[ns] Help - Tracing TCP & DSR Variables

[Ankit Agarwal]

Hi Everyone,

I am a new to NS2 and am using it to simulate a mobile
wireless ad hoc network running on DSR.

I want to trace certain TCP variables such as
Congestion Window (cwnd_), Round trip time (rtt_),
etc.

I came across some information in the NS manual that
said I could do this using the following script:
(3.4.3 Variable Tracing)

$tcp trace cwnd_

set tracer [new Trace/Var]
$tcp trace ssthresh_ \$tracer

However, I do not get any trace output for this. The
simulation does not generate any errors either.

I think that I am probably using this script wrong.

Would someone be able to help me with this? I would
appreciate a sample script or some pointers on how to
use this script correctly.

Further, could the trace be directed to an output file
and if so then how?

I am also trying to trace the route that is part of
the DSR packet header. Is there some way that the
route contained in a DSR packet header can be dumped
to a file?

Thank you,

Ankit Agarwal.


=====
"Tough times do not last, only tough people do."
"A ship in the harbor is safe...but thats not what ships were made for."
"Do, or do not. There is no try." (Yoda)
Ankit Agarwal
5000 Oak Street, #815, Kansas City, MO 64112.
Telephone: (816) 531-4186. Email: ankit_agarwal@yahoo.com

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