TCP-FACK not seem to work

[Ioannis Pavlidis <ioannis+@andrew.cmu.edu>]

Hi,

We have a simple tcl script having an ftp source above an Agent/TCP/Fack.
The sink is Agent/TCPSink/Sack1.

We start the simulation and this ends immediatelly...

We are tracing the cwnd and srrt parameters and in the trace file only
two lines appear (one for each the above parameters).

Has anyone tried using TCP-FACK in ns?

Any help will be highly appreciated.

Regards,

Yannis Pavlidis.

Masters Student
Information Networking Institute
Carnegie Mellon University