Re: [ns] Simple emulation script for RedHat Linux

[Alefiya Hussain <alefiyah@rumi.usc.edu>]

Most of the emulation code does not have the nam trace objects and
hence you donot see any message in the nam file .

nse uses the pcap library and hence the filters rules are the same as
tcpdump. Use "man tcpdump" for filter rules.

i hope this helps.
alefiya


On Fri, 26 Oct 2001, Jason K. Douglas wrote:

> I have been trying to create/modify an emulations script for ns on RedHat
> 7.1.  I started with emping.tcl and modified it to connect to eth0 instead of
> fxp0.  When I run the script and ping myself a few times, the nam trace file
> contains no messages.  Am I setting something up incorrectly?  Has anyone
> successfully executed an emulation script on RedHat (or other) Linux
> recently?  I'm unfamiliar with any methods to debug the script to see if the
> messages are being dropped.
>
> Also, where can I find documentation on BPF syntax?  The only clue I have to
> create my own filter is from the emulation sample scripts.
>
> If you need to see the script, or anything else, please ask.  I need to get
> this realtime live network simulation running very soon...
>
> Thanks,
> Jason
>