[ns] need your help

["Vijay D" <vjragh@hotmail.com>]

Hi,

  I recently installed ns-2.1b8a for windows 2000. I found that my results were very different from my previous results obtained from simulations done in sun-solaris with ns-2.1b7a. I didn't take any of your patches into ns-2.1b7a. I feel that, your changes to few default values does have an impact on the performance of TCP. So I want to understand, what setting I need to use (and why), which will closely emulate the commercially available TCP and FTP stacks. These are the following changes that I encountered in ns-default.tcl, from the previous version,

Agent/TCP set windowInit_ 2 ;          # default changed on 2001/5/26.

Agent/TCP set syn_ true ;              # default changed on 2001/5/17.

Agent/TCP set minrto_ 1 ;              # Default set to 1 on 2001/05/14.
                                                     # Set to "0" to give old behavior.

Agent/TCP set timerfix_ true ;         # Variable added on 2001/05/11
                                                     # Set to "false" to give the old
                                                      #  behavior.

Agent/TCP set delay_growth_ true ;             # default changed on 2001/5/17.

 

Can you please help me on this ? Also is there any other changes TCP or FTP stack that I should be aware of  ?

 

Thank you very much,

Vijay

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