[ns] Simple emulation script for RedHat Linux
Fri, 26 Oct 2001 03:10:17 -0700 (PDT)
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.
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...