Changes between Initial Version and Version 1 of GENIExperimenter/Tutorials/GettingStarted_PartI/Procedure/Execute

Timestamp:

01/10/14 16:13:57 (10 years ago)

Author:

sedwards@bbn.com

Comment:

--

GENIExperimenter/Tutorials/GettingStarted_PartI/Procedure/Execute

@@ +1 @@
+=
+[http://groups.geni.net/geni/wiki/GENIExperimenter/Tutorials/GettingStarted_PartI/Procedure  Lab Zero: A First Experiment Using GENI] =
+{{{
+#!html
+
+<div style="text-align:center; width:495px; margin-left:auto; margin-right:auto;">
+<img id="Image-Maps_5201305222028436" src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/Execute.jpg?format=raw" usemap="#Image-Maps_5201305222028436" border="0" width="495" height="138" alt="" />
+<map id="_Image-Maps_5201305222028436" name="Image-Maps_5201305222028436">
+<area shape="rect" coords="18,18,135,110" href="./DesignSetup" alt="" title=""    />
+<area shape="rect" coords="180,18,297,111" href="./Execute" alt="" title=""    />
+<area shape="rect" coords="344,17,460,110" href="./Finish" alt="" title=""    />
+<area shape="rect" coords="493,136,495,138" href="http://www.image-maps.com/index.php?aff=mapped_users_5201305222028436" alt="Image Map" title="Image Map" />
+</map>
+<!-- Image map text links - End - -->
+
+</div>
+}}}
+
+
+== 4.  Configure and Initialize ==
+
+
+Now that you have reserved your resources, you are ready to run your first GENI experiment. For the purpose of this tutorial we are going to do a simple layer 2 experiment.  
+
+=== 4.1 Login to nodes ===
+{{{
+#!html
+<table border="0">
+      <tr>
+
+       <td >
+         <ol type='a'>
+            <li>To login to a VM, again click the <b>i</b> in the circle.</li>
+           <li>Now, click on the ssh link. If you have installed <a target="https://addons.mozilla.org/en-us/firefox/addon/firessh/"> FireSSH </a> a new tab will open up.
+</li>
+           <li> In the window that will pop up : 
+                <ul>
+                  <li> in the password field type in your passphrase</li>
+                  <li> for the private key, browse to the file that has your private key
+                   <li> <b> Press OK </b> </li>
+                </ul>
+             </li>
+           <li><FONT COLOR="black">Repeat the previous step for the second VM.</font></li>
+          </ol>
+
+<table id="Table_03" border="0" cellpadding="5" cellspacing="0">
+        <tr>
+                <td>
+                        <img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/Symbols-Tips-icon.png?format=raw" width="50" height="50" alt="Tip">
+               </td>
+               <td>
+                    To ssh from the command line, do the following (substituting the values shown on the screen):
+<pre>
+ssh USERNAME@HOSTNAME -p PORT
+</pre>
+        </tr>
+</table>
+
+       </td>
+        <td> 
+        <img border="0" src="http://groups.geni.net/geni/attachment/wiki/GEC17Agenda/GettingStartedWithGENI_I/Graphics/client_ssh_highlight_v1.png?format=raw" alt="Login information for a VM"  height="325" title="Login information for a VM" /> 
+<br />
+         <b>Figure 4-1</b> <i>Login to a VM</i>.</i>
+       </td>
+    </tr>
+ </table>
+}}}
+
+=== 4.2 (optional) Download and compile experiment software ===
+
+This step is only required if you are going to do step 5.2.
+
+ a. In the first terminal, download the pingPlus software:
+{{{
+wget http://www.gpolab.bbn.com/experiment-support/Layer2Ping/pingPlus-0.2.tar.gz
+}}}
+ b. Decompress the pingPlus software: 
+{{{
+tar xvfz pingPlus-0.2.tar.gz
+}}}
+ c. If you are using an ExoGENI rack, first install the compiler.
+{{{
+sudo apt-get update
+sudo apt-get install build-essential
+}}}
+{{{
+#!html
+<table id="Table_03" border="0" cellpadding="5" cellspacing="0">
+        <tr>
+                <td>
+                        <img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/instageni-logo.png?format=raw" width="50" height="50" alt="InstaGENI">
+               </td>
+               <td>The default image on the InstaGENI rack already includes a C compiler.</td>
+                   
+        </tr>
+</table>
+}}}
+ d. Compile the pingPlus software.
+{{{
+cd pingPlus-0.2
+make
+}}}
+ e. Your output should look like this:
+{{{
+client:~% wget http://www.gpolab.bbn.com/experiment-support/Layer2Ping/pingPlus-0.2.tar.gz
+--2013-07-05 09:32:26--  http://www.gpolab.bbn.com/experiment-support/Layer2Ping/pingPlus-0.2.tar.gz
+Resolving www.gpolab.bbn.com (www.gpolab.bbn.com)... 192.1.249.17
+Connecting to www.gpolab.bbn.com (www.gpolab.bbn.com)|192.1.249.17|:80... connected.
+HTTP request sent, awaiting response... 200 OK
+Length: 4726 (4.6K) [application/x-gzip]
+Saving to: `pingPlus-0.2.tar.gz'
+
+100%[================================================================================================================================================================>] 4,726       --.-K/s   in 0.07s
+
+2013-07-05 09:32:27 (69.1 KB/s) - `pingPlus-0.2.tar.gz' saved [4726/4726]
+
+client:~% tar xvfz pingPlus-0.2.tar.gz
+./._pingPlus-0.2
+pingPlus-0.2/
+pingPlus-0.2/._Makefile
+pingPlus-0.2/Makefile
+pingPlus-0.2/._packetFunctions.c
+pingPlus-0.2/packetFunctions.c
+pingPlus-0.2/._packetFunctions.h
+pingPlus-0.2/packetFunctions.h
+pingPlus-0.2/._pingPlus.c
+pingPlus-0.2/pingPlus.c
+pingPlus-0.2/._pingPlusListener.c
+pingPlus-0.2/pingPlusListener.c
+pingPlus-0.2/._README
+pingPlus-0.2/README
+client:~% cd pin
+pingPlus-0.2/        pingPlus-0.2.tar.gz
+client:~% cd pingPlus-0.2
+client:~/pingPlus-0.2% make
+gcc    -c -o packetFunctions.o packetFunctions.c
+gcc    -c -o pingPlusListener.o pingPlusListener.c
+gcc  packetFunctions.o pingPlusListener.o  -o pingPlusListener
+gcc    -c -o pingPlus.o pingPlus.c
+gcc  packetFunctions.o pingPlus.o -o pingPlus
+}}}
+ f. Repeat the above in the second terminal.
+
+== 5.  Execute Experiment ==
+
+=== 5.1 Send IP traffic ===
+The first simple experiment that we will run is to verify the IP connectivity between our hosts. 
+ 
+    a. Check the interfaces of your nodes. In the terminal type:
+    {{{
+   sudo ifconfig
+  }}}
+    You should see at least two interfaces:
+      * The '''control interface'''. This is the interface you use to access the node, e.g. ssh into your host. The control interface is mainly used for control traffic, i.e. traffic for controlling the node and the experiment. 
+      * The '''data interface'''. This is the interface that is used for sending experimental traffic. This is the interface that connects to the other hosts of your experiment through GENI. The links between these interfaces are the ones that allow you to run non-IP experiments. '''The data interface is the one that has an IP address and mask that match what you configured before you reserved your resources.'''
+    b. Fill in the worksheet, noting the name and  IP address of the control and of the data interfaces for each node.  
+{{{
+#!html
+
+<table id="Table_02" border="0" cellpadding="5" cellspacing="0">
+        <tr>
+                <td>
+                        <img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/Symbols-Tips-icon.png?format=raw" width="50" height="50" alt="Tip">
+               </td>
+               <td>
+                    The command prompt on each node says "client" or "server" respectively.
+               </td>
+        </tr>
+</table>
+}}}  
+    c. From the client, ping the server. From the terminal window that is logged in to the client type :
+{{{
+    ping <server data IP addr> -c 5
+}}}
+       For example:
+{{{
+    ping 10.17.1.2 -c 5
+}}}
+       An example output should look like :
+    {{{
+
+[sedwards@client ~]$ ping 10.17.1.2 -c 5
+PING 10.17.1.2 (10.17.1.2) 56(84) bytes of data.
+64 bytes from 10.17.1.2: icmp_req=1 ttl=64 time=183 ms
+64 bytes from 10.17.1.2: icmp_req=2 ttl=64 time=91.2 ms
+64 bytes from 10.17.1.2: icmp_req=3 ttl=64 time=91.1 ms
+64 bytes from 10.17.1.2: icmp_req=4 ttl=64 time=91.1 ms
+64 bytes from 10.17.1.2: icmp_req=5 ttl=64 time=91.2 ms
+
+--- 10.17.1.2 ping statistics ---
+5 packets transmitted, 5 received, 0% packet loss, time 4004ms
+rtt min/avg/max/mdev = 91.156/109.579/183.129/36.775 ms
+}}}
+
+
+=== 5.2 (optional) Send non-IP traffic ===
+
+Doing this step requires that you did step 4.2 above.
+
+GENI provides the capability of running non-IP experiments, since you can connect your hosts at Layer 2. For the purpose of this tutorial we will use a very simple Layer 2 ping program that sends packets using a custom ethernet type. 
+
+    a. ExoGENI nodes run a service called "neuca" that managed network interfaces on the node.  To manually adjust the IP address, we must first disable neuca on both nodes.
+{{{
+sudo service neuca stop
+}}}
+{{{
+#!html
+<table id="Table_03" border="0" cellpadding="5" cellspacing="0">
+        <tr>
+                <td>
+                        <img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/exogeni-logo.png?format=raw" width="50" height="50" alt="ExoGENI">
+               </td>
+               <td>The ExoGENI "neuca" service controls a variety of network configuration details.</td>
+                   
+        </tr>
+</table>
+}}}
+    b. Disable the IP on both of your nodes (being careful to disable IP on the data interface NOT the control interface).
+       In each of the terminals type:
+{{{
+  sudo ifconfig <data interface name> 0.0.0.0
+}}}
+{{{
+#!html
+
+<table id="Table_01" border="0" cellpadding="5" cellspacing="0">
+        <tr>
+                <td>
+                        <img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/warning-icon-hi.png?format=raw" width="50" height="50" alt="Warning">
+               </td>
+               <td>
+                    Be extra careful to disable the IP on the data interface, bringing down the IP on the control interface means that you will lose connectivity to your host.
+               </td>
+        </tr>
+</table>
+}}}
+    c. Try again to ping from the client to the server. In the terminal window of the client type:
+{{{
+    ping <server data IP addr> -c 5
+}}}
+       For example:
+{{{
+    ping 10.17.1.2 -c 5
+}}}
+    This time the ping should indicate that the destination is unreachable.
+    d. Start the Layer 2 ping server. In the server terminal window, type:
+    {{{
+  sudo ~/pingPlus-0.2/pingPlusListener <EtherType from worksheet>
+  }}}
+    e. From the client try to ping the server at layer 2. You will need the mac address of the data interface of the server, the name of the data interface of the client, and the !EtherType from your worksheet. In the terminal window of the client, type:
+    {{{
+sudo ~/pingPlus-0.2/pingPlus <server mac> <client i/f name> <EtherType>
+
+where <server mac> is the server's data interface's MAC address, 
+<client i/f name> is the client data interface's name, and
+<EtherType> is the EtherType from the worksheet.
+  }}}
+    The result should look like :
+    {{{
+$ sudo ~/pingPlus-0.2/pingPlus 02:00:9B:48:3E:20 eth3742 10001
+RQ:'5582+2067' to 2:0:9b:48:3e:20.
+RL:5582+2067 from 2:0:3e:15:6c:ab.
+}}}
+
+== 6.  Analyze Experiment ==
+
+Now is when you would ordinarily analyze the results of your experiment.
+
+=== 6.1 Logout of your nodes ===
+
+ * When you are done, CTRL-C in the server window to stop !PingPlusListener.
+ * Then type `exit` in each of your open terminals. 
+
+Congratulations you have run a Layer 2 experiment in GENI!
+
+----
+
+= [wiki:GENIExperimenter/Tutorials/GettingStarted_PartI/Procedure Introduction] =
+= [wiki:GENIExperimenter/Tutorials/GettingStarted_PartI/Procedure/Finish Next:  Finish] =