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000109_news@columbia.edu_Tue Aug 8 02:24:08 1995.msg
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From: jrd@cc.usu.edu (Joe Doupnik)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: MSKermit over IP connection
Message-Id: <1995Aug8.082408.58352@cc.usu.edu>
Date: 8 Aug 95 08:24:08 MDT
References: <4073r0$ijs@linda.teleport.com>
Organization: Utah State University
Lines: 46
Apparently-To: kermit.misc@watsun.cc.columbia.edu
In article <4073r0$ijs@linda.teleport.com>, sysone@teleport.com (FIGHT THE POWER) writes:
> Since switching to the 21 May release of KERMIT.EXE with
> patch level 9, I have been unable to telnet to remote hosts. The
> error message: "Unable to ARP resolve gateway www.xxx.yyy.zzz."
> Details...
> My end: Kermit running over either CSLIPPER or EtherPPP,
> using an old DOS box with 640K.
> Server: A Cisco running IOS (tm) 3000 Software, version
> 10.2(1). I don't know the model of the box itself.
> IP addresses: There are two servers, 131.252.129.2{5,6}.
> The gateway is 131.252.129.10. Name resolution doesn't seem to be
> a problem. The netmask used is 255.255.254.0.
> The problem does not occur with this Kermit release if I
> connect to another server (entirely separate from the above) -- a
> Netblazer running SLIP. Furthermore, the 18 January patch level 3
> Kermit has _no_ problems with the Cisco boxes. (Happily that
> version is still available at Columbia's FTP...)
> This is by no means an emergency, but I thought the
> Kermit folks might want to know. If need to change my setup, or
> if I should talk with the people running the Cisco boxes, I would
> appreciate hearing about it. Thanks.
---------
I'm not sure I follow all the details above, but let me take a
stab at matters.
SLIP is a point to point transport mechanism with only two stations
on the wire: this end and "the other end". There is no ARP-ing involved
since ARP is a way of finding one of many stations on the same broadcast
medium (and a serial link isn't a broadcast medium). CSLIPPER is a SLIP
Packet Driver.
Given a point to point architecture "the other end" is responsible
for transporting packets to far away places, and hence it is both a host
and the gateway. Figuring out what to do with packets not addressed to it
is a problem that other end has to deal with. I have no idea of how you
have the Cisco boxes configured. In any case, SLIP has no notion of routing,
gateway, or ARP. Any routing which does occur is a pleasant side effect
of "the other end."
EtherPPP is the MERIT item, I presume. Honestly, I have never been
able to get that program to work in any way; it always hangs my machine as
it starts up. Thus I have nothing useful to suggest for it.
Adding to my confusion on your report is "name resolution doesn't
seem to be a problem." If the nameserver is far away, in the SLIP sense,
then that is no different than trying to reach another machine far away.
Joe D.