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TCP/IP Stack Question

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Ashish Bhargava

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Aug 4, 1996, 3:00:00 AM8/4/96
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Hi ,

I have a TCP/IP stack question.


Background:

There is an application( say, A) which runs on Windows 3.11 and Win 95.
This application(A) includes a modem dialer and netscape navigator to
register new internet users. The application(A) connects to a Netscape
registration server using the modem, then negotiating a PPP connection
over TCP/IP, using a PPP winsock.dll (SHIVA is the supplier).

The problem comes on the Win 3.11 platform when another application(B)
tries to communicate to the PC using TCP/IP ether and the Win 3.11
application(A) tries to communicate using TCP/IP PPP. The winsock.dll
gets confused and stops talking to either network.


Question:
Is there a TCP/IP stack that is smart enough to talk to both network at the
same time, like a TCP/IP ether and PPP router?

Will this(stack) work on the Win NT and Win 95 platforms?


Please mail me at abha...@mtu.edu if you have any suggestions or
ideas. Any help will be greatly appreciated. Thanks in advance.

Ashish

--

Gordon McAndrew

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Aug 5, 1996, 3:00:00 AM8/5/96
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abha...@mtu.edu (Ashish Bhargava) wrote:

;>Hi ,
;>

;>
;>Question:


;>Is there a TCP/IP stack that is smart enough to talk to both network at
the
;>same time, like a TCP/IP ether and PPP router?
;>
;>Will this(stack) work on the Win NT and Win 95 platforms?

I don't know about WFWG stacks but the one that comes with Win95 is able to
use both links at the same time.

Gordon McAndrew
Vegreville,
Alberta, Canada
gmca...@aec.env.gov.ab.ca Home
gor...@aec.env.gov.ab.ca Office


Linwood Ferguson

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Aug 5, 1996, 3:00:00 AM8/5/96
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In article <4u3q9t$i...@rover.ucs.ualberta.ca>, gmca...@aec.env.gov.ab.ca
says...

>
>abha...@mtu.edu (Ashish Bhargava) wrote:
>
>;>Hi ,
>;>
>
>;>
>;>Question:
>;>Is there a TCP/IP stack that is smart enough to talk to both network at
>the
>;>same time, like a TCP/IP ether and PPP router?
>;>
>;>Will this(stack) work on the Win NT and Win 95 platforms?
>
>I don't know about WFWG stacks but the one that comes with Win95 is able to
>use both links at the same time.
>

And I don't know about W95 but WNT is also.

However, in all such cases you are going to be dealing with a routing
problem, and you have to have your addresses set up properly, and depending
on how the connection is established, what versions of which software you
use, you might need to manually set up some routes.

And if you do not have your addresses set up properly you will not get
connectivity. E.g. if you use the same subnet for the PPP connection as your
NIC connection it is unlikely to work.

If you plan to route *through* the PC making the PPP connection, I believe
you need WNT. E.g. if B dials into C, and A connects via a LAN to B and
wants to use that dialup connectino to talk to C, I think B must be an NT
(haven't tried it, but have read that W95 can't do IP forwarding).

--
Linwood Ferguson e-mail: ferg...@mag.aramark.com
Mgr. Software Engineering Voice: (US) 540/967-0087
ARAMARK Mag & Book Services


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