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From: nerd@percival.rain.com (Michael Galassi)
Newsgroups: comp.sys.next
Subject: Re: notes for people installing NeXT SLIP
Message-ID: <1991Jun28.143819.2188@percy.rain.com>
Date: 28 Jun 91 14:38:19 GMT
References: <1991Jun27.071351.17884@milton.u.washington.edu> <1991Jun27.124556.27545@ni.umd.edu>
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louie@sayshell.umd.edu (Louis A. Mamakos) writes:

>In article <1991Jun27.071351.17884@milton.u.washington.edu> mrc@cac.washington.edu (Mark Crispin) writes:
>>     2) Your modems *must* be hardware flow controlled.  This means no
>>Mac modem cables. 

>I'm surpised to hear this.  I'm using a non-hardware flow controlled
>connection to my modem at 9600 BPS, and it has worked just fine.  On
>the other hand, it is NOT a Mac cable because it has DTR and CD
>correctly wired.

You need hardware flow control any time you don't know the actual
throughput of your modem.  This will be the case with any v42bis
(LAPM) or mnp5 modem where the data stream is compressed and the
compression ratio is a function of the data (i.e. varies over time).

Many of the newer v32, v32bis, and v24bis modems support v42bis data
compression which is a real boon for slip throughput when highly
compressible data is being transferred though our experience on
RAINet (Portland, OR's MetroNet) is that response time (i.e. ping/
echo/et all) are not heavily affected.

>>     3) To make sure the slip line is seen by anyone else, make sure
>>that the gateway machine is running routed with the -s option.  The
>>NeXT-supplied /etc/rc does not specify -s so you will need to add it.

>This is very much a site specific option, and one of many solutions.
>At our site, this won't work because of how the routing is configured
>and who believes what.  Again, see (1) above for thinking Real Hard
>about how your proposed configuration is supposed to work.

The man page says this is the default for situations with multiple
network interfaces or with point-to-point links, did NeXT F* up
again?
-- 
Michael Galassi				| nerd@percival.rain.com
MS-DOS:  The ultimate PC virus.		| ...!tektronix!percy!nerd