Changes between Version 53 and Version 54 of GEC16Agenda/OpenFlow/Instructions/Execute

Timestamp:

03/21/13 05:30:37 (11 years ago)

Author:

nriga@bbn.com

Comment:

--

GEC16Agenda/OpenFlow/Instructions/Execute

@@ -209 +209 @@
 Now let's do a slightly more complicated controller. OpenFlow gives you the power to overwrite fields of your packets at the switch, for example the TCP source or destination port and do port forwarding. You can have clients trying to contact a server at port 5000, and the OpenFlow switch can redirect your traffic to a service listening on port 6000. 
 
-Under the `ext` directory there are two files PortForwarding.py and myPortForwarding.py that are similar like the previous exercise. Both of these controller are configured by a configuration file at `ext/port_forward.config`. 
+Under the `ext` directory there are two files !PortForwarding.py and myPortForwarding.py that are similar like the previous exercise. Both of these controller are configured by a configuration file at `ext/port_forward.config`. 
 
 To run the controller do (while at /local/pox directory)
@@ -241 +241 @@
 
 == Run a server proxy Controller ==
+As our last exercise, instead of diverging the traffic to a different server running on the same host, we will diverge the traffic to a server running on a different host and on a different port. 
+
+Under the `ext` directory there are two files Proxy.py and myProxy.py that are similar like the previous exercise. Both of these controllers are configured by a configuration file at `ext/proxy.config`. 
+  
+  1. On the terminal of `host3` run a netcat server:
+  {{{
+  nc -l 7000
+  }}}
+  2. On your OVS host open the server_deflection.py file, and edit it to implement a controller that will diverge traffic destined for `host2` to `host3`. Before you start implementing think about what are the side effects of diverging traffic to a different host. 
+     * Is it enough to just change the IP address? 
+     * Is it enough to just modify the TCP packets? 
+   If you want to see the solution, its in file server_deflection_sol.py file.  
+  3. To test your controller run: 
+  {{{
+  ./pox.py --verbose myProxy.py
+  }}}
+  6. Go back to the terminal of `host1` and try to connect to `host2` port 5000
+  {{{
+  nc 10.10.1.2 5000
+  }}}
+  If your controller works correctly you should see your text showing up on the terminal of `host3`.