Ref: 99980124
Title: SW/200-TCP-NCS/AT Version 13010
Date: 5/26/87

Copyright 3Com Corporation, 1991.  All rights reserved.

Enclosed is a diskette containing SW/200-TCP-NCS/AT Version
13010, which runs on both the CS/200 and CS/200B.  These
Communications Servers can be booted from an NCS/AT.

This diskette is your distribution copy of the software and
should be used only to copy the software onto the NCS/AT.

This release memo contains the instructions for installing
software on the NCS/AT. It also describes new features of and
bugs fixed in this version of the software.

.h1;Installing Software on the NCS/AT

Since SW/200-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.
Because the CS/200 is a diskless unit, it must be supported by a
Network Control Server. You must copy SW/200-TCP-NCS/AT Version
13010 from the distribution diskette to the NCS/AT disk using the
following steps:

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/200-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/200-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 for assistance.

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


.h1;Compatibility

SW/200-TCP-NCS/AT Version 13010 operates with the following
products and software releases:

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

Table 1 illustrates the software and firmware compatibility for
SW/200-TCP-NCS/AT Version 13010.

___________________________________________
| Table 1  Software/Firmware Compatibility |
|__________________________________________|
|                                          |
|  Product       Software       Firmware   |
|                                          |
| CS/200       SW/200-TCP-    C1MMON 01C   |
|              NCS/AT         or later     |
|                                          |
| CS/200-B     SW/200-TCP-    D2MMON 00B   |
|              NCS/AT         or later     |
|__________________________________________|


.h1;New Features

The following features, which were not present in SW/200-TCP
Version 13000, have been implemented in SW/200-TCP-NCS/AT Version
13010:

1.  The Connect and REMOTE commands reject invalid Internet
addresses.  SW/200-TCP-NCS/AT Version 13010 checks the
legality of Internet address assignments (i.e., any of the
InternetServer addresses and the InternetPort addresses) as
follows:

- Any address may be assigned 0.0.0.0, indicating no
assignment (all addresses start out with this value).

- No address may be assigned a broadcast or loopback
address (host portion all 0s or all 1s).

- The DefaultGateway may not be the local address.

- If the server is booted from the Network Control Server,
neither the PrimaryNameServer nor SecondaryNameServer
may be the local address.

2.  A new port configuration parameter "NetAScii" has been added.
Its values are UseLF and UseNUL.  This parameter allows the
user to choose the character sequence transmitted by the
server when a <CR> is entered. If the "NetAScii" parameter is
set to UseLF, a <CR><NUL> will be transmitted.

The "NetAScii" parameter is only used by a terminal (active)
port; it has no effect on the host (passive) side of a
connection.

The "NetAScii" parameter has been implemented to provide for
the variety of TELNET implementations that interpret the
TELNET data stream differently.  For hosts that correctly
view <CR><LF> and <CR><NUL> as encoded Network Virtual
Terminal functions (e.g., 4.3 BSD UNIX), Bridge recommends
that the "NetAScii" parameter be set to UseNUL.  When the
"NetAScii" parameter is set to UseNUL, it allows <CR><NUL> as
a <CR>.  For hosts that neglect to strip a <NUL> following a
<CR>, Bridge recommends that "NetAScii" be set to UseLF.

As a consequence of this new parameter addition, the EOM
parameter has been deleted.

3.  The CS/200 now accepts from the netmap packet a clock value
that is slower 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 will be changed within
seconds to this new value.

4.  Packet type 9000 is no longer received by the CS/200.  As a
result, no garbage characters will appear when you use the
SHow NetMap command.

.h1;Bugs Fixed

The following problems, which existed in the previous verison of
SW/200-TCP, have been fixed:

1.  In the past, the CS/200 might lose data at disconnection.
This problem has been fixed.

2.  The DTR and DCD signals used to function inconsistently.
This problem has been fixed.

3.  A problem in the SIO software, which made the system crash,
has been fixed.

4.  A problem in the broadband data link driver, which made the
system crash when no system data buffers were available, has
been fixed.

.h1;Known Problems

The following is a list of known problems in SW/200-TCP-NCS/AT
Version 13010:

1.  A connection on the network may become deadlocked with
Communications Servers infinitely exchanging packets that
contain no data.

2.  A connection on the network may occasionally stall for 16
seconds, 32 seconds, or an indefinite period of time because
of the loss of TCP retransmission alarm.

3.  SIO ports configured for eight-bit data are not supported,
because Telnet will not initiate negotiation for binary mode.

.h1;User Interface

SW/200-TCP-NCS/AT Version 13010 includes the following user
interface commands:

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

Assigns Internet addresses to individual physical or rotary
ports.

  - 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
primary Name Server will be queried first for name
resolution.  The primary Name Server's Internet address can
be defined to be on a remote network.

  - SETDefault SecondaryNameServer = <Internet address>

Assigns an Internet address for the secondary Name Server.
The secondary Name Server will be queried if the primary 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/200. Note
that the ARP table 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 does not
communicate with the device within 15 minutes. However, if
the device has moved to a different location, this command
can update the information in the ARP table faster.

.h1;Documentation

The current manuals for the CS/200 running SW/200-TCP-NCS/AT are
listed below:

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

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

 + Connection Service User's Quick Reference Guide (12/85)
 (Part number: 09-0062-00)

 + 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)

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

UNIX is a registered trademark of AT&T.
