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- Newsgroups: comp.unix.amiga
- Path: sparky!uunet!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!cbfsb!cbnewsc!looney!cmv
- From: cmv@looney.att.com (Craig M. Votava)
- Subject: Running SLIP on Amiga Unix 2.1
- Organization: AT&T Bell Laboratories
- Date: Wed, 26 Aug 1992 23:13:33 GMT
- Message-ID: <1992Aug26.231333.18635@cbnewsc.cb.att.com>
- Sender: news@cbnewsc.cb.att.com (NetNews Administrator)
- Nntp-Posting-Host: looney.ih.att.com
- Lines: 77
-
- Folks-
-
- I just thought I'd post my recent experiences with getting a SLIP connection
- up and running with Amiga Unix 2.1 (Amiga Version 2.1p2a) over 2 Telebit
- Qblazer modems to an AT&T 750X X-windows terminal (now an NCR product).
-
- I have my amiga at work hooked up to our building ethernet, and decided that
- I wanted SLIP from home. So I looked at available modems, and decided that
- the Telebit Qblazer V.32/V.42/V.42bis modem (running at speeds up to 38,400)
- for $299.00 was the best deal around, so I bought 2 of them. Next, I got an
- old 750X terminal from our terminal graveyard, that was not in use. Finally,
- I had to do a whole bunch of learning to get everything to work properly.
- Here's a summary of what I did.
-
- 1.) Connected 750 to A3000 with a direct RS-232 cable.
-
- 2.) Uncommented the following lines from /etc/inet/network-config
-
- =============================================================================
- /usr/sbin/slink addslip /dev/sld0 sl0
-
- /usr/amiga/bin/slattach 38400 looney.ih.att.com terminal.ih.att.com < /dev/term/ser &
- =============================================================================
-
- 3.) Uncommented the following line from /etc/inet/inetd.conf
- =============================================================================
- tftp dgram udp wait root /usr/sbin/in.tftpd in.tftpd -s /tftpboot
- =============================================================================
-
- 4.) Put a bunch of configuration files for the 750 into the /tftpboot directory
-
- 5.) Setup the 750 terminal with a network address for our building network.
-
- 6.) Rebooted the A3000, and powered up the 750.
-
- At this point I was able to telnet into the A3000 from the 750 terminal with
- no problems, but I couldn't talk to the rest of the building network. After
- a LOT of bad words, and much help from smart people, we finally figured out
- how to make this second part work. Here, I'll show how to do it, but I won't
- explain much what is happening. Maybe someday I'll have time, but not now.
-
- 1.) Setup the 750 terminal so that the A3000 is designated as the "gateway"
-
- 2.) Execute the following command to add a "proxy-ARP" entry into the ARP table
- on the A3000
- =============================================================================
- $ arp -s terminal.ih.att.com 0:80:10:0:13:77 pub
-
- where the colon delimited number is the HEX ethernet (not IP) address
- of the A3000.
-
- To verify this, you can use the following command:
-
- $ arp -a
- terminal.ih.att.com (135.1.13.234) at 0:80:10:0:13:77 permanent published
- =============================================================================
-
- Once this was all setup properly, I was able to access (ping, telnet, etc) any
- host on our building network "directly" from the 750 terminal.
-
- Finally, I was able to remove the direct connect, and insert the modems into
- the loop, and try things that way. The speed was slightly degraded (the modems
- can go at 38,400 ideally, but I suspect the average throughput is somewhat
- less), but it was still very usable for the stuff I want to do.
-
- Thanks goes to the WONDERFUL CBM Unix development team that decided to put this
- SLIP stuff onto the tape, with all of the commented out "activation" lines
- already in the appropriate files. Good job! This really made things easy for
- me.
-
- Comments and Questions are welcome!
-
- -Craig
-
- ()_() Craig Votava
- (_) AT&T Bell Labs, Naperville IL
- cmv@looney.att.com
-