Ref: 99980031
Title: Release Note: CS/100 booting from diskette Ver 20000
Date: 11/17/87

Copyright 3Com Corporation, 1991.  All rights reserved.

Software Release

SW/100-TCP Version 20000

November 17, 1987

Part Number: 86-0020-00
.br;Revision 05


TO:          CS/100 Users

FROM:        Bridge Communications, Inc.

SUBJECT:     SW/100-TCP Version 20000

DATE:        November 17, 1987

Enclosed are the SW/100-TCP Version 20000 software distribution
diskette and the SW/100-T-UTIL Version 20000 utilities
distribution diskette.  These diskettes should only be used to
make backup copies of the software.

This memo describes the procedure for installing the software,
the new features of, and the bugs fixed in this version of
SW/100-TCP.

Compatibility

SW/100-TCP Version 20000 operates with the following products and
software releases:

.br;CS/1 running SW/100-TCP Version 11000 or later
.br;CS/1 running SW/20-TCP Version 20000 or later
.br;CS/1-SNA running SW/1-SNA-T Version 10000 or later
.br;CS/50 running SW/50-TCP Version 13010 or later
.br;CS/200 running SW/200-TCP Version 13000 or later
.br;IVECS running SW/IVECS-TCP Version 13000 or later
.br;NCS/150 running SW/150-NCS-TCP Version 10000 or later
.br;NCS/AT running SW/AT-NCS Version 10000 or later
.br;GS/3 running SW/3-IP Version 10000 or later
.br;Personal computer running TCPTerm Version 10000 or later
.br;Personal computer running SW/1-PCS Version 10000 or later

Table 1 illustrates the firmware and software compatibility of
SW/100-TCP Version 20000 and SW/100-T-UTIL Version 20000:

''
_________________________________________________
|    Table 1  Software/Firmware Compatibility    |
|________________________________________________|
| Product|    Software   |        Firmware       |
|        |               |                       |
|        |               |     SIO         MP    |
|        |               |                       |
| CS/100 |  SW/100-TCP   |  T0ASYN 1B   T1MMON 2A|
|        |  SW/100-T-UTIL|  or later    or later |
|________|_______________|_______________________|


Installation

Before running the software, you should use the following
procedure to make a backup copy of SW/100-TCP Version 20000:

1.  Connect your terminal to port 0.

2.  Insert the SW/100-T-UTIL Version 20000 distribution
diskette in the CS/100 disk drive, then press the Reset
switch.  When the utilities diskette has finished booting,
press the following sequence on the keyboard:
<RETURN>.<RETURN>

3.  To copy the SW/100-TCP Version 20000 distribution diskette,
enter 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
Disk #n (hit <CR> to continue, q to quit)

5.  Insert the SW/100-TCP Version 20000 distribution diskette.

6.  After you press the Return key, the following messages
appear on the screen if the read completes successfully:
Reading ... OK Insert copy #n (hit <CR> to continue, q to
quit)

7.  If the message "read error" appears instead of the message
"OK", contact an authorized Bridge service representative
for assistance.

8.  Remove the distribution diskette.  Insert a 48 TPI, blank,
double-sided diskette in the CS/100 disk drive.  Then press
the Return key.

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

10.  Remove the newly-created copy and label it "SW/100-TCP
Version 20000".  Store the distribution copy of SW/100-TCP
Version 20000 in a safe place.
After the software is installed, you will have to redefine the
global parameters, rotary's Internet addresses, port's Internet
addresses, Primary Name Server, Secondary Name Server, Default
Gateway, and resysgen the software to define the server's
Internet address and other sysgen parameters.



New_Features

The following features, which were not present in SW/100-TCP
Version 13000 or earlier, have been implemented in SW/100-TCP
Version 20000.  For detailed information on the features,
examples, and screen displays, refer to the Connection Service
User's Guide.

1.  A new User Interface command, PIng, is available to
generate an Internet Control Message Protocol (ICMP) echo
request message to a specified host.  If the echo request
message is sent to a Communications Server running software
version 13000 or earlier, or a host which does not handle
ICMP ECHO requests, the following message will appear:
PINGing ... Host is not responding

2.  SW/100-TCP Version 20000 now handles and responds to
appropriate incoming ICMP messages.

3.  The CS/100 now processes Internet packets with Internet
option information.

4.  The CS/100 now reassembles fragmented Internet packets.

5.  A new parameter, NetMapBroadcast, has been added to
SW/100-TCP.  It controls the transmission of netmap
broadcast packets from the CS/100.

6.  SW/100-TCP Version 20000 supports a receive window size of
1024 bytes to facilitate large-scale data transfers.

7.  In addition to cleaning up the contents of the ARP table,
the ZeroArp command clears out the gateway table stored in
the server as well.

8.  A new global parameter, MacType, has been added.  Its
possible values are IEEE and Enet.

This parameter determines the protocol used at the Media
Access Control (MAC) level.  The default value is Enet,
which is compatible with other Bridge Ethernet and
Broadband products.  IEEE refers to the use of the 802.3
and SNAP protocols.

9.  A new sysgen parameter, the Skip Dead Ports parameter, has
been added to the Virtual Terminal Parameters menu in the
sysgen program.  This parameter determines how a host
server processes a connect request.

The host enables a port by keeping the Data Terminal Ready
(DTR) signal raised.  If the Skip Dead Ports parameter on
the host server is 1, the host server will repeat the



connect request when a port with DTR low is encountered.
The request will be repeated until an enabled port is found
or all rotary ports have been tried.  If the parameter is
set to 0, a connection request is considered to have failed
as soon as a disabled port is encountered.

The default value of this parameter is 1.

10.  If another Communications Server or any host on the network
has the same Internet address as the server to which you
are connected, it is considered an address collision.

Previously, address collisions were not reported.  Now the
SHow ARptable command displays a modified arptable
indicating addresses that are involved in a collision.

Also, after an address collision, the audit trail record
shows the Internet address and Ethernet address of the
Communications Server or host that causes the collision.
The type of this audit trail record is "AC".

The format for the audit trail record generated after an
address collision is as follows: MM.DD HH.MM.SS
III.III.III.III  AC  CCC.CCC.CCC.CCC %08000200HHHH In the
audit trail record above, "AC" is the type of the record.
"III.III.III.III" is the source Internet address.
"CCC.CCC.CCC.CCC" and "%08000200HHHH" are the Internet
address and Ethernet address that cause the collision.

11.  A new sysgen parameter called Maximum Number of SYNC
Retransmissions has been implemented.  It determines the
length of time within which a CS/100 will try each entry in
a global rotary.

The parameter can be altered on the TCP Parameter menu.
The default value is 4, the minimum 2, and the maximum 20.

The more unreliable your network, the greater the Maximum
Number of SYNC Retransmissions should be.

12.  It used to be difficult to identify the connect/disconnect
pair in an audit trail record for a given session.  Now the
connect and disconnect audit trail records indicate the
port numbers and session numbers to identify the pair.

Also, the CF (Connect Fail) audit trail record is generated
for a connect request that contains more than one address
in the address list.

The new format of the Connect audit trail record is as
follows.  MM.DD HH.MM.SS III.III.III.III.  N NN CD
CCC.CCC.CCC.CCC The new format of the Disconnect audit



trail record is as follows: MM.DD HH.MM.SS III.III.III.III.
N NN DC CCC.CCC.CCC.CCC In the audit trail records above,
"N" is the session number, and "NN" is the port number.

13.  The Connect command has been modified to allow the
Precedence level and Type of service parameters to be
specified.  It also allows specification of multiple
addresses and the destination TCP port number.

14.  Previously, setting the LongBreakAction parameter to InBand
or OutofBand did not generate actions.  Now if you set
LongBreakAction to InBand or OutofBand, it will generate
Telnet signals exactly the same as BReakAction.

15.  A new session parameter, XmitBinary, is implemented.  Its
default value is OFF, which limits transmission to seven-
bit ASCII data.  If XmitBinary is ON, it allows you to have
an eight-bit data path in your Telnet session with the
host.  However, this is possible only if the DataBits
parameter is set to 8.

16.  If the Internet address of a Communications Server has not
been initialized, its Internet address will be
000.000.000.000.  A server with this address will
disconnect itself from the network.  The terminal attached
to this server still works, but any command related to the
network (e.g., Connect, REMote) will result in the "timeout
failure" error message.

17.  SW/100-TCP Version 20000 supports a domain name resolver,
which can be used to translate names to Internet addresses.
A new global parameter, NsType, has been added. Its
possible values are IEN116 and DomainName.  It determines
whether the domain name resolver or the IEN116 name service
is used for address translation.

Related to the NsType parameter is the NameServer
parameter, which is a new kernel parameter in the Sysgen
program.  Its possible values are 0, which selects the
IEN116 name service, 1, which selects the Domain name
service, and 2, which allows both to be used as the name
service.  If the value is 0 or 1, you cannot change the
name service by setting the NsType parameter.  Only when
NameServer is 2 can you use NsType to select the name
service for resolving names.

When the NsType parameter is set to DomainName, the syntax
for the SHow NAme command is as follows: SHow Name [<Domain
name>] [* [.] [<Target>]]

18.  Because space in the UI globals file has been allocated to
new global parameters, the Internet address information has



been moved from the globals file to a newly created file.

If you use an NCS as the file server, you may notice a file
called "/GLOBALS/ipadr.C009C8D0", where C009C8D0 is an
example of the Internet address of the CS/100.  It is
created when SW/100-TCP Version 20000 is booted for the
first time.  This change has no effect on your interface
with the CS/100.

19.  LF is now treated as a command delimiter for the Bridge
User Interface.  Therefore, both CR and LF will be
recognized as the end of the command line.

20.  You can define macros containing conditional statements on
the CS/100 running SW/100-TCP Version 20000.

21.  The SHow AllSession command displays a list of names (and
optionally physical addresses) to which the terminal ports
are connected.

The command also shows the address of the other end of the
connection when it is a passive-end connection or an
interconnection.

22.  Data is usually folded modulo 128 for control character
detection.  However, on some eight-bit extended ASCII
terminals, control characters such as XON and XOFF have
unique representations within the 256-character set.  They
should not be folded before being sent to the User
Interface or being recognized by the SIO processor.

SW/100-TCP Version 20000 enables you to override the data
folding by setting PARIty to a new option called DoNotFold.
You can select this option in conjunction with None, Even,
or Odd parity.  For example, you can type: setd PARIty =
Even DoNotFold Because of this new option, it is now
possible to use eight-bit control characters with or
without parity.  The DoNotFold option, however, should be
used only when the DataBits parameter is set to 8.  To
reset the special PARIty option, type: setd PARIty = 0 When
the DoNotFold option is set, the control characters sent
over the network from the CS/100 are taken to be eight bits
long.  Only a single character is recognized as ECM, BREAK,
XON, XOFF, or EDIT.

For example, with the DoNotFold option, the character
encoded as 00010001 will be recognized as XON, and the
character encoded as 10010001 will be passed as data.
Without the DoNotFold option, both bit patterns will be
interpreted as an XON character, because the uppermost bit
is ignored.



This feature only functions with CS/100 boards equipped
with T0ASYN Revision 18C or later.

23.  SW/100-TCP now supports universal time for network
communications spanning different time zones.  Two new
global parameters have been implemented to support this
feature.

The DaylightSavingsTime parameter specifies the
displacement, in minutes, from non-Daylight Savings Time.
The TimeZone parameter specifies the displacement, in
minutes, west of Greenwich the server's site is located.

However, the NCS/150 and NCS/AT do not support this
feature.  If you have an NCS on the network, it is
recommended that the time on the CS/100 be kept in Pacific
Standard Time.

24.  A new global parameter, AUditTrailType, is implemented.  It
specifies the format of the time-stamp for audit trail
messages.  The two formats are Local time and Universal
time.

Bugs_Fixed

The following problems, which were found in SW/100-TCP Version
13000 or earlier, have been fixed in SW/100-TCP Version 20000:

1.  Setting the NetAscii parameter of a port to UseNul no
longer causes spurious ^A characters to be inserted in the
data stream sent to that port.

2.  Previously, if the ECHOMask included control characters,
some characters (e.g., backspace) did not function normally
in Command mode.  SW/100-TCP Version 20000 has fixed this
problem.  If you include a control character in the
ECHOMask, type "res" and then enter the ECM character.
Editing in Command mode will return to normal.

3.  Previously, when a host was flow-controlled, a terminal,
even in command mode, would not function after you had
entered four characters from the keyboard. It would be
locked up until the host terminated the flow control or the
network manager used the Listen command on the port.

Now, if the same situation occurs, you can enter the ECM
character to continue the operation of the terminal,
because the ECM character will be processed as an out-of-
band signal.

This feature only functions on CS/100 boards equipped with
T0ASYN Revision 18C or later.



4.  A problem that previously caused a connection to jam and
CS/100s to infinitely exchange old packets has been
corrected.

5.  Several problems relating to stalling during data transfer
have been fixed.

6.  The retransmit alarm now functions correctly to ensure
proper connections.

7.  The SHow STAT <Hour> command displays statistics for the
time specified.  Previously, the displayed statistics were
for one hour earlier than the time requested.

8.  If BReakAction is set to InBand, the break signal from your
keyboard will be mapped to the Telnet interrupt process
(IP) signal.  If BReakAction is set to OutofBand, it will
be mapped to the Telnet break signal (BREAK).  If
BReakAction is set to both InBand and OutofBand, both the
IP signal and BREAK are generated.

Limitations

The following are the limitations of SW/100-TCP Version 20000:

1.  The increase in size of the SW/100-TCP software image may
reduce the maximum number of sessions in the CS/100,
depending on the data link configurations.

2.  At the time when a connection is made, the routes are
established using the default gateway.  Changing the
default gateway after connection does not affect the
already established routes.

You can, however, use the ZeroArp command to clear out the
gateway table stored in the server.

Known_Problems

The following is a list of known problems in SW/100-TCP Version
20000:

1.  If the remote end of an inactive session is disconnected,
the SHow SESsions and SHow AllSessions commands still show
that the local end is connected.  The disconnection message
only appears if a user resumes that session.  This problem
does not occur on an active session.

2.  When you use the IEN116 Name Server, a network manager
command (e.g., SHow (<name>) VERSion) will not operate
correctly if <name> is not defined on a primary Name Server
but on a secondary Name Server.  In such a case, the CS/100



may crash.

Documentation

For further information on the CS/100 and network planning, refer
to the following manuals:

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

+ Series/100 Installation Guide (10/85)
(Part Number: 09-0023-02)

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

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

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

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

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


