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From: phil@amdcad.UUCP
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Where can I find SLIP server for 4.2/3?
Message-ID: <18137@amdcad.AMD.COM>
Date: Sun, 30-Aug-87 02:34:05 EDT
Article-I.D.: amdcad.18137
Posted: Sun Aug 30 02:34:05 1987
Date-Received: Sun, 30-Aug-87 18:43:02 EDT
References: <8708300016.AA04771@okeeffe.Berkeley.EDU>
Reply-To: phil@amdcad.UUCP (Phil Ngai)
Distribution: world
Organization: Advanced Micro Devices
Lines: 27

In article <8708300016.AA04771@okeeffe.Berkeley.EDU> karels%okeeffe@UCBVAX.BERKELEY.EDU (Mike Karels) writes:
>I'm not sure what you mean by a SLIP server; the SLIP protocol for
>the 4BSD side of a connection is included in 4.3 as if_sl.c.  It is
>configured into a kernel with a line like
>	pseudo-device	sl	4
>in the system config file, where the number is the number of lines to support.
>The lines are then set up with the programs slattach and ifconfig, each
>of which have manual entries.

This brings up a question I had. I hope it's not too stupid. Consider
a network with machines A, B, and C. B talks to A and C. A does not
talk to C except through B. B's /dev/ttyh0 goes to A. B's /dev/ttyh1
goes to C. I slattach ttyh0 and ttyh1. 

Now I want to ifconfig sl0 and sl1. How do I know which dstaddr to
associate with sl0 and which with sl1? Does it matter? If not, how
does the kernel know which tty line to send the packets down? 

The thing that confuses me is I would expect slattach to take a sl0 or
sl1 argument as well as a tty argument. But it doesn't. 

Also, do I have to do anything special to B to get it to forward
packets from A to C?
-- 
I speak for myself, not the company.

Phil Ngai, {ucbvax,decwrl,allegra}!amdcad!phil or amdcad!phil@decwrl.dec.com