Hi, I am using a token bucket filter in ns-2.1b5. I set the queue length of the filter to zero. As per the code in file tbf.cc, it is supposed to drop packets if queue length (qlen_) is set to zero. I do not see any packet drops. Please help me if I was doing any mistake or if some one was awre of the problem. Any suggestions will be appreciated. Thanks in advance. Regards, Syam