[ns] A question about ROHC implementation (from Italy)

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

Hi all,
I have to simulate, in ns, ROHC scheme for compressing headers; so, I have
to create a new packet header (ROHC header) and a new agent (Agent/ROHC)
that utilizes either this new packet header or the "traditional" IP, TCP,
RTP and UDP header; thus, I have to enable the use of ROHC headers and also
of "traditional" headers, also if, in many trasmissions (simulated), my
agent don't sends these headers, but only ROHC headers. In other words, for
the purpose of ROHC scheme, during the same connection the source often
sends ROHC headers but sometimes sends also "traditional" headers. My
question is: the program simulates that every packet carries all the headers
I have enabled (and this is wrong for me) or it follows the correct scheme,
that is many packets carrie only the ROHC header and some other packets
carry "traditional" headers? In the first case, I will have a great problem
for my simulations !!
Best regards

Sandro Petrizzelli
(http://users.iol.it/sandry)