The older November 1995 tech report contains some additional material. An earlier version of this paper appeared in ACM SIGCOMM 95, August 1995, pp. 342-356.
The simulations for this paper were not run on the NS simulator, but on a separate simulator that I wrote for this purpose, that I never made publically available. Thus, the scripts for running the simulations in this paper are also not publically available. However, SRM functionality has now been added to NS.