LES2700A-16&32
LES Installation Guide
For LES2700A-16, LES2700A-32,
and LES2700A-422 Terminal Servers
LES Terminal Servers
Contents
1.0 Introduction ............................................................................. 1
1.1 Supported Serial Protocols ..................................................................1
1.1.1 RS-232.................................................................................1
1.1.2 RS-423.................................................................................1
1.1.3 RS-422.................................................................................2
1.2 How to Use This Manual.....................................................................2
2.0 Installation............................................................................... 3
2.1 LES Product Descriptions ...................................................................3
2.1.1 LES2700A-16 Front Panel ..................................................3
2.1.2 LES2700A-32 Front Panel ..................................................3
2.1.3 LES2700A-422 Front Panel ................................................4
2.1.4 LES LEDs............................................................................4
2.2 Installing the LES ................................................................................5
2.3 Was the Installation Successful? .........................................................6
3.0 Getting Started........................................................................ 7
3.1 Configuration Methods........................................................................7
3.1.1 NetSet ..................................................................................7
3.1.2 Using a Web Browser..........................................................7
3.1.3 Incoming Logins..................................................................8
3.1.4 Console Terminal ................................................................8
3.2 Services................................................................................................8
4.0 Using the LES ......................................................................... 9
4.1 Console Server Example .....................................................................9
4.1.1 Define the Menus ..............................................................10
4.1.2 Enable Menu Mode ...........................................................12
4.1.3 Configure Switches ...........................................................12
4.1.4 Using Menus......................................................................13
4.2 Serial Tunnel Example ......................................................................15
4.2.1 TCP Configuration ............................................................15
4.2.2 UDP Configuration............................................................16
4.2.3 Multi-port Serial Tunnel Configuration ............................16
4.3 Comm Port Redirector.......................................................................16
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LES Terminal Servers
5.0 TCP/IP Configuration ............................................................ 17
5.1 Setting the IP Address .......................................................................17
5.1.1 Using NetSet......................................................................17
5.1.2 Using a Directed Ping Packet ............................................17
5.1.3 Using a BOOTP, DHCP, or RARP Reply.........................19
5.1.4 Using the Command Line Interface...................................19
5.2 LPR Printing ......................................................................................19
5.2.1 LPR on Windows NT 3.5.1 (and later)..............................20
5.2.2 LPR on Windows 95/98 ....................................................23
5.2.3 LPR on UNIX Hosts..........................................................23
5.2.4 LPR on AIX Hosts.............................................................24
5.2.5 LPR on HP Hosts...............................................................25
5.2.6 LPR on SCO UNIX Hosts .................................................26
5.2.7 RTEL Functionality...........................................................27
5.3 Unix Host Troubleshooting ...............................................................28
6.0 NetWare Configuration ......................................................... 29
6.1 NDPS Printing ...................................................................................29
6.2 Configure your LES...........................................................................29
6.3 NetWare Administrator Quick Setup Print Queues...........................30
6.4 PCONSOLE Print Queues.................................................................31
6.5 NetWare Host Troubleshooting.........................................................31
7.0 LAT Configuration ................................................................. 35
7.1 Printing Directly to a Port..................................................................35
7.2 LAT Host Troubleshooting................................................................36
8.0 AppleTalk Configuration........................................................ 37
8.1 Bitronics.............................................................................................37
8.2 Macintosh Services............................................................................37
8.3 AppleTalk Zones ...............................................................................37
8.4 AppleTalk Host Troubleshooting ......................................................38
9.0 DLC Configuration for LAN Manager .................................... 39
9.1 DLC Configuration............................................................................39
9.1.1 LES Configuration.............................................................39
9.1.2 Host Configuration ............................................................39
A: Contact Information ...............................................................A-1
A.1 Problem Report Procedure............................................................. A-1
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LES Terminal Servers
B: Troubleshooting.....................................................................B-1
B.1 Power-up Troubleshooting..............................................................B-1
B.2 DHCP Troubleshooting ..................................................................B-2
B.3 BOOTP Troubleshooting ................................................................B-3
B.4 RARP Troubleshooting...................................................................B-3
B.5 Modem Configuration Checklist.....................................................B-4
B.6 Entering Commands at the Boot Prompt ........................................B-4
C: Pinouts ................................................................................. C-1
C.1 Ethernet Connector .........................................................................C-1
C.2 RJ45 Serial Connectors...................................................................C-1
C.2.1 RJ45 to DB25..................................................................C-2
C.2.2 RJ45 to DB9....................................................................C-3
C.3 LES2700A-422 Serial Connectors..................................................C-4
D: Updating Software................................................................ D-1
D.1 Choosing the Right Software File.................................................. D-1
D.2 Obtaining Software ........................................................................ D-1
D.3 Reloading Software ....................................................................... D-1
D.3.1 Reloading Sequence ...................................................... D-2
D.4 Troubleshooting Flash ROM Updates ........................................... D-3
E: Specifications ........................................................................E-1
E.1 Power Information .......................................................................... E-1
E.1.1 Power Requirements ....................................................... E-1
E.1.2 Power Supply Cord ......................................................... E-1
E.2 Environmental Limitations.............................................................. E-1
E.2.1 Temperature .................................................................... E-1
E.2.2 Altitude ........................................................................... E-2
E.2.3 Relative Humidity ........................................................... E-2
F: Frequently-used Commands ................................................. F-1
F.1 Conventions..................................................................................... F-1
F.2 Server Commands ........................................................................... F-2
F.3 Port Commands ............................................................................... F-5
F.4 Protocol Commands ........................................................................ F-7
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LES Terminal Servers
Declaration of Conformity
FCC Requirements
For Telephone-Line Equipment
Certification Notice For
Equipment Used In Canada
Federal Communications Commission
And
Canadian Department of Communications
Radio Frequency Interface Statements
Index
iv
Chapter 1.0: Introduction
1.0 Introduction
The Black Box LES2700A-16, LES2700A-32, and LES2700A-422 are terminal servers
that provide shared network access to terminals, devices, console ports, and printers for
a variety of network protocols and operating systems. The LES supports the TCP/IP, IPX
(NetWare), Local Area Transport (LAT), AppleTalk (EtherTalk), and Microsoft LAN
Manager protocols.
Note:
In this manual, all LES servers will be referred to as “the LES” unless a distinction needs to be made between models.
The LES stores its executable software in Flash (rewritable) ROM, meaning that it does
not have to download software from a host each time it boots. Software must only be
downloaded when a new software version becomes available. See Appendix D for more
information.
1.1 Supported Serial Protocols
The LES models support the RS-423/232 serial protocol, and the LES2700A-422
supports the RS-422 serial protocol.
1.1.1 RS-232
The RS-232 line interface standard is a single-ended peer-to-peer interface. Today’s
personal computers typically have at least one RS-232 serial port. It is the most common
serial protocol used today.
RS-232 is used for connecting devices across short distances at speeds up to 230.4 kb/s.
Faster speeds require shorter cabling to ensure error-free communication. The maximum
cable length at a given speed is determined by many factors, including the immediate
electrical environment and the quality of cable used, but is usually less than 15 meters at
high speeds.
1.1.2 RS-423
All of the LES models support the RS-423 line interface standard. RS-423 devices are
interoperable with RS-232 devices. That is, RS-232 ports can receive data reliably from
RS-423 ports and vice-versa.
The main difference between RS-423 and RS-232 is that RS-423 employs lower voltage
signaling and differential receivers. RS-423 still uses single-ended transmitters for
compatibility with RS-232 receivers.
RS-423 is generally rated at higher speeds over longer cabling runs than RS-232.
Maximum data rates of 230.4 kb/s are possible on LES models.
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LES Terminal Servers
1.1.3 RS-422
The LES2700A-422 supports RS-422 on all of its ports. RS-422 is different from RS-232
or RS-423 in that it is a differential or balanced line interface standard. It is designed for
longer cabling distances (approaching 4,000 feet) in noisier electrical environments, and it
can be used in multi-drop networks with one driver and up to ten receivers.
The maximum speed of LES2700A-422 RS-422 ports is 230.4 kb/s, but this rate can be
sustained over longer cable runs than possible on RS-232 or RS-423 connections.
1.2 How to Use This Manual
This guide is structured as follows:
◆
Chapter 2.0, Installation explains how to physically install the LES.
◆
Chapter 3.0, Getting Started explains the minimum configuration needed.
◆
Chapter 4.0, Using the LES explains some of the ways that you can use your LES.
◆
Chapters 5 through 9 cover protocol-specific setup needed to install print queues and
otherwise use the LES.
◆
❍
Chapter 5.0, TCP/IP Configuration
❍
Chapter 6.0, NetWare Configuration
❍
Chapter 7.0, LAT Configuration
❍
Chapter 8.0, AppleTalk Configuration
❍
Chapter 9.0, DLC Configuration for LAN Manager
Appendices A through F provide supplementary information.
❍
Appendix A, Contact Information
❍
Appendix B, Troubleshooting
❍
Appendix C, Pinouts
❍
Appendix D, Updating Software
❍
Appendix E, Specifications
❍
Appendix F, Frequently-used Commands
Read chapters 2 through 4 in order, then proceed to the protocol-specific chapter that relates
to your network. Refer to Appendix F as needed. The Terminal Server Reference Manual,
located on the CD-ROM and web site, provides additional information about configuring
and using your LES.
2
Chapter 2.0: Installation
2.0 Installation
This chapter describes the various LES models and shows how to install them into a basic
network situation.
2.1 LES Product Descriptions
2.1.1 LES2700A-16 Front Panel
The LES2700A-16 has 16 RJ45 serial ports, a Reset button, an AUI Ethernet port, an
RJ45 Ethernet port for 10/100BASE-T, several LEDs, and a power switch.
Figure 2.1 LES2700A-16 Front Panel
receive
activity
transmit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
reset
ok
100
link
power
10/100
# aui
The first RJ45 port is also the serial console port; however, in most
situations connecting a terminal to this port will not be necessary.
Note:
2.1.2 LES2700A-32 Front Panel
The LES2700A-32 has 32 RJ45 serial ports, a Reset button, an AUI Ethernet port, an
RJ45 Ethernet port for 10/100BASE-T, several LEDs, and a power switch.
Figure 2.2 LES2700A-32 Front Panel
17-32
activity
1-16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
reset
Note:
# aui
ok
100
link
power
10/100
The first RJ45 port is also the serial console port; however, in most
situations connecting a terminal to this port will not be necessary.
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LES Terminal Servers
2.1.3 LES2700A-422 Front Panel
The LES2700A-422 has 16 DB9 serial ports, a Reset button, an AUI Ethernet port, an RJ45
10/100BASE-T Ethernet port, several LEDs, and a power switch. In addition, port 1
includes a switch to set the port for RS-422 or RS-232 mode.
Figure 2.3 LES2700A-422 Front Panel
receive
activity
transmit
2
4
6
8
10
12
14
16
1
3
5
7
9
11
13
15
ok
100
link
power
RS232
port1
RS422
Note:
reset
# aui
10/100
The first DB9 port is also the serial console port.
2.1.4 LES LEDs
Each LES has a total of 37 LEDs. Each serial port has one (LES2700A-32) or two
(LES2700A-16 and LES2700A-422) corresponding LEDs that indicate receive and
transmit activity, and there are five LEDs on the right side of the case. Their functionality
is shown in Table 2-1.
Table 2-1: LES Port LED Functionality
4
LED
Function
activity
Blinks to indicate Ethernet activity.
ok
Blinks to indicate that the LES is functioning properly.
100
Lights to indicate a 100BASE-T rather than 10BASE-T Ethernet link
link
Lights to indicate a functional Ethernet network link
power
Lights to indicate the LES has power
Chapter 2.0: Installation
2.2 Installing the LES
The following diagram shows a properly-installed LES2700A-16. Installation will
generally be the same for all LES models, the only difference being the type of serial ports
available. See LES Product Descriptions on page 2-1 for more information.
Figure 2.4 Sample LES Network Layout (LES2700A-16 shown)
LES2700A-16
5
2
3
10/100BASE-T
Ethernet
4
Modem
Serial Printer
Console Terminal
Terminal
To install the LES, complete the following steps in order.
1
Attach the two rack mount brackets to your LES and attach your bracketed LES to
your rack. The brackets should go on both front corners or both rear corners. (This
is only necessary if you would like to mount the unit on a rack.)
Figure 2.5 Rack Mount Bracket Installation
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LES Terminal Servers
2
Connect one or more serial devices to the LES serial ports.
See Appendix C, Pinouts, for information about what kinds of device attachments
the LES supports.
3
Connect an Ethernet cable to either the 10/100BASE-T port (shown) or a transciever connected to the AUI port.
The LES will boot without a valid Ethernet connection, but it will pause to print a
message asking if you want to stop at the Boot> prompt. If you do not respond to
this message, it will wait for 10 seconds and then finish booting.
4
If desired, connect a terminal to the LES console port (port 1). This will enable you
to receive diagnostic and initial configuration messages.
Note:
The default serial port settings are 9600 baud, 8 bit characters, and no
parity.
5
Attach one end of the power cable to the LES and plug the other end into an electrical
outlet.
6
Flip the power switch to the ON position. The LES will go through two steps to begin normal operation:
7
A
It runs through a set of power-up diagnostics for approximately 12 seconds. The
LEDs show varying patterns corresponding to the tests being run.
B
It tries to obtain TCP/IP configuration information via DHCP, BOOTP, and
RARP. This may take as long as 15 seconds if no hosts answer the requests.
During this step, the OK LED blinks approximately 3 times per second and the
NET LED blinks occasionally.
Install NetSet on your 32-bit Windows PC, Apple Macintosh, or Solaris computer.
The NetSet software is located on the distribution CD-ROM.
2.3 Was the Installation Successful?
If the LES appears to be working and the unit is connected to the network, there are a couple
of ways to confirm that the unit is visible to network hosts:
◆
If the LES has an IP address, ping it from a TCP/IP host.
◆
If the LES has an IP address, use NetSet to log into it.
◆
If the LES does not have an IP address, assign one by following the instructions in
Section 5.1 on page 5.0-17.
When you are satisfied that the LES is working properly, proceed to Chapter 3.0, Getting
Started. If the LES does not boot properly, see Appendix B, Troubleshooting.
6
Chapter 3.0: Getting Started
3.0 Getting Started
It is important to consider the following points before logging into and configuring the
LES:
◆
You must configure the LES IP address before any TCP/IP functionality is
available. (See Setting the IP Address on page 5.0-17) You cannot use the
ThinWeb Manager until you have configured an IP address.
◆
Changing any server, service, or port setting requires privileged user status. The
default privileged password is system.
◆
The login password is required for remote console logins. The default login password is access.
Note:
3.1
If you would like to change either the privileged or login password,
either use NetSet or refer to the Terminal Server Reference Manual
located on the CD-ROM.
Configuration Methods
3.1.1 NetSet
The NetSet configuration software is the recommended way to configure the LES.
NetSet’s graphical user interface guides first time users through the initial configuration
process and allows experienced users to update any configurable parameters.
NetSet requires a Java Virtual Machine (JVM) on the client. Black Box provides JVM
installers for Solaris and 32-bit Windows users, as well as source code and instructions
for compiling it for other systems.
The NetSet software is located on the distribution CD-ROM. All instructions for
installing NetSet are provided in the README file. For assistance once NetSet is
running, refer to the NetSet on-line help.
Note:
See Appendix D for more information.
3.1.2 Using a Web Browser
The ThinWeb Manager web browser interface allows you to log into and configure your
LES using a standard web browser with JavaScript enabled. Simply type the LES IP
address or resolvable text name into the browser’s URL/Location field.
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LES Terminal Servers
Figure 3.1 Sample Web Browser Login
Once you have connected to the LES, you will see the Black Box ThinWeb Manager
interface. Use the left-hand menu to navigate to subpages where you can configure
important settings as well as view statistics and other server information.
Figure 3.2 ThinWeb Manager Interface
MENU
3.1.3 Incoming Logins
You can log in via NetSet to configure the LES. you can also use incoming LAT and TCP/
IP logins.
Incoming Telnet is only possible if your LES has an IP address configured. Incoming
Telnet is enabled by default to allow TCP/IP connections. To change this setting, use the
Define Server Incoming command described in the Command Reference chapter of the
Terminal Server Reference Manual located on the CD-ROM.
Incoming logins do not prompt for a login password, so you may wish to disable them for
security reasons. If it is undesirable to disable incoming logins, the LES can be configured
to prompt for a password with the Define Server Incoming Password Enabled command.
3.1.4 Console Terminal
To configure the LES via a console terminal, attach a terminal to the serial console port
(port 1) and press the Return key. You will see a Local> prompt at which you can enter
configuration commands.
3.2 Services
With few exceptions, you must create a service before you can configure print queues on
the LES. A service is a resource accessible to network hosts. A Black Box service is also
known as a remote printer name or remote queue name on many operating systems.
8
Chapter 4.0: Using the LES
4.0 Using the LES
The sections in this chapter show how to use the LES in a variety of applications.
◆
For detailed instructions on how to set up the LES as a console server, see Console
Server Example on page 4.0-9.
◆
For instructions on how to use the LES in serial tunnel mode, see Serial Tunnel
Example on page 4.0-15.
◆
For information about using the LES with the Black Box Comm Port Redirector,
see Comm Port Redirector on page 4.0-16.
Keep in mind that you must reboot the LES after issuing a Define command. The command will take effect when the LES reboots. The one exception is that Define Port commands take effect when a port is logged out.
4.1 Console Server Example
When you use the LES as a console server, you can remotely manage devices and equipment from anywhere on the network.
Figure 4.1 Console Server
INTERNET
OR
INTRANET
TERMINAL
SERVER
MODEM
UNIX
SERVER
DUMB
TERMINAL
PBX
ROUTER
NETWORKED
PC
SWITCH
To use the LES as a console server, you must connect the LES serial ports to the serial
console/management ports of other equipment such as UNIX servers, PBX switches,
routers, network switches, or other similar devices.
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LES Terminal Servers
Once you have completed the connections, you can establish a Telnet connection to the
LES IP address and socket number of the desired port. The LES serial ports allow two types
of socket connections: Telnet IAC interpretation at socket 200x, and raw TCP connections
at socket 300x, where x is the port number. For example, to open a Telnet connection to
port 4 of an LES at IP address 192.0.1.168, you would issue the command “Telnet
192.0.1.168:2004” from your system prompt.
In addition to direct Telnet connections, you can use the LES’ built-in menu feature. The
LES menu allows you to connect to the IP address of the LES and be greeted with a menu
with which to connect to each attached serial device. Menu choices are an easy way to let
users access often-used hosts and services without needing to know any LES command
syntax, the IP addresses of the non-local devices, or the socket numbers involved.
Figure 4.2 Sample Menu
Black Box Console Server
1)
2)
3)
4)
Cisco Router
Sun Server
HPUX Server
Linux Server
5) PBX Switch
6) LES Prompt
7) Logout
8)
Enter Selection:
4.1.1 Define the Menus
You create menus with the Set/Define Menu command. Each menu entry is numbered.
Each command includes a name for the menu item and a command that is executed on the
LES when that menu item is chosen. Users type the number of the command they wish to
execute and press Return.
To give your menu a name, use a Define Menu Title command.
Figure 4.3 Menu Title
Local>> DEFINE MENU TITLE "Black Box Console Server:"
There are three types of menu entries: those that connect users to devices on the network,
those that connect users to devices attached to the LES, and those that function locally on
the LES. The basic syntax of the Define Menu command includes a menu item number, a
menu item name, and a command that is executed when the user chooses that menu item.
Figure 4.4 Generic Menu Command
Local>> DEFINE MENU n "Name" "command"
Note:
10
You must enclose both the menu item and the command in their own
sets of quotation marks.
Chapter 4.0: Using the LES
To allow users to connect to a device on the network from a terminal connected to the LES,
use a Telnet command.
Figure 4.5 Menu Entries for Network Connections
Local>> DEFINE MENU 1 "Cisco Router" "telnet 192.0.1.250;kill"
Local>> DEFINE MENU 2 "Sun Server" "telnet 192.0.1.251;kill"
To allow users to connect from the network to a device connected to the LES (or from one
LES port to another) add a Connect Local command.
Figure 4.6 Menu Entries for Local Connections
Local>> DEFINE MENU 3 "HPUX Server" "connect local port_3"
Local>> DEFINE MENU 4 "Linux Server" "connect local port_4"
Local>> DEFINE MENU 5 "PBX Switch" "connect local port_5"
To allow users to access a local service on the LES, add a general LES command.
Figure 4.7 Menu Entries for manipulating the LES
Local>> DEFINE MENU 6 "LES Prompt" "exit"
Local>> DEFINE MENU 7 "Logout" "logout"
Note:
The Exit command only works in menu mode. It allows users to return
to the Local> prompt on the LES on which the menu was configured.
It is helpful to include this command in your menus until you have fully
tested them - otherwise there is no way for users on menu mode ports
to return to the Local> prompt.
To review the menu you’ve just created, type Show Menu at the Local> prompt. The menu
created by the previous commands would look like this:
Figure 4.8 New Menu
Local_1>> show menu
Title for the menu is "Black Box Console Server"
1: Cisco Router --> "telnet 192.0.1.250;kill"
2: Sun Server --> "telnet 192.0.1.251;kill"
3: HPUX Server --> "connect local port_3"
4: Linux Server --> "connect local port_4"
5: PBX Switch --> "connect local port_5"
6: LES Prompt --> "exit"
7: Logout --> "logout"
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LES Terminal Servers
4.1.2 Enable Menu Mode
You must enable menu mode for all ports on which you wish the menu system to work.
Ports 2-4 will be used for the examples in this section.
Figure 4.9 Enabling Menu Mode
Local>> DEFINE PORT 2-4 MENU ENABLED
Local>> LOGOUT PORT 2-4
If you want incoming logins from the network to be able to use the menu, you must enable
menu mode on port 0. Users who Telnet into the LES would see the menu rather than the
Local> prompt.
Note:
Administrators can bypass the menu and get to the LES command line
by forming a Telnet connection to port 7000.
4.1.3 Configure Switches
Switches allow users to move around within open sessions and return to the LES Local>
prompt if needed. It is important to set switches if you intend to allow serial port users to
hold multiple sessions to remote servers. You must set switches for all of the ports for
which menu mode was enabled in Section 4.1.2.
Any key may be used for a switch, provided that the chosen keys do not interfere with the
sessions. To use a control key, type a carat (^).
Figure 4.10 Configuring Switches
Local>>
Local>>
Local>>
Local>>
Note:
12
DEFINE
DEFINE
DEFINE
DEFINE
PORT
PORT
PORT
PORT
2-4
2-4
2-4
2-4
LOCAL SWITCH ^X
FORWARD SWITCH ^F
BACKWARD SWITCH ^B
BREAK LOCAL
Define Port Break Local allows the LES to recognize the switches you
just configured.
Chapter 4.0: Using the LES
To check switch configurations, enter the Show/List Port command and specify the ports
that are used for menu mode.
Figure 4.11 Show Port Screen
Local_1>> show po 2
Port 2 : Username:
Physical Port 2 (Idle)
Char Size/Stop Bits:
8/1
Flow Ctrl:
Xon/Xoff
Parity:
None
Input Speed:
Output Speed:
Modem Control:
9600
9600
None
Access:
Backward:
Break Ctrl:
Forward:
Local Switch:
Port Name:
Session Limit:
Terminal Type:
^X
Port_2
4
Soft()
Dynamic
^B
Local
^F
Characteristics: Menu
4.1.4 Using Menus
When you log into a port with menu mode enabled, you will be presented with an initial
login screen.
Figure 4.12 Login Screen
Black Box LESxx Version B3.6/3 (000410)
Type HELP at the ’Local_10> ’ prompt for assistance.
Username>
1
Enter your user name (in this case, Bob) and press Return.
Figure 4.13 Login Screen, part 2
Username> Bob
Press <CR> to continue...
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LES Terminal Servers
2
As instructed, press the Return key once more to see the actual menu.
Figure 4.14 Login Menu
Black Box Console Server
1)
2)
3)
4)
Cisco Router
Sun Server
HPUX Server
Linux Server
5) PBX Switch
6) LES Prompt
7) Logout
8)
Enter Selection:
3
Choose a menu option. Type the number of the desired option and press Return. For
example, to connect to the Linux server, you would press 2 and then press Return.
4
To return to the menu from your Linux session, press the configured Local Switch
key. In this case, the Local Switch is Ctrl-X (see Figure 4.10).
Note:
14
Switch keys only work within sessions. They do not work from the menu
screen - you must enter a menu number to go to a session from the
menu screen.
Chapter 4.0: Using the LES
4.2 Serial Tunnel Example
Two LES’s can be connected to emulate a direct serial connection across a LAN or WAN.
Servers connected in this way can pass data only—they will not be able to pass status signals (DSR/DTR, CTS/RTS, etc.) or preserve timing between characters. The basic network
configuration for this virtual serial line is shown in Figure 4.15.
Figure 4.15 Back-to-Back LES Connections
Serial Device
LES_A
Ethernet
LAN/
WAN
Serial Device
Ethernet
LES_B
4.2.1 TCP Configuration
Assuming the LES serial port parameters have been configured properly, the LES’s would
be configured as follows.
LES_A
Local>> DEFINE PORT 2 DEDICATED TELNET
192.168.5.10:3001T
Local>> DEFINE PORT 2 AUTOSTART ENABLED
LES_B
Local>> DEFINE PORT 3 ACCESS REMOTE
Local>> DEFINE PORT 3 DEDICATED NONE
Local>> DEFINE PORT 3 AUTOSTART DISABLED
Note:
If the LESs are on different IP subnets, configure the default gateway
on each unit with the Change Gateway command.
The above commands create a raw (8-bit clean) TCP connection between LES_A port 2
and LES_B port 3 once the units have been power-cycled. The commands for LES_A ensure that it will automatically connect to LES_B each time it is booted. The commands for
LES_B ensure that it is always available to accept connections from LES_A.
Note:
You must log out the LES ports after configuring them so that the commands can take effect.
15
LES Terminal Servers
4.2.2 UDP Configuration
When the UDP protocol is used, there is no connection; each LES must be told explicitly
which hosts it is allowed to accept packets from. Each LES would have to be configured to
both send packets to and accept packets from the other LES.
LES_A
Local>> DEFINE PORT 2 DEDICATED TELNET
192.168.5.10:4096U
Local>> DEFINE PORT 2 AUTOSTART ENABLED
Local>> DEFINE PORT 2 ACCESS DYNAMIC
LES_B
Local>> DEFINE PORT 3 DEDICATED TELNET
192.168.5.2:4096U
Local>> DEFINE PORT 3 AUTOSTART ENABLED
Local>> DEFINE PORT 3 ACCESS DYNAMIC
Setting up Dedicated hosts ensures that the units will always talk to each other. Enabling
Autostart for both units enables one LES to send data to the other LES without having to
wait for a serial carriage return to start the session. LES_B knows exactly which other LES
to accept connections from. Finally, when Autostart is enabled, the access mode must be
either Local or Dynamic (Dynamic is more flexible).
4.2.3 Multi-port Serial Tunnel Configuration
You can create serial tunnels for any available ports on the LES. Each serial tunnel must
point from one LES port to one different serial device port.
4.3 Comm Port Redirector
The Black Box Comm Port Redirector application allows PCs to share modems and other
serial devices connected to an LES using Microsoft Windows or DOS communication applications. The Redirector intercepts communications to specified Comm ports and sends
them over an IP network connection to the LES serial port. This enables the PC to use the
LES serial port as if it were one of the PC Comm ports. Using their existing communications software, PC users dial out to a remote host through a modem connected to the LES.
The Comm Port Redirector software and installation instructions are included on the distribution CD-ROM.
16
Chapter 5.0: TCP/IP Configuration
5.0 TCP/IP Configuration
The NetSet configuration software is the easiest way to configure the LES. The following
sections cover IP address configuration and print configuration methods for TCP/IP
hosts.
5.1 Setting the IP Address
The LES IP address must be configured before any TCP/IP functionality is available. Use
one of the following methods to set the IP address: NetSet; a directed Ping packet; a
BOOTP, DHCP, or RARP reply; or commands entered via the command line interface.
5.1.1 Using NetSet
Use the following steps to assign an IP address using NetSet.
1
From the Action menu, select Assign IP Address.
2
Enter or change the IP-related settings:
A
For Ethernet Address, enter the number that appears on the bottom label of
your LES.
B
For IP Address, enter the desired IP address to use for this LES.
C
For Subnet Mask, change the values provided only if you wish to use a mask
other than the default. The default value should be correct in most cases.
D
For Loadhost, enter the IP address of the loadhost where you intend to store
your operating code and SDK files (if used).
3
Click OK.
4
Reboot the LES. NetSet will let you know whether the configuration was successful.
Note:
If you have an older version of NetSet, refer to the Readme that was
included with it.
5.1.2 Using a Directed Ping Packet
The ARP/ping method is available under UNIX and Windows-based systems. If the LES
has no IP address, it will set its address from the first directed IP packet it receives.
17
LES Terminal Servers
On a UNIX host, create an entry in the host’s ARP table and substitute the intended IP address and the hardware address of the LES, then ping the LES. This process typically requires superuser privileges.
Figure 5.1 ARP and Ping on UNIX
# arp -s 192.0.1.228 00:80:a3:xx:xx:xx
% ping 192.0.1.228
In order for the ARP command to work on Windows, the ARP table on the PC must have
at least one IP address defined other than its own. If the ARP table is empty, the command
will return an error message. Type ARP -A at the DOS command prompt to verify that
there is at least one entry in the ARP table.
Figure 5.2 ARP and Ping on Windows
C:\ ARP -S 192.0.1.228 00-80-A3-XX-XX-XX
C:\ PING 192.0.1.228
Note:
There should be replies from the IP address if the ARP command
worked.
When the LES receives the ping packet, it will notice that its IP address is not set and will
send out broadcasts to see if another node is using the specified address. If no duplicate is
found, the LES will use the IP address and will respond to the ping packet.
The LES will not save the learned IP address permanently; this procedure is intended as a
temporary measure to enable NetSet to communicate with the LES, or allow an administrator to Telnet into the LES. Once logged in, the administrator can enter the Change IPaddress command to make the address permanent.
Figure 5.3 Configuring Permanent IP Address
% telnet 192.0.1.228
Trying 192.0.1.228
Black Box LESx Version n.n/n (yymmdd)
Type Help at the ‘Local_>’ prompt for assistance.
Enter Username> gopher
Local> SET PRIVILEGED
Password> system (not echoed)
Local>> DEFINE IPADDRESS 192.0.1.228
Any host wishing to access the LES will have to be told the LES’s IP address. This is typically configured in the unix file /etc/hosts or via a nameserver. Refer to the host’s documentation for additional information.
18
Chapter 5.0: TCP/IP Configuration
5.1.3 Using a BOOTP, DHCP, or RARP Reply
At boot time a host-based DHCP, BOOTP, or RARP server can respond to an LES request
for an available IP address. For information about configuring the DHCP, BOOTP, or
RARP server, see your host documentation.
5.1.4 Using the Command Line Interface
1
Connect to the serial port (Port_1) using a console terminal or a terminal emulation
program, and press Return. The serial port settings are 9600 baud, 8 bits, 1 stop bit,
no parity.
2
Become the privileged user.
Figure 5.4 Becoming the Privileged User
Local> SET PRIVILEGED
Password> system (not echoed)
Local>>
3
Enter the new IP address.
Figure 5.5 Configuring the IP Address
Local>> define server ipaddress 192.0.1.201
5.2 LPR Printing
The LES provides two major methods of printing via TCP/IP: Berkeley remote LPR and
RTEL host software.
Two parameters must be configured for LPR printing:
1
The IP address or host name of the LES.
2
The remote output queue (the name of the service on the LES).
19
LES Terminal Servers
In addition, there are a few important things to note about LPR printing:
◆
Windows for Workgroups, Windows 95, and Windows 98 do not support LPR directly; however, Black Box has provided a peer-to-peer printing solution on the distribution CD-ROM.
◆
Because of the way the LPR protocol is typically implemented on the host, the processing options and banner page are sent after the job data itself. The LES will print
a banner page at the end of a job, and cannot support most of the LPR options. If it
is necessary to have the banner page at the beginning of the printout, install and use
the RTEL software. If banners are not needed, they can be disabled.
◆
The LES cannot print multiple copies of the print job when using the “-#n” lpr option.
◆
If two print queues on the host refer to two services on the same LES, they must use
separate spooling directories.
◆
No special purpose input or output filters can be used when printing via LPR. If this
functionality is necessary, use the named pipe interface program in the RTEL print
queue configuration software.
5.2.1 LPR on Windows NT 3.5.1 (and later)
This section assumes that TCP/IP, Simple TCP/IP, and Microsoft TCP/IP printing have
been installed on the Windows NT host.
1
In the Control Panel, double-click the Printers icon.
2
Double-click the Add Printer icon.
3
In the window that appears, choose My computer and click Next.
20
Chapter 5.0: TCP/IP Configuration
4
Select the Add Port button and click Next.
5
Select LPR Port.
Note:
6
If LPR Port is not an option, open the Network Control Panel and add
“Microsoft TCP/IP Printing” to the List of services.
Enter the name or IP address of your LES on the first line, and enter the name of your
LES print service on the second line.
21
LES Terminal Servers
7
Select the manufacturer and printer type.
8
Enter the queue name.
9
If applicable, choose Shared and select the type of operating system that the printer
will be working with. (First confirm that the print queue is working.)
22
Chapter 5.0: TCP/IP Configuration
10 Test the printer by choosing Yes and clicking Finish.
5.2.2 LPR on Windows 95/98
To enable LPR printing on Windows 95/98, you must download and install the LPR for
Windows 95/98 application from the Black Box FTP site.
1
On the FTP home page, click on pub.
2
Click on lpr_win32.
3
Download the file ltxlpr.exe.
4
Install the file ltxlpr.exe. Once installation is complete, a readme file will open automatically.
5
Follow the directions in the readme file to configure LPR on your PC.
5.2.3 LPR on UNIX Hosts
The Berkeley remote printing system is supported on many machines, and is simple to configure. This section describes how to configure LPR print queues on generic UNIX hosts
such as SUN hosts. There are slight variations in LPR configuration for AIX, HP, and SCO
hosts, as will be explained in the following sections.
1
Install a print queue on your host by adding the LES name and IP address to the
/etc/hosts file:
Figure 5.6 Adding /etc/hosts Entry
xxx.xxx.xxx.xxx
LES_xxxxxx
23
LES Terminal Servers
2
Add the host print queue to the /etc/printcap file. The punctuation shown in Figure
5.7 is required, and no extra spaces should be added.
Figure 5.7 Adding /etc/printcap Entry
les_prt|Printer on LAB LES:\
:rm=LES_xxxxxx:\
:rp=LES_xxxxxx_TEXT:\
:sd=/usr/spool/lpd/les_prt:
This will create a host queue named les_prt. The rm parameter is the name of the
LES in the host’s address file, the rp parameter is the name of the service as it exists
on the LES, and the sd parameter specifies the name of a directory used to hold temporary spooling files.
3
Create a world-writable spooling directory using the mkdir command.
Figure 5.8 Creating Spooling Directory
# mkdir /usr/spool/lpd/les_prt
# chmod 777 /usr/spool/lpd/les_prt
4
If desired, use the mx option to allow unlimited size files to be printed and the sh
option to prevent header pages from being generated. See the host’s documentation
or man pages for more information on the format of the printcap file and how to create the spool directory.
5
Print to the queue using normal lpr commands:
Figure 5.9 Printing to Queue
% lpr -Ples_prt /etc/hosts
5.2.4 LPR on AIX Hosts
The System Management Interface Tool (SMIT) allows you to enable LPD printing and
create print queues. LPR has only been tested on AIX versions 3.2 and higher.
To create a print queue:
1
At the host prompt, type smit.
2
Choose Print Spooling.
3
Choose Manage Print Server and Start the Print Server Subsystem (lpd daemon).
4
In the Start the Print Server Subsystem dialog box, type both in the first field.
5
The message “The lpd subsystem has been started” will appear. Click Done.
24
Chapter 5.0: TCP/IP Configuration
To add a print queue:
1
From the main window, choose Print Spooling.
2
Choose Manage Print Server and Manage Print Queues.
3
Choose Add a print queue.
4
From the dialog box that appears, choose remote.
5
From the next dialog box, choose Remote Printing.
6
The Add a Standard Remote Print Queue dialog box will appear. Enter the following information.
7
❍
The name of the print queue,
❍
The name of the LES unit,
❍
The name of the LES service,
❍
The type of print spooler on the remote server, and
❍
A description of the printer on the remote server.
A dialog box will appear: “Added print queue les_prt”. Click Done.
Note:
8
If you are unable to use SMIT, see the Terminal Server Reference Manual on the CD-ROM for UNIX commands used to set up print queues.
Print to the queue using normal lp syntax.
Figure 5.10 Printing to Queue
% lp -dles_prt filename
5.2.5 LPR on HP Hosts
The System Administration Manager (SAM) allows you to create print queues.
Note:
If you are unable to use SAM, the Terminal Server Reference Manual
located on the CD-ROM describes UNIX commands that can be used
to set up print queues.
To create a print queue:
1
At the HP prompt, type sam.
2
From the main application window, choose Printers and Plotters.
3
In the Printers and Plotters window, choose Printers/Plotters.
25
LES Terminal Servers
4
In the pull-down menu, select Remote Printer/Plotter from the Actions menu.
5
The Add Remote Printer window will appear. SAM will prompt you for:
❍
The printer name (the name of the print queue),
❍
The remote system name (the LES name),
❍
The remote printer name (the LES service),
❍
The remote cancel model, and
❍
The remote status model.
5.2.6 LPR on SCO UNIX Hosts
LPR is supported in SCO V3.2 release 4 with TCP/IP Version 1.2 and greater.
To configure a print queue using LPR, issue the mkdev rlp command. This will install the
Berkeley remote printing files and executable programs.
Note:
The mkdev rlp command should only be issued once, or serious problems will occur. If this happens, contact SCO technical support.
You can print to this queue using normal lp syntax once the remote printer is set up. To
create a remote printer:
1
26
Issue the rlpconf command.
Chapter 5.0: TCP/IP Configuration
2
Answer the questions that follow.
Figure 5.11 Configuring Remote Printer
Remote Printing Configuration
Enter information for remote printers or local printers accepting
remote printing requests
Please enter the printer name (q to quit): backupprinter
Is printer backupprinter a remote printer or a local printer? (r/l) r
Please enter the name of the remote host that backupprinter is
attached to: LES_xxxxxx
The backupprinter is connected to host LES_xxxxxx.
Is this correct? (y/n) y
Would you like this to be the sys.default printer? (y/n) y
Make sure your hostname appears in LES_PRT’s /etc/hosts.equivor or /
etc/hosts:lpd file.
Make sure backupprinter appears in /etc/printcap (in BSD format).
Make sure backupprinter has a spool directory on LES_PRT.
Putting the printer in printer description file and creating spool
directory... done
Updating LP information... done
In the example, the printer name is your LES service name, and the remote host
name is the name of your LES as it is listed in your hosts file.
During initial configuration, the queue name must be the same as the remote printer name.
However, you may change the queue name later by manually editing the printcap file.
5.2.7 RTEL Functionality
If the LPR method of printing is not adequate for an application (for example, if you need
banners before jobs, or more flexibility), configure the Black Box-supplied RTEL software
on the host. After installing the software configuring the connections to the LES, you can
use normal UNIX print commands and queue utilities such as lpc and lpstat.
Note:
RTEL binaries are provided for many systems. Source code is also
provided for use on non-supported systems.
To print to the LES using special formatting or using third-party software packages, you
may have to create print pipes on the host. The RTEL software provides this functionality
by providing a UNIX named-pipe interface.
27
LES Terminal Servers
To recreate the RTEL source files:
1
Copy the file RTEL_SRC.TAR in binary mode from the distribution CD-ROM to
the UNIX host.
2
Untar the archive.
3
See the README files in the created directories that describe the contents of the
RTEL distribution and man pages that describe the actual software functionality.
5.3 Unix Host Troubleshooting
Table 5-1: TCP Troubleshooting
Area to Check
Explanation
The LES IP address and name are
entered in the host file
Telnet to the LES using the name in the host file and
verify that the LES name is resolvable and that the
LES is reachable via the network.
Jobs that appear in the host queue
reach the LES
From within the LPC administrative utility, enter these
commands to clear and reset the host queue:
abort queue
clear queue
enable queue
start queue
28
28
Chapter 6.0: NetWare Configuration
6.0 NetWare Configuration
The NetSet configuration software is the easiest way to configure the LES. The following
sections cover print configuration methods for NetWare hosts.
Note:
The LES needs an IP address before you can use NetSet. See Setting
the IP Address on page 5.0-17 for instructions.
This chapter explains creating NDS print queues with NetWare Administrator and with
the PCONSOLE Quick Setup option. To create NDS print queues, you must be running
NetWare version 4.x with NDS capabilities.
If you are running NetWare versions 2.x, 3.x, or version 4.x with bindery emulation, you
may configure bindery print queues using QINST (bindery only) or PCONSOLE. For
more information, see the NetWare chapter of the Terminal Server Reference Manual located on the CD-ROM.
6.1
NDPS Printing
For instruction on setting up NDPS, refer to your Novell documentation.
6.2
1
Configure your LES
License NDS on your LES using the string obtained from Black Box.
Figure 6.1 Licensing NDS
Local>> DEFINE PROTOCOL NETWARE DSLICENSE licensestring
2
Define the directory service tree in which the LES is located.
Figure 6.2 Defining Directory Service Tree
Local>> DEFINE PROTOCOL NETWARE DSTREE foodco
Note:
3
For an explanation of the structure of the NetWare Directory Service tree, see your host documentation.
Define the directory service context in which the LES is located.
Figure 6.3 Defining Directory Service Context
Local>> DEFINE PROTOCOL NETWARE DSCONTEXT
ou=kiwi.ou=exotic.o=fruit
29
LES Terminal Servers
4
Enter the List Protocol NetWare Access command to ensure that at least one of the
file servers in the directory service tree is in the access list.
5
If desired file server is not in the access list, add it.
Figure 6.4 Defining Access List
Local>> DEFINE PROTOCOL NETWARE ACCESS fileserver
6
Reboot the LES.
Figure 6.5 Rebooting
Local>> INITIALIZE DELAY 0
6.3 NetWare Administrator Quick Setup
Print Queues
The NetWare Administrator management utility allows you to manage network resources,
such as queue-based print services, in a tree structure. You can either use the Quick Setup
option or individually create printing-related objects.
Note:
NetWare Administrator can be used for both NDS and bindery print
queues.
To create a print queue with the Quick Setup option:
1
Start the NetWare Administrator.
2
In the Directory Tree windows, select the context in which to install the printer.
3
From the Menu Bar, select Tools: Print Services Quick Setup.
4
In the Print Server Name field, enter the name of your LES (viewable by entering
the Show Server command at the Local> prompt).
5
In the Printer Name field, enter the name of the desired print service configured on
your LES. For example, LES_xxxxxx_.
6
In the Print Queue Name field, enter the name of the print queue to create. The
name should be meaningful to you; it will not affect LES configuration.
7
Click Create.
8
Reboot the LES.
30
Chapter 6.0: NetWare Configuration
6.4
PCONSOLE Print Queues
1
Log in as Admin on the file server you will be changing.
2
At the prompt, type PCONSOLE to start the utility.
For example, if your file server is mapped to the F: drive, you would use the F:
prompt.
3
From the main menu, choose Quick Set-Up.
4
When prompted by PCONSOLE, enter the information with which to configure the
print queue.
❍
The print server name (LES_xxxxxx),
❍
The new printer name (service name, such as LES_xxxxxx_),
❍
The new print queue name, and
❍
The print queue volume (the name of the file server from which the printer receives print requests).
The remaining fields can be left in their default settings.
5
Press the F10 key to save the print queue information.
6
Reboot the LES.
6.5
NetWare Host Troubleshooting
Table 6-1: NetWare Host Troubleshooting (Bindery Mode)
Area to Check
Explanation
The print server names in PCONSOLE match the LES name and its
service name
Use PCONSOLE to check.
The LES NetWare access table
Use the Show Protocols NetWare Access command.
Scanning too many file servers can cause a delay
between jobs. Configure the access list to only scan for
jobs on the file servers of interest.
31
LES Terminal Servers
Table 6-2: NetWare Host Troubleshooting (NDS)
Area to Check
Explanation
The LES NetWare access table
Use the Show Protocols NetWare Access command. By
default, only local file servers are scanned for queues.
The LES login password and the
queue password on the file server
The passwords must match or the LES will not be able to
log into the file servers to scan for jobs.
The LES has successfully attached to Type NETSTAT at the Local> prompt. This will display
the queue
information about fileservers, printers, and queues that
the LES has found. If a queue is in JobPoll, the LES has
successfully attached to the queue.
The DSTree, DSContext, and
DSLicense
Type Show Protocol NetWare NDS. This command
shows the tree and the context that you have configured, a
failure code, and an NDS error code for each server.
DSTree is the directory service tree on which the LES is
located. DSContext is the context where the LES is
located; it must match the context on the file server (The
DSContext must be of the following form:
ou=fruit.o=exotic). DSLicensed should be yes.
Printer and queue changes have prop- It may take a few minutes for the changes to propagate. If
agated through the NDS tree
the LES doesn’t attach, reboot the LES.
32
Chapter 6.0: NetWare Configuration
Table 6-3: NDS Errors from the File Server
Code
Meaning
Remedy
0xfffffda7
Object could not be
found in the given
context
Check the LES server name, DScontext, and DStree to ensure
the printer server is set up correctly with PCONSOLE.
0xfffffda5
Requested attribute
could not be found
Use PCONSOLE to ensure that the LES has associated printers and the printers have associated queues.
0xfffffd69
DS Database is locked An administrator is probably updating the database. Wait a
few minutes and issue the Set Protocol NetWare Reset command.
0xfffffd63
Invalid password
The password for the print server object under PCONSOLE
must match the LES login password. If the login password on
the LES is left as the default (access), there should be no
password for the print server object.
0xfffffd54
Secure NCP violation
Turn down the NCP packet signature level so that it is not
required.
Table 6-4: NDS Printing Errors
Bit
Meaning
Remedy
1
Server out of memory
Turn the LES off, wait a few seconds, and turn it back on. Disable
unused protocols and/or remove fileservers without print queues
from the NetWare access list.
2, 3
Unexpected response
from file server
Report the problem to Black Box Technical Support.
4
No printers found for
the LES
Ensure that there are printers for the LES, and the printer names
match the service names on the LES.
5
No printer queue found
Ensure that the printers have associated queues.
6
Login failed
Ensure there is a print server object configured with the same
name as the LES.
7
Authentication failed
Ensure the LES login password is the same as the print server
object password. If the LES is using the default password (access),
there should be no print server object password.
8
Server cannot attach to
queue
Check the NDS partitions, replicas, and volumes to ensure the file
server where the queue lives has the correct information.
33
Chapter 7.0: LAT Configuration
7.0 LAT Configuration
The NetSet configuration software is the easiest way to configure the LES. The following
sections cover print configuration methods for LAT hosts.
Note:
The LES needs an IP address before you can use NetSet. See Setting
the IP Address on page 5.0-17 for instructions.
To use LAT you must obtain a LAT license from your dealer or Black Box and use the
Set/Define Protocol LAT License command on your LES. LAT print queues can be created by printing to a port or printing to a service. Printing directly to a port requires no
LES configuration.
Note:
Printing directly to a port is the easiest method for printing to the
LES. If you would like instructions for printing to a service, see the
Terminal Server Reference Manual located on the CD-ROM.
7.1 Printing Directly to a Port
1
Create a LAT application port that references the LES port.
Figure 7.1 Creating LAT Application Port
$ RUN SYS$SYSTEM:LATCP
LATCP> CREATE PORT LTAnnn/APPLICATION
LATCP> SET PORT LTAnnn/NODE=LES_xxxxxx/PORT=Port_n
LATCP> EXIT
2
Create and start a print queue that uses the LAT application port.
Figure 7.2 Creating and Starting Print Queue
$ INITIALIZE/QUEUE/START/ON=LTAnnn:/PROCESSOR=LATSYM
/RETAIN=ERROR queue_name
3
Add the commands to the SYS$MANAGER:LAT$STARTUP.COM file so the
required LAT devices will be recreated after each host reboot.
Note:
LAT terminal device characteristics may have to be changed to correctly print certain files. See your VMS documentation for more information.
35
LES Terminal Servers
4
Print to the queue.
Figure 7.3 Printing to Queue
$ PRINT/QUEUE=queue_name filename.txt
7.2 LAT Host Troubleshooting
By default, the LAT error message codes on the host are not translated into text error messages. If a LAT job fails and appears in the queue with an eight-digit hex result code, the
code can be translated by issuing the following commands:
Figure 7.4 Translating LAT Error Codes
$ SHOW QUEUE/FULL/ALL queue_name
(note the error code nnnnnnnn)
$ SET MESSAGE SYS$MESSAGE:NETWRKMSG.EXE
$ EXIT %Xnnnnnnnn
Table 7-1: Troubleshooting LAT Configurations Using a Port
36
Area to check
Explanation
The specified node name matches the
LES node name
Use the Show Server command to verify.
The specified port name matches the
port’s name
Use the List Port 1 command to verify.
Chapter 8.0: AppleTalk Configuration
8.0 AppleTalk Configuration
The NetSet configuration software is the easiest way to configure the LES. The following
sections cover print configuration methods for AppleTalk hosts.
Note:
The LES needs an IP address before you can use NetSet. See Setting
the IP Address on page 5.0-17 for instructions.
Note:
Macintoshes that do not support EtherTalk will need either an
Ethernet card or a LocalTalk-to-EtherTalk router to use the LES.
8.1 Bitronics
Printing from a Macintosh is only possible with a PostScript printer and bi-directional
communication between the LES and that printer. The LES supports the Bitronics interface, an extension to the standard Centronics interface. Printers that support Bitronics allow bi-directional communication. To enable Bitronics on an LES port, use the Define
Port n Bitronics Enabled command.
Note:
MacOS 8.1 can also print via LPD. See the Terminal Server
Reference Manual located on the CD-ROM and web site for
configuration instructions.
8.2 Macintosh Services
Before attempting to print from a Macintosh, ensure that AppleTalk and PostScript are
both enabled on at least one service. Once a PostScript AppleTalk service is configured,
the service will appear in the Chooser as a LaserWriter in the same zone as the LES. Select the service in the Chooser and complete the appropriate setup options. Then close
the Chooser window and print a test page of text to the Macintosh service.
8.3 AppleTalk Zones
If there is a router on the network, the LES will appear in the default zone specified by
the router. To change the default zone use the Define Protocol AppleTalk Zone command.
If the LES is attached to a network without an AppleTalk router, all AppleTalk devices
(including the LES) will appear in the default zone in the Chooser.
Note:
If no router is present on the network, the LES will not accept
AppleTalk print jobs for 60 seconds after booting.
37
LES Terminal Servers
8.4 AppleTalk Host Troubleshooting
Table 8.1 AppleTalk Host Troubleshooting
38
Area to Check
Explanation
The printer is available to be selected
in the Chooser
Make sure the printer is in the right zone.
Bidirectional communication
Lock the printer in PostScript mode and issue the
Test Service PostScript Count n command. This
sends a job to the printer and waits for the response.
Chapter 9.0: DLC Configuration for LAN Manager
9.0 DLC Configuration for LAN
Manager
The NetSet configuration software is the easiest way to configure the LES. This chapter
explains DLC/Digital Network Port configuration for Windows NT 4.x hosts.
Note:
The Server needs an IP address before you can use NetSet. See Setting the IP Address on page 5.0-17 for instructions.
Printing using an LPD client is the preferred method for sending print jobs to the LES.
Windows 95 does not support DLC printing (see Chapter 5.0 for more information).
9.1 DLC Configuration
9.1.1
LES Configuration
To use the DLC protocol, you must have one service with the DLC characteristic enabled. The DLC characteristic may be associated with only one service on a given LES.
Figure 9.1 Enabling DLC
Local>> DEFINE SERVICE LES_xxxxxx_ DLC ENABLED
9.1.2
Host Configuration
To send print jobs from a Windows NT host to the LES, add the LES as a Windows NT
printer.
1
Double-click the Printers icon in the Control Panel.
2
Double-click the Add Printer icon.
3
In the window that appears, select My Computer and click Next.
4
Select the Add Port button.
5
Select Hewlett-Packard Network Port and click New Port.
If Hewlett-Packard port is not one of the available options, you must install DLC
printing from your Windows NT system disks. DLC is not installed by default.
6
Enter the LES hardware address. It is printed on the LES bottom label.
39
LES Terminal Servers
7
Select Job-based.
8
Select the manufacturer and printer type.
9
Enter the queue name.
10 If applicable, choose Shared and select the operating system the printer will be
working with. (First confirm that the print queue is working.)
11 Test the printer.
40
Appendix A: Contact Information
A: Contact Information
If you are experiencing an error that is not listed in Appendix B: or if you are unable to fix
the error, contact Black Box Technical Support at (724)746-5500.
A.1 Problem Report Procedure
When you report a problem, please provide the following information:
◆
Your name, and your company name, address, and phone number
◆
Black Box LES model number
◆
Black Box LES serial number
◆
Software version (use the Show Server command to display)
◆
Network configuration, including the information from a Netstat command
◆
Description of the problem
◆
Debug report (stack dump), if applicable
◆
Status of the unit when the problem occurred (please try to include information on
user and network activity at the time of the problem)
A-1
Appendix B: Troubleshooting
B: Troubleshooting
This Appendix discusses how to diagnose and fix errors quickly yourself without having to
contact Black Box. It will help to connect a terminal to the serial port while diagnosing an
error to view any summary messages that are displayed.
When troubleshooting, always ensure that the physical connections (power cable, network
cable, and serial cable) are secure. If you have trouble with wireless networking, it may help
to connect the LES to a wired Ethernet network to verify that it is working properly and to
check the wireless settings.
Note:
Some unexplained errors may be caused by duplicate IP addresses on
the network. Make sure that your LES IP address is unique.
B.1 Power-up Troubleshooting
Problem situations and error messages are listed in Table B-1. If you cannot find an
explanation for your problem, try to match it to one of the other errors. If you cannot
remedy the problem, contact your dealer or Black Box Technical Support.
Table B-1: Power-up Problems and Error Messages
Problem/Message Error
Remedy
The LES is
The unit or its power supply is
connected to a power damaged.
source, but there is
no LED activity.
Contact Black Box Technical Support for
a replacement.
The LES is unable to This generally indicates a
complete power-up
hardware fault. One of the
diagnostics.
LEDs will be solid red for three
seconds, followed by one
second of another color.
Note the blinking LED and its color, then
contact Black Box Technical Support.
The LES will not be operational until the
fault is fixed.
The LES completes There is a problem with the
its power-up and
serial connection or the set-up
boot procedures, but of the serial device.
there’s no noticeable
serial activity.
Check the terminal setup and the physical
connections, including the cable pinouts
(see Appendix C). Try another serial
device or cable, or cycle power on the
LES.
A rapidly-blinking OK LED
may signal boot failure.
Reboot the unit. When the LES is
running normally, the OK LED blinks
every two seconds.
B-1
LES Terminal Servers
Table B-1: Power-up Problems and Error Messages, cont.
Problem/Message Error
Remedy
The terminal shows a The LES is not connected
Boot> prompt rather properly to the Ethernet.
than a Local>
prompt.
The LES Ethernet address is
invalid.
Ensure that the LES is firmly connected
to a functional and properly-terminated
network node.
The LES passes
power-up
diagnostics, but
attempts to download
new Flash ROM
code from a network
host.
The LES Ethernet address is located on
the bottom of the unit. Use the Change
Hardware command to set the correct
address, then reboot.
Init Noboot command was
entered.
See Entering Commands at the Boot
Prompt on page B-4.
If the OK LED blinks rapidly,
the Flash ROM code may be
corrupt.
Reboot the unit. If you get the same
message, you will need to reload Flash
ROM. See Reloading Software on page
D-1.
If you did not request a TFTP
boot, the flash ROM code is
corrupt. The unit will remain in
boot mode.
B.2 DHCP Troubleshooting
Table B-2: DHCP Troubleshooting
Area to Check
Explanation
DHCP is enabled on the LES
Use the Set Server DHCP Enabled command.
If you manually enter an IP address, DHCP is automatically
disabled.
Make sure the DHCP server is
operational.
Check to see that the DHCP server is on and is functioning
correctly.
The LES gets its IP address
from the DHCP server
Refer to the DHCP Manager on your DHCP server for
information about addresses in use. If the DHCP server
doesn’t list your LES IP address, there may be a problem.
B-2
Appendix B: Troubleshooting
B.3 BOOTP Troubleshooting
If the BOOTP request is failing and you have configured your host to respond to the
request, check these areas:
Table B-3: BOOTP Troubleshooting
Area to Check
Explanation
BOOTP is in your system’s
/etc/services file
BOOTP must be an uncommented line in /etc/services.
The LES is in the loadhost’s
/etc/hosts file
The LES must be in this file for the host to answer a
BOOTP or TFTP request.
The download file is in the
correct directory and is worldreadable
The download file must be in the correct directory and
world-readable. Specify the complete pathname for the
download file in the BOOTP configuration file, or add a
default pathname to the download filename.
The LES and host are in the
same IP network
Some hosts will not allow BOOTP replies across IP
networks. Either use a host running a different operating
system or put the LES in the same IP network as the host.
B.4 RARP Troubleshooting
Table B-4: RARP Troubleshooting
Area to Check
Explanation
The LES name and hardware address
in the host’s /etc/ethers file
The LES name and hardware address must be in this
file for the host to answer a RARP request.
The LES name and IP address in the
/etc/hosts file
The LES name and IP address must be in this file for
the host to answer a RARP request.
The operating system
Many operating systems do not start a RARP server
at boot time. Check the host’s RARPD
documentation for details, or use the ps command to
see if there is a RARPD process running.
B-3
LES Terminal Servers
B.5 Modem Configuration Checklist
Most modem problems are caused by cabling mistakes or incorrect modem configuration.
However, the following items should be verified after any modem configuration, and rechecked when there is modem trouble.
◆
The modem must disconnect immediately when DTR is de-asserted.
◆
The modem must assert CD (or DSR, if connected) when connected to another modem. It must not assert CD when disconnected. The modem may optionally assert
CD during outbound dialing.
◆
The modem and LES must agree on the flow control method and baud rate scheme.
◆
The modem must not send result codes or messages to the LES except optionally
during outgoing calls.
◆
The modem should be set to restore its configuration from non-volatile memory
when DTR is dropped.
◆
The modem should be configured to answer the phone if incoming connections are
to be supported. Generally this is done with the ats0=1 command.
◆
The modem should not be configured to answer the phone unless the LES asserts
DTR.
◆
LES Modem control must be enabled. Using modems on ports without modem control enabled will lead to security problems.
◆
The LES Autobaud feature should be enabled only when required.
B.6 Entering Commands at the Boot
Prompt
If the Boot> prompt appears on the serial console instead of the Local> prompt, one of two
things may be wrong. Either the LES does not have enough information to boot, or the
network or flash boot has failed. If pressing the Return key does not display a prompt,
press any other key. The Boot> prompt should appear.
If the LES does not have enough information to boot, or the network or flash boot has
failed, it will print a message to the console and wait ten seconds for serial port activity. If
it detects serial port activity, it will continue booting provided the flash is good. However,
if the user presses a key during that time period, the LES will display the Boot> prompt.
Note:
B-4
If you see the message “Will attempt another download in x minutes,”
press any key for the Boot> prompt.
Appendix B: Troubleshooting
A series of commands called Boot Configuration Program (BCP) commands can be entered
at the Boot> prompt to configure the LES. These commands are a subset of the entire LES
command set. For example, a typical TCP/IP configuration might use the following
commands:
Figure B-1: BCP Command Examples
Boot> Set IPADDRESS 192.0.1.229
Boot> Set SOFTWARE /tftpboot/LES.SYS
Boot> Set LOADHOST 192.0.1.188
Boot> Set SECONDARY 192.0.1.22
Boot> FLASH
% Initialization begins in 5 seconds.....
These commands set the Server’s address, the software loadfile, and the loadhost’s IP
address (as well as that of a backup loadhost). The server then reboots using the Flash
command and will attempt to load the file LES.SYS from the host at 192.0.1.188.
Flush NVR
This command is used to restore the LES’s nonvolatile RAM to its factory default settings. It
will reset everything that is configurable on the
server, including the unit’s IP address.
Flash
This command will force the LES to download
new operational code and reload it into Flash
ROM. This is necessary when a new version of
software is released and you wish to upgrade
your unit. If the server cannot download the file,
the code in Flash ROM will still be usable.
Help
Displays a one-page summary of available
commands and what they do.
Init 451
Reboots the LES after it has been configured. If
the LES can find and load the specified software loadfile, it will restart itself with full functionality. If the loadfile is not found, the server
will attempt to reload continuously. If there is
an error, or if the console’s Return key is
pressed, the LES will re-enter the Boot Configuration Program.
Set BOOTP {Enabled, Disabled}
Enables or disables the sending of BOOTP queries during the boot sequence. It is enabled by
default.
Set DHCP {Enabled, Disabled}
Enables or disables the sending of DHCP queries during the boot sequence. It is enabled by
default.
B-5
LES Terminal Servers
Set Hardware xx-xx-xx
Specifies the last three numbers of the server’s
Ethernet address. The first three numbers will
be supplied automatically.
The Ethernet address should have been set at
the factory. Setting an incorrect address could
cause serious network problems.
Set IPAddress ip_address
Specifies this server’s IP address. Uses the standard numeric format.
Set Loadhost ip_address
Specifies the host to attempt to load the file
from. The IP address should be in standard numeric format (no text names are allowed).
Set RARP {Enabled, Disabled}
Enables or disables the sending of RARP queries during the boot sequence. It is enabled by
default.
Set Secondary ip_address
Specifies a backup loadhost. The IP address
should be in standard numeric format (no text
names are allowed). The backup loadhost will
be queried if the primary host cannot load the
server.
Set Software filename
Specifies the name of the file to load. The LES
will automatically add .SYS to the filename you
specify. Note that all protocols must have a filename specified (either the default or set by the
user). For more information, see Appendix D.
TCP/IP users must use the Software option to
specify the loadhost, the loadfile, and their own
network address.
TFTP users can specify a complete path name
(up to 31 characters) if the file is located in a directory other than the default.The case of the
filename must match that of the filename loaded onto the host computer.
Show Server
B-6
Use this command when issuing other commands to view the current LES setup.
Appendix C: Pinouts
C: Pinouts
C.1 Ethernet Connector
Figure C-1: RJ45 Ethernet Connector
12345678
1
2
3
6
RX+
RXTX+
TX-
C.2 RJ45 Serial Connectors
LES servers are RS-423 compliant, and are thus limited by the equipment at the remote
end of the serial line. If the is connected to an RS-232 device, it is subject to RS-232
limits: 15m (50 ft.) in length at 9600 baud, and to 2m (6 ft.) at 115.2K baud, although
longer lengths will generally work.
Figure C-2: RJ45 Serial Connector
12345678
1
2
3
4
5
6
7
8
RTS (out)
DTR (out)
TX+ (out)
TXRXRX+ (in)
DSR (in)
CTS (in)
C-1
LES Terminal Servers
C.2.1 RJ45 to DB25
If you are connecting an RJ45 port to a DTE device (such as a terminal) that has a DB25
connector, you will need to use an RJ45-DTE DB25 adapter. To connect an RJ45 port to a
DB25 connector on a DCE device, you will need an RJ45-DCE DB25 adapter. The pinout
information for both connections is shown in Figure C-3.
Figure C-3: Pinouts of RJ45-DB25 Connections
DTE - DB25 Adapter Pinout
RJ45
Serial
Port
CTS
(in)
8
6
DSR
(in)
7
RX+
(in)
64
5
Cable
8
DCE - DB25 Adapter Pinout
RJ45-DB25
Adapter
RJ45
DB25
(terminal)
(Server)
1
1
4
RJ45
Serial
Port
2
2
20
DTR
6
3
3
2
TXD
RX-
53
5
4
4
TX-
42
4
5
5
7
8
DSR
(in)
7
RX+
(in)
RX-
8
1
1
5
CTS
7
2
2
8
DCD
64
6
3
3
3
RXD
53
5
4
4
TX-
42
4
5
5
7
SG
TX+
(out)
3
3
6
6
2
TXD
DTR
(out)
2
2
7
7
20
DTR
RTS
(out)
1
8
8
4
RTS
RTS
7
CTS
(in)
RJ45-DB25
Adapter
RJ45
DB25
(modem)
(Server)
Cable
6
5
SG
TX+
(out)
3
3
6
6
3
RXD
DTR
(out)
2
2
7
7
6
DSR
RTS
(out)
1
1
8
8
5
CTS
1
The arrows in Figure C-3 represent the direction of the signal. The pinouts assume that the
8-conductor cable connecting the LES and the adapter block is a swapped cable. Both the
transmit and receive ground signals on the LES connector are wired to the signal ground
on a DB25 adapter.
Figure C-4: RJ45 to DCE DB25 Adapter
RJ45- DCE DB25
wire connections
RJ45
DB25
(modem)
(server)
Adapter
88
6 4 22
77 5 3 1
1
5
CTS
2
8
DCD
3
3
RXD
7
SG
Back of DB25 connector
4
25
5
C-2
1
13
6
2
TXD
7
20
DTR
8
ADAPTER NOTE:
It is important to wire
the adapter in the correct
orientation. The diagram shows
how the adapter will look to you
if you are holding it correctly.
4
RTS
14
DB25 NOTE:
This example displays
a male DB25 connector.
If wiring to a female DB25
connector, the pinout wil be
exactly the opposite.
Appendix C: Pinouts
You can use a crimper block to connect both transmit and receive grounds from the RJ45
cable to the single signal ground on the DB25. The connector internally “splices” the two
wires together and provides one wire into the DB25 connector as shown below.
Figure C-5: Wire Splicer
Sealed at this end
RJ45 Tx Return
RJ45 Rx Return
DB9 Signal Ground
To splice the wires, cut off the end of the wire that does not extend through the connector
and insert both wires into the connector. Make sure that the wire that does not extend
through the connector is in as far as possible to ensure a solid connection. Make sure that
the wire that does extend through the connector extends far enough on the other side to be
inserted in to the DB25 connector. Carefully squeeze the connector using a pair of pliers to
make sure it is fully latched.
C.2.2 RJ45 to DB9
Figure C-6: RJ45-DTE DB9 Adapter
RJ45
Serial
Port
RJ45-DB9
Adapter
Cable
RJ45
(Server)
CTS
(in)
8
6
8
1
DSR
(in)
7
5
7
2
RX+
(in)
6
4
6
RX-
53
TX-
DB9
(terminal)
1
7
RTS
2
4
DTR
3
3
3
TXD
5
4
4
42
4
5
5
5
SG
TX+
(out)
3
3
6
6
2
RXD
DTR
(out)
2
2
7
7
6
DSR
RTS
(out)
1
1
8
8
8
CTS
The arrows in Figure C-6 represent the direction of the signal. The pinouts assume that the
8-conductor cable connecting the LES and the adapter block is a swapped cable. Both the
transmit and receive ground signals on the LES connector are wired to the signal ground
on a DB9 adapter.
The information about crimping the RJ45 ground wires in Section C.2.1, RJ45 to DB25
applies to the DB9 connector as well.
C-3
LES Terminal Servers
C.3 LES2700A-422 Serial Connectors
The LES2700A-422 has 16 DB9 serial ports. Port 1 is switchable between RS-422 and RS232 serial modes. Ports 2-16 are RS-422 only.
Figure C-7: DB9 RS-232/RS422 Serial Connector
5
9
1
6
Table C-1: LES2700A-422 DB9 Serial Connector Signals
Pin
RS-232 Mode
1
RS422 Notes
GND
Ground
(output) When asserted, RTS+ should be at a
higher voltage than RTS-
2
RX
RTS+
3
TX
RTS-
4
5
CTS+
GND
6
CTSRX-
7
RTS
RX+
8
CTS
TX-
9
C-4
RS-422 Mode
TX+
(input) Will read as asserted when CTS+ is
at a higher voltage than CTS(input) When data is not being received,
RX+ will be at a higher voltage than RX(output) When data is not being transmitted,
TX+ will be at a higher voltage than TX-
Appendix D: Updating Software
D: Updating Software
D.1 Choosing the Right Software File
Black Box intends to provide multiple software files for the LES models. Each software
file will contain the core LES operating code for that particular model.
Table D-1: Available LES Software
Software File Name
Models Supported
LES2700A_16.SYS
LES2700A-16
LES2700A_32.SYS
LES2700A-32
LES2700A_422.SYS
LES2700A-422
D.2 Obtaining Software
Current software files (LES.SYS) are available on the distribution CD. Contact Black Box
Technical Support if you do not have the CD.
D.3 Reloading Software
The LES stores software in Flash ROM to control the initialization process, operation, and
command processing. The contents of Flash ROM can be updated by downloading a new
version of the operational software via NetWare, TCP/IP, or MOP. Regardless of which
protocol is used to update Flash ROM, the following points are important:
◆
The Flash ROM software file name, LES.SYS, should not be changed.
◆
The download file should be world-readable on the host.
◆
There is a sixteen character length limit for the path name.
◆
There is a twelve character limit for the filename.
◆
Define commands must be used because Set configurations are cleared when the
LES boots. Use the List Server Boot command to check settings before rebooting.
Note:
It is important to check LES settings before using the Initialize Reload
command to ensure that you are reloading the correct software file.
D-1
LES Terminal Servers
D.3.1 Reloading Sequence
If DHCP, BOOTP, or RARP is enabled on the LES, the LES will request assistance from
a DHCP, BOOTP, or RARP server before starting the download attempts. The LES will
then try TFTP, NetWare, and MOP booting (in that order) provided that it has enough
information to try each download method.
Downloading and rewriting the Flash ROM will take approximately two minutes from the
time the Initialize command is issued. If the download file cannot be found or accessed,
the LES can be rebooted with the code still in Flash ROM. The OK/ACT LED will blink
quickly while the LES is booting (and reloading code) and then slowly when it returns to
normal operation.
Note:
If you experience problems reloading Flash ROM, refer to Troubleshooting Flash ROM Updates on page D-3.
D.3.1.1 TCP/IP
Before the LES downloads the new software, it will send DHCP, BOOTP, and/or RARP
queries (all are enabled by default). Next, the LES will attempt to download the LES.SYS
file using TFTP (Trivial File Transfer Protocol).
Note:
NetSet can also be used to reload software.
If a host provides DHCP, BOOTP, or RARP support, it can be used to set the LES IP
address (all methods) and loadhost information (BOOTP and RARP only).
Some BOOTP and TFTP implementations require a specific directory for the LES.SYS
file. See your host’s documentation for instructions.
To manually configure the LES IP parameters for software reload, use the following
commands.
Figure D-1: Configuring TCP/IP Reload
Local> SET PRIVILEGED
Password> SYSTEM (not echoed)
Local>> DEFINE SERVER IPADDRESS nnn.nnn.nnn.nnn
Local>> DEFINE SERVER SOFTWARE “/tftpboot/LES.SYS”
Local>> DEFINE SERVER LOADHOST nnn.nnn.nnn.nnn
Local>> LIST SERVER BOOT
Local>> INITIALIZE RELOAD
Note:
For instructions on how to log into the LES to enter these commands,
see the Getting Started chapter.
The path and filename are case-sensitive and must be enclosed in quotation marks. When
attempting to boot across an IP router, you must configure the router to proxy-ARP for the
LES, or use the bootgateway feature. For more information, see Set/Define Bootgateway
in the Commands chapter of the Terminal Server Reference Manual located on the CDROM.
D-2
Appendix D: Updating Software
D.3.1.2 NetWare
The LES.SYS file should be placed in the login directory on the NetWare file server. The
LES cannot actually log into the file server (since it knows no username/password); it can
only access files in the login directory itself. On the LES, specify the file server name,
filename, and path.
Figure D-2: Configuring NetWare Reload
Local> SET PRIVILEGED
Password> SYSTEM (not echoed)
Local>> DEFINE SERVER NETWARE LOADHOST fileserver
Local>> DEFINE SERVER SOFTWARE SYS:\LOGIN\LES.SYS
Local>> INITIALIZE RELOAD
D.3.1.3 MOP
The LES.SYS filename is the only parameter that the LES needs to reload via MOP. Make
sure the service characteristic is enabled on the host’s Ethernet circuit, copy the LES.SYS
file to the MOM$LOAD directory, and reload the LES using the Initialize Reload
command. Be sure to use binary mode for the file transfer.
D.4 Troubleshooting Flash ROM Updates
Many of the problems that occur when updating the Flash ROM can be solved by
completing the following steps:
Table D-2: Flash ROM Troubleshooting
Protocol
Area to Check
NetWare
Ensure the file is in the login directory. Since the LES cannot actually log into the
file server, it has very limited access to the server directories.
TFTP
Check the file and directory permissions.
Ensure the loadhost name and address are specified correctly and that their case
matches that of the filenames on the host system.
Ensure the file and pathnames are enclosed in quotes to preserve case.
Ensure that TFTP is enabled on the host; several major UNIX vendors ship their
systems with TFTP disabled by default.
MOP
The Ethernet circuit must have the service characteristic enabled.
Ensure that the MOM$LOAD search path includes the directory containing the
LES.SYS file.
D-3
Appendix E: Specifications
E: Specifications
E.1 Power Information
E.1.1 Power Requirements
Voltage:
110 V AC US, 220 V AC International
Frequency:
47-63 Hz
Operating Current:
700 mA @ 6 V
Power Consumption:
4.2 Watts maximum
Fuse Rating
1.6A, 250 Volts
E.1.2 Power Supply Cord
Cord type:
3 conductors, 1.0 mm2 minimum conductor size (approximately 18 AWG)
Rated for:
250 Volts AC, 10 Amps
Length:
3.0 meters
E.2 Environmental Limitations
E.2.1 Temperature
Operating range:
5° to 50° C (41° to 122° F)
Storage range:
-40° to 66° C (-40° to 151° F)
Max temp. change/hr:
20° C (36° F)
Rapid temperature changes may affect operation. Therefore, do not operate the LES near
heating or cooling devices, large windows, or doors that open to the outdoors.
E-1
LES Terminal Servers
E.2.2 Altitude
Operating maximum:
2.4 km (8,000 ft)
Storage maximum:
9.1 km (30,000 ft)
If operating the LES above 2.4 km (8000 ft.), decrease the operating temperature rating by
1° F for each 1000 ft.
E.2.3 Relative Humidity
E-2
Operating range:
10% to 90% noncondensing, 40% to 60% recommended
Storage range:
10% to 90% noncondensing
Appendix F: Frequently-used Commands
F: Frequently-used Commands
This appendix lists some of the most frequently-used commands of the Terminal Server
command set. More information about the command set, including additional options,
can be found in the Terminal Server Reference Manual located on the CD-ROM.
F.1 Conventions
Please note the following before continuing:
◆
Commands are divided into Server (general), Port, and Protocol sections. Within
each section, commands are listed alphabetically.
◆
Commands may require privileged user status. Enter Set Privileged, then enter
the privileged password when prompted.
◆
When you enter a Define (or Purge) command, you must reboot the LES for the
command to take effect. Alternately, you can issue several Set commands and
then a Save command to make the Set commands take effect without rebooting.
◆
When the abbreviated syntax “{EN/DIS}” is shown, you must choose either Enabled or Disabled to complete the command.
When nn is shown, enter a single port number, a list of port numbers separated by commas, a range of port numbers separated by dashes, or the word all.
F-1
LES Terminal Servers
F.2 Server Commands
Table F-1: Frequently-used Server Commands
Command
Option(s)
Description
CONNECT option
servicename
Makes a connection to a LAT service.
LOCAL num
Makes a connection to the specified local port.
RLOGIN host
Makes an Rlogin connection to the specified
host (text name or numeric IP address).
TCP host
Makes a raw TCP connection to the specified
host (text name or numeric IP address).
TELNET host
Makes a Telnet connection to the specified host
(text name or numeric IP address).
DEFINE SERVER BOOTP {EN/DIS}
Enables or disables querying for a BOOTP host
at system boot time.
DEFINE SERVER DHCP {EN/DIS}
Enables or disables querying for a DHCP host at
system boot time.
DEFINE SERVER GATEWAY ipaddr
Specifies the host to be used as a TCP/IP gateway to forward packets between networks.
Enter an IP address.
DEFINE SERVER
INCOMING option
BOTH
Enables incoming LAT and Telnet connections.
LAT
Enables only incoming LAT connections.
NONE
Disables incoming connections.
TELNET
Enables only incoming Telnet connections.
PASSWORD
Causes the LES to prompt for a password for all
incoming connections.
NOPASSWORD
Allows connections to be established without
prompting for a password.
DEFINE SERVER IPADDRESS ipaddr
Sets the LES’s network IP address.
DEFINE SERVER LOADHOST ipaddr
Specifies the TCP/IP host from which the LES
requests its run-time code.
DEFINE SERVER LOGIN PASSWORD
Sets a new password that will be required before
incoming logins are accepted. You will be
prompted for the new password (up to 6 alphanumeric characters, case-insensitive).
DEFINE SERVER NAME “newname”
Specifies a new name for the LES. Names are
restricted in length; generally a name of 11 or
fewer characters is permissible.
F-2
Appendix F: Frequently-used Commands
Table F-1: Frequently-used Server Commands, cont.
Command
Option(s)
Description
DEFINE SERVER NETWARE LOADHOST
server
Specifies the NetWare host from which the LES
requests its run-time code. Enter a file server
name of up to 11 characters.
DEFINE SERVER PRIVILEGED PASSWORD
Sets a new password that will be required for
privileged user status. You will be prompted for
the new password (up to 6 alphanumeric characters, case-insensitive).
DEFINE SERVER RARP {EN/DIS}
Enables or disables querying for a RARP host at
system boot time.
DEFINE SERVER SOFTWARE “filename”
Specifies the name or path (TCP) of the software download file. The filename can be up to
11 characters, and the pathname can be up to 26.
The LES will add a “.SYS” extension.
DEFINE SERVER SUBNET MASK ipmask
Specifies the subnet mask to be used for the
LES. The ipmask must be in n.n.n.n format.
HELP option
<nothing>
Displays a list of top-level (general) Help topics.
<keyword>
Displays information about the keyword(s)
entered. Multiple keywords must be specified in
the order they occur in a command.
DEFINE SERVICE “name” PORT num
DEFINE SERVICE
“name” option
Creates a new service and associates it with the
specified port.
APPLETALK {EN/DIS} Toggles whether the named service can be used
to service networks running the specified protoLANMAN {EN/DIS}
col. RTEL applies to TCP/IP networks.
LAT {EN/DIS}
NETWARE {EN/DIS}
RTEL {EN/DIS}
F-3
LES Terminal Servers
Table F-1: Frequently-used Server Commands, cont.
Command
Option(s)
Description
DEFINE SERVICE
“name” option
DLC {EN/DIS}
Specifies which service will handle print
requests from DLC hosts. DLC can be enabled
on one service per LES.
BANNER {EN/DIS}
When Enabled, causes the LES to print a banner
page before jobs.
BINARY {EN/DIS}
When Enabled, the LES will not process data
passed through the service. This characteristic
should be enabled when printing PCL data.
EOJ string
Causes the LES to send an end-of-job string to
the attached device after every job. Enter an end
string or the word none.
FORMFEED {EN/DIS} When Enabled, causes the LES to append a
formfeed to the end of LPR print jobs.
POSTSCRIPT
{EN/DIS}
When Enabled, causes the LES to assume the
attached device is a PostScript device and act
accordingly.
PSCONVERT {EN/DIS} When Enabled, causes the LES to place a PostScript wrapper around each job.
DEFINE SERVICE
“name” option
INITIALIZE option
F-4
SOJ string
Causes the LES to send a start-of-job string to
the attached device before every job. Enter a
start string or the word none.
TCPPORT string
Specifies a raw TCP listener socket for the service. Enter a socket number (4000 to 4999) or
the word none.
TELNETPORT string
Specifies a TCP listener socket for the service.
Unlike TCPport, this option performs Telnet
IAC interpretation on the data stream. Enter a
socket number (4000 to 4999) or the word none.
DELAY num
Schedules a reboot after num minutes. Enter a
value from 0 to 120.
CANCEL
Cancels an impending initialization.
FACTORY
Reboots the LES to its factory default settings.
NOBOOT
Forces the LES to stop in Boot Configuration
Mode rather than fully rebooting.
RELOAD
Forces the LES to download new operational
code and reprogram its flash-ROM.
Appendix F: Frequently-used Commands
Table F-1: Frequently-used Server Commands, cont.
Command
Option(s)
Description
LOGOUT option
<nothing>
Logs out the current port (the port that issued
the command).
PORT num
Logs out the specified port.
LOCAL
Removes the definitions of all local services.
“service”
Removes the definition of the specified service.
PURGE SERVICE
option
SET PRIVILEGED
Enters privileged mode, provided the user enters
the proper privileged password when prompted.
{SHOW/MONITOR} QUEUE
Displays the status of LES queues once (Show)
or continually every three seconds (Monitor).
{SHOW/MONITOR}
SERVER
<nothing>
Displays LES information once (Show) or continually every three seconds (Monitor).
COUNTERS
Displays characteristics related to the various
counters kept by the LES.
<nothing>
Displays characteristics about all configured
services once (Show) or continually every three
seconds (Monitor).
“service”
Displays only characteristics related to the
named service.
ALL
Zeroes all port, node, and server counters.
PORT num
Zeroes port counters for the specified port.
{SHOW/MONITOR}
SERVICE option
ZERO COUNTERS
option
F.3 Port Commands
In the following commands, “1” can be a single port number, a list of port numbers separated by commas, a range of port numbers separated by dashes, or the word all.
Table F-2: Port Commands
Command
Option(s)
Description
DEFINE PORT 2
ACCESS option
DYNAMIC
The port can initiate and receive connection
requests.
LOCAL
The port can initiate connection requests, and local
logins are permitted.
NONE
The port is unusable.
REMOTE
The port can receive host-initiated connection
requests.
F-5
LES Terminal Servers
Table F-2: Port Commands, cont.
Command
Option(s)
Description
DEFINE PORT 2 BITRONICS {EN/DIS}
When Enabled, ensures bidirectional functioning of
the parallel port. The attached printer must also support Bitronics mode.
DEFINE PORT 2 CHARACTER size
Toggles the port between 7-bit and 8-bit characters
(the default). Enter either 7 or 8.
DEFINE PORT 2 DSRLOGOUT {EN/DIS}
When Enabled, the port will be logged out automatically whenever DSR is deasserted.
DEFINE PORT 2 DTRWAIT {EN/DIS}
When Enabled, the LES will not assert DTR on the
port when it is idle (no user logins or connections).
DEFINE PORT 2 FLOW CTS
option
{EN/DIS}
Specifies CTS/RTS (hardware) flow control.
Activates or deactivates the currently-configured
flow-control method.
NONE
Removes the current flow control settings.
XON
Specifies XON/XOFF (software) flow control.
DEFINE PORT 2 NAME “newname”
Enter a name of up to 16 alphanumeric characters
for the specified port.
DEFINE PORT 2
PARITY option
parity
Enter even, odd, mark, or space. Specifying mark
or space will change the character size to 7 bits.
NONE
Specifies that no parity will be used (the default).
DEFINE PORT 2 SPEED baudnum
Sets the port’s baud rate. Acceptable baudnum values range from 300 to 230000 baud.
{SHOW/MONITOR} PORT 2
Displays the port’s configuration characteristics
once (Show) or continually every three seconds
(Monitor). Counters and Status keywords can be
added.
TEST PORT 2 option
COUNT rows
WIDTH cols
Sends an ASCII data stream to the port for the specified number of rows and/or columns.
POSTSCRIPT
Sends a PostScript test page to the port.
F-6
Appendix F: Frequently-used Commands
F.4 Protocol Commands
In the following table, PROTO is an abbreviation for the optional keyword PROTOCOL.
Table F-3: Protocol Commands
Command
Option(s)
Description
DEFINE PROTO
APPLETALK option
{EN/DIS}
Enables or Disables the AppleTalk protocol for
the LES.
ZONE newzone
Places the LES in a zone other than the default.
{EN/DIS}
Enables or Disables the TCP/IP protocol for the
LES.
GATEWAY ipaddr
See DEFINE SERVER GATEWAY ipaddr.
IPADDRESS ipaddr
See DEFINE SERVER IPADDRESS ipaddr.
LOADHOST ipaddr
See DEFINE SERVER LOADHOST ipaddr.
DEFINE PROTO IP
option
NAMESERVER ipaddr Specifies the IP address of the host that will
resolve text host names into their numeric equivalents for TCP/IP connection attempts.
DEFINE PROTO
LANMAN option
{EN/DIS}
DEFINE PROTO LAT {EN/DIS}
option
DEFINE PROTO
NETWARE option
Enables or Disables the LAN Manager protocol
for the LES.
Enables or Disables the LAT protocol for the
LES.
LICENSE string
Enables LAT on multi-port LES’s. Enter the
license string obtained from Black Box.
{EN/DIS}
Enables or Disables the NetWare (IPX) protocol
for the LES.
DSCONTEXT string
Configures the NetWare Directory Services context in which the LES is located. For more information about NDS contexts, see your NDS
documentation.
DSLICENSE string
Configures the NetWare Directory Services
license needed to enable NDS on your LES. Enter
the license string obtained from Black Box.
DSTREE string
Configures the NetWare Directory Services tree
in which the LES is located. For more information about NDS trees, see your NDS documentation.
F-7
LES Terminal Servers
Table F-3: Protocol Commands, cont.
Command
Option(s)
Description
DEFINE PROTO
NETWARE
ENCAPSULATION
option {EN/DIS}
NATIVE
Configures the LES to use the “native mode”
frame format.
ETHER_II
Configures the LES to use Ethernet v2 frame format.
802_2
Configures the LES to use 802.2 frame format
with NetWare SAPs.
SNAP
Configures the LES to use 802.2 frame format
with SNAP SAPs.
DEFINE PROTO NETWARE LOADHOST
server
See DEFINE SERVER NETWARE LOADHOST
server.
PURGE IPSECURITY ALL
option
ipaddress
Removes the entire IP security table.
PURGE PROTO NET- ALL
WARE ACCESS
server
option
{SHOW/MONITOR} PROTO protocolname
F-8
Removes entries from the IP security table that
are related to the specified IP address.
Removes all entries from the NetWare access list.
Removes entries from the NetWare access list that
are related to the specified file server.
Displays operating characteristics of the specified
protocol.
LES Terminal Servers
Declaration of Conformity
(according to ISO/IEC Guide 22 and EN 45014)
Manufacturer’s Name:
Black Box
Declares that the product:
Manufacturer’s Address:
1000 Park Drive, Lawrence, PA 15055 USA
Product Name:
Terminal Server
Model Name/Number:
LES2700A-16, LES2700A-32, LES2700A-422
Conforms to the following standards:
Safety:
EN 60950:1988 + A1, A2
EMC:
Based upon EN 55022:1995 class A
EN 50082-1:1992
50082-1:1992
Immunity
Based upon 50081-2: Generic Immunity Standard
IEC 801-2:1991/Level 3
IEC 801-3:1984/Level 2
IEC 801-4:1988/Level 2
Supplementary Information:
The product complies with the requirements of the
Low Voltage Directive 72/23/EEC and the EMC Directive 89/336/EEC.
Manufacturer’s Contact:
Black Box
1000 Park Drive, Lawrence, PA 15055 USA
General Tel: 724/746-5500
Fax: 724/746-0746
LES Terminal Servers
FCC Requirements
For Telephone-Line Equipment
1. The Federal Communcations Commission (FCC) has established rules which permit this
device to be directly connected to the telephone network with standardized jacks. This
equipment should not be used on party lines or coin lines.
2. If this device is malfunctioning, it may also be causing harm to the telephone network;
this device should be disconnected until the source of the problem can be determined and
until the repair has been made. If this is not done, the telephone company may temporarily
disconnect service.
3. If you have problems with your telephone equipment after installing this device, disconnect this device from the line to see if it is causing the problem. If it is, contact your supplier
or an authorized agent.
4. The telephone company may make changes in its technical operations and procedures.
If any such changes affect the compatibility or use of this device, the telephone company
is required to give adequate notice of the changes.
5. If the telephone company requests information on what equipment is connected to their
lines, inform them of:
a. The telephone number that this unit is connected to.
b. The ringer equivalence number.
c. The USOC jack required: RJ-11C
d. The FCC registration number.
Items (b) and (d) can be found on the unit’s FCC label. The ringer equivalence number
(REN) is used to determine how many devices can be connected to your telephone line. In
most cases, the sum of the RENs of all devices on any one line should not exceed five (5.0).
If too many devices are attached, they may not ring properly.
6. In the event of an equipment malfunction, all repairs should be performed by your supplier or an authorized agent. It is the responsibility of users requiring service to report the
need for service to the supplier or to an authorized agent.
LES Terminal Servers
Certification Notice For
Equipment Used In Canada
The Canadian Department of Communications label identifies certified equipment. This
certifacation means that the equipment meets certain telecommunications-network protective, operation, and safety requirements. The Department does not guarantee the equipment
will operate to the user’s satisfaction.
Before installing this equipment, users should ensure that it is permissible to be connected
to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single-line individual service may be extended by means of a certified
connector assembly (extension cord). The customer should be aware that compliance with
the above conditions may not prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian maintenance facility--in this case, your supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to
request the user to disconnect the equipment.
Users should ensure for their own protection that the electrical ground connections of the
power utility, telephone lines, and internal metallic water pipe system, if present are connected together. This precaution may be particularly important in rural areas.
CAUTION:
Users should not attempt to make such connections themselves, but
should contact the appropriate electric inspection authority, or electrician, as appropriate.
The LOAD NUMBER (LN) assigned to each terminal device denotes the percentage of the
total load to be connected to a telephone loop which is used by the device, to prevent overloading. The termination on a loop may consist of any combination of devices, subject only
to the requirement that the total of the load numbersof all the devices does not exceed 100.
LES Terminal Servers
Federal Communications Commission
And
Canadian Department of Communications
Radio Frequency Interface Statements
This equipment generates, uses, and can radiate radio frequency energy and if not installed
properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communicaton. It has been tested and found to comply with the limits for
Class A computing device in accordance with the specifications in Subpart J of Part 15 of
FCC rules, which are designed to provide reasonable protection against such interference
when the equipment is operated in a commercial environment. Operation of this equipment
in a residential area is likely to cause interference, in which case the user at his own expense
will be required to take whatever measures may be necessary to correct the interference.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio Interference Regulation of the Canadian department of
Communications.
Index
Index
Symbols
/etc/hosts 18
A
Access list, NetWare 30
AppleTalk 37–38
Chooser 37
Configuration 37
Router 37
Troubleshooting 38
Zones 37, 38
Application port, LAT 35
Applications 9
ARP table 18
Autobaud B-4
B
Banner 20, 27
BCP (Boot Configuration Program)
B-5
Bindery 29
Bitronics 37
Black Box
Contact information A-1
Technical support A-1
Boot prompt B-1, B-4
BOOTP 17, 19, 33, D-2
Troubleshooting B-3
Bracket, rack mount 5
C
CD (Carrier Detect) B-4
Centronics 37
Chooser (Macintosh) 37
CLI (Command Line Interface) 17,
19
Comm Port Redirector 16
Commands F-1–F-8
Configuration
AppleTalk 37
Initial setup 7
LAT 35
NetWare 29
TCP/IP 17
Console terminal 8
Contact information A-1
D
DB25 C-2
DB9 C-3
Defaults, restoring B-5
DHCP 19, B-2, B-5, D-2
Troubleshooting B-2
Digital Network Port 39
Displaying current settings B-6
DOS 18
Download file B-3
DSR (Data Signal Ready) B-4
DTR (Data Transmit Ready) B-4
E
Error codes, LAT 36
Ethernet
Address B-6
Ethernet address 18
Ethernet connector C-1
Ethernet, connecting to 6
EtherTalk 37
i
LES Terminal Servers
F
Factory defaults B-5
Filters, input/output 20
Flash D-1
Troubleshooting D-3
Updates B-1, D-1
Flash ROM B-2
Reloading B-5
Flush NVR B-5
H
Hardware address 18, B-3, B-6
I
If 7
Incoming logins 8
Install 6
Installation
Instructions, LES 5
Installation, testing 6
Introduction 1
IP
UDP 16
IP address 7, 17, 23, 29, 35, 37, 39,
B-1, B-3
Configuring 17, B-6
Configuring via BOOTP 19
Configuring via command line
19
Configuring via DHCP 19
Configuring via Ping 17
Configuring via RARP 19
IPX (NetWare) 29–31
J
Java 7
L
LAN Manager 39–40
ii
LAT 8, 35
Application port 35
Error codes 36
Printing to port 35
Printing to service 35
Queue 35
Troubleshooting 36
LEDs 4, B-1
Loadfile B-6
Loadhost B-6
Local prompt B-2
Local> prompt 8, 17
LocalTalk 37
Login
Web browser 7
Logins
Incoming 8
Password 7, 8
Remote console 7
Service 8
lpc 27
LPD 24, 37, 39
LPR 19, 24
AIX 24
HP 25
Print command 24
SCO Unix 26
UNIX (Generic) 23
Windows NT 20
lpstat 27
M
Macintosh 37
Chooser 37
EtherTalk 37
LocalTalk 37
OS 8.1 and LPD 37
Zones 38
Modem
Configuration checklist B-4
Index
Monitoring counters B-4
MOP
Reloading software D-3
N
Named pipe interface 20
Nameserver 18
NDPS 29
NDS 29
Directory service context 29
Directory service tree 29
License 29
NetSet 6, 7, 8, 17, 29, 35, 37, 39
NetWare 29–31
Access list 30
Administrator 29, 30
Bindery 29
NDS 29
PCONSOLE 31
Reloading software D-3
Troubleshooting 31
NVRAM B-5
Power-up troubleshooting B-1
Print pipe 27
Print queue 8, 20, 25, 26, 31, 35, 40
Printcap file 27
Printing to a queue 24, 25, 36
Privileged password 7, F-1
Problem report procedure A-1
Prompt, Local> 8
Prompts
Boot B-1, B-4
Local B-2
Protocols 1
AppleTalk 37
LAT 35
NetWare 29
TCP/IP 17
Protocols supported 1
Q
QINST 29
Queue 1, 8, 20, 25, 26, 30, 31, 35, 40
R
P
Parallel port
Service 8
Passwords
Login 7, 8
Privileged 7, F-1
PCONSOLE 29, 31
Ping 17
Pinouts C-1
Ports
Serial C-1
PostScript 37
Power
Cord E-1
Specifications E-1
Troubleshooting B-1
Rack mount bracket 5
RARP 17, 19, B-3, B-6, D-2
RARPD process B-3
Troubleshooting B-3
Rebooting B-5
Redirector 16
Reloading software B-5, D-1
MOP D-3
NetWare D-3
TCP/IP D-2
Remote console logins 7
Remote printer 8
Remote queue 8
Restoring defaults B-5
RJ45 C-1, C-2, C-3
RS-232 C-1
iii
LES Terminal Servers
BOOTP B-3
DHCP B-2
Flash (software) updates D-3
LAT 36
Modems B-4
NetWare 31
Power-up B-1
RARP B-3
Unix 28
Tunnel, serial 15
RS-423 C-1
RTEL 19, 20, 27
S
SAM 25
Sample network diagram
ETS16/32PR 5
Serial port
Connectors C-1
Service 8
Serial tunnel 15
Server 7
Name, default 27
Service 7, 8, 31, 35, 37
Name 27
SMIT 24
Software file B-3, D-1
Software updates D-1
Specifications E-1
Altitude E-2
Environmental E-1
Power E-1
Relative Humidity E-2
Temperature E-1
Spooling directory 20
System Administration Mgr (SAM)
25
System Mgmt Interface Tool (SMIT)
24
T
TCP/IP 17–28, 39, B-1
Reloading software D-2
Telnet 8, 18, 28
TFTP D-2
The 7, 17, 29, 35, 37, 39
ThinWeb Manager 7
Troubleshooting B-1–B-6
AppleTalk 38
iv
U
UDP 16
UNIX named pipe interface 27
Updating software D-1
V
VMS 35, 36
W
Web browser interface 7
Windows 18, 20, 39
Z
Zones, AppleTalk 37, 38
The information in this guide may change without notice. The manufacturer assumes no
responsibility for any errors which may appear in this guide.
AppleTalk, Chooser, and Macintosh are trademarks of Apple Computer Corporation.
LaserJet and Bitronics are trademarks of Hewlett Packard. Centronics is a registered
trademark of Centronics Data Computer Corporation. PostScript is a trademark of Adobe
Systems, Inc. DEC and LAT are trademarks of Digital Equipment Corporation. Ethernet is
a trademark of XEROX Corporation. NetWare is a trademark of Novell Corporation.
UNIX is a registered trademark of The Open Group. Windows for Workgroups, Windows
95, Windows 98, Windows 2000, and Windows NT are trademarks of Microsoft
Corporation.
Copyright 2000, Black Box. All rights reserved. No part of the contents of this book may
be transmitted or reproduced in any form or by any means without the written permission
of Black Box. Printed in the United States of America.
The revision date for this manual is 25 October, 2000.
Part Number: 900-218
Rev. A
WARNING
This product has been designed to comply with the limits for a Class A digital device
pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable
protection against such interference when operating in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy, and if not installed and
used in accordance with this guide, may cause harmful interference to radio
communications.
Operation of this equipment in a residential area is likely to cause interference in which
case the user, at his or her own expense, will be required to take whatever measures may
be required to correct the interference.
Changes or modifications to this device not explicitly approved by Black Box will void the
user’s authority to operate this device.
Cet appareil doit se soumettre avec la section 15 des statuts et règlements de FCC. Le
fonctionnement est subjecté aux conditions suivantes:
(1) Cet appareil ne doit pas causer une interférence malfaisante.
(2) Cet appareil doît accepter n'importé quelle interférence reìue qui peut causer une
opération indésirable.
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