NETGEAR RH340 - ISDN INET Gateway Router User manual

M-RH340NA-0
September 1999
NETGEAR, Inc.
A Bay Networks Company
4401 Great America Parkway
Santa Clara, CA 95054 USA
Phone 888-NETGEAR
Reference Guide for the
Model RH340 Internet
Access ISDN Router

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© 1999 by NETGEAR, Inc. All rights reserved.
Trademarks
Bay Networks is a registered trademark of Bay Networks, Inc.
NETGEAR and FirstGear are trademarks Bay Networks, Inc.
Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation.
Other brand and product names are registered trademarks or trademarks of their respective holders.
Statement of Conditions
In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to
make changes to the products described in this document without notice.
NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit
layout(s) described herein.
Federal Communications Commission (FCC) Compliance Notice: Radio Frequency Notice
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
• This device may not cause harmful interference.
• This device must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. 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 occurin a particular installation. If this equipment does cause harmfulinterference 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:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
EN 55 022 Declaration of Conformance
This is to certify that the Model RH340 Internet Access ISDN Router is shielded against the generation of radio
interference in accordance with the application of Council Directive 89/336/EEC, Article 4a. Conformity is declared by
the application of EN 55 022 Class B (CISPR 22).

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Bestätigung des Herstellers/Importeurs
Es wird hiermit bestätigt, daß das Model RH340 Internet Access ISDN Router gemäß der im BMPT-AmtsblVfg 243/
1991 und Vfg 46/1992 aufgeführten Bestimmungen entstört ist. Das vorschriftsmäßige Betreiben einiger Geräte (z.B.
Testsender) kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die Anmerkungen in der
Betriebsanleitung.
Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt
gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.
Certificate of the Manufacturer/Importer
It is hereby certified that the Model RH340 Internet Access ISDN Router has been suppressed in accordance with the
conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example,
test transmitters) in accordance with the regulations may, however, be subject to certain restrictions. Please refer to the
notes in the operating instructions.
Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market
and has been granted the right to test the series for compliance with the regulations.
VCCI-2 Statement
This equipment is in the 2nd Class category (information equipment to be used in a residential area or an adjacent area
thereto) and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing
Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas.
When used near a radio or TV receiver, it may become the cause of radio interference.
Read instructions for correct handling.
Customer Support
For assistance with installing and configuring your NETGEAR system or with post-installation questions or problems,
contact your point of purchase representative.
If you experience difficulties with your Model RH340 router, refer to the Troubleshooting section of this manual.
Additional troubleshooting tips are available on the NETGEAR World Wide Web home page. Basic support is also
provided by NETGEAR. Refer to the Support Information Card that was included with your router for the customer
support phone number in your country. When calling, please have your configuration information ready.
World Wide Web
NETGEAR maintains a World Wide Web home page that you can access at the universal resource locator (URL)
http://www.NETGEARinc.com. A direct connection to the Internet and a Web browser such as Internet Explorer
or Netscape are required.

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Contents v
Contents
Preface
Purpose ...........................................................................................................................xiii
Audience ..........................................................................................................................xiii
Conventions .....................................................................................................................xiv
Special Message Formats .........................................................................................xiv
Use of Enter, Type, Press, and Click .........................................................................xiv
Other Conventions .................................................................................................... xv
Related Publications ........................................................................................................xv
Chapter 1
Introduction
About the Router ............................................................................................................1-1
Features ..........................................................................................................................1-1
Key Features ............................................................................................................1-2
ISDN Support ...........................................................................................................1-3
Multilink PPP Support ..............................................................................................1-3
TCP/IP Support ........................................................................................................1-3
IP Address Masquerading by Dynamic NAT+ ....................................................1-3
Automatic Configuration of Attached PCs by DHCP .........................................1-4
DNS Proxy .........................................................................................................1-4
Port Forwarding with NAT ..................................................................................1-4
Management Support ..............................................................................................1-4
Getting Started ...............................................................................................................1-4

vi Contents
Chapter 2
Hardware Installation
Package Contents ..........................................................................................................2-1
Local Network Hardware Checklist .................................................................................2-2
Router Connection ..........................................................................................................2-2
Installing the Model RH340 Router ..........................................................................2-5
Connecting the Serial Cable (Optional) ....................................................................2-6
Connecting to the ISDN Port ....................................................................................2-6
Connecting the Ethernet Cable ................................................................................2-6
Connecting a Telephone, Fax, or Modem ................................................................2-6
Connecting the Power Adapter ................................................................................2-6
Chapter 3
Preparing Your Network
ISDN Services Checklist .................................................................................................3-1
Local Network Software Checklist ..................................................................................3-2
Configuring Windows 95 or Windows 98 for IP Networking .....................................3-3
Configuring TCP/IP Properties .................................................................................3-5
Verifying TCP/IP Properties .....................................................................................3-5
ISP Checklist ..................................................................................................................3-6
Chapter 4
Configuring the Router Using FirstGear
Overview of FirstGear Configuration Wizard ..................................................................4-1
Installation of FirstGear Configuration Wizard ................................................................4-2
Launching FirstGear .......................................................................................................4-3
ISDN Line Information ..............................................................................................4-4
ISDN Test .................................................................................................................4-6
ISP Information ........................................................................................................4-8
ISP Test ..................................................................................................................4-10
Configuration Complete .........................................................................................4-12
Accessing the Internet ...........................................................................................4-13

Contents vii
Chapter 5
Advanced Configuration
Advanced Options Menu ................................................................................................5-2
DNS Server Address ................................................................................................5-2
Local Server .............................................................................................................5-3
Local Web Server Example ...............................................................................5-4
Local Game Host or Videoconference Example ................................................5-4
Multilink Protocol ......................................................................................................5-4
Idle Timeout .............................................................................................................5-5
Data Over Voice Bearer Service ..............................................................................5-5
Chapter 6
Troubleshooting
Basic Functioning ...........................................................................................................6-1
LEDS ........................................................................................................................6-1
Test LED ...................................................................................................................6-2
LAN Link LED ...........................................................................................................6-2
Troubleshooting the ISDN Line .......................................................................................6-2
Troubleshooting a TCP/IP Network Using a Ping Utility .................................................6-3
Testing the LAN Path to Your Router ........................................................................6-3
Testing the Path from Your PC to the Internet ..........................................................6-4
Troubleshooting an ISP Connection ...............................................................................6-5
Troubleshooting Multilink Connections ...........................................................................6-7
Troubleshooting Internet Applications .............................................................................6-8
Testing the Phone Ports .................................................................................................6-9
Restoring the Factory Default Configuration and Password ...........................................6-9
Internal Manager Interface ...........................................................................................6-10
Password Information .............................................................................................6-11

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Chapter 7
Basic Routing Information
Basic Router Concepts ...................................................................................................7-1
What is a Router? ....................................................................................................7-1
IP Addresses and the Internet .................................................................................7-2
Netmask ...................................................................................................................7-4
Subnet Addressing ...................................................................................................7-4
Private IP Addresses ................................................................................................7-7
Single IP Address Operation Using NAT ..................................................................7-7
Domain Name Server ...............................................................................................7-9
IP Configuration by DHCP .......................................................................................7-9
Appendix A
Technical Specification
General Specifications ................................................................................................... A-1
Appendix B
Ordering ISDN Lines
Ordering the Line ........................................................................................................... B-1
Provisioning for Switches in North America ...................................................................B-2
Provisioning for Nortel Networks Switch ................................................................. B-3
Provisioning for AT&T 5ESS Switch ........................................................................ B-5
Glossary
Index

Figures ix
Figures
Figure 2-1. Front Panel of the Model RH340 Router ..................................................2-2
Figure 2-2. Rear Panel of the Model RH340 Router ..................................................2-4
Figure 2-3. Installing the Model RH340 Router ..........................................................2-5
Figure 3-1. Components for IP Networking Window ..................................................3-4
Figure 4-1. Configuration Wizard ISDN Line Information Window .............................4-4
Figure 4-2. Configuration Wizard ISDN Test Window ................................................4-6
Figure 4-3. Configuration Wizard ISP Information Window ........................................4-8
Figure 4-4. Configuration Wizard ISP Test Window .................................................4-10
Figure 4-5. Configuration Wizard Complete Window ...............................................4-12
Figure 5-1. ISDN Advanced Options Window ............................................................5-2
Figure 6-1. Trace Display for a Successful TCP/IP Protocol Connection ...................6-5
Figure 6-2. Trace Display for a Successful Multilink Connection ................................6-7
Figure 7-1. Three Main Address Classes ...................................................................7-3
Figure 7-2. Example of Subnetting a Class B Address ..............................................7-5
Figure 7-3. Single IP Address Operation Using NAT ..................................................7-8

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