This test shows two TCP connections with slightly different propagation delays on the two incoming links. Compared with the test 6, the bottom connection with shorter delay suffers from disproportionate packet drops because of the phase effects. Generic Tahoe.

Expected output:

• The bottom connection with shorter delay receives a disproportionate packet drops due to phase effects.

Test Topology:

 Server ................Router..................Client

        8Mbs 9.5ms
 5(0)------------------0(1)        800kbs 100ms
                            0(0)-----------------7(0)
 6(0)------------------0(2)
        8Mbs 5ms

send window = receive window  =  32 packets

SSF Tcpdump File:

f9_1.tcpdump

f9_2.tcpdump

NS Test with the same parameters

NS tcpdump trace file: f9.tr

Trace Analysis:

The output is  consistent with expected output.