Ref: 15590001
Title: Troubleshooting Tips for Communications Servers
date: 8/30/89

Copyright 3Com Corporation, 1991.  All rights reserved.

Consider the following ten tips when troubleshooting Comm Servers.

1.  To remotely check the status of a server from another server
or a PC, you can connect to the management port by typing the
following:

                c <eth. address>!136     for XNS
                remote <ip address>      for TCP

2.  The release note for SW/20-TCP Version 3.0 has a typographic
error which will cause a problem when trying to upgrade from
Version 20100.  When copying files from Version 20100 to the new
Version 3.0, step 6 in the release memo tells you to type:  w 442
4008000 7200.  The correct sequence is

                       w 442 4008800 7200

3.  In the CS/1 Installation Guide, the figure for the SIO-16
jumper settings (pg. 3-28, Fig. 3-11), does not show pin
numbering for E41 and E58.  For E41, the numbering (from left to
right) is 1,3 on the bottom and 2,4 on top.  For E58, the
numbering (l-r) is 1,3,5,7,9 on the bottom and 2,4,6,8,10 on top.

4.  SIO-16s are now up to Rev.08.  A change was made to try and
rid the problem of ports dropping and hanging.

5.  Remember that all Comm Server RS-232 25-pin ports are
configured as DCEs.  Data is transmitted out on pin 3 and
received on pin 2.  Make sure you have the proper cabling to
accommodate this when connecting devices.

6.  A CS/1 with three or four SIO-16s must also have an MCPU
(12MHz) and EC/2 with 512K memory.

7.  If a CS/1 has an MCPU running at 12MHz, it requires SW/1....
software.  If a CS/1 has an MCPU20, it requires SW/20....
software.

8.  If you edit a macro after executing it, be sure to use the
ZeroMacro command to remove the original macro, or you will
continue to execute it instead of the new version.

9. CS/1s have the following operating options:

         CS/1s on Ethernet can use XNS, TCP, and OSI protocols
         CS/1s on token networks use XNS or TCP
         CS/1s on broadband use TCP only

10. If a CS/210 is not booting, check the firmware configuration
settings.

    a.  Connect a terminal to the maintenance port.  The default
is port 0 but this may have been changed, so make sure you are
connected to the right port.

    b.  Press the hardware interrupt switch on the left side of
the CS near the back.

    c.  Press return on the terminal.  You will see a right arrow
prompt (>).

    d.  Type FC and press [Return].  This will display a menu
that shows your options and settings including what is set to be
the boot source.  Confirm it is the one you need to use.
