Specialization Software-defined Networking (Winter 2015/2016): Difference between revisions

Specialization Software-defined Networking (Winter 2015/2016) (view source)

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 ** Short report on the group discussion papers
 ** Report on the paper presented by team-X for the final presentation
+== Exercises ==
+* [https://openflow.stanford.edu/display/ONL/POX+Wiki Pox/Openflow Tutorial]
+* What to Submit: source code along with screenshots for those who are not exempted
+=== 21 March ===
+* Exercise I: Data Centers [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/1.Data_centers.zip] (exempt: all)
+* Exercise II: Fattree and Generic [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/2.Datacenter_fattree_and_loadbalancing.zip] (exempt: Guryash, Sameer)
+=== 22 March ===
+* Exercise III: Load balancers (contd. exercise II) [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/2.Datacenter_fattree_and_loadbalancing.zip] (Exempt: All except Thomas)
+* Exercise IV: Firewall [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/3.Firewall.zip] (Exempt: All except Thomas, Gurjinder)
+=== 23 March ===
+* Exercise V: Firewall (contd. ) [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/3.Firewall.zip] (Exempt: ALL)
+* Exercise VI: Pyretic firewall [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/4.pyretic_firewall.zip] (Exempt: Khawar, Omar, Martin, Thomas, Sameer, Eeran)
+=== 24 March ===
+* Exercise VII: Kinetic Firewall [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/Exercises/kinetic.pdf Instructions], [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/Exercises/kinetic_gardenwall.py Starting_Code]
+(Exempt: Khawar, Omar, Martin, Thomas, Sameer, Eeran)
+* Exercise VIII: Kinetic like firewall using pox [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/Exercises/pox_gardenwall.pdf instructions] [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/Exercises/pox_gardenwall.py Starting_Code][https://openflow.stanford.edu/display/ONL/POX+Wiki#POXWiki-ofp_flow_mod-Flowtablemodification Tutorial]
+(Exempt: Khawar, Omar, Martin, Thomas, Sameer, Eeran)
+=== 25 March ===
+* Exercise IX: Pyretic Debugging (Exempt: Omar, Martin, Thomas, Sameer, Eeran)
+'''HINT:''' You might have to use the "$ dpctl dump-flows tcp:127.0.0.1:6634" or "mininet> dpctl dump-flows" command frequently.
+** In this debugging exercise, we take solutions available in the Internet for the gardenwall problem and try to fix bugs in it.
+** 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_internetsolution1.py], test if it is able to block h1 when "infected". Note that we will only use the "infected == True" for this exercise.
+*** Copy the above code into /home/mininet/pyretic/pyretic/examples as gardenwall_internetsolution.py
+*** start controller (in /home/mininet/pyretic folder): pyretic.py pyretic.examples.gardenwall_internetsolution
+*** start mininet: sudo mn --controller=remote --topo=single,3 --mac --arp
+*** check h1 ping h2
+*** Now infect h1 (in /home/mininet/pyretic/pyretic/kinetic folder): python json_sender.py -n infected -l True --flow="{srcmac=00:00:00:00:00:01}" -a 127.0.0.1 -p 50001
+*** check h1 ping h2. We should be able to observe that this traffic is blocked.
+*** Now, we move on to the debugging part
+**** check h2 ping h3, what happens?
+**** Now, modify the given code to allow h2 traffic to pass through to h3, when h1 is "infected".
+** Now, check if the "exempt" case is working fine too
+** if time permits, check and improve code to allow h1 to ping h2
+** If time permits, try fixing [https://dl.dropboxusercontent.com/u/1652374/SDN_Course/Exercises/pyretic_gardenwall_internetsolution.py this] code for the "infected" case.
 [[Category:Courses]]