Re: [ns] Packet Header

["sandry@iol.it"<sandry@iol.it>]

I have read the previous discussions on how ns usually doesn't simulate
header overhead. My impression is that I have to enable the use of all
headers of my interest and I have to give my agent the capability of
fill the fields of the header that it have to use in each situation.
But, if so, this is a great limit of simulator: in fact, I cannot
simulate the gain of using compressed packets, because the simulator
simulates that all packets have all fields of all headers I have
enabled. In other words, I cannot see what happens when my agent sends
compressed packets, because all packet has non only the fields of
compressed headers, but also the fields of all other headers.
I'm right?

Sandro Petrizzelli


> Please read all previous discussion of how ns usually doesn't simulate
> header overhead. At all.
> 
> You might get somewhere by hacking FullTcp and tweaking the
> packet size to simulate changes in header overhead.
> 
> L.
> 
> On Fri, 20 Apr 2001, sandry@iol.it wrote:
> 
> > Hi all,
> > I posted a previously question but I have not found any answer, so I
try
> > again.
> > I want to create an agent that, on the same connection with the same
> > destination agent, sometimes sends classic IP packets and sometimes
> > sends another type of packets (i.e. ROHC compressed packets), that
> > doesn't include any kind of IP fields. Is it possibile?
> 
> <L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>
> 
>