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000282_news@columbia.edu_Sun Nov 27 02:08:20 1994.msg
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From: jrd@watsun.cc.columbia.edu (Joe R. Doupnik)
Newsgroups: comp.protocols.kermit.misc,indirect.help.slip.ppp
Subject: Re: [?] PPP and MS-DOS Kermit 3.13
Date: 27 Nov 1994 02:08:20 GMT
Organization: Columbia University
Lines: 55
Message-Id: <3b8pmk$kgn@apakabar.cc.columbia.edu>
References: <Czw5Ds.HDH@indirect.com>
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Apparently-To: kermit.misc@watsun.cc.columbia.edu
In article <Czw5Ds.HDH@indirect.com>, Jim Monty <monty@indirect.com> wrote:
>I am able load the PPP packet driver from Merit Network, Inc.
>(etherppp.exe, version 1.9.37 beta) and successfully make a connection to
>my Internet service provider. Once connected, I start MS-DOS Kermit
>3.13, patch level 17, and do this:
>
>MS-Kermit>set port tcp/ip 165.247.1.10
>MS-Kermit>connect
> Resolving address of host 165.247.1.10 ...
>
> Unable to contact the host.
> The host may be down or a gateway may be needed.
>?Cannot start the connection.
>MS-Kermit>set port tcp/ip indirect.com
>MS-Kermit>connect
> Resolving address of host indirect.com ...
> trying name indirect.com
> Cannot read name server 165.247.1.3
> Cannot resolve address of host indirect.com
>?Cannot start the connection
>MS-Kermit>
>
>I _can_ successfully connect using the SLIP driver SLIP8250. Is it not
>possible to use PPP instead of SLIP with MS-DOS Kermit? If it is
>possible, how can I determine what is causing the problem?
>
>Any suggestions or assistance will be greatly appreciated.
------------------
PPP is, um, a Point to Point protocol. Only two stations on such
links, this one and the other one. Thus the only way off the wire is
through the "other one." This in turn implies two important things:
1. ARP doesn't work or even apply because that's a physical layer
broadcast to obtain the physical address of other stations on the wire
(having the same IP "network" number but different IP "host" numbers).
2. All, and that means ALL, stations are reached via the "other
one", and hence the "other one" is the IP Gateway for all outbound traffic.
2 corollary. The IP network is confined to two stations, us and the
"other end." Thus the wire can hold 165.247.1.us and 165.247.1.them and that's
it. All other stations must be on a different IP network number and reached
via the "other end" as a gateway. This includes name servers etc.
The "other end" must be prepared as an IP router, or else you will
need to log into the other end and create a Telnet session there which goes
onward.
I'm happy to hear that you got the Merit PPP driver to work at all.
It hangs my machine during its startup every time I'm tried it, well before
Kermit is started. I have no idea of what's inside that serial driver or
how it really represents itself to programs (it hangs my machine...).
So, I suggest you talk with your service provider about IP numbers
of your link and tell Kermit about the gateway IP number and proper subnet
mask. Nameservers can be anywhere in the world.
Joe D.