Hi everyone, THis is related to tcl more than ns itself. Can anyone please help with running simulation batches. I need to run a set of simulations varying one of the parameters. What kind of script do i write? Or should i write seperate tcl files for each value. Thanks Sunil -- Sunil Gowda School of EECS Washington State University Ph: 509-335-5934 Fax:413-723-0160