[tg] Regarding the many to one traffic flow

[sachin]

Hi,

I have two more questions regarding TG.

1. To what degree TG can immulate TCP protocol. Will the traffic be
dependent on congestion of the network for TCP and will the sndwin be
changed based on the congestion. Is it a closed loop system that has been
implimented in TG or is it the open loop system unlike actual TCP?

2. Another thing is what is the packet format for UDP and TCP generated by
TG?

Sachin

----- Original Message -----
From: "Venkata Pingali" <pingali@ISI.EDU>
To: "sachin" <sachinls@netsys.kaist.ac.kr>
Cc: "Barbara Denny" <b_a_denny@yahoo.com>; <tg@postel.org>
Sent: Wednesday, January 08, 2003 9:45 AM
Subject: Re: [tg] Regarding the many to one traffic flow


> Hi,
>
> I looked at the script, and  looks like the script will be have to be
> extended to support multiple sources explicitly.
>
> One way to get around the limitation is to use multiple sinks (i.e., have
> multiple 1-1 connections).
>
> Venkata
>
> On Tue, 7 Jan 2003, sachin wrote:
> > Well, Thank you guys for helping out. Well I have simulated many to one
> > traffic scenario. Its works as expected and the log file in sink machine
> > also supports the fact.
> >
> > Now the problem is how can I generate files from gengraph.pl with many
> > client files and only one source file. If I try to cross each client
file
> > with the source file then it works with an warning and i have ill
feeling
> > the file so generated is never a valid one. So please help me out in
this.
> >
> > Sachin
> > ----- Original Message -----
> > From: "sachin" <sachinls@netsys.kaist.ac.kr>
> > To: "Venkata Pingali" <pingali@ISI.EDU>
> > Cc: "Barbara Denny" <b_a_denny@yahoo.com>; <tg@postel.org>
> > Sent: Tuesday, January 07, 2003 4:57 PM
> > Subject: Re: [tg] data rate
> >
> >
> > > Thank you,
> > >
> > > I have attached the files. The attachment contains log and well as
dcat'd
> > > files. I have send log files to get further information regarding the
use
> > of
> > > gengraph.pl
> > >
> > > I have used one of the source files to get a stats.xpl (default name).
I
> > > wanted to view this file with the help of gnuplot and xplot. Well
these
> > > tools are installed in my windows machine. But non of these can read
the
> > > file format. Can you please tell me where I went wrong.
> > >
> > > Sachin
> > > ----- Original Message -----
> > > From: "Venkata Pingali" <pingali@ISI.EDU>
> > > To: "sachin" <sachinls@netsys.kaist.ac.kr>
> > > Cc: "Barbara Denny" <b_a_denny@yahoo.com>; <tg@postel.org>
> > > Sent: Tuesday, January 07, 2003 4:08 PM
> > > Subject: Re: [tg] data rate
> > >
> > >
> > > >
> > > > There is nothing fundamentally stopping one from running multiple
> > sources
> > > > provided it is within resource limits of the host. TG can accept
> > multiple
> > > > connections simultaneously. can you please send me the input tg
files
> > and
> > > > the log file (or its dcat'd output) to my private email address?  I
will
> > > > see if those files give me a hint.
> > > >
> > > > thanks.
> > > > Venkata
> > > >
> > > > On Tue, 7 Jan 2003, sachin wrote:
> > > > > Thank you.
> > > > >
> > > > > Is it possible to run more than 1 TG source in a single machine.
Well
> > I
> > > have
> > > > > tried it here. But the sink seems to accept packets from one
source
> > and
> > > then
> > > > > as this source stops transmitting it goes for another source. I
have
> > > > > realized this from the log file of the sink.
> > > > >
> > > > > Well my intention is to generate four concurrent traffic streams
and
> > > feed
> > > > > them into IXP machine (which will be working as router) and will
be
> > > using
> > > > > single sink.
> > > > >
> > > > > sachin
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Barbara Denny" <b_a_denny@yahoo.com>
> > > > > To: "sachin" <sachinls@netsys.kaist.ac.kr>; <tg@postel.org>
> > > > > Sent: Tuesday, January 07, 2003 2:47 PM
> > > > > Subject: Re: [tg] data rate
> > > > >
> > > > >
> > > > > > The specification of the interarrival rate plus
> > > > > > the packet size gives you the data rate.
> > > > > >
> > > > > > barbara
> > > > > >
> > > > > > --- sachin <sachinls@netsys.kaist.ac.kr> wrote:
> > > > > > > Hi,
> > > > > > >
> > > > > > > I forgot to add one more query in the last email.
> > > > > > > How can we explicitly give the data rate for
> > > > > > > transmission. Well if there is no such provision how
> > > > > > > are we suppose to provide data rate.
> > > > > > >
> > > > > > > Sachin
> > > > > > >
> > > > > >
> > > > > >
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