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Re: [ns] need your help
Hi Sean,
Thanks a lot.
-Vijay
>From: HEI Xiaojun
>To: Vijay D
>CC: [email protected], [email protected], [email protected]
>Subject: Re: [ns] need your help
>Date: Fri, 13 Jul 2001 11:25:55 +0800
>
>hi, Vijay
>
>Please refer to sally's post in May.
>
>http://www.isi.edu/nsnam/archive/ns-users/webarch/current/msg01999.html
>
>sean
>
>Vijay D wrote:
>
> >
> >
> > Hi John,
> >
> > I understand what you said, but I only wanted to understand, the
> > rational behind choosing one value over another.
> >
> > -Vijay>From: John Mehringer
> > >To: Vijay D
> > >CC: [email protected], [email protected]
> > >Subject: Re: [ns] need your help
> > >Date: Thu, 12 Jul 2001 17:07:08 -0700
> > >
> > >Hi,
> > >
> > >If you want to have consistant default values across ns releases you
> > can
> > >always set the variables to TCP in your scripts explictly. That way
> > you
> > >know what the values will be and not have to worry if the defaults
> > >change.
> > >
> > >- John Mehringer
> > >
> > >Vijay D wrote:
> > > >
> > > > 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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