3COM SuperStack II, NETBuilder SI User Manual

0 (0)

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

Copyright © 3Com Corporation, 1998. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without permission from 3Com Corporation.

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 software described herein are provided to you subject to the following restricted rights:

For units of the Department of Defense:

Restricted Rights Legend: Use, duplication, or disclosure by the Government is subject to restrictions as set 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: Use, reproduction, or disclosure is subject to restrictions set forth in subparagraph (a) 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 Unpublished rights reserved under the copyright laws of the United States.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.

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: Users should not attempt to make electrical ground connections by themselves, but should contact the appropriate inspection authority or an electrician, as appropriate.

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

CTR2 — Connection of WAN ports to X.25 packet switching and X.21 leased line services.

CTR 3 — Connection to Basic Rate ISDN services.

EN 60950 — Safety of Information Technology Equipment including Electrical Business Equipment.

EN 41003 — Particular safety requirements for electrical equipment to be connected to Telecom networks.

CONTENTS

ABOUT THIS GUIDE

Conventions 15

Year 2000 Compliance 16

1 FEATURES AND SPECIFICATIONS

Features 17

 

 

Back and Front Panels 18

 

DIP Switches

20

 

Hardware Interrupt Switch

20

Reset Button

21

 

Serial Device Requirements

21

2 USING 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

 

3 INSTALLING 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

 

 

 

 

 

 

 

4 INSTALLING 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

 

5 LOGGING 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

 

 

 

 

 

 

 

 

 

 

 

 

6 BASIC 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

 

 

 

 

 

 

 

 

 

 

7 ADVANCED 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

 

 

 

8 CONFIGURING 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

9 CUSTOMIZING 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

 

 

 

A TROUBLESHOOTING

 

 

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

 

B RELOADING THE SYSTEM SOFTWARE

Reloading the Software 151

Load Errors 152

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® II NETBuilder® SI bridge/router:

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/

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

 

 

 

of data

 

 

Warning

Risk of severe personal injury

 

 

 

 

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”

When you see the word “enter” in this guide, you must type

and “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

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

Compliance

3Com Year 2000 Web page:

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

FEATURES AND SPECIFICATIONS

1

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

 

 

 

100BASE-TX Ethernet.

 

 

 

 

 

 

Boundary routers

One active Ethernet port. If you upgrade to full

 

 

(model 4xx only)

router software, the second port will be functional.

 

 

 

 

WAN port

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

 

 

 

56/64 Kbps CSU/DSU port, depending on the

 

 

 

interface module installed.

 

 

 

 

 

 

Boundary routers

One active serial or WAN port. The remaining two

 

 

(model 4xx only)

ports can be used for back-up.

 

 

 

 

 

 

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.

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

 

 

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.

 

 

 

 

Boundary routers

One active serial or WAN port. The remaining two

 

(model 4xx only)

ports can be used for back-up.

 

 

 

Back and Front

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

Panels

Figure 1 Back Panel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODEL: xxxxxxx

S/N:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NETBUILDER

 

 

1SC05427

 

 

 

 

 

 

 

 

 

 

 

xxxxxx

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

xxx

 

NTWK

080002

04BA1E

LAN

8.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

ADDR:

 

04BA1F

WAN-A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

250V, F2A

 

04BA20

WAN-B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

04BA21

WAN-C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FOR CONTINUED PROTECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AGAINST FIRE HAZARD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REPLACE FUSE ONY WITH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SAME TYPE AND RATING

 

07/31/95

 

20-0261-000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3COM CORP.

SANTA CLARA, CA.

 

 

MADE IN USA

On/off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

switch

 

RPS

 

Product

Power

 

 

receptacle

connector

information label

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

3COM SuperStack II, NETBuilder SI User Manual

 

Model 4xx

 

 

L1 and L2

 

 

 

Ethernet

SERIAL Flex-WAN

 

 

connectors

connectors

Reset

Console

WAN connector

(A and B)

button

connector

 

LAN

L2

WAN

 

 

SERIAL

 

 

SuperStack II

 

 

®

 

L1

(CSU/DSU)

 

 

A

B

 

NETBuilder

 

 

 

L1

L2

100mb

B2

 

 

 

 

 

B1

 

 

 

Link

 

 

 

 

 

 

Link

Line

Link

A

B

 

 

 

 

Aux

 

 

Act

 

 

 

Active

Console

Run

 

 

 

Active

 

Connect

 

 

 

Reset

 

 

 

 

 

Line

 

 

 

 

Load

 

 

 

 

 

 

 

 

Fault

Status

 

 

 

 

 

Fault

 

 

 

 

 

 

 

Fault

Error

 

 

 

 

Test

Fwd

Power/

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SYSTEM

 

 

Fault

 

 

 

 

 

 

 

 

 

 

 

 

Line Act and

 

Link, Active, and

Status

Aux and

Power/

Line Error LEDs

 

Fault LEDs

LEDs

Fwd

Fault LED

100mb, Link, Active,

Link, Connect,

(A and B)

 

LEDs

 

and Fault LEDs

 

Run, Load,

 

and Fault LEDs

 

 

(CSU/DSU B1 and B2)

 

 

(L1 and L2)

 

and Test LEDs

 

 

 

 

L1 and L2

Model 5xx

 

 

 

 

 

Ethernet

 

 

 

connectors

SERIAL Flex-WAN connectors

WAN

Console

 

(A, B, C, and D)

 

connector

connector

 

 

 

LAN

L1 L2

 

 

SERIAL

 

 

 

 

WAN

 

SuperStack II

®

 

 

 

 

 

 

 

 

 

(CSU/DSU)

 

NETBuilder

 

L1

L2

100Mb

 

 

 

 

 

 

 

B1 B2

 

 

 

 

 

A

B

C

D

Line

 

Fwd

Link

A

B

C

Console

 

 

D

 

 

Link

Act

Link

Run

 

 

 

 

 

 

 

 

 

 

Conn

 

Load

 

 

Active

 

 

 

 

 

 

Active

Line

Status

 

 

 

 

 

 

 

 

 

 

 

 

 

Fault

 

 

 

 

 

 

Fault

Error

Fault

 

Test Power

 

 

 

 

 

 

 

 

 

 

 

/Fault

 

 

 

 

 

 

 

 

 

 

 

 

 

SYSTEM

Link, Active, and

Line Act and

Status

Fwd and

Fault LEDs

LEDs

Power/

(A, B, C, and D)

Line Error LEDs

 

Fault LED

100Mb, Link, Active,

Link, Connect,

Run, Load,

 

and Fault LEDs

 

(L1 and L2)

and Fault LEDs

and Test LEDs

(CSU/DSU B1 and B2)

19 Panels Front and Back

Panel Front Chassis 5xx and 4xx Models 2 Figure

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 The hardware interrupt switch is located on the left side of the

Switch bridge/router (when facing the front panel). It is recessed 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

Serial devices using the V.25bis command set over a SuperStack II

Requirements

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

2 YOUR 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.

 

 

Overview

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

 

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

The SuperStack II NETBuilder SI bridge/router provides connection to two

Ports

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® is not available on the model 5xx bridge/routers.

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

Using WAN and SuperStack II NETBuilder SI bridge/routers come with two or four serial Serial Ports 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).

ISDN Port (Model 43x, The ISDN port provides a basic rate interface (BRI). The BRI delivers two 53x, 44x and 54x) 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 A CSU/DSU is equivalent to a modem for a digital line. The 56/64K (Model 45x CSU/DSU port connects directly to a Digital Data Service (DDS).

and 55x)

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

T1/FT1 CSU/DSU Port A CSU/DSU is equivalent to a modem for a digital line. The T1/FT1 (Model 46x and 56x) 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-WAN 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

on Flex-WAN Serial Ports)

Data Transfer Rate

 

 

 

 

Dial-Up Lines:

 

 

 

Plain Old Telephone

PPP

Modem

Up to 56 Kbps

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

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

Table 4 Dial-Up and Leased Line Services

 

 

Serial Device (Required

 

Telco Line

Protocol

on Flex-WAN Serial Ports)

Data Transfer Rate

 

 

 

 

Fractional T1

PPP

CSU/DSU

Up to 24 channels (DS0s) at 64

 

 

 

Kbps each

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

Packet-Switched

 

Serial Device (Required on

 

Services/Protocol

Telco Line

Flex-WAN Serial Ports)

Data Transfer Rate

 

 

 

 

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

 

 

 

 

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

3

 

This chapter describes how to install your SuperStack II NETBuilder SI

 

bridge/router.

 

 

Required

Table 6 lists the items you receive in the shipping carton and items you

Equipment

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* (except for boundary router models) 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.

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

Table 7 provides the environmental requirements of the SuperStack II

Requirements

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

 

 

 

 

Loading...
+ 182 hidden pages