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“K16304” — 2012/11/19 — 9:15
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32
Fault Tolerance
the edge links have 100Mbps bandwidth and 10ms one-way delay. Thus, the end-to-
end RTT on either path is 90ms, which is a reasonable RTT within the continental
United States.
We simulate a 4MB file transfer with three input parameters for each simulation:
(1) the primary path’s loss rate, (2) the alternate path’s loss rate, and (3) one of the
three retransmission policies. Each parameter set is simulated with 60 different seeds.
We found 60 seeds to be sufficient for obtaining a 90% confidence interval.
Results
Figure 2.6 illustrates the results for {3,5, 8}% primary path loss rates. For each graph
in Figure 2.6, the alternate path’s loss rate is varied on the x-axis, ranging from 0-
10%. The graphs ...