Netopia R2121 User Manual

Netopia® R2121 Dual Analog Router

User’s Reference Guide

Copyright 1998, Netopia, Inc. v.1298 All rights reserved. Printed in the U.S.A. This manual and any associated artwork, software and product designs are copyrighted with all rights reserved. Under the copyright laws such materials may not be copied, in whole or part, without the prior written consent of Netopia, Inc. Under the law, copying includes translation to another language or format.

Netopia, Inc. 2470 Mariner Square Loop Alameda, CA 94501-1010 U.S.A.

Patents

PhoneNET technology contained in Netopia is covered by U.S. Patent Numbers 4,901,342 and 5,003,579. Other U.S. and foreign patents are pending.

Part Number

For additional copies of this electronic manual, order Netopia part number 6120328-PF-02

Printed copies

For printed copies of this manual, order Netopia part number TER2121/Doc (P/N 6120328-00-02)

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Welcome to the Netopia R2121 source for information about your Netopia R2121 Dual Analog Router. It is intended to be viewed on-line, using the powerful features of the Adobe Acrobat Reader. The information display has been deliberately designed to present the maximum information in the minimum space on your screen. You can keep this document open while you perform any of the procedures described, and ﬁnd useful information about the procedure you are performing.

This Table of Contents page you are viewing consists of hypertext links to the chapters and headings listed. If you are viewing this on-line, just click any link below to go to that heading.

User’s Reference Guide

Conﬁguration options for your Netopia R2121 Dual Analog Router..1

1. Small Ofﬁce connection to the Internet........................... 2

2. Small Ofﬁce connection to the Internet........................... 3

3. Direct Connection to a Corporate Ofﬁce (Telecommuter) .. 4

4. Conﬁgured to accept incoming dial-up connections.......... 5

5. Conﬁgured for two onboard and one external modem on the

Auxiliary port................................................................ 6

. This guide is designed to be your single

Part I: Getting Started

Chapter 1 — Introduction..........................................................1-1

Overview....................................................................... 1-1

Features and capabilities ............................................... 1-1

How to use this guide .................................................... 1-2

G B

Chapter 2 — Making the Physical Connections..........................2-1

Find a location............................................................... 2-1

What you need .............................................................. 2-1

Identify the connectors and attach the cables.................. 2-2

Netopia R2121 Dual Analog Router Back Panel Ports....... 2-4

Netopia R2121 Dual Analog Router Status Lights ............ 2-6

Chapter 3 — Setting up your Router with the SmartStart Wizard 3-1

Before running SmartStart ............................................. 3-1

Setting up your Router with the SmartStart Wizard........... 3-3

SmartStart Wizard conﬁguration screens ............... 3-3

Easy option.......................................................... 3-4

Advanced option .................................................. 3-8

Sharing the Connection.................................................. 3-9

ii User’s Reference Guide

Conﬁguring TCP/IP on Windows 95, 98, or NT

computers........................................................... 3-9

Conﬁguring TCP/IP on Macintosh computers........ 3-13

Chapter 4 — Monitoring with SmartView...................................4-1

SmartView overview ...................................................... 4-1

Navigating SmartView .................................................... 4-2

General Machine Information page ........................ 4-2

Connection Proﬁles page ...................................... 4-3

Event History pages ............................................. 4-3

Standard HTML Web-based monitoring pages......... 4-5

Chapter 5 — Connecting Your Local Area Network.....................5-1

Overview....................................................................... 5-1

Readying computers on your local network....................... 5-1

Connecting to an Ethernet network.................................. 5-3

10Base-T............................................................. 5-4

Adding a third modem.................................................... 5-5

Connecting to a LocalTalk network ................................. 5-6

Wiring guidelines for PhoneNET cabling.................. 5-7

Part II: Advanced Configuration

Chapter 6 — Console-based Management..................................6-1

Connecting through a Telnet session............................... 6-2

Conﬁguring Telnet software ................................... 6-3

Connecting a local terminal console cable to your router... 6-3

Navigating through the console screens .......................... 6-4

Chapter 7 — Easy Setup...........................................................7-1

Easy Setup console screens ................................. 7-1

How to access the Easy Setup console screens ..... 7-1

Beginning Easy Setup..................................................... 7-3

Easy Setup proﬁle................................................ 7-3

IP Easy Setup ...................................................... 7-4

Contents iii

Easy Setup Security.............................................. 7-6

Chapter 8 — WAN and System Conﬁguration .............................8-1

Creating a new Connection Proﬁle................................... 8-2

Viewing or editing connection proﬁles .................... 8-6

Deleting connection proﬁles.................................. 8-7

System Conﬁguration screens ........................................ 8-8

Navigating through the System Conﬁguration screens....... 8-8

System Conﬁguration features........................................ 8-9

Network Protocols Setup..................................... 8-11

Filter Sets (Firewalls).......................................... 8-11

IP Address Serving............................................. 8-11

Date and Time................................................... 8-11

Console Conﬁguration......................................... 8-12

SNMP (Simple Network Management Protocol)..... 8-13

Security............................................................. 8-13

Upgrade Feature Set .......................................... 8-13

Logging ............................................................. 8-13

Installing the Syslog client .................................. 8-14

Chapter 9 — Managing Voice and Data Calls .............................9-1

Specifying telephone connections ................................... 9-2

Default Answer Proﬁle for Dial-in Connections .................. 9-4

How the Default Answer Proﬁle works.................... 9-4

Scheduled connections.................................................. 9-7

Cost control feature -- call accounting............................ 9-12

Viewing call accounting statistics ........................ 9-14

Chapter 10 — IP Setup, SmartIP and Network Address

Translation........................................................10-1

Network Address Translation features ........................... 10-1

Using Network Address Translation............................... 10-3

Associating port numbers to nodes..................... 10-5

Using multiple Connection Proﬁles....................... 10-5

iv User’s Reference Guide

Network Address Translation guidelines............... 10-5

IP setup...................................................................... 10-6

IP subnets....................................................... 10-10

Static routes.................................................... 10-12

IP address serving..................................................... 10-16

DHCP NetBIOS Options..................................... 10-18

MacIP (Kip Forwarding) Options......................... 10-21

Chapter 11 — IPX Setup.........................................................11-1

IPX Features................................................................ 11-1

IPX Deﬁnitions............................................................. 11-1

Internetwork Packet Exchange (IPX) ..................... 11-1

IPX address....................................................... 11-2

Socket .............................................................. 11-2

Routing Information Protocol (RIP) ....................... 11-2

Service Advertising Protocol (SAP)....................... 11-2

NetBIOS............................................................ 11-3

IPX Spooﬁng ...................................................... 11-3

IPX setup........................................................... 11-3

IPX in the answer proﬁle ..................................... 11-5

IPX routing tables ........................................................ 11-7

Chapter 12 — AppleTalk Setup................................................12-1

AppleTalk networks ...................................................... 12-1

AppleTalk protocol.............................................. 12-1

MacIP................................................................ 12-3

AURP................................................................. 12-3

Routers and seeding .......................................... 12-3

Installing AppleTalk ...................................................... 12-4

Conﬁguring AppleTalk ................................................... 12-6

EtherTalk Setup.................................................. 12-6

LocalTalk Setup ................................................. 12-7

AURP setup ....................................................... 12-8

Contents v

Chapter 13 — Monitoring Tools...............................................13-1

Quick View status overview .......................................... 13-1

General Status................................................... 13-2

Current Status ................................................... 13-3

Status lights..................................................... 13-3

Statistics & Logs......................................................... 13-4

General Statistics .............................................. 13-4

Event Histories............................................................ 13-5

Routing Tables............................................................. 13-8

Served IP Addresses.................................................. 13-11

System Information.................................................... 13-13

SNMP....................................................................... 13-13

The SNMP Setup screen................................... 13-14

SNMP traps..................................................... 13-15

Chapter 14 — Security ...........................................................14-1

Suggested security measures....................................... 14-1

User accounts............................................................. 14-2

Dial-in Console Access................................................. 14-3

Enable SmartStart/SmartView/Web Server................... 14-4

Telnet access .............................................................. 14-4

About ﬁlters and ﬁlter sets ........................................... 14-4

What’s a ﬁlter and what’s a ﬁlter set?.................. 14-4

How ﬁlter sets work............................................ 14-5

How individual ﬁlters work................................... 14-7

Design guidelines............................................. 14-11

Working with IP ﬁlters and ﬁlter sets............................ 14-12

Adding a ﬁlter set............................................. 14-13

Viewing ﬁlter sets............................................. 14-17

Modifying ﬁlter sets.......................................... 14-18

Deleting a ﬁlter set........................................... 14-18

A sample IP ﬁlter set........................................ 14-18

IPX ﬁlters .................................................................. 14-22

vi User’s Reference Guide

IPX packet ﬁlters.............................................. 14-23

IPX packet ﬁlter sets ........................................ 14-24

IPX SAP ﬁlters.................................................. 14-26

IPX SAP ﬁlter sets ............................................ 14-28

Firewall tutorial.......................................................... 14-30

General Firewall Terms ..................................... 14-30

Basic IP Packet Components............................. 14-30

Basic Protocol Types ........................................ 14-30

Firewall design rules......................................... 14-31

Filter Basics..................................................... 14-33

Example Filters ................................................ 14-34

Token Security Authentication ..................................... 14-37

Securing network environments......................... 14-37

Using the SecurID token card............................ 14-37

Security authentication components.................. 14-38

Conﬁguring for security authentication ............... 14-38

Connecting using security authentication ........... 14-39

Chapter 15 — Utilities and Diagnostics...................................15-1

Ping............................................................................ 15-2

Trace Route................................................................. 15-4

Telnet client................................................................. 15-5

Secure Authentication Monitor...................................... 15-6

Disconnect Telnet Console Session............................... 15-7

Factory defaults........................................................... 15-7

Transferring conﬁguration and ﬁrmware ﬁles with TFTP.... 15-7

Updating ﬁrmware .............................................. 15-8

Downloading conﬁguration ﬁles ........................... 15-9

Uploading conﬁguration ﬁles ............................. 15-10

Transferring conﬁguration and ﬁrmware ﬁles with

XMODEM................................................................... 15-10

Updating ﬁrmware ............................................ 15-11

Downloading conﬁguration ﬁles ......................... 15-12

Contents vii

Uploading conﬁguration ﬁles ............................. 15-12

Restarting the system................................................ 15-13

Part III: Appendixes

Appendix A — Troubleshooting..................................................A-1

Conﬁguration problems .................................................. A-1

SmartStart Troubleshooting.................................. A-2

Console connection problems ............................... A-2

Network problems................................................ A-2

Power outages............................................................... A-3

Technical support .......................................................... A-3

How to reach us................................................... A-3

Appendix B — Setting Up Internet Services...............................B-1

Finding an Internet service provider................................. B-1

Unique requirements............................................ B-2

Pricing and support.............................................. B-2

ISP’s Point of presence ........................................ B-2

Endorsements ..................................................... B-2

Deciding on an ISP account............................................ B-2

Setting up a Netopia R2121 account..................... B-2

Obtaining an IP host address ................................ B-2

SmartIP™............................................................ B-3

Obtaining information from the ISP.................................. B-3

Local LAN IP address information to obtain

(NAT enabled)...................................................... B-3

Local LAN IP address information to obtain

(NAT-disabled)...................................................... B-3

Appendix C — Understanding IP Addressing ..............................C-1

What is IP?.................................................................... C-1

About IP addressing....................................................... C-1

Subnets and subnet masks .................................. C-2

Example: Using subnets on a Class C IP internet.... C-3

viii User’s Reference Guide

Example: Working with a Class C subnet................ C-5

Distributing IP addresses ............................................... C-5

Technical note on subnet masking......................... C-6

Conﬁguration ....................................................... C-7

Manually distributing IP addresses ........................ C-8

Using address serving.......................................... C-8

Tips and rules for distributing IP addresses............ C-9

Nested IP subnets....................................................... C-11

Broadcasts.................................................................. C-13

Packet header types........................................... C-13

Appendix D — Understanding Netopia NAT Behavior...................D-1

Network Conﬁguration.................................................... D-1

Background................................................................... D-1

Exported services................................................ D-5

Important notes................................................... D-6

Conﬁguration................................................................. D-6

Summary...................................................................... D-8

Appendix E — Binary Conversion Table......................................E-1

Appendix F — Further Reading..................................................F-1

Appendix G — Technical Speciﬁcations and Safety Information ..G-1

Pinouts for Auxiliary Port Modem Cable........................... G-1

Description.................................................................... G-2

Power requirements ............................................. G-2

Environment ........................................................ G-2

Software and protocols......................................... G-3

Agency approvals........................................................... G-3

Regulatory notices ............................................... G-3

Important safety instructions ................................ G-5

Appendix H — About 56K Line Access.......................................H-1

Glossary..................................................................................GL-1

Contents ix

Index ..................................................................................Index-1

Limited Warranty and Limitation of Remedies................................1

x User’s Reference Guide

Conﬁguration options for your Netopia R2121 Dual Analog

Router

The Netopia R2121 can be used in different ways depending on your needs. In general, you will probably want to use it in one or more of the following ways: (Click on one of these links)

■

“1. Small Ofﬁce connection to the Internet” with several computers in your ofﬁce sharing

a single IP address (Network Address Translation enabled)

■

“2. Small Ofﬁce connection to the Internet” with a block of IP addresses (Network

Address Translation disabled),

“3. Direct Connection to a Corporate Ofﬁce (Telecommuter)”

■

“4. Conﬁgured to accept incoming dial-up connections”

■

“5. Conﬁgured for two onboard and one external modem on the Auxiliary port”

This section is intended to give you a path to the appropriate installation and conﬁguration instructions based on your intended use for the Netopia R2121.

1. Small Ofﬁce connection to the Internet

For Small Ofﬁce connections to the Internet, using a single dynamic IP address with Network Address Translation (NAT) enabled, you should use the following conﬁguration option:

■ the SmartStart™ Wizard, included on your Netopia R2121 CD.

This is the fastest and simplest way to get you up and running with the minimum difﬁculty.

For instructions on this option, see “Setting up your Router with the SmartStart Wizard”

on page 3-3.

2. Small Ofﬁce connection to the Internet

For Small Ofﬁce connections to the Internet, using a block of IP addresses (Network Address Translation disabled), you should use the following conﬁguration tool:

■ Easy Setup conﬁguration using console-based management. This option allows maximum

ﬂexibility for experienced users and administrators. For instructions on this option, see “Console-based Management” on page 6-1 and

“Easy Setup” on page 7-1.

3. Direct Connection to a Corporate Ofﬁce (Telecommuter)

For direct connections to a Corporate Ofﬁce, you can use either one of two conﬁguration options:

■ If you will be using Network Address Translation, use the SmartStart™ Wizard, included

on your Netopia R2121 CD. For instructions on this option, see “Setting up your Router with the SmartStart Wizard”

on page 3-3.

■ If your corporate ofﬁce assigns you a static IP address, use Easy Setup under

console-based management. This option allows maximum ﬂexibility for experienced users and administrators.

For instructions on this option, see “Console-based Management” on page 6-1 and

“Easy Setup” on page 7-1.

4. Conﬁgured to accept incoming dial-up connections

To conﬁgure the Netopia R2121 to accept incoming dial-up connections, you should use the following conﬁguration method:

■ To create one or more dial-in Connection Proﬁles for each dial-in user, see “Creating a

new Connection Proﬁle” on page 8-2.

You do this using console-based management. For instructions on using console-based management, see “Console-based

Management” on page 6-1

For instructions on creating a Connection Proﬁle to dial out to an ISP or corporate site, see “Easy Setup” on page 7-1.

5. Conﬁgured for two onboard and one external modem on the Auxiliary port

T o conﬁgure the Netopia R2121 to use the two onboard modems and a third external modem on the Auxiliary serial port, you should use the following conﬁguration options. This might be done to allow three separate simultaneous dial-in/dial-out connections or one or two aggregated dial-in/dial-out calls using Multilink PPP.

■ Install the special optional modem cable available from your reseller or directly from

Netopia.

■ use the SmartStart™ Wizard, to conﬁgure your outbound connection to an ISP. For

instructions on this option, see “Setting up your Router with the SmartStart Wizard” on

page 3-3.

■ manual conﬁguration using console-based management. You simply attach your modem

using the special modem cable, and enter the telephone number and modem init string in your WAN conﬁguration. For instructions on this option, see “Adding a third modem” on

page 5-5.

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User’s Reference Guide

Introduction 1-1

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Overview

The Netopia R2121 Dual Analog Router is a full-featured, stand-alone, multiprotocol router for connecting diverse local area networks (LANs) to the Internet and other remote networks. The Netopia R2121 Dual Analog Router uses two 56Kbps modems communicating over standard analog telephone lines to provide your whole network with a high-speed connection to the outside world.

This section covers the following topics:

■ “Features and capabilities” on page 1-1

■ “How to use this guide” on page 1-2

Features and capabilities

The Netopia R2121 Dual Analog Router provides the following features:

■ WAN connection over two analog phone lines using two built-in 56Kbps modems

■ Support for a third (external) modem via the Auxiliary port

■ Support for Multilink PPP to aggregate the separate analog modems into a single virtual data pipe of

112Kbps using the built-in modems or 168Kbps by adding an external 56Kbps modem

■ Support for Ethernet LANs

■ Status lights (LEDs) for easy monitoring and troubleshooting

■ SmartStart™ Wizard software for easy conﬁguration over an Ethernet network connection. The SmartStart

Wizard may include an optional automatic registration with one of several major ISPs, making the process as simple as completing a registration form. Using the alternate manual setting to conﬁgure the router for an ISP that’s not listed, the software allows you to conﬁgure your internal connection by entering just ﬁve ﬁelds: username, password, dialup number, DNS, and IP gateway.

■ Support for IP and IPX routing for Internet and Intranet connectivity

■ IP address serving (over Ethernet or a WAN link) which allows local or remote network nodes to

automatically acquire an IP address dynamically from a designated pool of available addresses

■ Support for Console-based management

■ Support for remote conﬁguration by your reseller, your network administrator, or technicians at Netopia,

Inc.

■ Wall-mountable, Bookshelf (Side-stackable), or Desktop-stackable design for efﬁcient space usage

■ SmartIP™ makes it simple and economical to connect a workgroup of users to the Internet or a remote IP

1-2 User’s Reference Guide

network by using Network Address Translation and a single IP address.

■ SmartPhone™ allows the router to share telephone lines with analog telephones or facsimile machines,

saving the cost of adding separate telephone lines for these devices. More than Plain Old Telephone Service (POTS), SmartPhone adds distinctive ringing and CallerID capabilities.

■ AppleTalk support (available as a separate add-on AppleTalk kit, including a ﬁrmware feature set

enhancement and custom HD-15 dual RJ-11 PhoneNET™ connector) allows for LocalTalk to Ethernet routing, assigning IP addresses to Macintosh users (MacIP), IP functionality for LocalTalk users, and AURP tunneling for connectivity between remote AppleTalk networks.

■ SmartView tool allows for real-time monitoring of router status lights (LEDs), through one or more

information forms on a web-based Java applet. Internet browsers such as Netscape Navigator™ and Microsoft’s Internet Explorer™ may be used for SmartView.

How to use this guide

This guide is designed to be your single source for information about your Netopia R2121 Dual Analog Router. It is intended to be viewed on-line, using the powerful features of the Adobe Acrobat Reader. The information display has been deliberately designed to present the maximum information in the minimum space on your screen. You can keep this document open while you perform any of the procedures described, and ﬁnd useful information about the procedure you are performing.

You can also print out all of the manual, or individual sections, if you prefer to work from hard copy rather than on-line documentation. The pages are formatted to print on standard 8 1/2 by 11 inch paper. We recommend that you print on 3-hole punched paper, so that you can put the pages in a binder for future reference. For your convenience, a printed copy is available from Netopia. Order part number TER2121/Doc.

This guide is organized into chapters describing the Netopia R2121’s advanced features. You may want to read each chapter’s introductory section to familiarize yourself with the various features available.

Use the guide’s table of contents and index to locate informational topics.

Making the Physical Connections 2-1

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This section tells you how to make the physical connections to your Netopia R2121 Dual Analog Router. This section covers the following topics:

■ “Find a location” on page 2-1

■ “What you need” on page 2-1

■ “Identify the connectors and attach the cables” on page 2-2

■ “Netopia R2121 Dual Analog Router Status Lights” on page 2-6

Find a location

When choosing a location for the Netopia Router, consider:

■ Available space and ease of installation

■ Physical layout of the building and how to best use the physical space available in relation to connecting

your Netopia Router to the LAN

■ Available wiring and jacks

■ Distance from the point of installation to the next device (length of cable or wall wiring)

■ Ease of access to the front of the unit for conﬁguration and monitoring

■ Ease of access to the back of the unit for checking and changing cables

■ Cable length and network size limitations when expanding networks

For small networks, install the Netopia R2121 near one of the LANs. For large networks, you can install the Netopia R2121 in a wiring closet or a central network administration site.

What you need

Locate all items that you need for the installation. Included in your router package are:

■ The Netopia R2121 with Dual Analog

■ A power adapter and cord with a mini-DIN8 connector

■ An RJ-45 Ethernet cable

■ Two standard RJ-11 telephone cables

■ A dual DE-9 and mini-DIN8 to DE-9 console cable (for a PC or a Macintosh)

■ The Netopia CD containing the SmartStart Wizard, an Internet browser, Adobe® Acrobat® Reader for

2-2 User’s Reference Guide

Windows and Macintosh, ZTerm terminal emulator software and NCSA Telnet 2.6 for Macintosh

You will need:

■ A Windows 95-based PC or a Macintosh with Ethernet connectivity for conﬁguring the Netopia R2121. This

may be built-in Ethernet or an add-on card, with TCP/IP installed and conﬁgured. See “Before running

SmartStart” on page 3-1.

■ Two telephone lines, each with its own jack, or a single jack wired for two phone lines.

Identify the connectors and attach the cables

Identify the connectors and switches on the back panel and attach the necessary Netopia Router cables.

1 Ethernet

Ethernet

2 Telco

Normal Uplink

Telco 2

Auxiliary

POTS Ports 

Phone 2

Console

Phone 1

Telco 1

Power



Power

1. Connect the mini-DIN8 connector from the Power Adapter to the Power port, and plug the other end into an electrical outlet.

2. Connect one end of one of the RJ-11 cables to the “Telco 1" port, and the other end to one of your wall outlets.

Making the Physical Connections 2-3

If you have two phone lines on a single wall outlet, this is the only T elco connection you need to make. The pinout conﬁguration for the lines on the Telco 1 port is shown in the following diagram:

1234

5678

Telco 1

Telco 2

Your ﬁrst Telco number is carried on the inner pair and the second number on the outer pair.

3. If you have a second phone line with its own separate wall outlet, and want to use both built-in modems, connect one end of one of the RJ-11 cables to the “Telco 2" port, and the other end to your second wall outlet.

4. Connect the Ethernet cable to any of the Ethernet ports on the router. (If you are connecting the router to an existing Ethernet hub, use Ethernet port #1 on the router and set the

crossover switch to the Uplink position.) You should now have: the power adapter plugged in; the Ethernet cable connected between the router and

your computer; and the telephone cables connected between the router and the wall outlets.

5. Insert your Netopia CD and follow the instructions to install an Internet browser and the Adobe Acrobat Reader, if you don’t already have them.

6. Now, run the SmartStart application. SmartStart requires the following:

■ your computer must be Ethernet-capable, that is it must have both an Ethernet card and TCP/IP stack

software. See “Before running SmartStart” on page 3-1.

■ your computer and the Netopia R2121 are powered ON.

■ the computer running SmartStart and the Netopia R2121 to be conﬁgured must be on the same Ether-

net segment; there can be no intervening routers. Repeaters, such as 10Base-T hubs, are acceptable.

Go to the section “Setting up your Router with the SmartStart Wizard” on page 3-3 for details on running SmartStart.

2-4 User’s Reference Guide

Netopia R2121 Dual Analog Router Back Panel Ports

The ﬁgure below displays the back of the Netopia R2121 with Dual Analog.

Netopia R2121 with Dual Analog back panel

Telco or line ports

Ethernet

Crossover switch

8 port Ethernet hub

473

Normal/Uplink

625

Telco 2 Telco 1

Auxiliary Console Power

Phone 1Phone 2

Auxiliary port

Console port

Power port

Making the Physical Connections 2-5

The following table describes all the Netopia R2121 Dual Analog Router back panel ports.

Port Description

Power port a mini-DIN8 power adapter cable connection. Telco 1 port a red RJ-11 telephone jack labelled “Telco 1". Console port a DE-9 Console port for a direct serial connection to the console screens. You

may use this if you are an experienced user and choose not to use SmartStart. See “Connecting a local terminal console cable to your router” on page 6-3.

Phone 1 and 2 two yellow Phone ports above the Console port for attaching analog telephone

devices, such as phones or fax machines to share the telephone lines.

Auxiliary port an HD-15 Auxiliary port for attaching an external modem or the optional

AppleTalk kit.

Telco 2 port a red RJ-11 telephone jack labelled “Telco 2".

If you have only one telephone wall jack, supporting either one or two telephone numbers, use the “T elco 1" port. “Telco 1" supports two phone connections on a single line; “Telco 2" supports a single phone connection.

Crossover switch a crossover switch with Normal and Uplink positions. If Ethernet Port #1 is used

for a direct Ethernet connection between a computer and the router, set the switch to the Normal position. If you are connecting the router to an Ethernet hub, use Ethernet port #1 on the router and set the switch to the Uplink position.

8-port Ethernet hub Eight Ethernet jacks. Y ou will use one of these to conﬁgure the Netopia R2121.

For a new installation, you use the Ethernet connection. SmartStart only works over Ethernet. Later, if you want to do some advanced conﬁguration, you can Telnet to the Console-based management screens via the Ethernet connection. You may also use the Console connection to run the Console-based management using a direct serial connection. You may either connect your computer directly to any of the Ethernet ports on the router, or connect both your computer and the router to an existing Ethernet hub on your LAN.

2-6 User’s Reference Guide

Netopia R2121 Dual Analog Router Status Lights

The ﬁgure below represents the Netopia R2121 status light (LED) panel.

Netopia R2121 LED front panel

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16171819 20 21

Ring

Receive

Carrier

Power

Transmit

Modem 1 Modem 2 LAN

Console

Auxiliary

Ring

Receive

Carrier

Transmit

Activity

Collision

Link/Receive

Ethernet

The following table summarizes the meaning of the various LED states and colors:

When this happens... the LEDs...

when the corresponding line is ringing 2 and 8 ﬂash yellow when the modem has carrier 3 and 9 are green. when the line is busy for a non-data call 3 and 9 ﬂash red.

Includes both directly attached and extension phones. (Red, for when the line is not connected and if the phone extension is off the hook; orange, for when the attached phone is off the hook.)

when the router initiates an incoming or

3 and 9 ﬂash green

outgoing call when data is transmitted 4 and 10 ﬂash yellow. when data is received 5 and 11 ﬂash yellow. when carrier is asserted 6 and 7 are green. when data is transmitted or received 6 and 7 ﬂash yellow. when data is transmitted or received by the

12 ﬂashes yellow.

ethernet controller when the Ethernet interface detects a collision 13 ﬂashes red.

Making the Physical Connections 2-7

When this happens... the LEDs...

when link is detected 14 though 21 are solid green. when data is received on their respective ports 14 though 21 ﬂash green

2-8 User’s Reference Guide

+ 250 hidden pages

Netopia R2121 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Overview

Features and capabilities

How to use this guide

Find a location

What you need

Identify the connectors and attach the cables

Netopia R2121 Dual Analog Router Back Panel Ports

Netopia R2121 Dual Analog Router Status Lights