Re: Trace/Loss

[Tiki Suarez <suarez@nu.cs.fsu.edu>]

Chris,

Chris Parsa wrote:

> Hi,
>
> Does anyone know where I can find the code for Trace/Loss ?  I have
> the following code in my script:
>
> #create error model
>  set em [new ErrorModel]
>  $em set rate_ 0.02
>
> set tr [$ns create-trace Loss $f $n0 $n1]
> $em drop-target $tr
>

try
set tr [$ns create-trace Drop $f $n0 $n1]


>
> It runs, and marks all the dropped packets with an "e" in file "f".
> What I don't understand is, it looks like create-trace creates a
> Trace/Loss object, but I cannot find this object.
>
> Also, I don't really understand what $em drop-target $tr does.
>

$em drop-target $tr
places those dropped pkts into a file - check $f - it should be a
file that has been opened.  The packets will be dumped into that file.

>
> Chris

hope this  helps

-- tls