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Strange behavior in CBQ for Reno TCP traffic




 Hi,
	I was running couple of CBQ simulations, this is the senirio

1) A flat tree structure with classes

Data 62,2     source FTP over TCP/Reno 
Audio 3,1     source CBR size 190, at 1 ms interval
Video 32,1    source CBE size 500, at 2 ms interval

This is same as cbqWRR test case in the validation test cases, expect for
FTP traffic replacing data (CBR) traffic.

Now with one ftp session the simulation looks OK, with 2 ftp session the
FTP traffic is more flucating, and with 3 ftp session the total ftp
throughput reduces to almost zero at around 30 second.

Has anybody experienced this kind of behavior, is there any pitfall in
what I am doing.

-Chetan S