Path: utzoo!attcan!uunet!cs.utexas.edu!tut.cis.ohio-state.edu!husc6!rice!uw-beaver!blake!oregon!jqj
From: jqj@oregon.uoregon.edu (JQ Johnson)
Newsgroups: comp.dcom.modems
Subject: Re: SLIP compression...
Message-ID: <5108@oregon.uoregon.edu>
Date: 8 Jul 89 23:31:10 GMT
References: <340@larouch.UUCP>
Followup-To: comp.unix.wizards
Organization: University of Oregon
Lines: 13

In article <340@larouch.UUCP>, jparnas@larouch.UUCP (Jacob Parnas) writes:
> I recently got SLIP going (4.3BSD), and while pleased with its function,
> I still long for better performance even with V.32 modems.  The obvious
> thing to do is add compression.

One possible place to put compression is in the modem itself.  For example,
when I got my TB T2500s to set up a SLIP connection the package included
the announcement that Telebit planned to (but didn't yet) support MNP.5
in V.32 mode.  Does anyone have any experience with SLIP performance using
the standard hardware-based compression algorithms (MNP.5, V.42 or whatever)?
It clearly won't do as good a job on IP headers as VJ's algorithm, but it
also doesn't require hacking SLIP code for which you might only have
binaries.