3COM SuperStack II, NETBuilder SI User Manual

Using the SuperStack® II

NETBuilder® SI Bridge/Router

http://www.3com.com/

Part No. 09-1558-000 Published December 1998

3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145

3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notiﬁcation of such revision or change.

3Com Corporation provides this documentation without warranty of any kind, either implied or expressed, including, but not limited to, the implied warranties of merchantability and ﬁtness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.

UNITED STATES GOVERNMENT LEGENDS:

If you are a United States government agency, then this documentation and the softwar e described herein are provided to you subject to the following restricted rights:

For units of the Department of Defense:

Restricted Rights Legend:

forth in subparagraph (c) (1) (ii) for Restricted Rights in Technical Data and Computer Software Clause at 48 C.F.R. 52.227-7013. 3Com Corporation, 5400 Bayfront Plaza, Santa Clara, California 95052-8145.

For civilian agencies:

Restricted Rights Legend:

through (d) of the Commercial Computer Software - Restricted Rights Clause at 48 C.F.R. 52.227-19 and the limitations set forth in 3Com Corporation’s standard commercial agreement for the software. Unpublished rights reserved under the copyright laws of the United States.

If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentation, or on the removable media in a directory ﬁle named LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries.

3Com, Boundary Routing, NETBuilder, NETBuilder II, and SuperStack are registered trademarks of 3Com Corporation. 3TECH is a trademark of 3Com Corporation. 3ComFacts is a service mark of 3Com Corporation.

IBM is a registered trademark of International Business Machines Corporation. AppleTalk is a registered trademarks of Apple Computer, Incorporated. XNS is a trademark of Xerox Corporation. 5ESS is a registered trademark of AT&T. EWSD is a registered trademark of Siemans Corporation.

Other brand and product names may be registered trademarks or trademarks of their respective holders.

The software contained in this product may contain encrypted product which may not be exported or transferred from the U.S. or Canada without an approved U.S. Department of Commerce export license.

The ISDN cable is a TNV connection point as deﬁned by EN 41 003. The ports L1, L2, Console, and SERIAL A and B are SELV ports as deﬁned by EN 41 003.

3Com Corporation, 1998.

Use, duplication, or disclosure by the Government is subject to restrictions as set

Use, reproduction, or disclosure is subject to restrictions set forth in subparagraph (a)

Electromagnetic Compatibility Information

Classes

Various national agencies (in the United States, The Federal Communications Commission (FCC)) govern the levels of electromagnetic emissions from digital devices. Electromagnetic emissions can interfere with radio and television transmission. To reduce the risk of harmful interference these agencies have established requirements for manufacturers of digital devices

The manufacturer of a digital device must test and label a product to inform an end-user of the maximum emission level from the product when used in accordance with its instructions. The emission levels encountered are classiﬁed as Class A or Class B. A system that meets the Class A requirement can be marketed for use in an industrial or a commercial area. A system that meets the more stringent Class B requirement can be marketed for use in a residential area in addition to an industrial or a commercial area.

The end user is generally held responsible for ensuring that her system is suitable for its environment as stated in the above paragraph and bears the ﬁnancial responsibility for correcting any harmful interference.

Modiﬁcations

Modiﬁcations or changes made to this device, and not approved by 3Com, may void the authority granted by the FCC, or other such agency, to operate this equipment.

Shielded Cables

Connections between 3Com equipment and other equipment and peripherals must be made using shielded cables in order to maintain compliance with FCC, and other agency, electromagnetic frequency emissions limits. This statement does not apply to the ISDN cable or 10BASE-T cables.

Federal Communications Commission Notice

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 when the equipment is operated in a commercial environment. This equipment generates, uses and can create radio frequency energy and, if not installed and used inaccordance with the instruction manual, may cause harmful interference to radio communications. 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 and correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.

■

Increase the separation between the equipment and the 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.

In order to meet FCC Class B limits, this equipment must be used only with cables which comply with IEEE

802.3. The user may ﬁnd the following booklet prepared by the Federal Communication Commission helpful:

How to Identify and Resolve Radio-TV Interference Problems

This booklet is available from the U.S. Government Printing Ofﬁce, Washington, DC 20402, Stock No. 004-000-00345-4.

Canadian Notice

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the interference-causing equipment standard entitled “Digital Apparatus,” ICES-003 of the Department of Communications.

Avis Canadien

Cet appareil numérique respecte les limites bruits radioélectriques applicables aux appareils numériques de Classe A prescrites dans la norme sur le matériel brouilleur: “Appareils Numériques”, NMB-003 édictée par le ministre des Communications.

Japanese Notice

Canadian Certiﬁcation Notice

The Industry Canada label identiﬁes certiﬁed equipment. This certiﬁcation means that the equipment meets certain telecommunications network protective, operational, and safety requirements. The Department does not guarantee the equipment will operate to the users’ 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 inside wiring associated with a single line individual service may be extended by means of a certiﬁed connector assembly. 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 designated by the 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:

the appropriate inspection authority or an electrician, as appropriate.

Users should not attempt to make electrical ground connections by themselves, but should contact

FCC Part 68

This eqquipment complies with Part 68 of the Federal Communications Commission (FCC) rules. On the product is a label that contains the FCC registration number for this device. If requested, this information must be provided to the telephone company.

This equipment is designed to be connected to the telephone network or premises wiring using a compatible modular jack which is Part 68 compliant. See installation instructions for details.

If this device causes harm to the telephone network, the telephone company will notify you in advance that temporary discontinuance of service may be required. The telephone company may request that you disconnect the equipment until the problem is resolved.

The telephone company may make changes in its facilities, equipment, operations or procedures that could affect the operation of this equipment If this happens, the telephone company will provide advance notice in order for you to make necessary modiﬁcations to maintain uninterrupted service.

If trouble is experienced with this equipment or for repair or warranty information, please follow the applicable procedures explained in the “Technical Support” section of this manual.

CSU/DSU Module

This device is intended to connect to Digital Data Services in the USA. Please inform the telephone company of the following information pertaining to this device before installation. Note that this device does not handle encoded analogue content and therefore does not require that a Digital Afﬁdavit be ﬁled with the telephone company.

FCC Registration Number See label on product Required connector (USOC) RJ-48S Service Order Code (SOC) 6.OF Facility Interface Codes (FIC) 04DU5-56, 04DU5-64

NT1 Module

This device is intended to connect to ISDN Basic Rate Service in the USA. Please inform the telephone company of the following information pertaining to this device before installation. Note that this device does not handle encoded analogue content and therefore does not require that a Digital Afﬁdavit be ﬁled with the telephone company.

FCC Registration Number See label on product Required Connector (USOC) RJ-49 Service Order Code (SOC) 6.OF Facility Interface Codes (FIC) 02IS5

CE Notice

Marking by the symbol indicates compliance of this equipment with the EMC, Telecom and Low Voltage Directives of the European Community. Such marking is indicative that this equipment meets or exceeds the following technical standards:

EN55022

— Limits and methods of measurement of radio interference characteristics of information

technology equipment.

EN50082-1

light industrial.

CTR2 CTR 3 EN 60950 EN 41003

— Electromagnetic compatibility - generic immunity standard part 1: residential, commercial, and

— Connection of WAN ports to X.25 packet switching and X.21 leased line services.

— Connection to Basic Rate ISDN services.

— Safety of Information Technology Equipment including Electrical Business Equipment. — Particular safety requirements for electrical equipment to be connected to Telecom networks.

ONTENTS

BOUT THIS GUIDE

Conventions 15 Year 2000 Compliance 16

EATURES AND SPECIFICATIONS

Features 17 Back and Front Panels 18 DIP Switches 20 Hardware Interrupt Switch 20 Reset Button 21 Serial Device Requirements 21

SING THE BRIDGE/ROUTER IN YOUR NETWORK

Overview 23 Using Ethernet LAN Ports 23 Using WAN and Serial Ports 24

ISDN Port (Model 43x, 53x, 44x and 54x) 24 56/64K CSU/DSU Port (Model 45x

and 55x) 24 T1/FT1 CSU/DSU Port (Model 46x and 56x) 24 Serial Ports 25

Telco Services 25

Using PPP on Dial-Up and Leased Lines 26 Using Packet-Switched Network Services 26

IBM Legacy Networks 27

NSTALLING THE HARDWARE

Required Equipment 29 Environmental Requirements 30 Mounting the Bridge/Router 31

Mounting Kit 31 Installing on a Tabletop 31 Stacking with Brackets 32 Installing in a Rack 33

Cabling the Connectors 34

Cabling the LAN Connectors 34 Cabling the WAN Connector 35

Model 43x and 53x ISDN S/T 35 Model 44x and 54x ISDN U 35 Model 45x and 54x 56/64K CSU/DSU 36 Model 46x and 56x T1/FT1 36

Cabling the Serial Connectors 37 Attaching a Redundant Power System 38 Connecting a PC, Terminal, or Modem 39 Shutting Down 39

NSTALLING OR REMOVING AN INTERFACE MODULE

Removing the Cover 41 Removing an Existing Module (Model 4xx) 43 Installing a New Module (Model 4xx) 45 Removing an Existing Module (Model 5xx) 47 Installing a New Module (Model 5xx) 49

OGGING ON AND PERFORMING ADMINISTRATIVE TASKS

Turning on the System 53

Verifying Successful Startup 54 Attaching a Console 55 Logging on to the System 55 Choosing the User Interface 56

Deciding which Interface to Use 56

Using Menus 56

Using the Command-line Interface 57 Changing the Root Password 59 Changing the Default Console Port Baud Rate 60 Adding User Accounts 60 Setting the Time and Date 61 Setting System Information 61

Setting Up Security 62

ASIC CONFIGURATION OF PORTS AND PATHS

Paths, Ports, and Virtual Ports 63

Paths and Ports 63 Dynamic Paths 64 Multiple Static Paths per Port 65 Virtual Ports 65

Virtual Ports over Frame Relay and X.25 66 Virtual Ports over PPP 67

Parent Ports for Frame Relay and X.25 68 Path and Port Numbering 69 Conﬁguring Ethernet Paths and Ports 70 Conﬁguring ISDN on the WAN Port (43x, 44x, 53x, and 54x) 70

Conﬁguring ISDN in the U.S. and Canada 70 Conﬁguring ISDN in Europe, Australia, and Asia 71 Placing a Data Over Voice Call 72

Example 73

Enabling Digi64S2 73 Conﬁguring the 56/64 Kbps CSU/DSU WAN Port (Model 45x and 55x) 74 Conﬁguring the T1/FT1 RJ-48 Telco Port (Model 46x and 56x) 74 Conﬁguring Serial Ports with DCEs 75 Conﬁguring Serial Ports with DTEs 76 Where to Go From Here 77

DVANCED CONFIGURATION OF PORTS AND PATHS

Conﬁguring Dial-Up Lines with PPP 79

ISDN on the WAN Port (43x, 44x, 53x and 54x) 80

Scenario 1: Using Each B Channel Separately 81 Scenario 2: Using Both B Channels Together 82 Scenario 3: Connecting to Multiple Destinations 82

Conﬁguring Dial-Up over PPP with Modems or TAs 86

Scenario 1: Single Destination per Port 86 Scenario 2: Multiple Destinations 87

Conﬁguring Bandwidth Management for PPP 89

Setting Normal Bandwidth 89 Enabling Dial-On-Demand 90

Using Manual Dial 90 Conﬁguring Bandwidth-On-Demand 91 Conﬁguring Disaster Recovery 92

Conﬁguring Frame Relay 93

Scenario 1: Multiple Destinations, Nonmeshed 94 Scenario 2: Partially Meshed Topology 95 Scenario 3: Fully Meshed Topology 97

Conﬁguring X.25 97

Scenario 1: Multiple Destinations, Nonmeshed 98 Scenario 2: Fully Meshed Topology 99

Where To Go From Here 99

ONFIGURING BRIDGING AND ROUTING

Conﬁguring the Central Node for Boundary Routing 101 Conﬁguring Transparent Bridging 101

Managing the Bridge/Router 102 Per-Port Transparent Bridging 102

Conﬁguring IP Routing 102

Assigning Addresses and Enabling IP Routing 103 Conﬁguring Static Routes 103

Subnet Masks 105 Override Option 106

Learning Routes with OSPF 106

OSPF over Dial-On-Demand Dial-Up Lines 107

Conﬁguring Route Redundancy 107

Using a Static Route 107 Using OSPF 107

Assigning Addresses Automatically from BOOTP Servers 108

Conﬁguring IPX Routing 109

Assigning Addresses and Enabling IPX Routing 109 Optimizing IPX for Dial-On-Demand Dial-Up Lines 109 Conﬁguring Static Routes 109

Deﬁning a Default Route 110 Override Option 110

Conﬁguring Route Redundancy Using a Static Route 110

USTOMIZING YOUR SOFTWARE

Naming Paths and Ports 111

Path and Port Naming Restrictions 111 Using the 56/64 Kbps CSU/DSU Module Autobaud Feature 112

Prerequisites 112

Defaults 112

Procedure 112 Working with Dial Number Lists 113

Adding a Phone Number 113

Redialing When the Connection Fails 113

Dialing the Same Phone Number Multiple Times 113

Positioning a Phone Number 114

Editing an Existing Phone Number 114

Deleting a Phone Number 114 Using Statistics on the 56/64 Kbps CSU/DSU Port

(45x and 55x) 115 Using Statistics on the T1/FT1 RJ-48 Telco Port (46x and 56x) 116

Network Statistics 116

User Statistics 117

T1/FT1 Driver Statistics 118

T1/FT1 Parameter Conﬁguration 119 Conﬁguring Data Compression 119

ROUBLESHOOTING

Using the Monitor Utility 121

Boot 121

Conﬁgure Flash Load 122

Clear EEPROM 122

Display Files 122

Dump 122

Flash Load 123

Help 123

Repeat Last Command 123

Reset 123

Self Test 123 Normal LED Meanings 124

System LEDs 124

Serial LEDs 124 WAN LEDs 125 LAN LEDs 125

Error LED Meanings 126

Troubleshooting During the Load Phase 126 Troubleshooting During the Test Phase 131 Errors Indicated by the Serial LEDs 131 Errors Indicated by the WAN LEDs 132

Performing Loopback Tests 133

Response to Local Loopback Assertion 133 Performing a Loopback Test on the ISDN Port (43x, 53x, 44x and

54x) 133

Prerequisites 133

Performing a V.54 Loopback Test on the CSU/DSU Port (45x and 55x) 135

Performing a Local Loopback Test on the CSU/DSU Port (45x and 55x) 137

Performing a Remote Loopback Test on a 56/64 Kbps CSU/DSU Module 139

Performing a Local Loopback Test on the T1/FT1 Port (46x and 56x) 141

Performing a Remote Loopback for V.54 on a T1/FT1 Port 142 Performing a Remote ATT Loopback Test on the T1/FT1 Port 142 Performing a Remote ANSI Loopback Test on the T1/FT1 Port 143 QRSS Testing on a T1/FT1 Port 143 Performing a Loopback Test on a Serial Port 144

Performing a Memory Dump 145

Conﬁguring the Dump Destination 146 Obtaining the MAC Address 147 Creating a File for the Memory Dump 147 Verifying the TFTP Process 148 Verifying the Memory Dump Procedure 149

ELOADING THE

Reloading the Software 151 Load Errors 152

YSTEM SOFTWARE

C SYNTAX CONVENTIONS

Full Form Syntax 153 Abbreviated Syntax 154 Symbols 154 Full and Abbreviated Syntax Examples 155 Variations in Command Syntax 156

Entering Service Names in Command Lines 157 Using Aliases 157 Command History Substitution 158 Privilege Level 159 ISDN-Related Syntax Variation (Models 43x and 44x) 159 Getting Help 160

D CONNECTORS AND CABLES

Console Connector and Cables 163

PC Cable 163

Terminal Cable 164

Modem Cable 164 LAN Connector and Cables 165

10BASE-T Cabling 165

Cabling Standards 166

100BASE-TX Cabling 166

Creating a Valid Network 166

WAN Connector and Cables 170

ISDN S/T Cable 170

ISDN U Cable 172

56/64K CSU/DSU Cable 173

RJ-48 T1 Cable 174 Serial Connectors and Flex-WAN Cables 174

RS-232 DTE Cable Pinouts 177

RS-232 DCE Cable Pinouts 178

V.35 DTE Cable Pinouts 179

V.35 DCE Cable Pinouts 180

X.21 DTE Cable Pinouts 181

X.21 DCE Cable Pinouts 182

RS-449 DTE Cable Pinouts 183

RS-449 DCE Cable Pinouts 184

RS-530 DTE Cable Pinouts 185

E PROVISIONING YOUR ISDN LINE

Ordering U.S. and Canadian ISDN BRI Services 187

Switch Provisioning Tables 189

AT&T 5ESS Switch 189 AT&T 5ESS Custom Switch 190 DMS 100 and National ISDN 1 191 Siemens EWSD Switch 192

SPIDs 192 NT1s and Power Supplies 193 Ordering German ISDN BRI Services 194 Ordering Dutch ISDN BRI Services 195

F TECHNICAL SUPPORT

Online Technical Services 197

World Wide Web Site 197

3Com FTP Site 197

3Com Bulletin Board Service 198

Access by Analog Modem 198 Access by Digital Modem 198

3ComFacts Automated Fax Service 199 Support from Your Network Supplier 199 Support from 3Com 199 Returning Products for Repair 201

3COM CORPORATION LIMITED WARRANTY

ABOUT THIS GUIDE

This guide includes basic software conﬁguration information for the the SuperStack

For more information about conﬁguring the software, see Using Enterprise OS Software.

This guide is intended for experienced system integrators and network administrators.

If release notes are shipped with your product and the information there differs from the information in this guide, follow the instructions in the release notes.

Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format (PDF) or HTML on the 3Com World Wide Web site:

http://www.3com.com/

II NETBuilder® SI bridge/router:

Conventions Table 1 and Table 2 list conventions that are used throughout this guide.

Table 1 Notice Icons

Icon Notice Type Alerts you to...

Information note Important features or instructions

Caution Risk of personal safety, system damage, or loss

Warning Risk of severe personal injury

of data

16 ABOUT THIS GUIDE

Table 2 Text Conventions

Convention Description

Screen displays This typeface represents information as it appears on the

screen.

Syntax Evaluate the syntax provided and supply the appropriate

values. Placeholders for values you must supply appear in angle brackets. Example:

Enable RIPIP using:

SETDefault !<port> -RIPIP CONTrol = Listen

In this example, you must supply a port number for <port>.

Commands Enter the command exactly as shown in text and press the

Return or Enter key. Example:

To remove the IP address, enter:

SETDefault !0 -IP NETaddr = 0.0.0.0

This guide always gives the full form of a command in uppercase and lowercase letters. However, you can abbreviate commands by entering only the uppercase letters and the appropriate value. Commands are not case-sensitive.

The words “enter” and “type”

When you see the word “enter” in this guide, you must type something, and then press Return or Enter. Do not press Return or Enter when an instruction simply says “type.”

Keyboard key names If you must press two or more keys simultaneously, the key

names are linked with a plus sign (+). Example:

Press Ctrl+Alt+Del

Words in italics Italics are used to:

■ Emphasize a point.

■ Denote a new term at the place where it is defined in the

text.

■ Identify menu names, menu commands, and software

button names. Examples: From the Help menu, select Contents. Click OK.

Year 2000 Compliance

For information on Year 2000 compliance and 3Com products, visit the 3Com Year 2000 Web page:

http://www.3com.com/products/yr2000.html

FEATURES AND SPECIFICATIONS

This chapter provides an overview of the SuperStack II NETBuilder SI bridge/router and includes the following information:

■ Features

■ Back and Front Panels

■ DIP Switches

■ Hardware Interrupt Switch

■ Serial Device Requirements

Features Table 3 lists features of the SuperStack II NETBuilder SI bridge/router.

Table 3 Features of the SuperStack II NETBuilder SI Bridge/Router

Feature Description

Processor Motorola 68360 28.1 MHz Ethernet ports Two LAN ports that can be used with 10BASE-T or

Boundary routers (model 4xx only)

WAN port The WAN port can be an ISDN S/T, ISDN U, or

Boundary routers (model 4xx only)

Models 43x and 53x WAN port is an ISDN S/T port Models 44x and 54x WAN port is an ISDN U port Models 45x and 55x WAN port is a 56/64 Kbps CSU/DSU port Models 46x and 56x WAN port is a T1/FT1 CSU/DSU port

Memory 8 MB flash memory and 16 MB DRAM.

100BASE-TX Ethernet. One active Ethernet port. If you upgrade to full

router software, the second port will be functional.

56/64 Kbps CSU/DSU port, depending on the interface module installed.

One active serial or WAN port. The remaining two ports can be used for back-up.

18 CHAPTER 1: FEATURES AND SPECIFICATIONS

Table 3 Features of the SuperStack II NETBuilder SI Bridge/Router (continued)

Feature Description

Serial ports Two (model 4xx) or four (model 5xx) Flex-WAN

Boundary routers (model 4xx only)

serial ports that can connect to RS-232, V.35, RS-449, X.21, or RS-530 interfaces. See “Serial Connectors and Flex-WAN Cables” on page 174 for information about Flex-WAN cables.

One active serial or WAN port. The remaining two ports can be used for back-up.

Back and Front Panels

Power

receptacle

Figure 1 shows the back panel of the SuperStack II bridge/router.

Figure 1 Back Panel

MODEL: xxxxxxx

S/N:

NETBUILDER

xxxxxx

xxx

NTWK

100-240VAC, 50/60HZ, 1.0-0.5A

ADDR:

250V, F2A

FOR CONTINUED PROTECTION

AGAINST FIRE HAZARD REPLACE FUSE ONY WITH SAME TYPE AND RATING

SANTA CLARA, CA. MADE IN USA

3COM CORP.

On/off switch

RPS

connector

information label

Figure 2 shows the front panel of the model 4xx bridge/router and the model 5xx bridge/router.

1SC05427

080002 04BA1E LAN

04BA1F

WAN-A

04BA20

WAN-B

04BA21

WAN-C

07/31/95

Product

8.3

20-0261-000

Figure 2 Models 4xx and 5xx Chassis Front Panel

Back and Front Panels 19

Console

connectors

SERIAL Flex-WAN

Model 4xx

connector

Reset

button

(A and B)

Aux

NETBuilder

SuperStack II

Link

B A

SERIAL

Run

Load

Console

Reset

Active

Status

Power/

Fault

Fwd

Test

SYSTEM

Fault

Power/

Fault LED

Fwd

LEDs

Aux and

Run, Load,

Status

LEDs

Fault LEDs

and Test LEDs

(A and B)

Link, Active, and

Console

connector

WAN

connector

Model 5xx

Fwd

Run

NETBuilder

SuperStack II

Console

Link

B2 B1

Line

WAN

(CSU/DSU)

D C B A

Power/

Fwd and

Fault LED

Power

/Fault

Load

Test

Status

SYSTEM

Status

Conn

Fault

Act

Line

Error

Link

Active

Fault

Run, Load,

and Test LEDs

LEDs

Link, Connect,

and Fault LEDs

Line Act and

B1 and B2)

(CSU/DSU

Line Error LEDs

Ethernet

L1 and L2

connectors

Connect

Fault

Link

B2 B1

Line

Error

Line

Act

WAN

(CSU/DSU)

WAN connector

100mb

Link

Fault

Active

LAN

Link, Connect,

and Fault LEDs

(CSU/DSU B1 and B2)

Line Act and

Line Error LEDs

100mb, Link, Active,

and Fault LEDs

(L1 and L2)

SERIAL

(A, B, C, and D)

SERIAL Flex-WAN connectors

100Mb

Link

Fault

Active

L2 L1

LAN

Ethernet

L1 and L2

connectors

Fault LEDs

(A, B, C, and D)

Link, Active, and

100Mb, Link, Active,

and Fault LEDs

(L1 and L2)

20 CHAPTER 1: FEATURES AND SPECIFICATIONS

DIP Switches DIP switches are located on the left side of the bridge/router (when facing

the front panel) and are for 3Com use only.

CAUTION: To avoid accidentally erasing your ﬂash memory or reinitializing the EEPROM, make sure all switches are in the down position.

Left side of unit

DIP switches

Hardware Interrupt Switch

The hardware interrupt switch is located on the left side of the bridge/router (when facing the front panel). It is r ecessed into an opening near the DIP switches. Press the switch with a nonconductive object, such as a plastic stylus, to activate the monitor ﬁrmware utility.

Left side of unit

Hardware interrupt switch

WARNING: Use only a nonconductive object, such as a plastic stylus, to press the hardware interrupt switch. Do not use the tip of a pencil. Graphite particles from the pencil may cause you to receive an electric shock and may damage components on the motherboard.

Reset Button 21

Reset Button Pressing the Reset button resets the bridge/router. The reset button on

the model 4xx bridge/router is on the front panel as shown in Figure 2. The reset button on the model 5xx bridge/router is on the left side of the bridge/router (when facing the front panel) as shown in Figure 3.

Figure 3 Reset Switch (Model 5xx)

Left side of unit

Reset switch

Serial Device Requirements

Serial devices using the V.25bis command set over a SuperStack II bridge/router must support:

■ High-level data link control (HDLC) with NRZ.

■ CRN command.

■ 8 (data bits), N (no parity), and 1 (stop bit) if a parity option is

provided.

■ V.25bis addressed mode.

■ Synchronous data and DTE connection. The SuperStack II NETBuilder

bridge/router does not support an asynchronous serial connection.

Serial devices using the DTR command set over a SuperStack II bridge/router RS-232 interface must support:

■ DTR State to Dial: HIGH.

■ DTR State Hangup: Low.

■ DTR State Answer: HIGH.

■ Synch Data Xmt (synchronous data and DTE connection). The

SuperStack II NETBuilder bridge/router does not support an asynchronous serial connection.

■ Auto Answer mode.

■ User-stored phone number.

22 CHAPTER 1: FEATURES AND SPECIFICATIONS

USING THE BRIDGE/ROUTER IN

Overview SuperStack II bridge/routers maintain connectivity among small, midsize,

OUR NETWORK

This chapter gives an overview of SuperStack II NETBuilder SI bridge/routers and describes how they ﬁt in your network. It also describes the software features of the bridge/router.

and large branch ofﬁces and the corporate LAN. SuperStack II NETBuilder SI bridge/routers come with two Ethernet ports,

two or four serial ports, and one of the following WAN ports: ISDN S/T (models 43x and model 53x), ISDN U (models 44x and 54x), 56/64 Kbps Carrier Service Unit/Data Service Unit (CSU/DSU) (models 45x and 55x), or T1/FT1 Telco port (models 46x and 56x). You can change any model 4xx bridge/router to another model 4xx, or any model 5xx to another model 5xx, by installing, removing, or replacing an interface module.

All models can be upgraded to any software package. All models have dual-image software support for upgrading and backup.

Using Ethernet LAN Ports

The SuperStack II NETBuilder SI bridge/router provides connection to two Ethernet LANs using either 10BASE-T or 100BASE-TX Ethernet. Boundary router models have one port disabled. If you upgrade to full router software, the second port will be functional.

Leaf node Boundary Routing bridge/routers.

is not available on the model 5xx

24 CHAPTER 2: USING THE BRIDGE/ROUTER IN YOUR NETWORK

Using WAN and Serial Ports

ISDN Port (Model 43x,

53x, 44x and 54x)

SuperStack II NETBuilder SI bridge/routers come with two or four serial ports and one of the following WAN ports: a built-in ISDN S/T terminal adapter (TA) (models 43x and 53x), a built-in ISDN U TA (models 44x and 54x), a built-in 56/64 Kbps CSU/DSU (models 45x and 55x) or a built-in T1/FT1 Telco port (models 46x and 56x).

The ISDN port provides a basic rate interface (BRI). The BRI delivers two bearer (B) channels and one delta (D) channel. Each B channel can transmit up to 64 kilobits per second (kbps); the D channel transmits information about the call to computers at the switching system at a rate of 16 kbps. You can use both B channels together for a combined data rate of 128 kbps, or use each 64 kbps B channel separately.

Some ISDN lines support up to 56 Kbps per B channel. For more information, contact your ISDN service provider.

Order ISDN lines from the phone company. See Appendix E for more information about ordering ISDN lines.

Installations in Hong Kong should be conﬁgured to originate and receive ISDN calls at 64 Kbps. Due to the variety of ISDN switches in the Hong Kong Telcom network, the SuperStack II NETBuilder SI bridge/router does not handle rate adapted ISDN calls at 56 Kbps properly.

56/64K CSU/DSU Port

(Model 45x

and 55x)

T1/FT1 CSU/DSU Port

(Model 46x and 56x)

A CSU/DSU is equivalent to a modem for a digital line. The 56/64K CSU/DSU port connects directly to a Digital Data Service (DDS).

Order DDS lines from the phone company. Contact your phone company for more information about DDS lines and the services available for them.

A CSU/DSU is equivalent to a modem for a digital line. The T1/FT1 CSU/DSU port connects directly to a T1 line or a fractional T1 line. Fractional T1 consists of 24 channels (DS0s) at 64 Kbps each, so you can connect to one or more DS0s with the T1/FT1 port.

Order T1 lines from the phone company. Contact your phone company for more information about T1 lines and the services available for them.

Telco Services 25

Serial Ports The serial ports are multifunction Flex-W AN ports that provide connection

to industry-standard V.35, RS-232, RS-449, RS-530, or X.21 Data Communications Equipment (DCE) or Data Terminal Equipment (DTE) serial devices. You can buy Flex-WAN cables separately from 3Com. See Appendix D for more information about Flex-WAN cables.

If you are using two SuperStack II NETBuilder SI bridge/routers connected directly to each other by the serial ports (back-to-back), the bridge/routers do not meet radiated emissions speciﬁcations.

For boundary routers, only one serial or WAN port can be active. The remaining ports are used for back-up only.

Telco Services To create a WAN, you must buy lines and services from a

telecommunications company (Telco). Services include dial-up lines, leased lines, and packet-switched services.

Dial-up lines, like ISDN, allow you to dial your destination when necessary and hang up when you no longer need the connection. A leased line is always available between two locations. Dial-up and leased lines both use the Point-to-Point Protocol (PPP).

Packet-switched services, like Frame Relay, use a combination of leased or dial-up lines with Telco-owned switching, which frees you from the cost of owning the line the entire length.

Table 4 describes dial-up and leased line services available for the WAN and serial ports. Table 5 describes packet-switched services.

Table 4 Dial-Up and Leased Line Services

Serial Device (Required

Telco Line Protocol Dial-Up Lines:

Plain Old Telephone Service (POTS)

ISDN BRI PPP TA 2 channels up to 64 Kbps each Switched 56 PPP CSU/DSU 56 Kbps

Leased Lines:

E1 PPP CSU/DSU 2.048 Mbps T1 PPP CSU/DSU 1.544 Mbps

PPP Modem Up to 56 Kbps

on Flex-WAN Serial Ports)

Data Transfer Rate

26 CHAPTER 2: USING THE BRIDGE/ROUTER IN YOUR NETWORK

Table 4 Dial-Up and Leased Line Services

Serial Device (Required

Telco Line Protocol

Fractional T1 PPP CSU/DSU Up to 24 channels (DS0s) at 64

Digital Data Service (DDS) PPP CSU/DSU Up to 64 Kbps

*Some ISDN lines support up to 56 Kbps per B channel. For more information, contact your ISDN service provider.

Table 5 Packet-Switched Services

on Flex-WAN Serial Ports)

Data Transfer Rate

Kbps each

Packet-Switched Services/Protocol

X.25 POTS Modem Up to 56 Kbps Frame Relay Leased line CSU/DSU Up to 2.048 Mbps SMDS Leased line CSU/DSU Up to 2.048 Mbps

Telco Line

Serial Device (Required on Flex-WAN Serial Ports)

Data Transfer Rate

Using PPP on Dial-Up and Leased Lines

All dial-up and leased lines use PPP. If you want to use multiple lines or channels to connect to the same destination, you can use Multilink PPP. Multilink PPP is especially useful for ISDN, as described in the following section.

ISDN ISDN consists of two bearer (B) channels and one delta (D) channel. Each B channel can transmit up to 64 Kbps; the D channel transmits signaling information about the call to computers at the switching system at a rate of 16 Kbps.

With Multilink PPP, you can use both B channels together for a combined data rate of 128 Kbps. With PPP, you can use each 64 Kbps B channel separately.

Some ISDN lines support up to 56 Kbps per B channel. For more information, contact your ISDN service provider.

Using Packet-Switched Network Services

You can use packet-switched services with your bridge/router instead of dial-up or leased lines to take advantage of high performance for a reasonable price. This section describes X.25 and Frame Relay.

X.25 An X.25 packet-switched network is deﬁned by the International Telecommunications Union (ITU) Recommendation X.25, a global standard that began development in the 1970s. The recommendation

Telco Services 27

deﬁnes a point-to-point interaction between DTEs and DCEs. In simpler terms, when it is time to transmit data, a terminal connects to a modem or packet switch, which then connects to packet switching exchanges (PSEs) and other DCEs to transmit the data to its ﬁnal destination at another terminal. The links by which data is transmitted are called virtual circuits. Virtual circuits allow data transfers between two points on the network through any number of nodes in the network.

Frame Relay Frame Relay provides a packet-switched network that transfers data between DTEs, which can be routers, bridges, and host computers, by creating virtual circuits and using DCEs to transfer the data to its destination.

Frame Relay differs from X.25 (which was developed to work over voice-grade telephone lines) because it was designed to make use of today’s higher speed digital lines. Frame Relay has also been designed to work within complex internetworking environments with extensions referred to as the local management interface (LMI).

LMI provides information about all devices that are accessible on the Frame Relay network by listing all data link connection identiﬁers (DLCIs) connecting the local system with the remote ones. The LMI improves reliability between the DTE and DCE through frequent exchange of keepalive packets that contain status information.

IBM Legacy Networks Each serial port can be attached directly with a Flex-WAN cable to IBM

legacy equipment like mainframes and automatic teller machines. See Table 4 for supported IBM protocols.

28 CHAPTER 2: USING THE BRIDGE/ROUTER IN YOUR NETWORK

INSTALLING THE HARDWARE

This chapter describes how to install your SuperStack II NETBuilder SI bridge/router.

Required Equipment

Table 6 lists the items you receive in the shipping carton and items you need to provide.

Table 6 Equipment Received and Equipment Needed

Shipping carton contents ■ SuperStack II NETBuilder SI bridge/router

■ Power cable

■ Models 44x and 54x: ISDN U cable

■ Models 45x, 55x, 46x and 56x: CSU/DSU loopback plug

■ Rack-mount kit

■ Models 46x and 56x: RJ-48 T1 cable

■ Software CD-ROM

■ Documentation and documentation CD-ROM

What you need to provide ■ Synchronous serial devices like a channel service unit/digital service unit

(CSU/DSU), modem, or ISDN TA.

■ NT1 for models 43x and 53x in the U.S. and Canada

■ Interface module (available from 3Com — optional)

■ 10BASE-T or 100BASE-TX network cables

■ Flex-WAN cables (available from 3Com). See “Serial Connectors and Flex-WAN

Cables” on page 174 for more information about ordering Flex-WAN cables.

■ Models 43x and 53x: ISDN S/T cable

■ Models 45x and 55x: CSU/DSU cable

■ Terminal, PC, or modem and cable

*The software is preinstalled in the flash memory drive of the bridge/router and automatically loads when you turn on the power.

The software CD-ROM is for software recovery purposes only.

(except for boundary router models)

WARNING: To eliminate cable noise emission in excess of FCC regulations, part 15, subpart J, and EN55022B, all interconnection cables should be equipped with shielded connectors, the backshells of which must completely surround the cable shield.

30 CHAPTER 3: INSTALLING THE HARDWARE

For more information on cables, see Appendix D.

Environmental Requirements

Table 7 provides the environmental requirements of the SuperStack II bridge/routers.

Table 7 Environmental Requirements

Parameter Minimum Requirement Maximum Requirement Temperature

Operating 5 °C 40 °C Nonoperating -40 °C 75 °C

Altitude

Operating 15,000 ft 15,000 ft Nonoperating 40,000 ft 40,000 ft

Relative Humidity

Operating 10% noncondensing 90% noncondensing Nonoperating 10% noncondensing 90% noncondensing

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