Ref: 99980040
Title: Release Note: CS/1 booting from diskette Ver 20000
Date: 10/13/87

Copyright 3Com Corporation, 1991.  All rights reserved.

Software Release

SW/20-SNA Version 20000

October 13, 1987

Part Number: 86-0129-00
.br;Revision 00


TO:          CS/1-SNA Users

FROM:        Bridge Communications, Inc.

SUBJECT:     SW/20-SNA Version 20000

DATE:        October 13, 1987

Enclosed is the SW/20-SNA Version 20000 diskette.  This diskette
is your distribution copy and should only be used to copy the
system software onto a backup diskette.  The backup diskette may
then be used to update your system.

In order for SW/20-SNA Version 20000 to operate, your CS/1-SNA
must be equipped with the following:

+ MCPU20 board

+ 96 TPI disk drive

+ EC/2 Ethernet controller (512 kilobytes of RAM), IBC/M
broadband controller (512 kilobytes of RAM), or TRC/M Token
Ring controller

If you have an MCPU-based CS/1-SNA, you can update it with an
MCPU20 Upgrade Kit (part number: 23-0026-00).  Contact your sales
representative for pricing and delivery information.

Compatibility

SW/20-SNA Version 20000 can operate with the following products
and software releases:

.br;CS/1 running SW/1-A/BSC/SDLC Version 20000 or later
.br;CS/1-HSM running SW/1-HSM Version 12000 or later
.br;CS/100 running SW/100-A/BSC Version 15000 or later
.br;CS/200 running SW/200 Version 20000 or later
.br;IVECS running SW/IVECS-A Version 10000 or later
.br;GS/1 running SW/1-X.25 Version 14000 or later
.br;GS/3 running SW/3 Version 14000 or later
.br;NCS/1 running SW/1-NCS Version 10000 or later
.br;NCS/150 running SW/150-NCS Version 10000 or later
.br;PC running EtherTerm Version 12000 or later
.br;PC running EtherTerm/3270 Version 14000 or later



Table 1 illustrates the software and firmware compatibility for
SW/20-SNA Version 20000. ''
_____________________________________________________________________________________
|                      Table 1  Software/Firmware Compatibility                      |
|____________________________________________________________________________________|
|        |               |                                                           |
| Product|    Software   |                          Firmware                         |
|________|_______________|___________________________________________________________|
|        |               |     SIO   |   MCPU20  |    EC/2   |    IBC/M   |   TRC/M  |
|        |               |           |           |           |            |          |
| CS/1   |  SW/20-SNA    |  M1SYNC 1C|  M3MMON 0B|  M0EDL2 0A|  N/A       |  N/A     |
|        |  Version 20000|  or later |  or later |  or later |            |          |
|________|_______________|___________|___________|___________|____________|__________|
|        |               |           |           |           |            |          |
| CS/1-B |  SW/20-SNA    |  M1SYNC 1C|  M3MMON 0B|  N/A      |  M2IBCM 00E|  N/A     |
|        |  Version 20000|  or later |  or later |           |  or later  |          |
|________|_______________|___________|___________|___________|____________|__________|
| CS/1-TR|  SW/20-SNA    |  M1SYNC 1C|  M3MMON 0B|  N/A      |  N/A       |  No PROMs|
|        |  Version 20000|  or later |  or later |           |            |          |
|________|_______________|___________|___________|___________|____________|__________|
Installation

Because SW/20-SNA Version 20000 is stored in a different format
than SW/1-SNA Version 13000 or earlier, you must make a backup
copy of the distribution diskette, and then rebuild the
clearinghouse names, macros, and port configurations.  Follow
these steps for installing SW/20-SNA Version 20000:

1.  Connect a terminal to the console port of the CS/1.

2.  Press the Reset switch.

3.  Make a backup copy of the distribution diskette using the
following command: > co <n> where n is the number of copies
to be made.

4.  The following message appears on the screen: insert master
and hit return key Insert the SW/20-SNA Version 20000
distribution diskette in the disk drive.  After you press
the return key, the following messages appear on the screen
if the read completes successfully: reading ...  OK insert
copy #n and hit return key If the message "read error"
appears instead of the message "OK", contact an authorized
Bridge service representative for assistance.

5.  Remove the SW/20-SNA Version 20000 diskette from the disk
drive. Insert a blank, 96 TPI, double-sided, double-density
diskette in the disk drive, then press the return key.



6.  If the copy completes successfully, the following messages
appear on the screen: writing ... verifying ... OK copy
completed

7.  Remove the diskette from the disk drive, and label it
"SW/20-SNA Version 20000".  Store the distribution diskette
in a safe place, and use the newly created diskette to
update your system.

Operation_Instructions

Refer to the Configuration Guide for detailed information on
system generation parameters and complete system generation
procedures.  For the parameters not included in the Configuration
Guide, refer to the SNA Support Guide.  After the installation
has been completed, boot the system diskette (SW/20-SNA Version
20000 diskette).  If a switched line is used, also dial the SDLC
line.  The CS/1-SNA is now ready for operation.

For easy operation, a network manager can define rotaries and
clearinghouse names on the CS/1-SNA in remote mode from a
terminal attached to a CS/1 or a CS/100.

New_Features

The following features, which were not present in SW/1-SNA
Version 13000 or earlier, have been implemented in SW/20-SNA
Version 20000:

1.  SW/20-SNA now supports 48 logical units (LUs).

2.  SW/20-SNA includes data link drivers for Ethernet,
broadband, and Token Ring Communications Servers.  The
appropriate driver is selected automatically during
initialization.

Changes_in_the_Sysgen_Program

The Exchange ID, which is an SNA SDLC parameter, has been changed
from a five-digit number to a seven-digit number.

For 3274 CCU emulation, the seven-digit Exchange ID is formed by
preceding the former five-digit Exchange ID by 17.  For example,
if the former ID was 92976, the seven-digit ID is 1792976.

Restrictions

There is a restriction on the number of 3278 Model 5 terminals
that can be emulated.  If more than four 3278 Model 5 terminals
are emulated, the total number of devices supported by the CS/1
must be reduced from 48.  The number of devices supported can be
changed by selecting item 4, Number of Devices, from the SNA SDLC



Parameters menu.  Table 2 illustrates the maximum number of
devices that can be supported for different numbers of 3278 Model
5 terminals emulated. ''
________________________________________
|                Table 2                |
|    Maximum Number of LUs Supported    |
|_______________________________________|
|                                       |
| Number of            Maximum Number of|
| 3278 Model 5         LUs Supported    |
| Terminals Emulated                    |
|                                       |
|         4                   48        |
|         5                   47        |
|         6                   46        |
|         7                   45        |
|         8                   44        |
|         9                   43        |
|         10                  42        |
|         11                  41        |
|         12                  40        |
|         13                  39        |
|         14                  38        |
|         15                  37        |
|         16                  36        |
|         17                  35        |
|         18                  34        |
|         19                  33        |
|         20                  32        |
|         21                  31        |
|         22                  30        |
|         23                  29        |
|         24                  28        |
|         25                  27        |
|_______________________________________|
Limitations

SW/20-SNA Version 20000 has the following limitations:
TM
1.  The high intTMsity attribute is not supported in VIP 7814
and VIP 7305   terminal emulation.

2.  There is no command available to disable the wrap-TMound
feature in the host terminal mode of the Xerox 820  .
Instead, the screen is advanced one line to the next
screen.
TM
3.  A beep sound is always generated by the VIP 7201   when the
screen is cleared.



4.  A printer attached to a CS/100 prints slowly if the data is
from a host computer front-ended by a CS/1-SNA.

Select one of the following solutions to speed up the
printing:

1.  Reduce the SPP window size to one on the CS/100.  Because
the SPP window size cannot be sysgenned, contact an
authorized Bridge service representative for assistance if
you choose this solution.

A smaller SPP window size reduces overall throughput.

2.  Reduce the buffer size of the CS/100 to 82 by sysgen.  The
Buffer size parameter is on the Kernel Parameters menu in
the sysgen program of the CS/100.  For information on
running the sysgen program, refer to the Configuration
Guide.

A smaller buffer size reduces the number of sessions with
the CS/100.

Memory_Dump_Procedure

If the CS/1-SNA crashes for any reason, use the procedure
described in this section to obtain a memory dump.  Two 96 TPI
diskettes are required; they do not have to be formatted before
the crash occurs.

A terminal must be attached to the console port of the CS/1-SNA,
and the Automatic Reboot option of the MCPU20 must be disabled
prior to the crash.  Follow these steps to disable the Automatic
Reboot option:

1.  At the MCPU20 prompt (">") on the console terminal of the
CS/1-SNA, invoke the Firmware Configuration utility by
entering "fc" followed by a carriage return.

The Firmware Configuration Utility menu will appear.

2.  Select Change Parameters from the Firmware Configuration
Utility menu by entering "C".  The current parameters will
be displayed.

3.  Select Auto reboot from the menu by entering "2".  The Auto
reboot menu will be displayed.

4.  Select boot monitor from the Auto reboot menu by entering
"m".  The current parameters will be redisplayed.

5.  Exit the current parameters menu by entering "q".



6.  Exit to the MCPU20 monitor by entering "e".

7.  Press the Reset switch on the front panel of the CS/1-SNA.

8.  When the MCPU20 monitor prompt appears, enter "bt" followed
by a carriage return to boot the CS/1-SNA.

Use the following procedure to obtain a memory dump after the
crash:

1.  Write down any information displayed on the console
terminal prior to the crash (e.g., the Panic or Exception
code).

2.  From the console terminal, display the contents of the
system registers by entering the following command: dr

3.  Write down the values displayed.  This information must be
included with the dump diskettes.

4.  From the console terminal, execute the Dump command by
typing: du

5.  Insert the first diskette in the disk drive and press any
key on the console terminal except the Break key.

6.  When prompted to insert the next diskette, remove the first
diskette from the drive and label it "SW/20-SNA Memory Dump
#1".

7.  Insert the second diskette in the disk drive and press any
key on the console terminal except the Break key.

8.  When prompted to insert the next diskette, remove the
second diskette from the drive and label it "SW/20-SNA
Memory Dump #2".

9.  Press the Break key on the console terminal.  This will
terminate the dump procedure and return control to the
MCPU20 monitor.

10.  Send both diskettes, the information obtained from step 1
and step 3, a description of how and when the crash
occurred, and any other relevant information to Bridge's
Technical Support staff.

Documentation

The current manuals for the CS/1-SNA and network planning are
listed below:



+ LAN Planning Guide (9/86)
.br;Part Number: 09-0085-00

+ Connection Service User's Guide (8/86)
.br;Part Number: 09-0063-01

+ Series/1 Installation Guide (11/86)
.br;Part Number: 09-0022-05

+ Network Management Guide (9/87)
.br;Part Number: 09-0067-02

+ Configuration Guide (1/87)
.br;Part Number: 09-0093-00

+ SNA Support Guide (3/87)
.br;Part Number: 09-0045-01

If you have any questions, contact an authorized Bridge service
representative for assistance.

Trademarks

IBM is a registered trademark of International Business Machines
Corporation.
VIP 7814, VIP 7305, and VIP 7201 are trademarks of Honeywell
Communications Systems, Inc.
VT100 is a trademark of Digital Equipment Corporation.
Xerox 820 is a trademark of Xerox Corporation.


