Four new tests illustrate and validate the new "gentle_" parameter added to RED.  These tests can be run with thefollowing commands:../../ns test-suite-red.tcl ungentle../../ns test-suite-red.tcl gentle../../ns test-suite-red.tcl ungentleBadParams../../ns test-suite-red.tcl gentleBadParamsThe "gentle_" parameter implements a suggestion froman October 1997 email on "Optimum functions for computing the dropprobability" available from "http://www.aciri.org/floyd/REDfunc.txt".From the ns man page on "gentle_": Set to true to increase the packet drop rate slowly from max_p to 1 as the average queue size ranges from maxthresh to twice maxthresh. The default is set to false, and max_p increases abruptly from max_p to 1 when the average queue size exceeds maxthresh.The first two tests compare the behavior of RED with "gentle_"set to false, and to true, with the default RED parameters.There is very little difference between the two tests.The next two tests compare the behavior of RED with "gentle_"set to false, and to true, with a less-optimal setting ofthe RED parameters.  (E.g., with "max_p" set to 0.02 instead ofto 0.1.)  These two tests show that with "gentle_" set to true,RED gives more robust performance with less-optimal settings ofthe RED parameters.I will try to add other proposed RED modifications to theNS distribution as my spare time permits...