	<tr>
		<td>
			<a href="http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/NFV/Finish"><img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/finish.png?format=raw" width="152" height="114" alt="Finish"></a>
                </td>

		<td>
             <ul>
             <li><a href="http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/NFV/Finish">Part III: Finish</a></li>
             <ul>
                 <li>Step 7:  Teardown Experiment</li>
                 <li>Step 8:  Release resources</li>
             </ul></ul>
                </td>

	</tr>
</table>