Changes between Version 18 and Version 19 of GENIEducation/SampleAssignments/OpenFlowAssignment/ExerciseLayout/Execute


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Timestamp:
05/23/13 10:47:03 (6 years ago)
Author:
shuang@bbn.com
Comment:

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  • GENIEducation/SampleAssignments/OpenFlowAssignment/ExerciseLayout/Execute

    v18 v19  
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    300300 
    301   '''Question: Implement your load-balancer.rb, run it on ''switch'', and display the number of bytes and queue length on both left and right node when a decision is made'''[[BR]]
     301  '''Question: Implement your load-balancer.rb, run it on ''switch'', and display the number of bytes and queue length on both left and right node when a new TCP flow comes and path decision is made'''[[BR]]
    302302  '''A sample output should be as follows: [[BR]]'''
    303303{{{
     
    306306so this new flow goes left. Total number of flows on left: 1
    307307}}}
    308  
     308  You can use iperf to generate TCP flows from ''outside'' node to ''inside'' node:
     309 -
     310  - On ''inside'', run:
     311{{{
     312/usr/local/etc/emulab/emulab-iperf -s
     313}}}
     314  - On ''outside'' run the following multiple times, with about 6 seconds interval between each run:
     315{{{
     316/usr/local/etc/emulab/emulab-iperf -c 10.10.10.2 -t 100 &
     317}}}
     318    This will give the ''netinfo.py'' enough time to collect network usage statistics from both left and right node so that the load-balancer can make the right decision.
    309319
    310320  '''If you really do not know where to start, you can find a semi-complete load-balancer.rb [http://www.gpolab.bbn.com/experiment-support/OpenFlowExampleExperiment/load-balancer-hint.rb HERE], you only need to complete the ''next_path'' function that prints out the statistics of each path and returns the path choice''' [[BR]]