Digital Equipment DECserver 90L+ User manual

DECserver90L+
Owner’sManual
Order Number: EK-DSRVG-OM.001

January 1992
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clause at DFARS 252.227-7013.
© Digital Equipment Corporation 1992.
All Rights Reserved.
Printed in U.S.A.
FCC NOTICE: The equipment described in this manual generates, uses and may emit radio
frequency energy. The equipment has been type tested and found to comply with the limits for
a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed
to provide reasonable protection against such radio frequency interference when operated in a
commercial environment. Operation of this equipment in a residential area may cause interference,
in which case the user at his own expense may be required to take measures to correct the
interference.
The following are trademarks of Digital Equipment Corporation: DEC, DECbridge, DECconnect,
DECnet, DECserver, Digital, VMS, LAT, VAX, and the DIGITAL logo.
This document was prepared using VAX DOCUMENT, Version 2.0.

Contents
About This Manual...................................... vii
1 Overview
Features ............................................. 1–1
Quick Start . . . ....................................... 1–2
2 Installing the DECserver 90L+
Standalone Installation . . ............................... 2–1
Mount DECserver 90L+. ............................. 2–1
Remove Cover (if necessary). . . . ....................... 2–3
Make Connections. . . . ............................... 2–4
Verify Ports. ....................................... 2–4
Verify Network. .................................... 2–4
Start Terminal Session. .............................. 2–5
Backplane Installation . . . ............................... 2–5
Remove Cover (if necessary). . . . ....................... 2–5
Mount DECserver 90L+. ............................. 2–6
Verify Ports. ....................................... 2–8
Verify Network. .................................... 2–8
Start Terminal Session. .............................. 2–9
3 Operating the DECserver 90L+
Using a Terminal or Personal Computer .................... 3–1
Establishing a Terminal Session ....................... 3–1
Ending a Terminal Session ........................... 3–2
Last Number Redial . . ............................... 3–3
Interrupting a Terminal Session ....................... 3–3
Resuming an Interrupted Terminal Session ............... 3–5
Cycle Forward from an Interrupted Terminal Session . ...... 3–5
Cycle Backward from an Interrupted Terminal Session ...... 3–5
iii

Disconnecting an Interrupted Terminal Session............ 3–6
Using MOP Console Carrier.............................. 3–6
Operating as a Console Requester ...................... 3–7
Operating as a Console Server . . ....................... 3–7
Using a Printer ....................................... 3–7
DECserver 90L+ Commands ............................. 3–8
DECserver 90L+ Information and Error Codes ............... 3–10
4 Managing the DECserver 90L+
Local Management ..................................... 4–2
Remote Management ................................... 4–2
Accessing MOP from VMS ............................ 4–2
Accessing MOP from ULTRIX . . ....................... 4–4
Security ............................................. 4–5
Management Commands . ............................... 4–6
SET Command ..................................... 4–6
Setting Port Parameters . . . ....................... 4–6
Setting and Clearing Authorized Operation ............ 4–10
Enabling and Disabling AutoConfigure ............... 4–14
Enabling and Disabling Dedicated Service ............. 4–18
Enabling and Disabling Manager Mode ............... 4–22
Enabling and Disabling On-Demand Loading .......... 4–26
Changing Password by Menu ....................... 4–30
Enabling and Disabling Ports ...................... 4–32
Enabling and Disabling Preferred Service ............. 4–36
Setting Server Parameters . . ....................... 4–40
SHOW Command ................................... 4–43
SHOW PORTS . . . ............................... 4–43
SHOW SERVER. . ............................... 4–47
SHOW DEDICATED/PREFERRED SERVICE .......... 4–49
RESET Command . . . ............................... 4–50
Command Line..................................... 4–51
Using a Printer ....................................... 4–54
5 Troubleshooting the DECserver 90L+
iv

A Specifications and Parts List
Physical Dimensions ................................... A–1
Environmental Specifications ............................. A–2
Operating Environment .............................. A–2
Shipping Environment ............................... A–2
Power Specifications.................................... A–3
Power Supply ...................................... A–3
DECserver 90L+ ................................... A–3
Connector Pin Out ..................................... A–3
LAT Specifications ..................................... A–5
Parts List ............................................ A–6
B Related Documentation
Ordering Information . ............................... B–1
Index
Figures
1–1 Sample DECserver 90L+ Connection .............. 1–2
1–2 DECserver 90L+ ............................. 1–4
2–1 DECserver 90L+ Standalone Installation........... 2–2
2–2 Removing the Back Cover of the DECserver 90L+ .... 2–3
2–3 DECserver 90L+ Backplane Installation ........... 2–7
A–1 Port Circuit . . ............................... A–4
Tables
1–1 Supported Terminal Characteristics ............... 1–3
3–1 DECserver 90L+ User Commands . ............... 3–8
3–2 DECserver 90L+ Information and Error Codes ...... 3–10
4–1 Ethernet Circuit Names for VMS-Based Systems .... 4–3
4–2 Ethernet Circuit Names for ULTRIX-Based
Systems .................................... 4–4
4–3 Port Parameters .............................. 4–7
4–4 Server Parameters ............................ 4–40
4–5 Port Status Description . ....................... 4–43
4–6 Command Line recall and editing . ............... 4–53
v

5–1 DECserver 90L+ Troubleshooting . ............... 5–1
A–1 MMJPinOut................................ A–4
A–2 LAT Server Characteristics ..................... A–5
A–3 LAT Port Characteristics ....................... A–6
A–4 Standalone Installation Kit Contents .............. A–6
A–5 DEChub 90 Ethernet Backplane Installation Kit
Contents.................................... A–7
A–6 Related Parts . ............................... A–7
vi

About This Manual
This guide gives an overview of the DECserver 90L+ and describes how to install,
operate, manage, and troubleshoot the DECserver 90L+. This guide also gives
the specifications and related documentation for the DECserver 90L+.
Organization
This guide has five chapters and two appendices.
Chapter Meaning
1 Provides an overview of the DECserver 90L+ including its
features and a quick start procedure.
2 Describes how to install the DECserver 90L+.
3 Describes how to operate the DECserver 90L+.
4 Describes how to manage the DECserver 90L+ locally or from
a remote device on the network.
5 Describes how to troubleshoot the DECserver 90L+.
Appendix A Describes the physical dimensions; environmental, electrical,
and LAT specifications.
Appendix B Provides a list of related documentation and how to order
information.
vii

Conventions
Convention Meaning
italic Indicates a new term or, in command syntax examples, italic words
represent elements of a command for which you supply a value. For
example:
-> service
Return Key names appear in a box.
NOTE Provides general information.
bold text Bold text represents user input. For example:
-> SET Return
<> In a command line, characters in angle brackets <> represent elements
of a command for which you supply a value. For example:
-> <old_password>, <new_password>
[] The characters in brackets [] are optional. For example:
D[ISCONNECT]
viii

1
Overview
This chapter describes the features of the DECserver 90L+ and provides a
summary of the installation procedure.
Features
The DECserver 90L+ contains the following features:
• Easy user interface
• Plug-and-go installation
• Small in size
• Rack mountable in DEChub 90
Ethernet backplane
• Network management through
MOP and TSM (future release of
TSM)
• Dedicated service
• Preferred service
• Programmable prompt
• LAT compatible, V5.0 or higher
• Eight ports
– 1.2 K bits to 38.4 K bits per second
– 8-bit characters
– One stop bit
– No parity
• Four LAT sessions per port
• One outbound maintenance operations
protocol (MOP) session per port
• Command line recall and editing
• On-Demand Loading Font Protocol
• Enable/disable ports
• Printer support, including queuing
• "Send Break" out port
The DECserver 90L+ terminal server is an eight line terminal server that
supports terminals and printers. Each line or port can establish up to a
maximum of four LAT sessions and one MOP session at a time. DECserver 90L+
supports Digital’s Local Area Transport (LAT) protocol and is designed to work in
a ThinWire Ethernet Local Area Network (LAN), as shown in Figure 1–1.
Overview 1–1

Overview
Figure 1–1 Sample DECserver 90L+ Connection
Terminal Personal Computer Printer
DECserver 90L+
Terminal Server
ThinWire Ethernet
Computer 1 Computer 2 Computer 3 Computer N
Terminal
Terminal Terminal Terminal Terminal
LJ-01099-TI0
Quick Start
To install and begin using your DECserver 90L+ is simple. It does not require
any programming or other assistance from system management. After unpacking
the unit:
1. Plug the power supply in a working AC outlet and plug the power connector
from the power supply into your DECserver 90L+.
The green power LED turns on to indicate DC power is getting to the unit.
The green self-test LED turns on to indicate that the unit successfully
completed its internal self-test. The self-test takes approximately five seconds
to complete.
2. Connect the unit to a properly terminated ThinWire Ethernet.
The green network LED turns on to indicate a good connection.
1–2 Overview

Overview
3. Connect a working terminal to one of the terminal ports. Refer to Table 1–1
for supported terminal characteristics.
4. Turn the power on to the terminal and press Return twice to get the
DECserver 90L+ prompt (->).
Pressing Return twice causes the green activity LED to blink and
automatically sets the port’s baud rate.
5. Enter the name of the network node you want to connect to and press Return .
The DECserver 90L+ will display a string of dots ‘‘.....’’, one per second, until
the connection is made.
For more detailed information on installing and using the DECserver 90L+ refer
to Chapter 2, Installing the DECserver 90L+ and Chapter 3, Operating the
DECserver 90L+ of this manual.
Table 1–1 Supported Terminal Characteristics
Characteristic Setting
Transmit speed 1.2K to 38.4K BPS
Receive speed Receive = Transmit
Flow control XON/XOFF or None
Data and parity 8 Bits, No Parity
Stop bits 1
Overview 1–3

Overview
Figure 1–2 shows the DECserver 90L+ and calls out its features.
Figure 1–2 DECserver 90L+
LJ-00072-TI0
6
5
4
3
2
1
78
9
10
1–4 Overview

Overview
! Power Indicator - Turns on when +5 volts is supplied to the unit.
" Self-Test OK Indicator - Turns on when the unit has successfully completed its
diagnostics.
# Network OK Indicator - Turns on when the unit is connected to a properly
terminated network.
$ Activity Indicator - Turns on when data is being transmitted or received by any
of the ports.
% Ethernet Address - Unique physical address of the unit.
& Network Connector (BNC) - Connects unit to the network. Not used when the
unit is installed in the DEChub 90 Ethernet backplane.
' Port Connector (MMJ) - Connect terminals and printers to the DECserver
90L+.
( Power Connector - Provides +5 volts from the DECserver 90L+ power supply.
Not used when the unit is installed in the DEChub 90 Ethernet backplane.
) Backplane Connector - Provides network and power connections to the
DECserver 90L+ when it is installed in the DEChub 90 Ethernet backplane.
+> Cover - Present on standalone units only. Covers the backplane connector and
mounting assembly.
Overview 1–5

2
Installing the DECserver 90L+
The DECserver 90L+ can be placed on a table, mounted to a wall, or installed in
the DEChub 90 Ethernet backplane. Refer to the section Standalone Installation
when installing the unit on a table or mounting it to a wall. Refer to the section
Backplane Installation when installing the unit in the DEChub 90 Ethernet
backplane.
Standalone Installation
To install the DECserver 90L+ as a standalone unit, perform the following
procedures and refer to Figure 2–1.
Mount DECserver 90L+.
Locate and mount the DECserver 90L+. For wall mounting, remove the back
cover on the unit and use the mounting holes on the cover as a template to locate
the mounting screws.
Installing the DECserver 90L+ 2–1

Installing the DECserver 90L+
Figure 2–1 DECserver 90L+ Standalone Installation
LJ-00073-TI0A.DG
50 Ohm
Terminator
T-Connector
Terminal
International
Power Supply
North American
Power Supply
2–2 Installing the DECserver 90L+

Installing the DECserver 90L+
Remove Cover (if necessary).
To remove the back cover of the DECserver 90L+ unit (Figure 2–2):
1. Insert a small screwdriver into the top mounting hole in the cover.
2. Lift up on the latch.
3. While lifting up on the latch, pull the top of the cover away and down from
the unit.
Figure 2–2 Removing the Back Cover of the DECserver 90L+
LJ-00320-TI0
Installing the DECserver 90L+ 2–3

Installing the DECserver 90L+
Make Connections.
1. Plug the power supply into the DECserver 90L+.
2. Attach the Ethernet T-connector to the BNC connector on the DECserver
90L+. Make sure the Ethernet segment is properly terminated at each end.
3. Attach the power cord to the power supply, if needed.
4. Plug the power supply into a working AC outlet.
5. The following indicators should be lit: power, self-test ok, and network.
Within five seconds, the self-test ok indicator should be lit, followed by the
network indicator.
Verify Ports.
Verify the operation of each port by connecting a terminal to the port. Refer to
Table 1–1 for supported terminal characteristics. Press Return twice (autobaud)
to set the operating speed of the port. While watching the Activity LED, type a
character on the terminal. The LED should turn on and off, indicating activity on
the port. Perform this procedure for each port.
Verify Network.
Verify the operation of the network. Enter SHOW S at the prompt (->) and press
Return . The server characteristics screen will verify if the network is "OK" or
"Failed". If "Failed", make sure the server is on a properly configured network.
For more information on the SHOW S command, refer to Chapter 4.
2–4 Installing the DECserver 90L+

Installing the DECserver 90L+
Start Terminal Session.
1. Connect terminals to ports as needed.
2. To start a terminal session using a terminal connected to one of the ports:
a. With the terminal turned on, press Return twice. This sets the baud rate
of the port to that of the terminal.
b. At the prompt (->), enter a service name and press Return .
The DECserver 90L+ responds by displaying a string of dots "......" while
connecting to the selected service. Once the connection is established,
your terminal will display the system-dependent login message or prompt.
Note
The DECserver 90L+ can take up to one minute when connecting to a
node for the first time.
For more information on using the DECserver 90L+, refer to Chapter 3 in this
manual.
Backplane Installation
To install the DECserver 90L+ in the DEChub 90 Ethernet backplane, perform
the following procedures and refer to Figure 2–3.
Remove Cover (if necessary).
If the unit to be installed in the backplane has a cover on the back of the unit,
remove the cover (Figure 2–2).
To remove the back cover on the DECserver 90L+ unit:
1. Insert a small screwdriver into the top mounting hole in the cover.
2. Lift up on the latch.
3. While lifting up on the latch, pull the top of the cover away and down from
the unit.
Installing the DECserver 90L+ 2–5

Installing the DECserver 90L+
Mount DECserver 90L+.
1. Place the lower mounting tab, located on the back of the DECserver 90L+, in
the appropriate mounting slot on the backplane.
Note
The DECserver 90L+ can be installed in an operating DEChub 90
Ethernet backplane (hot-swap).
2. Rock the unit into place. An audible click is heard when the unit is securely
latched in place.
3. With the power applied to the backplane, the following indicators on the
DECserver 90L+ should be lit: power, self-test ok, and network. Within
five seconds, the self-test ok indicator should be lit, followed by the network
indicator.
2–6 Installing the DECserver 90L+