Troubleshooting dedicated manual SLIP links
To troubleshoot a dedicated manual SLIP link:
Verify the soundness of the serial line connections. For SLIP to
run over a dedicated serial line, the line itself and
its connections at each end must be sound.
Verify that the local and remote systems on the connection
are set to use the same data transfer speed.
For the local SCO OpenServer system, check the value of the baud_rate
parameter for this SLIP link.
For the remote system, check the data transfer speed setting in
its configuration for this link.
Test the serial line as follows if the line connections appear sound
but the problem still appears to be in the line.
For this procedure, you must have access to the remote system,
and the remote system must be running the UNIX operating system.
Log into both machines as root.
Disable SLIP for this serial line at both machines by
killing the associated slattach process.
Enable getty at the remote machine
by executing the following command there:
At the local machine, edit the file /usr/lib/uucp/Devices
to be sure that the tty port for the serial line being used
is configured for direct access and both systems specify the same speed.
Direct tty1a - 9600 direct
Enter the following
command on the source machine: cu -l tty dir,
where tty is the name of the tty line you use.
Your serial line is sound if the screen displays
and the login prompt appears.
Type ~. at the beginning
of a line to exit the cu program.
If there is no response, the problem probably lies with the cable. Check
the cable's connections or try another cable. If an error message appears,
``Connecting to other computers with UUCP''.
Retry the slattach command with the +v
flag in addition to your other parameters.
This turns on verbose mode, allowing you to see the
ongoing progress of slattach at the command line
and identify potential problems.
If you have still not located the source of the problem, see
``Using ping to troubleshoot SLIP link problems''.
Troubleshooting dynamic outgoing SLIP links
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003