Ref: 10420005
Title: Release Notes: CS/1 Booting from NCS/AT version 20060
Date: 12-22-87

Copyright 3Com Corporation, 1991.  All rights reserved.

Software Release

SW/1-A/BSC/SDLC-NCS/AT Version 20060

December 22, 1987

Part Number: 86-0143-00
Revision 00


TO:          CS/1 Users

FROM:        Bridge Communications, Inc.

SUBJECT:     SW/1-A/BSC/SDLC-NCS/AT Version 20060

DATE:        December 22, 1987

Enclosed is a distribution diskette containing SW/1-A/BSC/SDLC-
NCS/AT Version 20060 for CS/1s that are booted from an NCS/AT.

This release memo contains the instructions for installing the
software on the NCS/AT.  It also describes the new features of
and bugs fixed in SW/1-A/BSC/SDLC-NCS/AT.

Compatibility

SW/1-A/BSC/SDLC-NCS/AT Version 20060 can operate with the
following products and software releases:

.br;CS/1-X.25 running SW/1-X.25 Version 14000 or later
.br;CS/1-HSM running SW/1-HSM Version 11010 or later
.br;CS/1-SNA running SW/1-SNA Version 10000 or later
.br;CS/100 running SW/100-A/BSC Version 12000 or later
.br;CS/200 running SW/200-A Version 20000 or later
.br;GS/1 running SW/2-CS-ICS Version 14000 or later
.br;GS/3 running SW/3 Version 14000 or later
.br;GS/4 running SW/4 Version 10000
.br;GS/6 running SW/6 Version 10000 or later
.br;GS/300 running SW/300 Version 10000 or later
.br;NCS/AT running SW/AT-NCS Version 11000 or later
.br;NCS/150 running SW/150-NCS Version 10000 or later
.br;NCS/1 running SW/1-NCS Version 10000 or later
.br;IVECS running SW/IVECS-A Version 10000 or later
.br;Personal computer running EtherTerm Version 12000 or later
.br;Personal computer running SW/4-PCS Version 10000 or later



Table 1 illustrates the software and firmware compatibility for
SW/1-A/BSC/SDLC-NCS/AT Version 20060.


_____________________________________________________________________
|              Table 1  Software/Firmware Compatibility              |
|____________________________________________________________________|
|  Product |   Software |                   Firmware                 |
|          |            |                                            |
|__________|____________|____________________________________________|
|          |            |           |           |           |        |
| CS/1-A   |  SW/1-     |  SIODL 14 |  M1MMON 1B|  M0EDL1 4B|  M0EDL2|
|          |  A/BSC/SDLC|  or later |  or later |  or later |  00A or|
|          |            |  M0ASYN   |           |           |  later |
|          |            |  15A or   |           |           |        |
|__________|____________|___________|___________|___________|________|
|          |            |           |           |           |        |
| CS/1-BSC |  SW/1-     |  SIOBSC 2 |  M1MMON 1B|  M0EDL1 4B|  M0EDL2|
|          |  A/BSC/SDLC|  or later |  or later |  or later |  00A or|
|          |            |  M1SYNC 1B|           |           |  later |
|__________|____________|___________|___________|___________|________|
|          |            |           |           |           |        |
| CS/1-SDLC|  SW/1-     |  M1SYNC 1B|  M1MMON 1B|  M0EDL1 4B|  M0EDL2|
|          |  A/BSC/SDLC|  or later |  or later |  or later |  00A or|
|          |            |           |           |           |  later |
|__________|____________|___________|___________|___________|________|

If you have an SIO-16 in the CS/1, you  must  use  the  following
configurations:

1.  For the CS/1 with one or more  SIO-16s,  an  EC/2  must  be
installed  in the CS/1. In addition, the MCPU PROMs must be
M1MMON Revision 1G or later.

2.  For the CS/1 with three or four  SIO-16s,  the  MCPU  board
must be upgraded to 12 MHz.  One or two SIO-16s can be used
with a 10 MHz MCPU board.

Installation

Use the following procedure to install SW/1-A/BSC/SDLC-NCS/AT
Version 20060 on the NCS/AT:

1.  Follow the instructions in the NCS/AT Installation and
Operation Guide to log in to the NCS/AT.  A command prompt
appears on the screen after you have logged in.



2.  Insert the SW/1-A/BSC/SDLC Version 20060 diskette in the
disk drive of the NCS/AT.

3.  At the command prompt, type: utility floppyread The
Floppyread utility copies the software from the SW/1-
A/BSC/SDLC diskette to the NCS/AT disk.

4.  As the files are copied to the disk, their names are
displayed on the screen.  They are cs1x, sio16diags, and
sio16driver.

If floppy read errors or disk write errors occur, remove
and replace the diskette; then repeat the procedure
starting at step 2.

If read or write errors continue to occur, or if other
error messages appear, contact an authorized Bridge service
representative for assistance.

5.  When the file has been successfully copied, the command
prompt appears.  Remove the SW/1-A/BSC/SDLC diskette and
store it in a safe place.

6.  For each CS/1 that is to be booted from the NCS/AT, use the
BInd command to bind the server to the NCS/AT.  Refer to
the NCS/AT Installation and Operation Guide for further
information on the BInd command.

Because SW/1-A/BSC/SDLC Version 20060 is stored on a 96 TPI,
double-sided, high-density diskette, you must use the same type
of diskette if you are making a copy of the distribution
software.

New_Features

The following features, which were not present in SW/1-A/BSC/SDLC
Version 20050 or earlier, have been implemented in SW/1-
A/BSC/SDLC-NCS/AT Version 20060:

1.  In addition to the SETDefault command, the SET command can
be used to alter the buffer size of an individual port.
For instance, to change the current buffer size of a port
to 56 bytes, type: set BUffersize = 56 To change the buffer
size of the host, the REMoteSET command can be used with
the same syntax shown above.

Setting the buffer size to be smaller than the system
buffer size, which is usually 82 bytes, actually creates a
buffer of the specified size.  If the specified value is
greater than the system buffer size, more buffers of the
system buffer size are created instead of a bigger buffer.

The SET command does not take effect immediately during a
session.  The additional buffers created by the command are
not used until the buffers currently allocated to the port
have been exhausted.

2.  The default interval between audit trail messages sent to
the NCS is now 4 seconds.  Previously, the default interval
was 90 seconds.

The four-second timer can be sysgenned.  This is done by
modifying the Statistics Monitor timer value.  Refer to the
Configuration Guide for further information.

3.  The server accepts from the netmap packet a clock value
that is lower than the current value.  For example, if the
clock on the NCS is set back to year 1970, all the system
clocks of the servers on the network are changed within 45
seconds to this new value.

Bugs_Fixed

The following problems, which existed in SW/1-A/BSC/SDLC Version
20050 or earlier, have been corrected in SW/1-A/BSC/SDLC-NCS/AT
Version 20060:

1.  The audit trail records now show the actual number of
rotary ports used.  In the past, the rotary ports used
count was always zero according to the audit trail records.

2.  It is no longer possible for a port to be trapped in the
WAIT-FOR-CONNECT state forever or for the permanent virtual
circuit to suddenly stop working.

3.  The data link drivers can now detect all known deadlock
situations properly.  Running the servers on a noisy
network does not crash the servers or cause the servers to
drop from the netmap.  However, the PROM on the EC/2 board
must be M0EDL2 01A or later for this to work.

Known_Problems

The following is a list of current problems in SW/1-A/BSC/SDLC-
NCS/AT Version 20060:

1.  If you have not updated all of your CS/1s to SW/1-
A/BSC/SDLC Version 20000 or later, a connection from a CS/1
that runs SW/1-A/BSC/SDLC Version 17100 or Version 18610 to
a CS/1 that runs SW/1-A/BSC/SDLC Version 20000 or later may
cause a delay of approximately four seconds.

2.  If the FlowControlTo and FlowControlFrom parameters are
both set to None, resetting one of the parameters to
XonXoff or EnqAck causes the other to be automatically set
to XonXoff or EnqAck.

3.  Due to a memory limitation, the SHow CONFiguration and SHow
MACro commands no longer display output in alphabetical
order.

4.  On the SIO-16 ports, the help menu of the BAud parameter
displays LowAutoBaud and HiAutoBaud as options.  However,
the SIO-16 only supports single-range autobaud.  Whether
you set the BAud parameter to LO or HI does not affect the
baud rate, which ranges from 50 to 38.4K to match the
terminal's baud rate.

5.  The Clear to Send (CTS) and Request to Send (RTS) lines are
not supported for the SIO-16 in this release.  However, on
an SIO-16 port, the help menu of the FlowControlTo and
FlowControlFrom parameters displays CTSRTS as an option of
these parameters.

Documentation

For further information on the CS/1 and network planning, refer
to the following manuals:

+ CS/1 Installation Guide (10/87)
(Part Number: 09-0117-00)

+ Connection Service User's Guide (11/87)
(Part Number: 09-0063-02)

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

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

+ Getting Started Guide (2/87)
(Part Number: 09-0043-01)

+ NCS/AT Installation and Operation Guide (9/87)
(Part Number: 09-0092-01)

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


