Changes between Version 4 and Version 5 of GENIEducation/SampleAssignments/OpenFlowLoadBalancerAssignment/ForInstructors


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Timestamp:
05/31/13 13:56:40 (6 years ago)
Author:
shuang@bbn.com
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  • GENIEducation/SampleAssignments/OpenFlowLoadBalancerAssignment/ForInstructors

    v4 v5  
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    228228 '''Explanation: ''' When the first two new TCP flow arrived, the controller has not got any flow stats from the switch yet, so it directs the two flows to the default path: left. [[BR]]
    229  Starting from the third TCP flow, the controller gets the flow stats and decides to direct the flow to the empty path: right (by default, if there is no flow going through the path, the throughput is 1000000000 Bytes per second. '''Our controller simply forward the new flow to the path with higher throughput since a higher number simply means it is not congested'''). [[BR]]
     229 Starting from the third TCP flow, the controller gets the flow stats and decides to direct the flow to the empty path: right (by default, if there is no flow going through the path, the throughput is 1000000000 Bytes per second. '''Our controller simply forward the new flow to the path with higher throughput since a higher throughput simply means that path is not congested'''). [[BR]]
    230230 Soon the controller figures out that the left path is experiencing congestion by looking at the average per flow throughput (as you can find from the output of the controller). So the controller keeps forwarding any new coming TCP flows to the right path.
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