Ref: 99980865
Title: SW/IVECS-TCP-NCS/AT Version 13010
Date: 6/26/87

Copyright 3Com Corporation, 1991.  All rights reserved.

Part Number: 86-0111-00
Revision 00

Overview

The Integrated VAX Ethernet Communications Server (IVECS) is a
single board that allows a VAX running the VMS, UNIX 4.2 BSD, or
UltrixTM operating system to attach directly to an Ethernet Local
Area Network (LAN).  IVECS permits up to 48 connections to the
VAX over the Ethernet.

The IVECS operating software is fully compatible with all other
Bridge products that utilize the Transmission Control
Protocol/Internet Protocol (TCP/IP).  Operating software for
IVECS is loaded from a Bridge NCS/150 or NCS/AT.  The IVECS
supports the audit trail service, which gathers and records
session information such as connections attempted, whether
successfully completed, or disconnected.

.h1;Installing SW/IVECS-TCP-NCS/AT on the NCS/AT

Because SW/IVECS-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.  If you want to boot the IVECS from an NCS/
AT, you must first copy the software from the SW/IVECS-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/IVECS-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/IVECS-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;New Features

If you have been using SW/IVECS-TCP Version 13000 or earlier,
note that the following features have been added to the IVECS
software in SW/IVECS-TCP-NCS/AT Version 13010:

1.  Permanent Virtual Circuits (PVCs) are supported.  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 only be defined 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 commands 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 circuit for
portid.

2.  The ARP-based routing has been improved.  When a packet is
transmitted to a destination with a different network number
in its address, an initial route is set up using the default
gateway.  If the default gateway is zero when such an initial
transmission is made, SW/IVECS-TCP-NCS/AT Version 13010 will
attempt to resolve the address on the local segment via an
ARP request.

3.  When you remote to the IVECS, you can now define macros by
using the DEFine command.  However, the macro prompt will not
appear.  Each command in the macro except the last command
must end with a backslash (\).

Example:
ivecs prompt# DEFine macroname = (\ command 1 \ command 2 \
 . \           . \ ) ivecs prompt#


.h1;Corrections in the IVECS Installation Guide

Due to a memory limitation in SW/IVECS-TCP-NCS/AT Version 13010,
Table 3-4 on page 3-10 of the IVECS Installation Guide should
read as follows:

 ________________________________________
|                Table 3-4               |
|       Maximum Recommended Number       |
|    of DMF32s to be Emulated by IVECS   |
|________________________________________|
|    VAX Type       DMF32s to be Emulated|
|                                        |
| 11/730            2                    |
| 11/750            6                    |
| 11/780            10*                  |
| 11/785            10*                  |
| 8200              10*                  |
| 8500              16*                  |
| 8700              24*                  |
| 8800              32*                  |
|                                        |
|     * Requires more than one IVECS     |
|________________________________________|

Table 4-6 on page 4-27 of the same manual, which shows the
configuration of the DMF32 board shorting plug positions, should
read as follows:

 _________________________________________________
|                    Table 4-6                    |
|  DMF32 Board Emulation Shorting Plug Positions  |
|_________________________________________________|
| Number of DMF32 Boards        Shorting Plug     |
|                             3-4          5-6    |
|                                                 |
|           2                  In           In    |
|           4*                Out           In    |
|           6                  In          Out    |
|                                                 |
|                * Factory default                |
|_________________________________________________|

.h1;Limitations

SW/IVECS-TCP-NCS/AT 13010 has the following limitations:

1.  It supports no more than 48 sessions.

2.  Internet addresses can only be defined for rotary ports.  In
order to establish a connection to the IVECS, virtual ports
should be grouped in the rotary and an Internet address will
then be assigned to the rotary using the command described in
the User Interface section.

3.  IVECS with TCP/IP can emulate up to six DMF32s.

.h1;User Interface

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

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

Assigns Internet addresses to rotary ports.

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

Removes the Internet address of a rotary port.

- SETDefault DefaultGateway = <Internet address>

Allows all remote net packets to be sent to the 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

Displays the Internet address of the IVECS itself and all
other Internet addresses associated with the IVECS (rotary
ports).

- SHow InternetServers

Displays Internet addresses of the Name Servers and Default
Gateway.

- SHow VirtualPorts

This command is the same as the SHow AllSessions command.

- SHow ARptable

Displays the mapping between Internet addresses and Ethernet
addresses of devices that communicate with the IVECS.  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
serves the purpose of updating the information in the ARP
table faster.

.h1;Known Problems

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

1.  Some VAX configurations may inhibit IVECSs from booting
properly from the NCS/AT. If this problem occurs, please
contact an authorized Bridge service representative for
assistance.

2.  If the Permanent Virtual Circuits are set to a nonexistent or
inaccessible Internet address, the IVECS' Remote mode can
only work the first 30 seconds of every minute.

3.  If an interconnection is made to a busy port, the erroneous
message "Interconnection formed" is displayed.

4.  If as a result of user action, the IVECS flow controls a VAX
running VMS for more than 30 seconds, the connection may lose
data.

5.  Remote reboot does not work if the PROM on the MP board is
U1MMON 03F or earlier.

6.  If a field in the Internet address of the IVECS is 0 (e.g.,
1.0.2.3), the Internet address cannot be used as a PVC
parameter value.  You can avoid this problem by using the
NAme command to define a name for such an address, then using
the name in the PVC parameter field.

.h1;Miscellaneous Notes

1.  The VMS diagnostics facility provided by Digital Equipment
Corporation for the DMF32 cannot be used for the IVECS.

2.  In order for printers to work properly, the UseDTRin
parameter in the IVECS port configuration should be set to
AsDTR and the VAX port configuration should be set to
"term/modem".

.h1;Port Parameter

IVECS port parameters can be altered with the global network
manager privilege if you remote to the IVECS.  A network manager
with global network manager privilege can set these port
parameters via the REMOTE command.

The alterable port parameters have the following default values:

- AUToDisconnect = 60

- PermanentVC = ""

- UseDCDout = OnConnection

- UseDTRin = AsDTR

- BReakAction = Ignore

- FlowControlFrom = XonXoff

- Flow ControlTo = XonXoff

- IdleTimer = 5

- BUffersize = 82

- XON = ^Q, XOFF = ^S

The parameters FlowControlFrom and FlowControlTo indicate the
flow control mechanism used by the IVECS to the host and by the
host to the IVECS.

The values of the BAud, DataBits, StopBits, and PARIty parameters
are set by the VAX and cannot be altered.  Also, the LinePRotocol
parameter is set to asynchronous and cannot be changed.

On most UNIX systems the FlowControlFrom parameter can be set to
None since flow control is handled by interrupts.  This will
improve performance and reduce the VAX CPU's overhead.

.h1;Compatibility

SW/IVECS-TCP-NCS/AT can operate with the following Bridge
products and software releases:

 NCS/150 running SW/150-NCS-TCP Version 10000 or later
 NCS/AT running SW/AT-NCS Version 10000 or later
 CS/1 running SW/1-TCP Version 11000 or later
 CS/1-SNA running SW/1-SNA3270 Version 10000 or later
 CS/100 running SW/100-TCP Version 11000 or later
 CS/200 running SW/200-TCP Version 13000 or later
 GS/3 running SW/3-IP Version 10000 or later
 TCPTerm Version 10000 or later

Table 1 illustrates software and firmware compatibility for
SW/IVECS-NCS/AT Version 13010:

 _______________________________________________________
|        Table 1  Software/Firmware Compatibility       |
|_______________________________________________________|
| Product     Software                Firmware          |
|                                                       |
|                               MP             IO       |
|                                                       |
| IVECS     SW/IVECS-TCP-   U1MMON 02A   MICROMACHINE 02|
|           NCS/AT          or later     (DMF-A-005)    |
|                                        or later       |
|_______________________________________________________|

.h1;Documentation

The current versions of the manuals for the IVECS are listed
below:

+ IVECS Installation Guide (11/85)
 (Part number: 09-0058-00)

+ 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)

+ NCS/AT Installation and Operation Guide (3/87)
 (Part number: 09-0092-00)

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

UNIX is a registered trademark of AT&T.
 VAX and VMS are registered trademarks of Digital Equipment
Corporation.
 Ultrix is a trademark of Digital Equipment Corporation.

