random number generator

[Fusun Inanc <fusun@poptop.ee.psu.edu>]

Hi all,

I need to generate random numbers in my simulation.. I used following commands:

set random1 [new RandomVariable/Uniform]
$random1 set min_ 0.0
$random1 set max_ 1.0
set start1 [$random1 value]

$ns at $start1 "$ftp1 start"
puts "start1 = $start1"


for each ftp nodes. But when I run the simulation it generates random numbers 
for each nodes but when I run it again it finds the same values ...

For example...

fusun%poptop [19] ns as.tcl
start1 = 2.189592e-01
start2 = 4.704462e-02
start3 = 6.788647e-01
start4 = 6.792964e-01
start5 = 9.346929e-01
fusun%poptop [20] ns as.tcl
start1 = 2.189592e-01
start2 = 4.704462e-02
start3 = 6.788647e-01
start4 = 6.792964e-01
start5 = 9.346929e-01
fusun%poptop [21] 

What I want is every time when I run the simulation It has to find different 
numbers then previous ones.

Thanks in advance..

Fusun Inanc