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RE: [ns] packet type in the common header



	> -----Original Message-----
	> From:	Sergio Andreozzi [SMTP:[email protected]]
	> Sent:	Tuesday, July 31, 2001 3:01 PM
	> To:	Alvaro Armenta
	> Cc:	Ns-Users@Isi. Edu
	> Subject:	RE: [ns] packet type in the common header
	> 
	> > I changed the webtraffic packet type in the tcp-full.cc to HTTP
	> 
	> I'm quite confused about the use of packet type field in the common packet
	> header. Http application fills it with PT_TCP and telnet and ftp as well.
	> Cbr traffic fills it has PT_CBR even if it uses udp agent. Realaudio uses
	> PT_REALAUDIO and so on.
	> 
	> In some case the transport protocol is used, in some other the application
	> protocol or application type. Why not use two fields, one for application
	> protocol, one other for transport protocol? It would be more clear.

	I completely agree.
	These kind of things make ns not-so-easy to understand.
	Is there actually somewhere a ns cvs-server ?
	 
	> If I have a http server and a ftp agent on the same node, how can I
	> distinguish packets? It seems port numbers are not used. Am I wrong?
	> 
	> Sergio

	/me also wants to know...

	Bye
	Alex