Tut Systems XL-12000S User Manual

XL-12000S

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MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

XL-12000S

Warranty Policy

Warranty Summary

This Tut Systems product is warranted against defects in material and workmanship and will substantially
conform to Tut Systems product documentation for a period of one (1) year from the date of shipment.

Y2K Compliance
The Company’s products, including separately sold software applications, are designed to be used prior
to, during, and after the calendar year 2000 and will operate during each such time period without error
relating to date data, specifically including any error relating to, or the product of, date data which repre­sents or references different centuries or more than one century.

Tut Systems will, at its option, either repair or replace products that prove to be defective. For warranty
or repair, return this product to a service facility designated by reseller in accordance with reseller
instructions which such instructions shall be in accordance with those set forth in Tut Systems Standard
Terms and Conditions of Sale.

Limitations of Warranty

The foregoing warranty shall not apply to defects resulting from abuse, neglect by Buyer, improper
installation or application by Buyer, Buyer-supplied software or interfacing, unauthorized modification
or misuse, operation outside of the environmental specifications for the product, acts of God, or improp­er site preparation or maintenance.

Note: No other warranty is expressed or implied by statute or otherwise, regarding the product
including their fitness for any purpose, their quality, their merchantability, non-infringement or oth­erwise.

Exclusive Remedies

The remedies provided herein are the buyer’s sole and exclusive remedies. Tut Systems shall not
be liable for any direct, indirect, special, incidental, or consequential damages, whether based
upon contract, tort, or any other legal theory. Warranties apply only to original purchaser or end­user and cannot be assigned or transferred to subsequent parties. Tut Systems Standard Terms
and Conditions of Sale contain the full text of the product limited warranty.

Assistance

For assistance, contact your nearest Tut Systems Sales and Service office.

FCC Radio Frequency Interference Statement

This equipment has been tested and found to comply with the limits for a computing device, pursuant to
Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful inter­ference when the equipment is operated in a commercial environment. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that interfer­ence will not occur in a particular installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and receiver.

3. The equipment and the receiver should be connected to outlets on separate circuits.

4. Consult the dealer or an experienced radio/television technician for help.

TUT SYSTEMS i

XL-12000S

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

Changes or modifications not expressly approved by the party responsible for compliance could void the
user’s authority to operate the equipment.

The information contained in this publication is the latest available. However, Tut Systems reserves the
right to change specifications of hardware and software without prior notice. Purchasers of Tut Systems’
products should make their own evaluation to determine the suitability of each product for their specific
application. Tut Systems’obligations regarding the use or application of its products shall be limited to
those commitments to the purchaser set forth in its Standard Terms and Conditions of Sale for a deliv­ered product.

Published by Tut Systems, Inc.
2495 Estand Way
Pleasant Hill, CA 94523-3911
925-682-6510
fax [phone]
www.tutsys.com

Copyright © 1998 by Tut Systems, Inc. All rights reserved.
No part of the contents of this manual may be reproduced or transmitted in any form or by any person
without written permission from the publisher.

Printed in the United States of America.

Tut Systems Manual P/N 220-03141-10 111298

ii TUT SYSTEMS

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

Go to Figures and Tables

XL-12000S

Table of Contents

1.0 XL-12000S Product Overview 1

2.0 Technical Specifications 2

3.0 What’s in the Box 3

4.0 Installation 4

5.0 Panel Indicators and Connectors 7

5.1 Front Panel Indicators 7

5.2 Rear Panel Indicators and Connectors 9

6.0 Power and Boot Up Sequence 10

7.0 Configure the Modem 11

7.1 Quick Start 11

7.2 Detailed Procedures 14

7.2.1 Choosing the Appropriate Bridging/Routing Option 14

7.2.2 User Interface Keyboard Commands 26

7.2.3 Procedures for Initial Configuration 28

7.2.3.1 HyperTerminal 28

7.2.3.2 Login Display 30

7.2.3.3 Main Menu Display 32

7.2.3.4 Modem Management 32

7.2.3.5 Telnet Setup 35

7.2.3.6 Modem Configuration 35

7.2.3.7 Password 39

8.0 Advanced Modem Features 41

8.1 SNMP Management 41

8.2 Modem DHCP Relay Agent 43

8.3 Upgrade Software 44

9.0 Modem Statistics 48

9.1 Modem Status 48

9.2 Modem IP Packet Statistics 50

10.0 Troubleshooting 52

11.0 Technical Assistance and Customer Support 57
Appendix A: Pinout Assignments 58
Appendix B: Reference Screen Shots 59
Appendix C: Measuring Line Length 65
Appendix D: Subnet Mask Table 66

TUT SYSTEMS iii

XL-12000S

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MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

Figures

Figure 4.1 RJ-45 10Base-T Straight-through Cable 4
Figure 4.2 RJ-11 DSL Line Cable 5
Figure 4.3 XL-12000S Installation with a Hub or Node 6
Figure 5.1 XL-12000S Front Panel 8
Figure 5.2 XL-12000S Rear Panel 9
Figure 7.1 Serial Session/Version ID Screen 13
Figure 7.2 Bridging Example One (Basic Bridging) 15
Figure 7.3 Bridging Example Two (Advanced Bridging) 17
Figure 7.4 Routing Example One 20

(Using a Router and Bridge Combination)

Figure 7.5 Routing Example Two 22

(Using a Router and Router Combination)
Figure 7.6 Bridge Non-IP 24
Figure 7.7 Serial Session/Version ID Screen 30
Figure 7.8 Login Display Screen 31
Figure 7.9 Main Menu Screen 32
Figure 7.10 Modem Management Screen 33
Figure 7.11 Modem Configuration Screen 36
Figure 7.12 Password Change Screen 39
Figure 8.1 SNMP Management Screen 42
Figure 8.2 DHCP Relay Agent Screen 43
Figure 8.3 Upgrade Software Screen 46
Figure 9.1 Modem Status Screen 48
Figure 9.2 Modem IP Packet Statistics Screen 50
Figure C.1 Using an Ohmmeter to Measure the Length of Phone Wire 65

iv TUT SYSTEMS

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

XL-12000S

Tables

Table 7.1 Keyboard Commands 27
Table 7.2 Specific Field Information for the Modem 34

Management Screen
Table 7.3 Specific Field Information for the Modem Configuration Screen 37
Table 7.4 Specific Field Information for the Password Change Screen 40
Table 8.1 Specific Field Information for the SNMP Management Screen 42
Table 8.2 Specific Field Information for the DHCP Relay Agent Screen 44
Table 8.3 Specific Field Information for the Upgrade Software Screen 46
Table 9.1 Specific Field Information for the Modem Status Screen 49
Table 9.2 Specific Field Information for the Modem IP Packet 50

Statistics Screen
Table A.1 RJ-45 10Base-T Ethernet Connector on Rear of Modem 58
Table A.2 RJ-11 DSL Line Connector on Rear of Modem 58
Table D.1 Subnet Mask Tables 66

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MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

vi TUT SYSTEMS

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

1.0 XL-12000S Product Overview

The XL-12000S modem is a high-speed, SDSL (Symmetrical Digital
Subscriber Line) point-to-point managed modem created to extend
Local Area Networks (LANs) up to 12,000 feet using ordinary tele­phone wires. The modem uses Digital Subscriber Line (DSL) trans­mission technology to deliver data at 2 Mbps.

The XL-12000S is designed for easy installation. Front panel LEDs
provide status and operational information. The modem is ideally
suited for connecting LANs in a campus environment where LANs
may be spread out over two miles. The XL-12000S units function
as a pair; one as Master and the other as Slave. Once the modem is
installed and configured, the user may continue to use the serial
Console port, open a Telnet session, or use SNMP to configure
further changes such as bridging or routing.

XL-12000S

1.0 XL-12000S PRODUCT OVERVIEW TUT SYSTEMS 1

XL-12000S

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MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

2.0 Technical Specifications

Data Rate: 2.048 Mbps

Line Length: Up to 12,000 ft. on 24 AWG wire

Up to 9,000 ft. on 26 AWG wire

Ethernet Interface: Compliant with IEEE 802.3 10Base-T

Console Interface: RS-232

Operating Voltage: 120/240 VAC 50/60 Hz

wall transformer

Power Consumption: 5 Watts

Operating Temperature: -5˚ to 55˚ C

Storage Temperature: -40˚ to +70˚ C

Relative Humidity: 5% to 90% (non-condensing)

Compliance: UL, CSA, CE, FCC Part 15 Class A

Software: • SNMPv1 agent supports rfc-1213,

2 TUT SYSTEMS 2.0 TECHNICAL SPECIFICATIONS

rfc-1493, and Tut Enterprise MIB

• Telnet

• Spanning Tree Protocol (STP)
Bridging

• Static Routing

• DHCP Relay Agent

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

3.0 What’s in the Box

Confirm that there is one each of the following items:

Description

• XL-12000S Modem

• XL-12000S User Manual

• RJ-45 10Base-T Straight-through Cable

• RJ-11 DSLLine Cable

• Wall Transformer w/Lightning Protection

• XL-12000S Enterprise SNMP MIB Diskette
You will also need a PC with a serial port and a serial cable to

connect to the modem’s point of connection, which is an RS-232
Console port (DB-9 female).

XL-12000S

3.0 WHAT’S IN THE BOX TUT SYSTEMS 3

XL-12000S

1

8

1

2

3

6

1

2

3

6

8

1

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MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

4.0 Installation

1. Remove the modem and wall transformer from the shipping car-

ton. Remove the wall transformer from its box. Remove the
plastic wrapper from around the modem.

a. Remove the cable ties from each of the cables and place

them side by side.

b. Each of the cables is identified as follows:

(1) RJ-45 10Base-T straight-through cable: Acable with

RJ-45 connectors is used to connect the modem to a
10Base-T hub or node. If connecting to a node (PC,
server or workstation), the switch on the back of the
modem will allow this cable to be used like a cross­over cable (Figure 4.1).

Figure 4.1. RJ-45 10Base-T Straight-through Cable

(2) RJ-11 DSL Line cable: Acable with RJ-11 connectors

at each end. RJ-11 connectors have four contacts and
are smaller than the RJ-45 connectors, which have eight
contacts. The diameter of the RJ-11 cable is smaller
than the RJ-45 cable. This cable is used to connect the
modem to the telephone jack (Figure 4.2).

4 TUT SYSTEMS 4.0 INSTALLATION

Note: RJ-11 cables generally have four contacts and six pinout
positions. The pinout assignments for the RJ-11 and RJ-45
connectors are provided in Appendix A.

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

2

5

3

4

3

4

5

2

Figure 4.2 RJ-11 DSL Line Cable

XL-12000S

2. Select a convenient location near the Ethernet device to which

the modem will be connected. The modem should be kept away
from excessive heat or cold. Operating temperature range is

-5˚C to 55˚C.

3. Connect an RJ-45 straight-through cable from the 10Base-T

Ethernet connector of the XL-12000S to an Ethernet device
(PC, server, workstation or hub) as shown in Figure 4.3. If
connecting to a PC, server, or workstation, set the Ethernet
connection switch on the back of the modem to the “Crossed”
position. If connecting to a 10Base-T hub, set the switch to
“Normal”.

4. Connect the RJ-11 DSL Line cable from the DSL connector on

the modem to the telephone jack as shown in Figure 4.3.
Verify that you have a telephone line linking the two XL-12000S

modems. Verify that this line has no bridge taps and is generally
free of noise.

5. Connect the wall transformer as shown in Figure 4.3.

6. Remove the SNMP/MIB floppy disk and set aside.

4.0 INSTALLATION TUT SYSTEMS 5

XL-12000S

10Base-T

Cable

Switch in Normal

(Hub) Position

RJ-11

RJ-45

10BASE-T

ETHERNET

10BASE-T

LINK

CONSOLE

12VDC

-

+

RS-232

DSL

ETH

ERN

ET

C

O

N

N

EC

TIO

N

NORMAL

C

O

N

N

EC

T

T

O

H

U

B

CROSSED

C

O

N

N

EC

T

T

O

N

O

D

E

XL-12000S

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MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

Figure 4.3 XL-12000S Installation with a Hub or Node.

Note: The Ethernet connection switch facilitates use with either a hub or node.

6 TUT SYSTEMS 4.0 INSTALLATION

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

XL-12000S

5.0 Panel Indicators and Connectors

This section describes the indicators and connectors on the front and
rear of the XL-12000S modem.

5.1 Front Panel Indicators

Figure 5.1 shows the LED indicators that provide status and opera­tional information on the XL-12000S Modem.

Power LED

The blue Power LED remains lit while the unit has power.

Activity LEDs

The DSL RX and DSL TX LEDs flash green when receiving and
transmitting data.

Status LED

At power up, the Status LED flashes red while the modem performs
a diagnostic self-test and performs software decompression. After the
modem completes its self-test, the LED will extinguish, indicating
that the modem is ready for normal operations.

The Status LED will flash red when software is being downloaded
during subsequent maintenance activity. Steady red indicates unit
failure; refer to the “Troubleshooting” section of this manual.

DSL Link

A flashing DSL link LED indicates that the modem is in the process
of linking to the other modem. After the two XL-12000S units have
secured the DSL link, the DSL Link LED glows a steady green. The
LED is off when there is no link. If the link remains off, refer to the
“Troubleshooting” section of this manual (section 10.0).

5.0 PANEL INDICTORS AND CONNECTORS TUT SYSTEMS 7

XL-12000S

XL-12000S HIGH SPEED L AN MODEM

POWER

DSL RX

DSL TX

STATUS

DSL LINK

DSL RX

Flashing Green

: On when receiving data.

DSL LINK

Steady Green

: Normal link.

Flashing Green

: Linking (about one minute).

Off

: No link.

STATUS

Flashing Red

:
Power up self-test or software
download in progress.

Off

: Normal condition.

Steady Red

: Board failure.

Contact Tut Systems Customer Support.

DSL TX

Flashing Green

: On when transmitting data.

POWER

Blue

TUT SYSTEMS

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MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

Figure 5.1 XL-12000S Front Panel

8 TUT SYSTEMS 5.0 PANEL INDICATORS AND CONNECTORS

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

Power Connection 10Base-T

Link

Green

:
Indicates valid
10Base-T link.

Flashing Green

:

Indicates activity.

Off

: No link.

10Base-T
Ethernet Connection

To connect to a PC, server,
workstation, or hub.

DSL Connector

To the telephone
line for the remote
modem.

Ethernet
Connection

Normal

:
Select Normal if
connecting to a
hub.

Crossed:

Select Crossed if
connecting to a
node (PC, server,
or workstation).

Console Port
(RS-232 Connection)

To connect to computer
for management session.

XL-12000S

CONSOLE

RS-232 RJ-45 RJ-11

10BASE-T

LINK

10BASE-T

ETHERNET

ETHERNET

CONNECTION

NORMAL

CONNECT

TO HUB

CROSSED

CONNECT

TO NODE

DSL

12VDC

-

+

XL-12000S

5.2 Rear Panel Indicators and Connectors

10Base-T Link LED

A green LED indicates a valid Ethernet link. When flashing, the
LED indicates traffic on the link. When the LED is off, there is no
valid link. If this occurs, see section 10.0, “Troubleshooting”.

Console Port

The console port (RS-232) connects to a PC with a VT-100 terminal
or PC VT-100 emulator for opening a management session.

Figure 5.2 XL-12000S Rear Panel

5.0 PANEL INDICATORS AND CONNECTORS TUT SYSTEMS 9

XL-12000S

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MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

6.0 Power and Boot Up Sequence

1. Verify that the LAN and DSL lines are connected according to

the wiring diagram described in the “Installation” section (see
Figure 4.1 or Figure 4.2).

2. Plug the 120 VAC/12 VDC wall transformer (220VAC for inter-

national use) into a wall outlet. Verify that the Power (blue)
LED comes on.

3. Verify that the 10Base-T Link (green) LED on the rear panel is

illuminated. If the unit is not connected to an Ethernet (10Base-T)
source (e.g., computer), this LED will illuminate momentarily
on power-up and then extinguish. When properly connected,
the 10Base-T Link LED will be lit continuously and flash to
indicate traffic.

4. Immediately upon power-up, the modem will begin its boot-up

routine. The Status LED flashes red as the modem cycles
through its initialization process. After initialization, the red
Status LED will extinguish. If the light is steady red, refer to
section 10.0, “Troubleshooting”.

5. The modem is now ready for initial configuration.

10 TUT SYSTEMS 6.0 POWER AND BOOT UP SEQUENCE

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

7.0 Configure the Modem

This section provides two options for performing modem configura­tion. The “Quick Start” (section 7.1) option provides a basic
Spanning Tree Protocol (STP) enabled bridge mode configuration
with no remote management or password protection. The “Detailed
Procedures” section (section 7.2) provides detailed steps covering all
modes of modem operation. Before beginning either option, make
sure the power and boot up sequence was successful.

This section assumes you have directly connected (with a user-pro­vided straight-through serial cable), a PC to the XL-12000S console
port via the serial port on the PC and are running either Windows
NT 3.5 or greater, Windows 95, or Windows 98.

7.1 Quick Start

The “Quick Start” option, which only requires configuring the
modem which will be used as the master unit, takes advantage of the
default configuration programmed into the XL-12000S. The default
settings provide the following functionality:

XL-12000S

• Bridge Mode: The XL-12000S will function as a bridge con­necting two independent segments. This mode allows the
modem to pass both IP and non-IP packets transparently making
the segments a single network. Examples of non-IP packets
include Novell’s IPXTMand Apple’s AppleTalkTM.

• Master/Slave: The default setting is Slave mode.

The only configuration change needed will be to change the
Master/Slave mode to Master on one modem.

Initial configuration must be done from the serial console port.
Therefore, it is necessary to configure the PC to be used to perform
the initial configuration steps.

1. Configuring the Windows terminal emulation program

HyperTerminal on the designated PC:

7.0 CONFIGURE THE MODEM TUT SYSTEMS 11

XL-12000S

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a. From the Windows 95/Windows 98 screen select “Start.”
b. Select “Programs” (or Open file Hypertrm.exe).
c. Select “Accessories.”
d. Select “HyperTerminal.” When the HyperTerminal icon

appears, double-click on it.

e. On the Connection Description icon, assign a name (e.g.

Modem1) to the icon for future purposes. Press “OK”.
(When Phone Number tab appears, press “Cancel”.)

f. Select File / Properties: Press the <Configure> button on

the Properties screen.

g. Select the COM port (e.g. COM1) number that you will be

connecting to and set the following parameters:

• 9,600 baud

• No-parity

• 8 data bits

• 1 stop bit

• None
Press “OK”.

h. Under the File / Properties/ Settings: Set Function, Arrow,

and Ctrl keys to act as Terminal Keys, Emulation - Auto
detect. Backscroll buffer lines - 500. Press “OK”.

i. Set hardware flow control to none. You can set the display

window to full screen size to avoid cutting off a section of
the display.

j. Do a File/Save As with a meaningful file name to save this

configuration if you intend to use this PC and serial connec­tion in the future.

k. Connect the user-provided straight-through serial cable to

locally connect your PC to the modem (see section 4.0
Installation for more information).

12 TUT SYSTEMS 7.0 CONFIGURE THE MODEM

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

XL-12000S

1. Go to the Call menu and select connect. You will see the
Serial Session/Version ID screen (Figure 7.1).

m. To verify that you have correctly configured your PC’s

serial port, press the <Enter> key and the XL-12000S
Login Display screen (Figure 7.8) should appear.

n. If your terminal remains blank, press <Ctrl-X> and enter

again. If it is still blank, make sure you have entered the
correct settings in step seven above. Verify that you are
using the correct cable and have a good connection. If you
are still unable to view the Login Display screen, refer to
section 10.0, “Troubleshooting”.

Figure 7.1 Serial Session/Version ID Screen

2. When Login is displayed press <Enter>. Ignore the request for

a password. (Screen shots for this process are contained in sec­tion 7.8 and Appendix B)

3. In the Main Menu, select “C”.

4. In modem configuration change “Slave” to “Master” by typing

“M” in the Master/Slave field to designate this modem as the
Master. Press <Enter> and this modem is now the Master.

7.0 CONFIGURE THE MODEM TUT SYSTEMS 13

XL-12000S

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5. The XL-12000S units are now configured and the front panel

indicators for the DSL link LED should start blinking as soon as
the Master and Slave DSL ports are connected. If the DSL link
LED does not blink, see the “Troubleshooting” section.

6. When link LEDs are solid green (after several minutes) the pair

of modems are operational in bridging mode.

7.2 Detailed Procedures

If the “Quick Start” configuration is not sufficient for your use, this
section provides details on how to configure the XL-12000S to meet
your needs. First decide whether to use each of the XL-12000S units
in the pair as a bridge or a router. There are four bridging/routing
options. In many cases networking needs can be met with basic bridg­ing. This is option one. Some of the more complex network configu­rations require options two through four. Other parts of this section
describe how to configure and manage the modem. After configuring
your XL-12000S modems you will want to secure it with a password.
Password protection is described later in section 7.2.3.7.

7.2.1 Choosing the Appropriate Bridging/
Routing Option

There are four routing and bridging options:

• Basic Bridging

• IP Routing Only

• Bridge Non-IP

• Block Packets
Illustrated over the next few pages are two bridging configurations,

two routing configurations, one bridging non-IP configuration, and
an explanation of the Block Packets option.

Note: IP addresses are used only as examples in the illustrations.

14 TUT SYSTEMS 7.0 CONFIGURE THE MODEM

MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

192.168.3.5

192.168.3.3
(LAN)

192.168.3.2

(LAN)

Modem 1

TUT SYSTEMS

Administration Building

192.168.3.1

Database Server

Modem 2

TUT SYSTEMS

Campus Data Center

XL-12000S

The network design and table entries should be planned prior to fill­ing out the static routing tables on the Modem Configuration screen.
Routing table entries are also required for the gateway router and for
the other routers reachable through the XL-12000S.

1. Basic Bridging

In the bridge mode, the XL-12000S modem functions as a bridge
connecting two parts of the same network. This selection allows the
modem to pass both IP and non-IP packets. Examples of non-IP
include Novell’s IPXTMand Apple’s AppleTalkTM.

Bridging Example One (Basic Bridging):

This example shows how the XL-12000S connects two LANs in sep­arate buildings. Two types of data traffic will be sent between LANs:

• Broadcast packets, which are packets sent to all LAN devices.

• Direct packets, which are sent to one or several LAN devices.
Direct packets will only cross the DSL link if the recipient is on
a different LAN segment from the sender. Spanning Tree
Protocol (STP) may be on or off in this example.

Figure 7.2 Bridging Example One (Basic Bridging)

7.0 CONFIGURE THE MODEM TUT SYSTEMS 15

XL-12000S

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MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE

The configuration for the modems used in “Bridging Example One
(Basic Bridging)”:

LAN IP addresses are shown in Figure 7.2 although this option does
not require you to enter new LAN IP addresses :

Note: If all administration and configuration of the modems is to be done via
the serial Console, as opposed to Telnet and SNMP sessions, no IP, mask, or
default gateway addresses need to be assigned to the modems.

For Modem 1:

The “LAN IP address” field in the Modem Management screen will
be set to 192.168.3.3

The “Subnet Mask” field in the Modem Management screen will be
set to 255.255.255.0

The “Default Gateway” field will be set to a valid default gateway.
The “Master/Slave” mode in the Modem Configuration screen is set

to Master.
The “Routing/Bridging” field in the Modem Configuration screen

will be set to bridging.

For Modem 2:

The “LAN IP address” field in the Modem Management screen will
be set to 192.168.3.2

The “Subnet Mask” field in the Modem Management screen will be
set to 255.255.255.0

The “Default Gateway” field will be set to a valid default gateway.
The “Master/Slave” mode in the Modem Configuration screen is set

to Slave.
The “Routing/Bridging” field in the Modem Configuration screen

will be set to bridging.
In order to Telnet or use SNMP to these modems, use the LAN inter-

faces. So, for example, the PC located in the Administration Building
will be able to Telnet to Modem 2’s LAN interface. Likewise, the
Database Server will be able to Telnet to Modem 1.

16 TUT SYSTEMS 7.0 CONFIGURE THE MODEM