Ref: 10420003
Title: Release Notes: CS/50 TCP booting from NCS/AT version 13010
Date: 6/11/87

Copyright 3Com Corporation, 1991.  All rights reserved.

Software Release

SW/50-TCP-NCS/AT Version 13010

June 11, 1987

Part Number: 86-0112-00
Revision 00


TO:          CS/50 Users

FROM:        Bridge Communications, Inc.

SUBJECT:     SW/50-TCP-NCS/AT Version 13010

DATE:        June 11, 1987

Enclosed is a distribution diskette containing SW/50-TCP-NCS/AT
Version 13010.  This diskette should be used only to copy the
software to the NCS/AT disk.

This release memo contains the instructions for installing the
CS/50 software on the NCS/AT and describes the features of
SW/50-TCP-NCS/AT.

Installing Software on the NCS/AT

Because SW/50-TCP-NCS/AT Version 13010 is stored on a 96 TPI
diskette, you must use a blank, 96 TPI, double-sided, high-
density diskette if you are making a backup copy of the
distribution software.

To boot the CS/50 from an NCS/AT, you must first copy the
software from the SW/50-TCP-NCS/AT Version 13010 diskette to the
NCS/AT disk.  The procedure is described below:

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

2.  Insert the SW/50-TCP-NCS/AT Version 13010 diskette into the
disk drive of the NCS/AT.

3.  At the command prompt, type:

utility floppyread

The Floppyread utility will copy the
software from the SW/50-TCP-NCS/AT diskette to the NCS/AT
disk.

4.  As the file is copied to the disk, its name is displayed on
the screen.

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.



5.  When the file has been successfully copied, the command
prompt appears. Remove the diskette.



Features

SW/50-TCP-NCS/AT Version 13010 has the following features:

1.  The CS/50's port will match the terminal's baud rate when
operating in Autobaud mode.  If AutoBaud is selected, a
<RETURN> must be entered if the terminal is operated at 150
baud or higher. <RETURN><RETURN> must be entered if the
terminal is operated at 134.5 baud or lower.  The terminal
may have a baud rate between 50 baud and 19.2K baud.  If
AutoParity is selected, a <RETURN>.<RETURN> sequence must be
entered for baud rates of 150 or higher.  A
<RETURN><RETURN>.<RETURN> sequence should be entered for baud
rates of 134.5 or lower.  AutoBaud and AutoParity are the
default setting for terminal ports.

2.  The NoMacroBreak or MacroBreak field has been added to the
InterAction parameter.  The NoMacroBreak option prevents
users from breaking out of a macro while a macro is
executing.  When a NoMacroBreak option is set, the BREAK key
is ignored.  This feature can be used to prevent a user from
breaking out of a macro in Global Network Manager privilege.

3.  The BUffersize parameter in the port configuration can be set
to a value smaller than the system buffer size.  This feature
is useful for PC-to-host file transfer applications that
require smaller buffer sizes.

4.  Whenever a disconnection from a host port is requested,
either by a user typing the DisConnect command on the
terminal or by the AutoDisconnect timer, the LogoffString
will be transmitted to the host port before it closes down
the circuit.

LogoffString transmission is controlled by the string defined
in the LogoffString parameter of the host-end server.  The
LogoffString can be up to 24 characters long.

In order for the LogoffString to be transmitted, the
AUtoLogoff parameter should be set to ON.  This parameter can
be set on a per-port basis.

The LogoffString will not be transmitted if the disconnection
is caused by the following conditions:

a)  A network manager uses the Listen command to listen out
the host or terminal port.

b)  Traffic to the host port is totally flow controlled, and
transmission of the LogoffString is not possible within a
reasonable amount of time (currently six seconds).



c)  A user powers off the terminal before disconnecting the
session and the UseDTRin parameter is set to AsDTR on the
terminal port.

The LogoffString and AUtoLogoff parameters have the following
syntax:

a)  To set the LogoffString, enter:

SETDefault LogoffString = "string" The "string" can
contain any control characters; for example, "^M" for
CTRL-M, "^J" for CTRL-J.

b)  To enable/disable AUtoLogoff on a particular port, enter:

SETDefault (!portid) AUtoLogoff = [ON | OFF]

The
AUtoLogoff parameter is only available on a host port.

c)  To display the AUtoLogoff parameter for a particular
port, enter:

SHow (!portid) AUtoLogoff

d)  To display the LogoffString, enter:

SHow LogoffString

5.  Permanent virtual circuits (PVCs) support is implemented.
Permanent Virtual Circuits allow automatic circuit
reestablishment upon disconnection.

Once a permanent virtual circuit is defined, it will be
reestablished whenever the server is rebooted.  After the
PermanentVC parameter is set, the first connection attempt
will begin in approximately 30 seconds.  If the connection
attempt fails or if the permanent virtual circuit is
disconnected for any reason, the system will attempt to
reestablish the circuit every 60 seconds.  PVCs can be
defined only on a host port.  The destination end of the
connection can be either a terminal or host port.  The PVC
may be defined on both ends of the circuit.

In addition, PVCs may accept names.

PermanentVC parameters have the following syntax:

- SETDefault (!portid) PermanentVC = "<address>"

Defines a permanent virtual circuit between a local host
port and any port on the network.  <address> can be
either a physical address or a name.  The name can be up
to 12 characters long.



- SETDefault (!portid) PermanentVC = ""

Removes any previous PVC definition, but does not
disconnect any existing connection.  The existing
circuits can be disconnected using the DisConnect or
Listen command.

- SHow (!portid) DefaultParameter PermanentVC

Displays the current permanent virtual circuits.

6.  The SHow AllSessions command has an option allowing it to
display specified physical addresses or logical names of
destination devices when a connection is established.

For example, to display physical addresses of destination
devices, use the following command:

SHow AllSessions p To display logical names of destination
devices, use the following command:

SHow AllSessions

7.  Passive-end or host-side RLOGIN is supported.  The RLOGIN
feature allows a login from a UNIX host to a non-UNIX host
front-end by the CS/1, CS/50, CS/100, or CS/200 with TCP/IP.

For example, to perform an rlogin from a UNIX host to a non-
UNIX host, enter the following command:

rlogin <Internet address of the port on the Communications
Server where the host is connected>

User Interface

Refer to the Connection Service User's Guide for information on
user interface commands.  The commands not included in the
Connection Service User's Guide are described below:

- SETDefault (!<port-id>) InternetPort = <Internet address>

Assigns an Internet address to an individual physical or
rotary port.

- SETDefault (!<port-id>) InternetPort = 0.0.0.0

Removes the Internet address of an individual physical or
rotary port.

- SETDefault DefaultGateway = <Internet address>



Allows all remote net packets to be sent to the specified
gateway.

- SETDefault PrimaryNameServer = <Internet address>

Assigns an Internet address for the primary Name Server.  The
secondary Name Server will be queried if the primary Name
Server does not yield a name to address resolution.

- SETDefault SecondaryNameServer = <Internet address>

Assigns an Internet address for the secondary Name Server.
The primary Name Server will be queried if the secondary Name
Server does not yield a name to address resolution.

- SHow InternetPorts

Replaces the SHow InternetMap command.  It displays the
Internet address of the Communications Server itself and all
other Internet addresses associated with the Communications
Server (physical and rotary ports).



- SHow InternetServers

Displays Internet addresses of the Name Servers and Default
Gateway.

- SHow VirtualPorts

Displays the connection state (passive or active) of the
physical port to which these virtual ports are connected.

- SHow ARptable

Displays the mapping between Internet addresses and Ethernet
addresses of devices that communicate with the CS/50.  The
ARP always contains the unit's Internet address and the
broadcast address.

- ZeroArp

Cleans up the contents of the ARP table.  Normally, the
software automatically removes an ARP entry if it cannot
communicate with the device for more than 15 minutes.
However, if the device has moved to a different location,
this command can update the information in the ARP table
faster.

Compatibility

SW/50-TCP-NCS/AT Version 13010 operates with the following
products and software releases:

.br;NCS/150 running SW/150-TCP-NCS Version 10000 or later
.br;NCS/AT running SW/AT-NCS Version 10000 or later
.br;CS/1 running SW/1-TCP Version 11000 or later
.br;CS/1-SNA running SW/1-T-SNA Version 10000 or later
.br;CS/100 running SW/100-TCP Version 11000 or later
.br;CS/200 running SW/200-TCP Version 13000 or later
.br;GS/3-IP running SW/3-IP Version 10000 or later
.br;IVECS running SW/IVECS-TCP Version 13000 or later
.br;TCPTerm Version 10000 or later

Table 1 illustrates hardware and firmware compatibility of
SW/50-TCP-NCS/AT Version 13010.




___________________________________________________
|     Table 1  Software/Firmware Compatibility     |
|__________________________________________________|
| Product|       Software     |       Firmware     |
|        |                    |                    |
|        |                    |          MP        |
|        |                    |                    |
|  CS/50 |   SW/50-TCP-NCS/AT |   E2 MMON Rev. 00B |
|________|____________________|____________________|

Documentation

The current versions of the manuals for the CS/50 are:

+ Connection Service User's Guide (8/86)
(Part number: 09-0063-01)

+ Network Management Guide (1/87)
(Part number: 09-0067-01)

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

+ Getting Started Guide (1/87)
(Part number: 09-0043-01)

+ Series/200 Planning and Installation Guide (2/86)
(Part number: 09-0060-00)

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

Trademarks

UNIX is a registered trademark of AT&T.


