[tg] Regarding the many to one traffic flow

[Barbara Denny]

Please look at the relevant RFCs for the definition
(go to www.ietf.org). This list is for questions on
TG.

barbara

--- sachin <sachinls@netsys.kaist.ac.kr> wrote:
> Can you please give the packet format (header) for
> both UDP and TCP?
> ----- Original Message -----
> From: "Barbara Denny" <b_a_denny@yahoo.com>
> To: "sachin" <sachinls@netsys.kaist.ac.kr>; "Venkata
> Pingali"
> <pingali@ISI.EDU>
> Cc: "Barbara Denny" <b_a_denny@yahoo.com>;
> <tg@postel.org>
> Sent: Thursday, January 09, 2003 1:15 AM
> Subject: Re: [tg] Regarding the many to one traffic
> flow
> 
> 
> > Hi,
> >
> > The TCP/UDP you get is dependent on what the
> operating
> > system supplies.  TG does not do anything special
> > regarding transport protocols unless you have
> added
> > one of your own to TG. It makes socket calls to
> the
> > kernel to get whatever support it needs for these
> > protocols.
> >
> > barbara
> > --- sachin <sachinls@netsys.kaist.ac.kr> wrote:
> > > 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
> > > > > > > >
> 
=== message truncated ===
P

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