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000002_news@newsmaster….columbia.edu _Mon Sep 29 15:50:56 1997.msg
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From: Vladimir Alexiev <vladimir@cs.ualberta.ca>
Newsgroups: comp.protocols.kermit.misc
Subject: Re: Kermit via PPP under DOS?
Date: 29 Sep 1997 13:34:34 -0600
Organization: University of Alberta, Computing Science
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Message-ID: <ombu1b9anp.fsf@tees.cs.ualberta.ca>
References: <60dt7d$dj2@f1n1.spenet.wfu.edu>
<om202d9uht.fsf@tees.cs.ualberta.ca> <60hrre$t7q$1@news3.voicenet.com>
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In-reply-to: cmosley@voicenet.com's message of 27 Sep 1997 02:42:54 GMT
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In article <60hrre$t7q$1@news3.voicenet.com> cmosley@voicenet.com (Christopher Mosley) writes:
> Yes, pktmux in combination with cslipper. I don't think dosppp uses
> compression?
It doesn't have VJ header compression, yes. But I'm not sure if that's the
only kind of compression that PPP supports. The main benefit of PPP to SLIP is
that it's more robust, not more efficient.
In any case the choice of PPP or SLIP is already made for you by your ISP :-)
> (slirp can be used if you have a shell account and don't have cslip)
If you have a shell account, why would you want to use SLIP for kermit anyway?
> can be used to run mskermit as a telnet concurrently with winsock
> applications.
Once you have any kind of packet driver and/or emulation (no matter SLIP or
PPP), you can put two stacks (kermit's and winsock) on top of the driver,
using pktmux. With some provisos, of course.
> kermit and cslipper makes a great telnet for arachne .
Yes, if you use TCP/IP applications, then there is sense in putting a SLIP/PPP
emulator on top of a shell connection, and using Kermit over that TCP/IP link.
BTW, the emulator that's more commonly used than SLiRP is TIA. TIA has both
SLIP and PPP emulation.
> Why not use the best instead of what is supplied.
Agreed. But one should also understand the tradeoffs between different
protocols and protocol driver implementations. Eg PPP is more robust; SLIP may
be more parsimonious; EtherPPP supports VJ compression but is bulkier than
DOSPPP.
> It is somewhat surprising to find that dosppp will not work out of the box
> for kermit telnet in arachne but dosppp works quite well with _other_ wattcp
> based programs.
PPPD (class 6 driver) works out of the box, EPPPD (class 1 driver) doesn't.