Specialization Software-defined Networking (Winter 2014/2015): Difference between revisions

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=== 27 March ===
=== 27 March ===
* Exercise IX: Debugging
* Exercise IX: Pyretic Debugging
 
** We have done kinetic firewall in exercise VII and imitated the same firewall using pox in exercise VIII. Now, we will imitate the same firewall using pyretic.  
** We have done kinetic firewall in exercise VII and imitated the same firewall using pox in exercise VIII. Now, we will imitate the same firewall using pyretic.  


** The basic solution is taken from the Internet [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/Exercises/pyretic_gardenwall_internetsolution.py], test if it is able to block h1 when "infected". Note that we will only use the "infected == True" for this exercise.
** The basic solution is taken from the Internet [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/Exercises/pyretic_gardenwall_internetsolution.py], test if it is able to block h1 when "infected". Note that we will only use the "infected == True" for this exercise.
*** start controller (in /home/mininet/pyretic folder): pyretic.py pyretic.examples.gardenwall_internetcode
*** start controller (in /home/mininet/pyretic folder): pyretic.py pyretic.examples.gardenwall_internetcode
*** start mininet: sudo mn --controller=remote --topo=single,3 --mac --arp
*** start mininet: sudo mn --controller=remote --topo=single,3 --mac --arp
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** Now, we move on to the debugging part
** Now, we move on to the debugging part
*** check h2 ping h3, what happens?  
*** check h2 ping h3, what happens?  
*** Now, modify the given code to allow h2 traffic to pass through to h3
*** Now, modify the given code to allow h2 traffic to pass through to h3
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