Re:TCP/IP Simulation of a connection

Bill Woodland (wcw@bga.com)
Mon, 20 May 1996 19:38:25 -0500


>Date: Mon, 20 May 1996 13:08:27 +0100
>Reply-To: borreri.c@iol.it
>Sender: owner-CU-SEEME-L@cornell.edu
>From: borreri.c@iol.it (Carlo Borreri)
>To: <CU-SEEME-L@cornell.edu>
>Subject: TCP/IP Simulation of a connection
>X-Sender: borreri.c@popmail.iol.it
>X-PH: V4.1@cornell.edu (Cornell Modified)
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>
>Hello to everybody,
>
>a big question:
>
>It is possible to simulate a TCP/IP connection using
>2 pc (connected by a network or a serial or...) in order
>to test a software like Cu-SeeMe or FreeVue, without
>spend a lot of money (i.e. in Italy the innternet access
>is still very expensive).
>What is necessary to do ? (if possible using Windows 95 or
>in the worst case with Win NT 3.51 workstation).
>
>Thanks and best regards
>
>
>
>Borreri Carlo
>
>"Create like a God, Command like a King, and Work like a slave"
>
>R & D Office
>Maselli Misure s.p.a.
>Via Baganza 4/3
>43100 Parma - ITALY
>
>e-mail: borreri.c@iol.it
>
>
>
>

Here is what Grant Newland had to say about how to do this before he left
the mailing list:

>Date: Mon, 22 Jan 1996 21:56:29 -0600
>Reply-To: star@gvi.net
>Sender: owner-CU-SEEME-L@cornell.edu
>From: star@gvi.net (Grant Newland)
>To: <CU-SEEME-L@cornell.edu>
>Subject: NOT possible? 2 PC's? C'moooooonnnnn
>X-To: cu-seeme-l@cornell.edu
>X-Sender: star@gvi.net
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>X-Listprocessor-Version: 7.2(a) -- ListProcessor by CREN
>
>> From: "John R. Haggis" <haggis@cesium.com>
>> Ravi,
>>
>> It is NOT possible to connect 2 PC's directly for CuSeeMe in its current
state
>
>I have done this both dialing one to the other directly, and, through a
>serial cable between two PC's on a desk. I used Trumpet Winsock 2.0b,
>although any version can do it. Setup Winsock with a false IP address,
>and remove the name server address and domain name entries (make them
>blank). Make sure both ends have identical values and port bit rates.
>
>For a serial cable test, confirm the serial link works first with Comit or
>terminal on each end, you should get NO local echo of characters, only
>on the opposite end should they show. For modem to modem, set one
>of the Winsocks to manual dial, and enter the auto answer command
>(ats0=1), then escape to PPP or SLIP again. The other side dials.
>
>Once both sides are in PPP or SLIP, one CUSM can connect to the false
>IP address given to the other side. No name server queries are made, and
>PPP client to client works.
>
>One thing to remember, the maximum transmit rate on side A is controlled
>by the setting on side B for minimum transmit rate, and this must be set
>to a high value before the CUSM connection is made. I don't know why,
>but it's the truth.
>
>There's no other mysteries to doing this. It's a valuable test for determining
>what affects what.
>
>Grant
>
>P.S. I have 97 mail messages in one day from this thing, I will have to
>back out after this evening. I am always available by direct e-mail.
>Good luck all !!
>
>
>

Bill Woodland (wcw@bga.com)
Squeek on Undernet IRC
Channel Manager #CU-SeeMe
PC only, no MAC questions, please.
http://www.realtime.com/~wcw/