SLIP Installation and Configuration Guide

There is currently little GUI (visual tool) support for configuring modems, much less configuring SLIP. Therefore, configuration involves working in a shell, and these instructions presume at least limited familiarity with text editors, such as vi or jot.

Verifying Software Installation Status

Type the following to verify software installation:

% versions -a eoe{1,2}.\*.{uucp,slip}
I = Installed, R = Removed

I = Installed, R = Removed

   Name                 Version   Description

I  eoe1                762495609  IRIX Execution Environment 1, 5.2
I  eoe1.man           1011009700  IRIX Execution Environment Man Pages
I  eoe1.man.uucp      1011009700  UNIX-to-UNIX Copy Man Pages

I  eoe2                762380174  IRIX Execution Environment 2, 5.2
I  eoe2.man           1011009700  IRIX Execution Environment Man Pages
I  eoe2.man.slip      1011009700  SLIP Man Page
I  eoe2.sw            1011009700  IRIX Execution Environment Software
I  eoe2.sw.slip       1011009700  SLIP Software
I  eoe2.sw.uucp       1011009700  UUCP Utilities

IP Address Selection

Proceed with IP address selection.

Terminology

• Local hostname and IP address
• Remote hostname and IP address
• Modem type
• Phone number
• Login
• Password
• Framing type, SLIP or PPP
• IP address of a nameserver, the DNS host

/etc/hosts

Only needs 3 entries, since all others can be obtained from the nameserver after a connection is made. The hosts file could look like (with appropriate substitutions):

127.0.0.1   localhost loghost
xx.yy.zz.ww myname.domain.sgi.com myname
aa.bb.cc.dd remote.domain.sgi.com remote
224.0.0.0   multicast

~uucp/Devices (/usr/lib/uucp in Irix4, /etc/uucp in Irix5)

Common for all versions to allow the use of cu for debugging connection problems. Make all additions and changes at the bottom of the file to simplify future updates. Use this example for port tty2:

Direct ttyd2 - Any direct
Direct ttym2 - Any direct
Direct ttyf2 - Any direct

~uucp/Devices

The file entries are based upon the modem type. This example assumes a Telebit T3000 modem running at 38400bps on port tty2. Add the following to the bottom of the file for each dialout modem. If all modems are "equivalent" (any modem to any destination), then use the same label for each modem (ACUslip), otherwise you'll need to make different labels for each class of modem. Make sure that the last field (t3000 in this example) is in your dialers file, or it will fail "mysteriously"!

ACUslip ttyf2 null 38400 212 x t3000

~uucp/Systems

This is the "smarts" for dialing the modem and logging into the server (to start SLIP). This is a "standard" chat script, modifications may be made in some circumstances. Put all entries at the end of the Systems file. There may be more than one line with the same name if you are using either a different modem or a different phone number (or both). Each entry must be made on a single line.

remote Any ACUslip 38400 phone_number "" \r\c ogin:--ogin: login_name assword: password framing

Irix SLIP sends out a message with the framing name before actually starting the protocol, adding a final match of "SLIP" ensures that the login really succeeded. I make the convention or prefixing remote with "S" for SLIP, followed by the hostname.

For Irix4 and Irix5 enter the following:

/usr/etc/slip -o -c -p cslip -r remote -l my_slip_address  -u remote &
[wait for the connection message]
/usr/etc/route add net default remote 1  # only on a client!!!!

Irix5 version can be configured to start on boot, and does dynamic link management. Something like the following script can be put in /etc/init.d/network.local, and a link added in /etc/rc2.d to start a SLIP connection at boot time. Starting PPP at boot shows an alternate method of starting at boot time.

Note: Don't use the '-R ""' option on a server! See `man slip` for more info. The syntax of the -R "-" option varies slightly between releases. See the man page for more details. chat_name is the first field of the Systems entry if it is different than the hostname of the remote.

#!/bin/sh
# slip boot startup script
case $1 in
   start)
       /etc/killall slip
       /usr/etc/slip -q -p cslip -R "" -r remote -u chat_name -l my_slip_address &
       ;;
   stop)
       /etc/killall slip
       ;;
esac

• Setting up the modem (or modems)
• Setting up the security on the machine
• Adding the support for SLIP client(s) dial in

Enabling SLIP Client Dialin

Debugging Your Installation