DIGITAL MultiSwitch Hub 624T Installation and Configuration

DIGITAL MultiSwitch Hub 624T Installation and Configuration

DIGITAL MultiSwitch Hub 624T

Installation and Configuration

Part Number: EK-DLMR2-IN. A01

February 1997

This book describes how to install, cable and configure the DIGITAL MultiSwitch Hub 624T when residing in a DIGITAL MultiSwitch 600 System (Stack Director or Stack Station) or a DEChub 900

MultiSwitch.

Revision/Update Information:

This is a new document.

Digital Equipment Corporation makes no representations that the use of its products in the manner described in this publication will not infringe on existing or future patent rights, nor do the descriptions contained in this publication imply the granting of licenses to make, use, or sell equipment or software in accordance with the description.

Possession, use, or copying of the software described in this publication is authorized only pursuant to a valid written license from DIGITAL or an authorized sublicensor.

© Digital Equipment Corporation 1997. All rights reserved. Printed in U.S.A

The following are trademarks of Digital Equipment Corporation:

DEC, DEChub, clearVISN, ThinWire, and the DIGITAL logo.

All other trademarks and registered trademarks are the property of their respective holders.

FCC Notice — Class A Computing Device:

This equipment generates, uses, and may emit radio frequency energy. The equipment has been type tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC rules, which are designed to provide reasonable protection against such radio frequency interference.

Operation of this equipment in a residential area may cause interference in which case the user at his own expense will be required to take whatever measures may be required to correct the interference. Any modifications to this device - unless expressly approved by the manufacturer - can void the user's authority to operate this equipment under part 15 of the FCC rules.

VCCI Notice — Class 1 Computing Device:

This equipment is in the 1st Class category (information equipment to be used in commercial and/or industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference by

Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in commercial and/or industrial areas. Consequently, when used in a residential area or in an adjacent area thereto, radio interference may be caused to radios and TV receivers. Read the instructions for correct handling.

CE Notice — Class A Computing Device:

Warning!

This is a Class A product. In a domestic environment, this product may cause radio interference, in which case the user may be required to take adequate measures.

Achtung!

Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes

Rundfunkstörungen auftreten, in welchen Fällen der Benutzer für entsprechende Gegenma

ß nahmen verantwortlich ist.

Attention!

Ceci est un produit de Classe A. Dans un environment domestique, ce produit risque de créer des interférences radioélectriques, il appartiendra alors à l’utilisateur de prendre les mesures spécifiques appropriées.

Contents

Preface

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv

About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv

Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv

Organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix

Part I DIGITAL MultiSwitch Hub 624T

1 Product Description

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

In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Technology Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Shared Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

What is the DIGITAL MultiSwitch 600 System? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

DIGITAL MultiSwitch 600 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Using DIGITAL MultiSwitch 600 System Modules in a DEChub 900 MultiSwitch . . . . . . . . . . 1-6

What is the DIGITAL MultiSwitch Hub 624T? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

DIGITAL MultiSwitch Hub 624T Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

MIB Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Remote Monitoring (RMON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

DIGITAL MultiSwitch Hub 624T Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

DIGITAL MultiSwitch Hub 624T Back Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

DIGITAL MultiSwitch Hub 624T Optional Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

10BaseT Expansion Port Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

Carrier Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

MM-10 Modular Media Interface Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

AUI MM-10 (DLXAU-MA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

Reverse AUI MM-10 (DLXRA-MA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

iii

10Base2 MM-10 (DLXTW-MA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

10BaseFL MM-10 (DLXFI-MA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

10BaseT MM-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

2 Option Card Installation and Cabling

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Installing DIGITAL MultiSwitch Hub 624T Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Removing the Dust Cover from the Expansion Slot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Installing the 10BaseT Expansion Port Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Installing the Carrier Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Configuring and Installing the MM-10 Option Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Configuring Jumpers on the AUI MM-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Configuring Jumpers on the Reverse AUI MM-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Configuring Jumpers on the 10Base2 MM-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Configuring Jumpers on the 10BaseFL MM-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Configuring Jumpers on the 10BaseT MM-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Installing an MM-10 Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Connecting Cables to the MM-10 Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Connecting Cables to the AUI MM-10 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Connecting Cables to the Reverse AUI MM-10 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Connecting Cables to the 10Base2 MM-10 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Connecting Cables to the 10BaseFL MM-10 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Connecting Cables to the 10BaseT MM-10 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

3 Module Installation and Cabling

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Installing a DIGITAL MultiSwitch Hub 624T in a Stack Director or Stack Station . . . . . . . . . . 3-2

Installing the DIGITAL MultiSwitch Hub 624T in a DEChub 900 . . . . . . . . . . . . . . . . . . . . . . . 3-4

Task 1: Compare the Power Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Task 2: Seat the Module into the DEChub 900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Task 3: Verify Initial LED Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Task 4: Connect the Setup-Port Cables to the DEChub 900 . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Connecting Cables to 10BaseT Ports on the DIGITAL MultiSwitch Hub 624T . . . . . . . . . . . . 3-10 iv

4 Module Configuration

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Configuring the Module in a Stack Director or DEChub 900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

[9] Start Redirect Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Using the Module’s Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

[1] Restart with Factory Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

[2] Restart with Current Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

[3] Show Current Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

[4] Dump Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Configuring the Module in a Stack Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

[1] Restart with Factory Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

[2] Restart with Current Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

[3] Show Current Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

[4] Dump Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

5 Redundant-Link Configuration

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

In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Basic Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Major Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Redundant-Link Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Redundant-link Pair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Master Port Pair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Responder Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Nonresponder Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Master Control Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Primary Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Secondary Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Redundant-Link Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Simple Redundant-Link Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Complex Redundant-Link Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Partial Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Full Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

v

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Fault Detection Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Recommendations for Redundant-Link Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

6 Module Management

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

What is clearVISN?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

MultiChassis Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Stack Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Requirements for Managing the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

DIGITAL MultiSwitch 600 System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

DEChub 900 MultiSwitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Managed Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Repeater Summary Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Repeater Port Summary Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Repeater Port Details Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Repeater Security Summary Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

Repeater Security Intrusion Log Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

Dual-Port Redundancy Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19

Dual-Port Redundancy Add Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

DIGITAL MultiSwitch 600 System Interconnect Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22

Using the DIGITAL MultiSwitch Hub 624T in a DIGITAL MultiSwitch 600 System . . . 6-22

DEChub 900 MultiSwitch Configuration Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23

Using the DIGITAL MultiSwitch Hub 624T in a DEChub 900 MultiSwitch. . . . . . . . . . . 6-23

MIBs Supported by the DIGITAL MultiSwitch Hub 624T . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

7 Removing a Module and Option Cards

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Removing a Module from the DIGITAL MultiSwitch 600 System (Hot-Swappable). . . . . . . . . 7-2

Removing Modules from the DEChub 900 (Hot-Swappable) . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

Removing Cables from the 10BaseT Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Removing Cables from the MM-10 Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

Removing Cables from the AUI MM-10 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

Removing Cables from the Reverse AUI MM-10 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Removing Cables from the 10Base2 MM-10 Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Removing Cables from the 10BaseFL MM-10 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

Removing Cables from the 10BaseT (UTP/UTP Crossover) MM-10 Port . . . . . . . . . . . . 7-10 vi

Removing MM-10s from the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

Removing the Carrier Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

Removing the 10BaseT Expansion Port Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

Replacing the Dust Cover on the DIGITAL MultiSwitch Hub 624T . . . . . . . . . . . . . . . . . . . . . 7-14

Part II DIGITAL MultiSwitch 600 System

8 Stack Description

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

What is the DIGITAL MultiSwitch 600 System? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

DIGITAL MultiSwitch 600 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

What is a Stack Director?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

Stack Director Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

Supported MIBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8

Stack Director Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Stack Director Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

What is the Stack Station? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

Stack Station Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

Stack Station Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13

Stack Station Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14

9 Assembling a Stack

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Planning the Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Planning Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Cable Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

Building a DIGITAL MultiSwitch 600 Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Task 1: Securing a Stack Director or Stack Station to Mounting Tray . . . . . . . . . . . . . . . . . 9-4

Securing a Stack Director to Mounting Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

Securing a Stack Station to Mounting Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

Task 2: Securing the Mounting Tray to the Rack Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

Task 3: Inserting the Stack Interconnect Card and Functional Module . . . . . . . . . . . . . . . . . 9-9

Task 4: Attaching the Next Level in the Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

Task 5: Cabling the Stack Director and Stack Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12

Setup Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13

Task 6: Connecting Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15

vii

Task 7: Adding a Stack Level after Initial Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-17

10 Managing a Stack

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

In-Band and Out-of-Band Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

Connecting to a Network Management Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3

SNMP Management Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4

Backplane Auto Healing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

Installation Menu Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

Using the Setup Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

Connecting a Terminal to the Setup Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

Installation Menu Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-7

Menu Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-8

[1] Restart with Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-9

[2] Restart with Current Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10

[3] Show Current Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11

[4] Configure IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12

IP Configure Selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12

[1] Set SNMP Read/Write Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-13

[2] Add SNMP Trap Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-14

[3] Delete SNMP Trap Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-15

[4] Set In-Band Interface IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-16

[5] Set Out-of-Band Interface IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-17

[6] Enable/Disable BootP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-18

[5] Dump Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-19

[6] Downline Upgrade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20

Approximate Downline Upgrade Completion Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20

Initial Setup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-21

Selecting the Level to be Upgraded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-21

Entering the Load File Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22

Load Host IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22

Choosing a Network Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22

TFTP Load Host and Image File Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-24

Download Processing Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-24

Download Processing for Network Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-25

Verifying the Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-26

[7] Configure Out-of-Band Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-28

Out-of-Band Port Configuration Menu Selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-28

Set Port Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-29

Enable/Disable RTS Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-30 viii

[8] Start Event Display Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-31

[9] Start Redirect Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-32

11 Removing or Replacing a Level on the Stack

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

Removing or Replacing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

Task 1: Removing Power Cords and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

Task 2: Removing or Replacing the Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4

Task 3: Removing a Stack Director or Stack Station from the Mounting Tray . . . . . . . . . . 11-8

Part III Reference Information

A Problem Solving

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

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

DIGITAL MultiSwitch Hub 624T LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2

Stack Director LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-4

Stack Station LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-5

MM-10 LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-6

AUI MM-10 LEDs States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-6

Reverse AUI MM-10 LEDs States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-7

Reverse AUI LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-7

10Base2 MM-10 LEDs States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-8

10BaseFL MM-10 LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-9

10BaseT MM-10 LEDs States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-10

DIGITAL MultiSwitch Hub 624T Problem Solving Using the LEDs . . . . . . . . . . . . . . . . . . . .A-11

Stack Director Problem Solving Using the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-14

Stack Station Problem Solving Using the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16

B Connectors and Pin Assignments

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

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

DIGITAL MultiSwitch Hub 624T Connectors and Pin Assignments . . . . . . . . . . . . . . . . . . . . . .B-3

ix

10BaseT (8-pin MJ) Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

MM-10 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

10BaseFL Connectors (BN25J) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

AUI (15-pin D-Sub) Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Reverse AUI (15-pin D-Sub) Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

10Base2 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

10BaseT (8-pin MJ) Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

Stack Director and Stack Station Connectors and Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . B-9

Setup Port and Management Access Port Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9

OBM Port (9-Pin) Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10

10Base2 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-11

H8225 50-Ohm Terminator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-11

Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-12

H8571-J Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-12

C Product Specifications

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

In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

Product Specifications for the DIGITAL MultiSwitch Hub 624T . . . . . . . . . . . . . . . . . . . . . . . . C-2

Product Specifications for the Stack Director . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Product Specifications for the Stack Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

Acoustical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5

Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7

D Ordering Options

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

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Ordering Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Ordering Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

E Associated Documentation

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

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2

How to Order Additional Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4 x

Correspondence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-5

Documentation Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-5

Online Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-5

F Service Information/Support

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

Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2

G Accessing and Configuring RMON Groups

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

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-1

In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-1

What is RMON?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-2

Groups Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-3

How to Access RMON Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-4

Accessing Statistics and History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-4

Accessing Alarms and Events. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-4

Alarm and Event Table Entries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-5

How Traps Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-8

Glossary

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

Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GL-2

Index

Figures

1-1 DIGITAL MultiSwitch 600 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-2 DIGITAL MultiSwitch Hub 624T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1-3 DIGITAL MultiSwitch Hub 624T Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1-4 DIGITAL MultiSwitch Hub 624T Back Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

1-5 10BaseT Expansion Port Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1-6 Carrier Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

1-7 AUI MM-10 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

1-8 Reverse AUI MM-10 Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1-9 10Base2 MM-10 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

xi

1-10 10BaseFL MM-10 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

1-11 10BaseT MM-10 Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

2-1 DIGITAL MultiSwitch Hub 624T Option Slot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2-2 Dust Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2-3 12-Port Expansion Group Card Insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -4

2-4 10BaseT Expansion Port Group Card Port Group Select LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2-5 Carrier Card Insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2-6 AUI MM-10 Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2-7 Reverse AUI MM-10 Jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2-8 10Base2 MM-10 Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2-9 10BaseFL MM-10 Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

2-10 10BaseT MM-10 Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

2-11 MM-10 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

2-12 Connecting AUI MM-10 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

2-13 Connecting Reverse AUI MM-10 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

2-14 10Base2 MM-10 Cable Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

2-15 Connecting Fiber Optic MM-10 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

2-16 Connecting UTP MM-10 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

3-1 Attaching the Module to the Stack Director . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3-2 Module Power Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3-3 Seating the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3-4 Setup-Port Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3-5 10BaseT Cable Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

5-1 Simple Redundant-Link Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

5-2 Complex Redundant-Link Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

5-3 Partial Fault Detection Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

5-4 Full Fault Detection Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

7-1 Removing the Module from a DIGITAL MultiSwitch 600. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7-2 Removing the Module from a DEChub 900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7-3 10BaseT Cable Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

7-4 Removing AUI MM-10 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

7-5 Removing Reverse AUI MM-10 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

7-6 Removing 10Base2 MM-10 Cable Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

7-7 Removing Fiber Optic MM-10 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

7-8 Removing UTP MMI Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

7-9 Removing MM-10 Modular Media Interface Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

7-10 Carrier Card Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

7-11 12-Port Expansion Group Card Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

7-12 Dust Cover Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

8-1 Typical DIGITAL MultiSwitch 600 Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4 xii

8-2 Stack Director Front Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 -9

8-3 Stack Director Back Panel Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

8-4 Stack Station Front Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13

8-5 Stack Station Back Panel Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14

9-1 Stack Director Mounting Tray Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

9-2 Stack Station Mounting Tray Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

9-3 Standard 19" Rack Mount Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

9-4 Relay Rack Mount Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8

9-5 Stack Interconnect Card Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9

9-6 Mounting Plug Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

9-7 Next Stack Station Attachment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11

9-8 Stack Director Port Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12

9-9 Stack Station Port Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13

9-10 IEC Power Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15

11-1 Connector Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3

11-2 Removing a Stack Station. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4

11-3 Stack Interconnect Card Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7

11-4 Removing Stack Director or Stack Station from Mounting Tray. . . . . . . . . . . . . . . . . . . . . . . . 11-8

B-1 10BaseT (8-pin MJ) Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3

B-2 10BaseFL Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-4

B-3 AUI Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-5

B-4 Reverse AUI Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-6

B-5 10Base2 Connector for DIGITAL MultiSwitch Hub 624T . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-7

B-6 10BaseT Port Connector, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-8

B-7 Stack Director and Stack Station Setup Port Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-9

B-8 OBM Port (9-Pin) Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-10

B-9 10Base2 Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-11

B-10 50-ohm Terminator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-11

B-11 H8571-J Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-12

Tables

1-1 DIGITAL MultiSwitch Hub 624T Front Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1-2 DIGITAL MultiSwitch Hub 624T Back Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

1-3 AUI MM-10 Components Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

1-4 Reverse AUI MM-10 Component Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1-5 10Base2 MM-10 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

1-6 10BaseFL MM-10 Component Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

1-7 10BaseT MM-10 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

2-1 AUI MM-10 Jumper Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

xiii

2-2 Reverse AUI MM-10 Jumper Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2-3 10Base2 MM-10 Jumper Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2-4 10BaseFL MM-10 Jumper Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

2-5 10BaseT MM-10 Jumper Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

5-1 Comparison of Partial Fault Detection to Full Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

8-1 Stack Director Front Panel Component Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

8-2 Stack Director Rear Panel Component Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

8-3 Stack Station Front Panel Component Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13

8-4 Stack Station Back Panel Component Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14

10-1 Terminal Setup Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

10-2 Download Process Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-24

A-1 DIGITAL MultiSwitch Hub 624T LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

A-2 Stack Director LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

A-3 Stack Station LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

A-4 AUI LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6

A-5 10Base2 LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

A-6 10BaseFL LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9

A-7 10BaseT LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10

A-8 Typical Combined States of LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A -11

A-9 Stack Director Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14

A-10 Stack Station Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-16

B-1 10BaseT (8-pin MJ) Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

B-2 AUI Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

B-3 Reverse AUI Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

B-4 10BaseT Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

B-5 Stack Director and Stack Station Setup Port Connector Pin Assignments . . . . . . . . . . . . . . . . . B-9

B-6 OBM Port (9-Pin) Connector Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10

C-1 Product Specifications for the DIGITAL MultiSwitch 624T . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

C-2 Product Specifications for the Stack Director . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

C-3 Product Specifications for the Stack Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

C-4 Acoustical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5

C-5 German Acoustical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6

C-6 Connectors for the DIGITAL MultiSwitch Hub 624T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7

C-7 Connectors for the Stack Director . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7

C-8 Connectors for the Stack Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7

G-1 Alarm Table Entry Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-6

G-2 Event Table Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-7 xiv

Preface

Overview

About this Manual

This manual describes how to install, cable and configure the DIGITAL MultiSwitch

Hub 624T in a DIGITAL MultiSwitch 600 System, or in a DEChub 900 MultiSwitch.

The DIGITAL MultiSwitch Hub 624T is a 24-port Ethernet Hub. It can include an optional expansion card with 12 Ethernet ports, or it can include an optional carrier card with two modular media interface slots that can be configured with AUI, Reverse

AUI, 10BaseFL, 10Base2, and 10BaseT modular media interface cards (MM-10s).

The DIGITAL MultiSwitch Hub 624T can be installed in a DIGITAL MultiSwitch 600 stack or a DEChub 900 MultiSwitch chassis.

Intended Audience

This manual is intended for use by personnel who will install, set up, cable and configure the DIGITAL MultiSwitch Hub 624T in a DEChub 900 MultiSwitch, or

DIGITAL MultiSwitch 600 System (with Stack Director and/or Stack Stations).

xv

Organization

Organization

This manual is organized as follows:

Chapter/

Appendix

Part I

1

Description

2

3

4

5

6

7

Part II

8

9

10

11

DIGITAL MultiSwitch Hub 624T

Describes the technology, and front and back panels of the

DIGITAL MultiSwitch Hub 624T module, MM-10s, and the

DIGITAL MultiSwitch 600 system.

Provides instructions for installing and cabling the MM-10s.

Provides instructions for installing and cabling the DIGITAL

MultiSwitch Hub 624T module.

Provides instructions for configuring the DIGITAL

MultiSwitch Hub 624T in a DIGITAL MultiSwitch 600 System and a DEChub 900 MultiSwitch.

Provides instructions for configuring DIGITAL MultiSwitch

Hub 624T ports as redundant-link pairs.

Provides instructions for managing the DIGITAL MultiSwitch

Hub 624T in a DIGITAL MultiSwitch 600 System and a

DEChub 900 MultiSwitch.

Provides instructions for removing the DIGITAL MultiSwitch

Hub 624T from a DIGITAL MultiSwitch 600 System and a

DEChub 900 MultiSwitch.

DIGITAL MultiSwitch 600 System

Provides an overview, describes features, and describes the front and back panels of the Stack Director and the Stack

Station.

Provides instructions for assembling the DIGITAL

MultiSwitch 600 Stack Director and Stack Stations.

Provides instructions for managing the DIGITAL MultiSwitch

600 System.

Provides instructions for removing or replacing a level from a

DIGITAL MultiSwitch 600 System.

xvi

B

C

D

E

F

Chapter/

Appendix

Part III

A

G

Glossary

Index

Organization

Description

Reference Information

Provides installation-specific troubleshooting information using the LEDs.

Provides connector and pin assignment information.

Provides product specifications.

Lists product ordering options and defines the part list for the product.

Lists associated documents and provides ordering information.

Lists service and support information for the DIGITAL

MultiSwitch Hub 624T

Provides information about accessing and configuring RMON groups.

Provides a glossary of terms and acronyms.

Provides an index for the manual.

xvii

Conventions

Conventions

This book uses the following conventions.

Convention

Bold Type

Monospaced Type

<Return>

Description

Indicates user input.

Indicates system output.

Indicates that you press the Return Key.

xviii

Safety

Any warning or caution that appears in this manual is defined as follows:.

WARNING

CAUTION

VORSICHT

ACHTUNG

DANGER

ATTENTION

AVISO

PRECAUCIÓN

Contains information to prevent personal injury.

Contains information to prevent damage to equipment.

Enthält Informationen, die beachtet werden müssen um den Benutzer vor Schaden zu bewahren.

Enthält Informationen, die beachtet werden müssen um die Gerate vor Schaden zu bewahren.

Signale les informations destinées à prévenir les accidents corporels.

Signale les informations destinées à prévenir la détérioration du matériel.

Contiene información para evitar daños personales.

Contiene información para evitar daños al equipo.

Safety xix

Safety

The cautions that must be observed for the hardware described in this manual are listed below in English, German, French, and Spanish.

CAUTION

ACHTUNG

ATTENTION

PRECAUCIÓN

This action deletes all configured settings and replaces them with factory default values. All configuration settings will be lost.

Bei diesem Vorgang werden alle

Konfigurationseinstellungen gelöscht und die

Werkseinstellungen wieder eingesetzt. Alle

Konfigurationsdaten gehen verloren.

Cette action supprime tous les paramètres de configuration et les remplace par des valeurs prédéfinies. Tous les paramètres de configuration seront perdus.

Esta intervención borrará todos los parámetros de configuración y los sustituirá por valores por defecto definidos de fábrica. Se perderán todos los parámetros de configuración.

xx

Safety

WARNING

VORSICHT

DANGER

AVISO

Some fiber optic equipment can emit laser or infrared light that can injure your eyes. Never look into an optical fiber or connector port. Always assume the cable is connected to a light source.

Bestimmte Lichtleitergeräte können für die Augen gefährliches Laser- oder Infrarotlicht abstrahlen.

Vermeiden Sie es daher unter allen Umständen, direkt in ein Lichtleiterkabel oder einen Lichtleiteranschluß zu schauen. Gehen Sie immer davon aus, daß

Lichtleiterkabel mit einer Lichtquelle verbunden sind.

Certains équipements à fibre optique peuvent émettre un rayonnement laser ou infra-rouge pouvant provoquer des troubles oculaires. Ne regardez jamais à l'intérieur d'une fibre optique ou d'un port de connecteur. Considérez que le câble est connecté en permanence à une source lumineuse.

Ciertos equipos de fibras ópticas pueden emitir luz lasérica o infrarroja con riesgos de lesiones en los ojos.

No se debe nunca mirar en una fibra óptica o una puerta de conexión. Siempre hay que suponer que el cable está conectado a una fuente luminosa.

xxi

Safety

CAUTION

ACHTUNG

ATTENTION

PRECAUCIÓN

If power is interrupted during Stage 3 of the DLU process, the firmware image can become corrupted. Do not turn off power to the unit or perform any action that can cause the unit to lose power during Stage 3 of the DLU process.

Solite während der Phase 3 des DLU-Prozesses eine

Unterbrechung der Stromversorgung eintreten, kann das

Firmwareprogramm zerstört verden. Aus diesem Grunde wird dringend empfohlen, Vorkehrungen zu treffen, daß während der Durchführung dieser Phase 3 die

Systemeinheit weder ausgeschaltet noch die

Stromversorgung unterbrochen werden kann.

L’image du microprogramme risque d’être corrumpue, en cas de coupure de courant au cours de l’étape 3 du processus DLU. Ne mettez pas l’unité hors tension et n’exécutez aucune action risquant d’entraîner une coupure d’alimentation au course de cette étape.

Si se interrumpe el suministro eléctrico durante la Etapa 3 del proceso DLU,. puede dañarse la imagen del firmware.

No se debe apagar la unidad ni realizar ninguna operación que pueda causar una interrupción del suministro de la unidad durante la Etapa 3 del mencionado proceso.

xxii

Safety

WARNING

VORSICHT

DANGER

AVISO

Always make sure this unit is adequately grounded. Do not connect more than five Stack Stations into a single power strip unless the power strip is protected by a GFCI device.

Stellen Sie in jedem Falle sicher, daß dieses Gerät vorschriftsmäßig geerdet ist. An einen Stromversorgungskreis dürfen nur dann mehr als fünf Stack Stations angeschlossen werden, wenn der Stromkreis durch einen Schutzschalter abgesichert ist.

DANGER : vérifiez toujours que cette unité est correctement reliée à la terre. Ne connectez pas plus de cinq stations empilables sur une même lisière électrique, sauf si la lisière est protégée par un dispositif GFCI.

ADVERTENCIA - Asegúrese siempre de que esta unidad esté puesta a tierra adecuadamente. No conecte más de cinco estaciones en pila en una platina de alimentación a menos que esté protegida por un dispositivo GFCI.

xxiii

Safety

CAUTION

ACHTUNG

ATTENTION

PRECAUCION

Static electricity can damage modules and electronic components. DIGITAL recommends using a grounded antistatic wrist strap and a grounded work surface when handling any modules.

Module und elektronische Komponenten können durch elektrostatische Entladungen beschädigt werden. Benutzen

Sie immer eine antistatische Gelenkmanschette und eine geerdete Arbeitsunterlage, wenn Sie am offenen Gerät arbeiten.

Les charges excessives d'électricité statique peuvent endommager les modules et les composants électroniques.

DIGITAL conseille l'utilisation d'un bracelet de masse et d'un plan de travail mis à la terre lors de la manipulation des modules.

La electricidad estática puede dañar los componentes electrónicos y los módulos. DIGITAL recomienda que se utilicen cintas de pasadores y superficies de trabajo conectadas a tierra al trabajar con cualquier módulo.

xxiv

Part I

DIGITAL MultiSwitch Hub 624T

DLXRA-MA

DLXRA-MA

DLXAU-MA

DLXAU-MA

DLXFI-MA

DLXFI-MA

DLXTW

-MA

DLXTW-MA

DLXUT

-MA

DLXUT-MA

B

12V

A

12V

DLXMC-MA DLXR1-MA

MultiSwitch Hub 624T

C

7 8 9 10 11 12

A 1 2 3 4 5 6

7x 8x 9x 10x 11x 12x

1x 2x 3x A 4x 5x 6x

7x 8x 9x 10x 11x 12x

1x 2x 3x B 4x 5x 6x

7x

8x

9x

10x

11 x

12x

6x

5x

3x

C

4x

2x

1x

NPB-0756-96F

This illustration shows the DIGITAL MultiSwitch Hub 624T module and the 12-Port

Expansion Group, Carrier Card, and MM-10 cards that it supports.The DIGITAL

MultiSwitch Hub 624T is a 24-port Ethernet Hub that can include an optional 12-port card or two MM-10 option slots. The option slots can be configured with AUI, Reverse

AUI, 10BaseFL, 10Base2 and 10BaseT MM-10 cards.

The DIGITAL MultiSwitch Hub 624T can be installed in a DIGITAL MultiSwitch 600

System or a DEChub 900 MultiSwitch chassis.

Chapter 1

Product Description

Overview

Introduction

This chapter contains a technological overview of the DIGITAL MultiSwitch 600

System and a description of the DIGITAL MultiSwitch Hub 624T. For detailed information about the DIGITAL MultiSwitch 600 System, refer to Part II. For additional information about the DEChub 900 MultiSwitch, refer to the DEChub 900

MultiSwitch Owner’s Manual.

In This Chapter

Topic Page

Ethernet

Shared Hubs

What is the DIGITAL MultiSwitch 600 System?

DIGITAL MultiSwitch 600 Features

Using DIGITAL MultiSwitch 600 System Modules in a DEChub

900 MultiSwitch

What is the DIGITAL MultiSwitch Hub 624T?

DIGITAL MultiSwitch Hub 624T Features

MIB Support

Remote Monitoring (RMON)

DIGITAL MultiSwitch Hub 624T Front Panel

DIGITAL MultiSwitch Hub 624T Back Panel

1-7

1-8

1-9

1-10

1-11

1-13

1-3

1-3

1-4

1-5

1-6

Product Description 1-1

Topic

DIGITAL MultiSwitch Hub 624T Optional Media

10BaseT Expansion Port Group

Carrier Card

MM-10 Modular Media Interface Options

AUI MM-10 (DLXAU-MA)

Reverse AUI MM-10 (DLXRA-MA)

10Base2 MM-10 (DLXTW-MA)

10BaseFL MM-10 (DLXFI-MA)

10BaseT MM-10

Page

1-14

1-14

1-14

1-16

1-17

1-18

1-19

1-20

1-21

1-2 Product Description

Technology Overview

Technology Overview

This section describes the technology you should be familiar with to use these products effectively.

Ethernet

Ethernet is a 10 Mb/s network communications system developed and standardized by

DIGITAL, Intel, and Xerox. It uses baseband transmission, CSMA/CD (carrier sense multiple access with collision detection) access, and logical bus topology. This industry-standard protocol is specified by ISO 802-3 ANSI/IEEE Standard 802.3.

Shared Hubs

A shared hub provides a collection of LAN ports all of which belong to a single collision domain. A shared hub does not allow simultaneous transmissions of multiple packets. The total bandwidth of the LAN, for example, 10Mb/s or 100Mb/s, is shared among the attached stations.

Product Description 1-3

What is the DIGITAL MultiSwitch 600 System?

What is the DIGITAL MultiSwitch 600 System?

The DIGITAL MultiSwitch 600 System is DIGITAL’s integrated workgroup switching system into which the DIGITAL MultiSwitch Hub 624T can be installed.

The DIGITAL MultiSwitch 600 System components provide a complete system of

Ethernet shared hubs and switches. DIGITAL MultiSwitch 600 System modules (1) are attached to either a Stack Station (2) or a Stack Director (3) for power and backplane access (see Figure 1-1). Stack Director and Stack Stations are interconnected with cable-free stack interconnect cards allowing connections (to

Ethernet LAN channels) for easy installation, use and management. Only one Stack

Director is needed to manage a stack of up to 8 hubs and/or switches. The Stack

Director attaches to an optional Mounting Tray (4).

Figure 1-1: DIGITAL MultiSwitch 600 System

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Director

2

3

2

3

B

B

B

B

B

B

B

B

A

A

A

A

A

A

A

A

C

C

C

1

4

NPB-0506-96F

1-4 Product Description

What is the DIGITAL MultiSwitch 600 System?

After a stack is assembled, hubs and switches can be managed via the Stack Director by the clearVISN Stack Manager or the clearVISN MultiChassis Manager network management software applications. The clearVISN Stack Manager provides a

Graphical User Interface (GUI) that allows you to manage the DIGITAL MultiSwitch

600 System. The clearVISN MultiChassis Manager also provides a GUI that allows you to manage both the DEChub 900 MultiSwitch and GIGAswitch product families in addition to the DIGITAL MultiSwitch 600 System.

DIGITAL MultiSwitch 600 Features

When assembled, the DIGITAL MultiSwitch 600 System can include the following features:

Modular architecture.

Choice of 10 Mb/s hub and switches integrated as single SNMP management domain.

Cable-free stack interconnect for seven internal LAN and management channels.

Ability to create a stack of up to eight network devices.

Functional modules that are hot-swappable to eliminate network downtime during network changes.

A Stack Director that contains SNMP management agent with one IP address manages all modules in the stack.

Support for four RMON groups.

Modular Media Interface (MMI) and port expansion options, specific to the functional modules.

Rack mountable.

For a complete description of the DIGITAL MultiSwitch 600 System, including planning and configuration information, refer to Part II, DIGITAL MultiSwitch 600

System.

Product Description 1-5

Using DIGITAL MultiSwitch 600 System Modules in a DEChub 900 MultiSwitch

Using DIGITAL MultiSwitch 600 System Modules in a

DEChub 900 MultiSwitch

The DIGITAL MultiSwitch 600 System modules, such as the DIGITAL MultiSwitch

Hub 624T, may also be used in the DEChub 900 MultiSwitch. Power and backplane connections are implemented using the common 48-pin connector. DIGITAL

MultiSwitch 600 System modules are fully managed and are hot swappable, both in the DIGITAL MultiSwitch 600 System platform and in the DEChub 900 MultiSwitch.

However, there are functional differences when using a DIGITAL MultiSwitch 600

System module in a DEChub 900 MultiSwitch.

The DIGITAL MultiSwitch 600 System uses advanced technology to implement

Ethernet backplane channels. In the DIGITAL MultiSwitch 600 System, 2-wire mode is used to create three Ethernet LAN segments on each of two flex channels on the

Backplane, giving six Ethernet LAN segments. There is also a 10Base2 Ethernet LAN segment available, adding up to a total of seven Ethernet LAN segments.

The DEChub 900 MultiSwitch recognizes a different implementation of backplane channels. There is an identical 10Base2 Ethernet segment on the DEChub 900

MultiSwitch backplane. However, there is only one flex channel available to the 48pin connector. Using 6-wire mode, one Ethernet LAN segment can be created on the flex channel for a total of two backplane Ethernet LAN segments. Therefore, a

DIGITAL MultiSwitch 600 System module used in a DEChub 900 Multiswitch has two backplane Ethernet channels available (10Base2 and one flex channel). The

DIGITAL MultiSwitch 600 System modules are backplane compatible with all

DEChub 900 MultiSwitch modules on the 48-pin connector.

DIGITAL MultiSwitch 600 System modules do not provide the IP services function.

A DEChub 900 MultiSwitch requires the use of an IP services module for in-band access to the SNMP Management Agent through an In-Band connection. When using

DIGITAL MultiSwitch 600 System modules in a DEChub 900 MultiSwitch at least one module supporting IP services is needed if using In-Band Management.

1-6 Product Description

What is the DIGITAL MultiSwitch Hub 624T?

What is the DIGITAL MultiSwitch Hub 624T?

The DIGITAL MultiSwitch Hub 624T (also referred to in this document as the module) is an Ethernet hub with 24 fixed 10BaseT ports. It also has an expansion slot that can be used to add a 12-port 10BaseT Expansion Group (DLXR1-MA) or two modular media interface cards via a Carrier Card (DLXMC-MA). The module uses

MM-10 type modular interface cards.You can combine any of the following MM-10 options into the expansion slots.

AUI (DLXRA-MA)

Reverse AUI (DLXAU-MA)

10Base2 (DLXTW-MA)

10BaseFL (DLXFI-MA)

10BaseT (DLXUT-MA)

Figure 1-2: DIGITAL MultiSwitch Hub 624T

DLXRA-MA

DLXRA-MA

DLXAU-MA

DLXAU-MA

DLXFI-MA

DLXFI-MA

DLXTW

-MA

DLXTW-MA

DLXUT

-MA

DLXUT-MA

A

12V

B

12V

7x

8x

9x

10x

11 x

12x

5x

6x

3x

C

4x

2x

1x

DLXMC-MA DLXR1-MA

MultiSwitch Hub 624T

C

7 8 9 10 11 12

A 1 2 3 4 5 6

7x 8x 9x 10x 11x 12x

1x 2x 3x

A

4x 5x 6x

7x 8x 9x 10x 11x 12x

1x 2x 3x

B

4x 5x 6x

NPB-0756-96F

The DIGITAL MultiSwitch Hub 624T module can be installed in a Stack Director or

Stack Station in a DIGITAL MultiSwitch 600 System or in a DEChub 900

MultiSwitch, both of which supply power and mechanical support to the module.

The Stack Director and the DEChub 900 MultiSwitch provide the ability to manage the module using SNMP (Simple Network Management Protocol).

Product Description 1-7

DIGITAL MultiSwitch Hub 624T Features

DIGITAL MultiSwitch Hub 624T Features

The DIGITAL MultiSwitch Hub 624T includes the following features:

Up to three internal LANs.

Fault-tolerant redundant link capabilities.

Two port groups named A and B, each with 12 10BaseT ports for 10Mb/s Ethernet connections (24 10BaseT ports total). The 10BaseT ports support redundant-link configuration.

Expansion slot that can be populated with

A 12-port 10BaseT Expansion Port Group card, providing 12 additional 10BaseT ports (port group C). These ports support redundant-link configuration or

A Carrier Card with two modular media interface slots that can contain any of these MM-10 modular media interface cards:

— AUI connection

— Reverse AUI connection

— 10Base2 - 10Mb/s, ThinWire coaxial connection

— 10BaseFL - 10Mb/s, Fiber Optic connection

— 10BaseT - 10Mb/s twisted pair connection

The port(s) supplied by the MM-10s are included in port groups A and B.

The 10BaseFL and 10BaseT MM-10s support redundant-link configuration.

Ability to hot-swap modules in a DIGITAL MultiSwitch 600 System or DEChub

900 MultiSwitch.

Alarms, Events, Statistics and History RMON group support in a DIGITAL

MultiSwitch 600 System (requires a Stack Director).

Port-level statistics for monitoring performance on every port.

Port-level security to prevent unauthorized access to the network, including automatic and manual authorization of secure addresses.The DIGITAL

MultiSwitch Hub 624T offers the following two security features:

Eavesdrop prevention. When enabled, this feature prevents unauthorized monitoring of network traffic. Only packets destined for authorized stations are transmitted on the port.

1-8 Product Description

DIGITAL MultiSwitch Hub 624T Features

Intrusion protection. When enabled, this feature prevents unauthorized stations from successfully transmitting data into a DIGITAL MultiSwitch

Hub 624T port. The module compares the source address of the packets received on a port to the list of authorized addresses assigned to that port. If the addresses do not match, the DIGITAL MultiSwitch Hub 624T logs an intrusion violation and can take one of the following actions:

Converts the remainder of this packet to a jam pattern as it is repeated.

Disables the port that detected violation.

Ability to connect the port groups to any of seven software controlled Ethernet backplane LANs in a DIGITAL MultiSwitch 600 System; ability to connect to either of two software controlled Ethernet backplane LANs in a DEChub 900

MultiSwitch.

Port State and Module State LEDs for visual monitoring and troubleshooting.

Compliance with the IEE 802.3 standard.

Upgradeable device firmware (in nonvolatile flash memory) using Trivial File

Transfer Protocol (TFTP) with Flash Loader or through the setup port with any

TFTP server. An IP address is not necessary for the module to upgrade.

Advanced Graphical User Interface (GUI) manageability with DIGITAL’s clearVISN MultiChassis Manager application.

MIB Support

The module provides SNMP agent support for the following management information bases (MIBs) when used in a managed stack or a DEChub 900 MultiSwitch:

MIB II (RFC 1213)

DEChub 900 Public Common MIB

Extended Repeater MIB (RFC)

DIGITAL Extended Repeater MIB

Internet Engineering Task Force (IETF) Repeater MIB (RFC 1516)

RMON MIB (alarms, events, statistics, and history)

For information on how to access DIGITAL MIBs, follow the procedures in the

Release Notes for this product.

Product Description 1-9

DIGITAL MultiSwitch Hub 624T Features

Remote Monitoring (RMON)

The DIGITAL MultiSwitch Hub 624T supports sophisticated Ethernet monitoring with the Remote Network Monitoring Information Base (RMON-MIB). The following

RMON features and options are available:

RMON functions are performed concurrently with the switching function.

Multiple RMON monitors within the module (one for each Ethernet) are accessible by multiple managers.

Basic RMON capability at the LAN level for the following groups:

Statistics. Various statistics measured by the probe for the monitored

Ethernet, including utilization, packet rates, broadcast and multicast rates, and error information.

History. Capturing of periodic statistical samples for later retrieval and analysis by the manager.

Alarms. Specification of thresholds for various monitored variables, in order to generate events.

Events. Controls the generation and notification of events from the probe.

GUI Management with clearVISN RMON Manager/Probe Watch

The following two features are optional upgrades. For more information about these features, refer to ethernet Switch Enterprise RMON Upgrade Configuration.

Enhanced RMON capability for the following five groups of the standard RMON

MIB:

Host Table. Statistics by specific MAC address.

Host Top N. Statistics for the top N addresses, ordered by one of their statistics.

Traffic Matrix. Traffic patterns between pairs of nodes.

Filters. A set of user-defined preconditions for packet capture or events.

Packet capture. Stores packets that meet the filter criteria for later retrieval.

Allows examination of individual packets or sequence of packets to help identify and isolate problems.

RMON capability for a variety of network protocols and applications.

For information on how to access and use the basic RMON features, refer to Appendix

G.

1-10 Product Description

DIGITAL MultiSwitch Hub 624T Features

DIGITAL MultiSwitch Hub 624T Front Panel

Table 1-1 describes the DIGITAL MultiSwitch Hub 624T front panel components and

Figure 1-3 shows their location. For detailed information about the LEDs, refer to

Appendix A.

Figure 1-3: DIGITAL MultiSwitch Hub 624T Front Panel

2 4 6

MultiSwitch Hub 624T

C

7 8 9 10 11 12

A 1 2 3 4 5 6

7x 8x 9x 10x 11x 12x

1x 2x 3x A 4x 5x 6x

7x 8x 9x 10x 11x 12x

1x 2x 3x B 4x 5x 6x

1 3 5 7 8 9

NPB-0465-96F

Table 1-1: DIGITAL MultiSwitch Hub 624T Front Panel Features

Item

1

Icon Name

Power OK LED

Description

Indicates that the module has sufficient power.

2

Module OK LED Indicates that the module passed self-test.

3

4

5

6

10Base2 Port Status

LED

Indicates whether the 10Base2 port is connected to the backplane 10Base2 LAN or the port is disabled by network management.

Network Activity

LEDs

Indicate the level of network traffic for each internal LAN

Port Group Select

LEDs A, B, C

Port Group Select

Pushbutton

The port group (A, B, or C) for which the

Port Status LEDs display status.

Freezes the scanning of the Port Group

Select LEDs. The Port Group Select

LEDs briefly light up one at a time, indicating the port group for which the 12

Port Status LEDs are showing status. LED

C will light only if the 10BaseT

Expansion Port Group is installed.

Product Description 1-11

DIGITAL MultiSwitch Hub 624T Features

Item

7

8

9

Icon Name

Port Status LEDs

1 - 12

10BaseT, 8-pin MJ port connectors

Expansion slot

Description

Provide the status of the port connections for the DIGITAL MultiSwitch Hub 624T port group that is indicated by the Port

Group Select LEDs.

Used to connect end devices such as PCs, workstations, hubs (repeaters), and switches.

Holds optional media including one

12-port 10BaseT Expansion Port Group or one Carrier Card with up to two MM-

10s.

1-12 Product Description

DIGITAL MultiSwitch Hub 624T Features

DIGITAL MultiSwitch Hub 624T Back Panel

Table 1-2 describes the DIGITAL MultiSwitch Hub 624T back panel components and

Figure 1-4 shows their location.

Figure 1-4: DIGITAL MultiSwitch Hub 624T Back Panel

5 2 1

6 4 3

NPB-0458-96F

Table 1-2: DIGITAL MultiSwitch Hub 624T Back Panel Features

Item Name

1

Locking Tab

2

3

Opening for slotted thumbscrew

48-pin Connector

Description

Secures the DIGITAL MultiSwitch Hub 624T to a DEChub 900 MultiSwitch chassis.

Secures the module to a Stack Station or Stack

Director.

4

5

6

Manufacturing

Label

Grounding

Fingers

Mounting Tab

Provides network and power connections to the

DIGITAL MultiSwitch Hub 624T when it is connected to a Stack Station or the DEChub 900

MultiSwitch chassis.

Lists the DIGITAL MultiSwitch Hub 624T module part number, serial number, revision level, and power requirements.

Provide chassis grounding between the Hub

624T and the Stack Station.

Attaches the DIGITAL MultiSwitch Hub 624T to a MultiStack 600 Stack Station or a DEChub

900 MultiSwitch locking receptacle.

Product Description 1-13

DIGITAL MultiSwitch Hub 624T Optional Media

DIGITAL MultiSwitch Hub 624T Optional Media

The DIGITAL MultiSwitch Hub 624T has an expansion slot that accepts either a 12port 10BaseT Expansion Port Group or a Carrier Card that can hold up to two MM-10 modular media interface cards. Chapter 2 provides the procedures for installing these options.

10BaseT Expansion Port Group

The 10BaseT Expansion Port Group (Figure 1-5) provides 12 additional 10BaseT ports. This expands the DIGITAL MultiSwitch Hub 624T to 36 ports. This optional module uses 8-pin MJ port connectors. When installed, the 10BaseT Expansion Port

Group operates as port group C.

The 10BaseT Expansion Port Group is not hot swappable. The DIGITAL MultiSwitch

Hub 624T must be powered off by unplugging the Stack Station/Stack Director or removing the module from the DIGITAL MultiSwitch 600 System or DEChub 900

MultiSwitch in order to install the expansion group.

Figure 1-5: 10BaseT Expansion Port Group

C

NPB-0526-96F

Carrier Card

The DIGITAL MultiSwitch Hub 624T Carrier Card inserts into the expansion slot in the front of the DIGITAL MultiSwitch Hub 624T. The Carrier Card provides the module with two slots for holding 10 Mb/s Ethernet modular media interfaces (MM-

10s). The MM-10s provide connectivity between the module and other network devices using 10Base2, 10BaseT, 10BaseFL, AUI, and Reverse AUI.

The Carrier Card is not hot swappable. The DIGITAL MultiSwitch Hub 624T must be powered off by unplugging the Stack Station/Stack Director or removing the module from the DIGITAL MultiSwitch 600 System or DEChub 900 MultiSwitch in order to install the Carrier Card.

1-14 Product Description

DIGITAL MultiSwitch Hub 624T Optional Media

NOTE

The Carrier Card is intended for use only in the DIGITAL MultiSwitch Hub 624T.

If installed, the port on an MM-10 inserted in the left-side slot of the Carrier Card will be included in port group A. The port on an MM-10 inserted in the right-side slot of the Carrier Card will be included in port group B.

Figure 1-6: Carrier Card

B

12V

DLXMC-MA

A

12V

NPB-0563-96F

Product Description 1-15

MM-10 Modular Media Interface Options

MM-10 Modular Media Interface Options

The DIGITAL MultiSwitch Hub 624T has two modular media interface (MMI) option slots when the Carrier Card is installed. The types of MMI cards used with this product are called MM-10s. The DIGITAL MultiSwitch Hub 624T supports the following types of MM-10 cards:

AUI

Reverse AUI

10Base2

10BaseFL

10BaseT

The MM-10 cards are front-insertable, single-slot option cards. The MM-10 cards are hot-swappable so that you do not have to power down the system to install the card, provided the Carrier Card is already installed. The host module provides the power, initialization, and control for the MM-10 cards. The MM-10s have jumper settings that control the MM-10 configuration, such as enabling SQE tests or monitoring transmit or receive data.

The following sections describe the MM-10 cards. Chapter 2 describes how to install and configure each of the MM-10s in the DIGITAL MultiSwitch Hub 624T.

MM-10

AUI MM-10 (DLXAU-MA)

Reverse AUI MM-10 (DLXRA-MA)

10Base2 MM-10 (DLXTW-MA)

10BaseFL MM-10 (DLXFI-MA)

10BaseT MM-10

Page

1-17

1-18

1-19

1-20

1-21

1-16 Product Description

MM-10 Modular Media Interface Options

AUI MM-10 (DLXAU-MA)

The AUI MM-10 connects the host DIGITAL MultiSwitch Hub 624T module to a standard 12-volt Media Attachment Unit (MAU) or to an end device using an Ethernet cable with a DB-15 connector (AUI cabling). The cable can be up to 50 meters long.

Table 1-3 describes the front panel components on the AUI MM-10 shown in

Figure 1-7. For troubleshooting information using the LEDs, refer to Appendix A.

Only the right-side slot of the Carrier Card provides power to an AUI MM-10. Install an AUI MM-10 in the right slot in order to supply 12V power to the attached device.

An AUI MM-10 installed in the left slot can be used with devices that do not require

12V power, or are externally powered.

Figure 1-7: AUI MM-10 Components

4

3

1

DLXAU-MA

2

NPB-0547-96F

Table 1-3: AUI MM-10 Components Descriptions

Item Icon Name

1

Activity LED

Description

When blinking, traffic on this link has been detected.

2

Port Status

LED

Indicates that the port is OK, has been partitioned by network management, or a loopback test has failed.

When blinking at startup, indicates module is seated correctly.

If MM-10 is in left slot of Carrier Card, indicates

12V power is not available.

3

DB-15

Connector

Connects the AUI port to a MAU or to an end device via Ethernet cabling.

4

Captive screws Attach MM-10 to Carrier Card.

Product Description 1-17

MM-10 Modular Media Interface Options

Reverse AUI MM-10 (DLXRA-MA)

The Reverse AUI MM-10 connects a host DIGITAL MultiSwitch Hub 624T module to an end device using an Ethernet cable with a DB-15 connector (AUI) cabling. The cable can be up to 50 meters long.

Table 1-4 describes the front panel components on the Reverse AUI MM-10 shown in

Figure 1-8. For troubleshooting information using the LEDs, refer to Appendix A.

Figure 1-8: Reverse AUI MM-10 Components

4

3

1

DLXRA-MA

2

NPB-0769-96F

Table 1-4: Reverse AUI MM-10 Component Descriptions

Item

1

Icon Name

Activity LED

Description

When blinking, traffic on this link has been detected.

2

Port Status

LED

3

4

DB-15

Connector

Captive screws

Indicates that the port is OK, has been partitioned by network management, or a loopback test has failed.

When blinking at startup, indicates module is seated correctly.

Connects the Reverse AUI port to an end device via Ethernet cabling.

Attach MM-10 to Carrier Card.

1-18 Product Description

MM-10 Modular Media Interface Options

10Base2 MM-10 (DLXTW-MA)

The 10Base2 MM-10 is a single-port device that connects to standard, 50-ohm

ThinWire coaxial cable. 10Base2 connections require termination at each end of the cable. The port has an optional, 50-ohm internal terminator that is enabled by the

TERM jumper.

Table 1-5 describes the components on the 10Base2 MM-10 shown in Figure 1-9. For troubleshooting information using the LEDs, refer to Appendix A.

Figure 1-9: 10Base2 MM-10 Components

6

3

1

DLXTW

-MA

2

NPB-0576-96F

Table 1-5: 10Base2 MM-10 Components

Item

1

2

3

4

Icon Name

Activity LED

Description

When blinking, traffic on this link has been detected.

Port Status LED Indicates that the port is OK, has been partitioned by network management, or a loopback test has failed.

When blinking at startup, indicates module is seated correctly.

BNC Connector A 10Base2 connector that connects to an

Ethernet device.

Captive screws Attach MM-10 to Carrier Card.

Product Description 1-19

MM-10 Modular Media Interface Options

10BaseFL MM-10 (DLXFI-MA)

The 10BaseFL MM-10 is a single-port 10 Mb/s Ethernet fiber optic port that operates in the 850 nm window over 10BaseFL media at distances up to two km. It is 10BaseFL compliant and is compatible with FOIRL standards. The 10BaseFL MM-10 supports redundant-link (RDP) configuration. See Chapter 5, Redundant-Link Configuration, for further information. Table 1-6 describes the front panel components on the

10BaseFL MM-10 and Figure 1-10 shows their location. For troubleshooting information using the 10BaseFL MM-10’s LEDs, refer to Appendix A.

Figure 1-10: 10BaseFL MM-10 Components

4

6

5

3

1

DLXFI-MA

2

NPB-0578-96F

Table 1-6: 10BaseFL MM-10 Component Descriptions

Item

1

2

3

Icon Name

Activity LED

Description

When blinking, traffic on this link has been detected.

Port Status LED Indicates that the port is OK, has been partitioned by network management, or a loopback test has failed.

When blinking at startup, indicates module is seated correctly.

Transmit

Connector

An ST-type connector for multimode fiber

(MMF) connections.

4

5

Link Status LED On when idle signal is detected between the port and the attached station

Receive

Connector

An ST-type connector for MMF connections.

6

Captive screws Attach MM-10 to Carrier Card.

1-20 Product Description

MM-10 Modular Media Interface Options

10BaseT MM-10

The 10BaseT MM-10 is a single port device that is compatible with category 3, 4, and

5 UTP cabling. It has a straight-through wired (//) and a crossover wired (X) connector.

The 10BaseT MM-10 supports redundant-link (RDP) configuration. See Chapter 5,

Redundant-Link Configuration, for configuration information.

The 10BaseT MM-10 can be jumper-enabled to work with legacy devices that do not emit link pulses. Table 1-7 describes the components on the 10BaseT MM-10 shown in Figure 1-11. For troubleshooting information using the LEDs, refer to Appendix A.

NOTE

While there are two connectors, there is only one active port. Only one of the connectors can be used at a time.

Figure 1-11: 10BaseT MM-10 Components

4

5

6

3

1

DLXUT

-MA

2

NPB-0577-96F

Product Description 1-21

MM-10 Modular Media Interface Options

Table 1-7: 10BaseT MM-10 Components

Item

1

2

Icon Name

Activity LED

Description

When blinking, traffic on link has been detected.

Port Status LED Indicates that the port is OK, has been partitioned by network management, or a loopback test has failed.

3

4

5

6

When blinking at startup, indicates module is seated correctly.

Link Status LED On when idle signal is detected between port and attached station, or when 10BaseT MM-10 is jumpered to enable manual link

A crossover wired port connector.

X

8-Pin MJ

Crossover

Connector

1

//

8-Pin MJ Standard

Connector

1

Captive screws

A straight-through wired port connector that implements a reversed transmit/receive pinout.

Attach MM-10 to Carrier Card.

1

The standard and crossover pinout connectors attach the DIGITAL MultiSwitch Hub 624T to end stations, switches, and other hubs. To determine the correct cable and connector to use, refer to Chapter 2 and

Appendix B of this manual.

1-22 Product Description

Chapter 2

Option Card Installation and Cabling

Overview

This chapter describes how to install the 10Base2 Expansion Group and MM-10 cards in the DIGITAL MultiSwitch Hub 624T module.

In This Chapter

Topic Page

Installing DIGITAL MultiSwitch Hub 624T Options

Removing the Dust Cover from the Expansion Slot

Installing the 10BaseT Expansion Port Group

2-3

2-3

2-4

Installing the Carrier Card

Configuring and Installing the MM-10 Option Cards

Configuring Jumpers on the AUI MM-10

2-6

2-8

2-9

Configuring Jumpers on the Reverse AUI MM-10

Configuring Jumpers on the 10Base2 MM-10

Configuring Jumpers on the 10BaseFL MM-10

Configuring Jumpers on the 10BaseT MM-10

Installing an MM-10 Card

Connecting Cables to the MM-10 Ports

Connecting Cables to the AUI MM-10 Port

Connecting Cables to the Reverse AUI MM-10 Port

Connecting Cables to the 10Base2 MM-10 Port

2-10

2-11

2-13

2-14

2-8

2-16

2-16

2-17

2-18

Option Card Installation and Cabling 2-1

Topic Page

Connecting Cables to the 10BaseFL MM-10 Port

Connecting Cables to the 10BaseT MM-10 Port

2-18

2-20

2-2 Option Card Installation and Cabling

Installing DIGITAL MultiSwitch Hub 624T Options

Installing DIGITAL MultiSwitch Hub 624T Options

The DIGITAL MultiSwitch Hub 624T (Figure 2-1) has an option slot (1) that accepts either a 10BaseT Expansion Group card or a Carrier Card with up to two MM-10 option cards.The following sections provide instructions for installing these options.

Figure 2-1: DIGITAL MultiSwitch Hub 624T Option Slot

7x 8x 9x 10x 11x 12x

MultiSwitch Hub 624T

C

7 8 9 10 11 12

A 1 2 3 4 5 6

1x 2x 3x

A

4x 5x 6x

7x 8x 9x 10x 11x 12x

1x 2x 3x

B

4x 5x 6x

1

NPB-0757-96F

Removing the Dust Cover from the Expansion Slot

Figure 2-2 shows the dust cover location. Use the following procedure to remove the cover.

Figure 2-2: Dust Cover Removal

1

C

B

NPB-0523-96F

Step

1

2

Action

Remove the dust cover by loosening the four captive screws on the dust cover (1).

Save the dust cover with attached captive screws.

Option Card Installation and Cabling 2-3

Installing DIGITAL MultiSwitch Hub 624T Options

Installing the 10BaseT Expansion Port Group

The 10BaseT Expansion Group provides 12 additional 10BaseT ports. To install the card, complete the following steps, which are illustrated by Figure 2-3. A Phillips-head screwdriver is required.

NOTE

Before you install the 10BaseT Expansion Port Group, make sure that the module

has no power connected to it. The 10BaseT Expansion Port Group is not hot-

swappable.

Figure 2-3: 12-Port Expansion Group Card Insertion

2

1

C

B

A

NPB-0524-96F

2

3

4

5

Step

1

Action

Make sure that power to the DIGITAL MultiSwitch Hub 624T is off by unplugging the module from the DIGITAL MultiSwitch 600

System or DEChub 900 MultiSwitch.

Loosen the four screws and remove the dust cover from the module’s expansion slot.

Hold the 10BaseT Expansion Port Group by its bezel and align its edges (1) with the card guides (2) in the module’s expansion slot.

Push the 10BaseT Expansion Port Group into the slot until it is firmly seated inside the module.

Align and securely fasten the four screws.

2-4 Option Card Installation and Cabling

Installing DIGITAL MultiSwitch Hub 624T Options

Step

6

7

Action

Connect the 10BaseT cables.

Power up the DIGITAL MultiSwitch Hub 624T by re-inserting it into the DIGITAL MultiSwitch 600 System or DEChub 900 MultiSwitch.

The following LED states occur: a The Power OK LED lights.

b The module completes self-test and the Module OK LED

lights.

c The Port Group Select LEDs flash repeatedly from A to B to

C for a few seconds (Figure 2-4).

If the LEDs do not light as described, refer to the troubleshooting information in Appendix A of this manual.

Figure 2-4: 10BaseT Expansion Port Group Card Port Group Select LEDs

C

B

A

MultiSwitch Hub 624T

C

7 8 9 10 11 12

A 1 2 3 4 5 6

7x 8x 9x 10x 11x 12x

1x 2x 3x A 4x 5x 6x

7x 8x 9x 10x 11x 12x

1x 2x 3x B 4x 5x 6x

7x 8x 9x 10x 11x 12x

DLXR1-MA 1x 2x 3x C 4x 5x 6x

NPB-0527-96F

Option Card Installation and Cabling 2-5

Installing DIGITAL MultiSwitch Hub 624T Options

Installing the Carrier Card

The Carrier Card must be installed in the DIGITAL MultiSwitch Hub 624T to accept the MM-10s. To install the Carrier Card, complete the following steps, which are illustrated by Figure 2-5. A Phillips-head screwdriver is required.

NOTE

Before you install the DIGITAL MultiSwitch Hub 624T Carrier Card, make sure that the module has no power connected to it. The Carrier Card is not hot-

swappable.

Figure 2-5: Carrier Card Insertion

2

1

A

12V

B

12V

B

B

12V

NPB-0550-96F

2

3

Step

1

4

Action

Make sure that power to the DIGITAL MultiSwitch Hub 624T is off by unplugging the module from its DIGITAL MultiSwitch 600 System or DEChub 900 MultiSwitch.

Loosen the four screws and remove the dust cover from the module’s expansion slot.

Hold the DIGITAL MultiSwitch Hub 624T Carrier Card by its bezel and align its edges (1) with the card guides (2) in the module’s expansion slot.

Push the Carrier Card into the slot until it is firmly seated inside the module.

2-6 Option Card Installation and Cabling

Step

5

6

Installing DIGITAL MultiSwitch Hub 624T Options

Action

Align and securely fasten the four screws.

Power up the DIGITAL MultiSwitch Hub 624T by re-inserting it into the DIGITAL MultiSwitch 600 System or DEChub 900 MultiSwitch.

The following LED states occur: a The Power OK LED lights.

b The DIGITAL MultiSwitch Hub 624T completes self-test and the

Module OK LED lights.

c The Port Group Select LEDs flash repeatedly from A to B.

If the LEDs do not light as described, refer to the troubleshooting information in Appendix A.

Option Card Installation and Cabling 2-7

Configuring and Installing the MM-10 Option Cards

Configuring and Installing the MM-10 Option Cards

Up to two MM-10 cards can be installed into the option slots provided by the Carrier

Card installed in the DIGITAL MultiSwitch Hub 624T. You can install any mix of

MM-10 cards. MM-10s are hot-swappable. The DIGITAL MultiSwitch Hub 624T does not have to be powered off in order to install the MM-10 option cards.

The MM-10s have jumper settings that control the MM-10 configuration, such as enabling SQE tests or monitoring transmit or receive data. The jumpers are set to configurations that are most likely to be used. For special applications or for troubleshooting, you may wish to reconfigure the jumpers. If you change the jumper configuration, you must do so before installing the MM-10 card into the module.

Most of the MM-10 jumpers are three-pin jumpers with two settings (such as SQE

Test): one setting is defined by tying together the middle and left-side pins, the other is defined by tying together the middle and right-side pins. Six-pin jumpers (such as

ACT) have two rows of three pins, and three settings, defined by tying together the two left, two middle, or two right pins. Jumper settings are listed next to the jumpers themselves. The following sections describe the jumper configuration and location on each MM-10 card.

2-8 Option Card Installation and Cabling

Configuring and Installing the MM-10 Option Cards

Configuring Jumpers on the AUI MM-10

Figure 2-6 shows the location of the jumpers on a AUI MM-10. The figures shows the jumpers set to default settings. Table 2-1 describes the jumpers and their default settings.

Figure 2-6: AUI MM-10 Jumper Locations

1

NPB-0804-97F

Table 2-1: AUI MM-10 Jumper Configuration

Item

1

Jumper

ACT ->

Description

Sets Activity LED to blink on for:

• RX = receive packets only

• TX = transmit packets only

• BOTH = all packets

Default

BOTH

Option Card Installation and Cabling 2-9

Configuring and Installing the MM-10 Option Cards

Configuring Jumpers on the Reverse AUI MM-10

Figure 2-7 shows the location of the jumpers on a Reverse AUI MM-10. The figure shows the jumpers set to default settings. Table 2-2 describes the jumpers and their default settings.

Figure 2-7: Reverse AUI MM-10 Jumpers

2

1

NPB-0806-97F

Table 2-2: Reverse AUI MM-10 Jumper Configuration

Item

1

2

Jumper

ACT ->

SQE Test

Description

Sets Activity LED to blink on for:

• RX = receive packets only

• TX = transmit packets only

• BOTH = all packets

Enables SQE Test

0 = Disable; 1 = Enable

Default

BOTH

Disable

2-10 Option Card Installation and Cabling

Configuring and Installing the MM-10 Option Cards

Configuring Jumpers on the 10Base2 MM-10

Figure 2-8 shows the location of the jumpers on a 10Base2 MM-10. The figure shows the jumpers set to default settings. Table 2-3 describes the jumpers and their default settings.

NOTES

If the MM-10 is not at the end of a cable segment, then set the TERM jumper to 0

(external termination).

If the MM-10 is at the end of a cable segment, then the TERM jumper must be set to either internal or external termination. Set to 1 (internal termination) unless you are using an external terminator.

If the cable segment is not grounded elsewhere, then you must ground the cable at the DIGITAL MultiSwitch Hub 624T by setting the COAX GND jumper to 1

(ground coaxial shell). If you are not sure the cable is grounded, ask your network manager for help.

Option Card Installation and Cabling 2-11

Configuring and Installing the MM-10 Option Cards

Figure 2-8: 10Base2 MM-10 Jumpers

4

3

2

1

NPB-0803-97F

Table 2-3: 10Base2 MM-10 Jumper Configuration

Item

1

2

3

4

Jumper

ACT ->

SQE Test

COAX GND

TERM

Description

Sets Activity LED to blink on for:

• TX = transmit packets only

• BOTH = all packets

Enables SQE Test

0 = Disable; 1 = Enable

Enables grounding of coaxial cable

0 = Coaxial shell not grounded;

1 = Ground coaxial shell

Determines whether internal or external 50-ohm terminator is used

0 = External; 1 = Internal

Default

BOTH

Disable

Coaxial shell not grounded

External

2-12 Option Card Installation and Cabling

Configuring and Installing the MM-10 Option Cards

Configuring Jumpers on the 10BaseFL MM-10

Figure 2-9 shows the location of the jumpers on a 10BaseFL MM-10. The figure shows the jumpers set to default settings. Table 2-4 describes the jumpers and their default settings.

Figure 2-9: 10BaseFL MM-10 Jumper Locations

3

2

1

NPB-0801-97F

Table 2-4: 10BaseFL MM-10 Jumper Configuration

Item

1

2

3

Jumper

ACT ->

SQE Test

FDX

Description

Sets Activity LED to blink on for:

• RX = receive packets only

• TX = transmit packets only

• BOTH = all packets

Enables SQE Test

0 = Disable; 1 = Enable

Full Duplex operation

0 = Half Duplex, 1 = Full Duplex

Default

BOTH

Disable

Half

Duplex

Option Card Installation and Cabling 2-13

Configuring and Installing the MM-10 Option Cards

Configuring Jumpers on the 10BaseT MM-10

Figure 2-10 shows the location of the jumpers on a 10BaseT MM-10. The figure shows the jumpers set to default settings. Table 2-5 describes the jumpers and their default settings.

Figure 2-10: 10BaseT MM-10 Jumpers

4

3

2

1

NPB-0774-97F

Table 2-5: 10BaseT MM-10 Jumper Configuration

Item

1

2

3

4

Jumper

ACT —>

SQE Test

FDX

Manual Link

Enable

Description

Sets Activity LED to blink on for:

• RX = receive packets only

• TX = transmit packets only

• BOTH = all packets

Enables SQE test

0 = Off; 1 = On

Full Duplex operation

0 = Half Duplex, 1 = Full Duplex

Allows operation with legacy devices that do not emit link pulses.

0 = Off; 1 = On

Default

BOTH

Off

Half

Duplex

Off

2-14 Option Card Installation and Cabling

Configuring and Installing the MM-10 Option Cards

Installing an MM-10 Card

To install an option card, complete the following steps, which are illustrated by Figure

2-11.

NOTE

AUI MM-10s only provide 12V power when installed in slot B, the right-side slot.

Figure 2-11: MM-10 Installation

2

1

B

A

NPB-0548-96F

Step

1

2

3

4

Action

Hold the MM-10 by its bracket and position it so that it is parallel with a media expansion slot opening on the DIGITAL MultiSwitch Hub

624T module.

Insert the MM-10 and align its sides (1) with the card guide (2) on the slot of the DIGITAL MultiSwitch Hub 624T Carrier Card.

Push in the connector until it is seated in the option slot.

Secure the MM-10 to the DIGITAL MultiSwitch Hub 624T module using the two screws shipped with the MM-10.

To install an additional MM-10, repeat steps 1 through 4.

5

Prior to cabling MM-10s and the DIGITAL MultiSwitch Hub 624T, install the

DIGITAL MultiSwitch Hub 624T in a DEChub 900 or in a DIGITAL MultiSwitch 600

Stack System (Stack Director or Stack Station) as described in Chapter 3.

Option Card Installation and Cabling 2-15

Connecting Cables to the MM-10 Ports

Connecting Cables to the MM-10 Ports

Connect cables to the MM-10 ports after you have installed the MM-10s into the

DIGITAL MultiSwitch Hub 624T and installed the module into a DEChub 900 or in a

DIGITAL MultiSwitch 600 Stack System.

This section describes how to connect cables to the MM-10.

Action

Connecting Cables to the AUI MM-10 Port

Connecting Cables to the Reverse AUI MM-10 Port

Connecting Cables to the 10Base2 MM-10 Port

Connecting Cables to the 10BaseFL MM-10 Port

Connecting Cables to the 10BaseT MM-10 Port

See Page

2-16

2-17

2-18

2-18

2-20

If you need help determining the appropriate cable type to use, refer to Appendix B,

Connector and Pin Assignments.

Connecting Cables to the AUI MM-10 Port

The AUI MM-10 card uses a standard 15-pin DB port connector. Complete the following steps in order to connect the AUI port cable. Figure 2-12 illustrates this procedure.

Figure 2-12: Connecting AUI MM-10 Cables

B

12V

2

A

12V

DLXAU-MA

A

12V

B

12V

DLXAU-MA

2

1

NPB-0758-96F

2-16 Option Card Installation and Cabling

Connecting Cables to the MM-10 Ports

2

3

Step

1

Action

Slide the AUI port connector latch to the unlocked position.

Insert the AUI cable (2) or MAU (1) into the AUI port.

Slide the AUI port connector latch to the locked position.

Connecting Cables to the Reverse AUI MM-10 Port

The Reverse AUI MM-10 card uses a standard 15-pin DB port connector. Avoid rightangle cables; only straight cables are recommended. Complete the following steps to connect the Reverse AUI port cable, shown in Figure 2-13.

Figure 2-13: Connecting Reverse AUI MM-10 Cables

2

DLXRA-MA

1

Step

1

2

Action

Insert the AUI cable (1) into the Reverse AUI port (2).

Slide the latch on the AUI cable to the locked position.

NPB-0655-96F

Option Card Installation and Cabling 2-17

Connecting Cables to the MM-10 Ports

Connecting Cables to the 10Base2 MM-10 Port

The 10Base2 MM-10 module uses a BNC port connector. If you do not use an external connector, the TERM jumper must be set to internal terminator.

Complete the following steps to connect the 10Base2 cable, shown in Figure 2-14.

Figure 2-14: 10Base2 MM-10 Cable Connector

1

B

2

NPB-0651-96F

Step

1

2

Action

Align the cable (1) with the connector (2).

Turn the connector one-quarter to the right until the connector locks.

Connecting Cables to the 10BaseFL MM-10 Port

The 10BaseFL Fiber Optic MM-10 uses multimode fiber (MMF) connections.

Complete the following steps to install the cables and loopback connectors shown in

Figure 2-15.

WARNING

Some fiber-optic equipment can emit laser or infrared light that can injure your eyes. Never look into an optical fiber or connector port. Always assume the cable is connected to a light source.

2-18 Option Card Installation and Cabling

Connecting Cables to the MM-10 Ports

Figure 2-15: Connecting Fiber Optic MM-10 Cables

A

12V

A

12V

B

12V

B

2 1

NPB-0650-96F

3

4

Step

1

2

Action

Remove the protective caps from the module’s 10BaseFL connector and from the 10BaseFL cable plug, if applicable.

Ensure that the key is correctly positioned while aligning the transmit cable connector (1) with the transmit port (2) and the receive cable connector with the receive port.

Turn the connector clockwise to lock into position.

Connect the other end of the cable to a network device (PC, workstation, switch, or hub).

NOTES

The bend radius of any fiber-optic cable is 1.5 inches (3.8 cm) or greater.

To avoid optical power loss, do not touch the fiber ends.

Option Card Installation and Cabling 2-19

Connecting Cables to the MM-10 Ports

Connecting Cables to the 10BaseT MM-10 Port

The 10BaseT MM-10 card is a single-port module that provides both crossover and straight-through 8-pin MJ port connectors. Use only one connector at a time. The cable type depends on the end device to which you are connecting. Use the following table to ensure that the module’s transmit/receive signals connect correctly to the transmitter/receiver of the connected device.

If you have this cable type . . .

Straight-through cable

1

Straight-through cable

1

Crossover cable

1

Crossover cable

1

and the device you are connecting has this connector . . .

Straight-through connector

1

Crossover connector

1

use this connector

1

on the 10BaseT

MM-10

Crossover connector

Straight-through connector

1

Crossover connector

1

Straight-through connector

Straight-through connector

Crossover connector

1

DIGITAL’s straight-through cables are marked (=); crossover connectors (and cables) are marked (X).

If you need help determining the appropriate cable type to use, refer to Appendix B,

Connector and Pin Assignments.

Complete the following steps to connect the UTP cables, shown in Figure 2-16.

Figure 2-16: Connecting UTP MM-10 Cables

2

3

Step

1

2

B

3 1

NPB 0652 96F

Action

Align the release tab (1) on the cable plug (2) with the port connector (3) on the module’s UTP port connector.

Insert the plug into the connector until the release tab snaps into the locked position.

Connect the other end of the cable to an end device (PC, workstation, or repeater)

2-20 Option Card Installation and Cabling

Chapter 3

Module Installation and Cabling

Overview

This chapter describes how to install the module in a DIGITAL MultiSwitch 600

System and in a DEChub 900 MultiSwitch.

In This Chapter

Topic Page

Installing a DIGITAL MultiSwitch Hub 624T in a Stack Director or

Stack Station

3-2

Installing the DIGITAL MultiSwitch Hub 624T in a DEChub 900

Task 1: Compare the Power Ratings

3-4

3-5

Task 2: Seat the Module into the DEChub 900

Task 3: Verify Initial LED Operation

Task 4: Connect the Setup-Port Cables to the DEChub 900

Connecting Cables to 10BaseT Ports on the DIGITAL MultiSwitch

Hub 624T

3-6

3-7

3-8

3-10

Module Installation and Cabling 3-1

Installing a DIGITAL MultiSwitch Hub 624T in a Stack Director or Stack Station

Installing a DIGITAL MultiSwitch Hub 624T in a Stack

Director or Stack Station

Before you cable the DIGITAL MultiSwitch Hub 624T or any of its MM-10s, you need to install the module into a Stack Director, Stack Station, or DEChub 900

MultiSwitch. This section describes how to attach a DIGITAL MultiSwitch Hub 624T to a Stack Director. You will need a flat-blade screwdriver for the installation.

Part II of this manual explains the features of the Stack Director and Stack Station and how to build a stack using the Stack Director and Stack Stations.

NOTES

MultiSwitch 600 modules are fully managed and are hot-swappable, in both the

MultiSwitch 600 platform and in the DEChub 900 MultiSwitch.

The MM-10s are hot swappable. You may install the MM-10’s before or after installing the module in a stack or a hub.

The 10BaseT Expansion Port Group and the Carrier Card are not hot-swappable. You must remove power to the module before installing these option cards.

Hot-swapping is the removal or insertion of a module into either the DIGITAL

MultiSwitch 600 System or the DEChub 900 MultiSwitch without disrupting power to the unit. Do not simultaneously hot-swap more than one module.

Simultaneously inserting or removing more than one module can cause problems with the operation of other installed modules.

Complete the following steps to attach a DIGITAL MultiSwitch Hub 624T to the Stack

Director, as shown in Figure 3-1.

3-2 Module Installation and Cabling

Installing a DIGITAL MultiSwitch Hub 624T in a Stack Director or Stack Station

Figure 3-1: Attaching the Module to the Stack Director

2

1

MultiSwitch 600

Stack Director

3

NPB-0499-96F

Step Action

1

Refer to Part II for instructions on mounting the Stack Director to a mounting tray.

2

3

Place the mounting tab (1) on the DIGITAL MultiSwitch Hub 624T module into the mounting slot on the Stack Director or Stack Station.

Push the DIGITAL MultiSwitch Hub 624T securely against the Stack

Director or Stack Station (2).

4

Securely tighten the slotted thumbscrew on the Stack Director or Stack

Station (3).

Module Installation and Cabling 3-3

Installing the DIGITAL MultiSwitch Hub 624T in a DEChub 900

Installing the DIGITAL MultiSwitch Hub 624T in a DEChub

900

The DIGITAL MultiSwitch Hub 624T hot-swap feature allows you to install the module into the DEChub 900 without turning off power. If you are using MM-10s, you may install them in the module before or after installing the module in the DEChub 900 because they are hot-swappable. Seating the module initiates the module’s powerup sequence.

NOTES

MultiSwitch 600 modules are fully managed and are hot-swappable, both in the

MultiSwitch 600 platform and in the DEChub 900 MultiSwitch.

The MM-10s are hot swappable. You may install the MM-10’s before or after installing the module in a stack or a hub.

The 10BaseT Expansion Port Group and the Carrier Card are not hot-swappable. You must remove power to the module before installing these option cards.

Hot-swapping is the removal or insertion of a module into either the DIGITAL

MultiSwitch 600 System or the DEChub 900 MultiSwitch without disrupting power to the unit. Do not simultaneously hot-swap more than one module.

Simultaneously inserting or removing more than one module can cause problems with the operation of modules.

The following table describes the tasks necessary for installing the module in a

DEChub 900.

4

5

2

3

Task

1

Description

Compare the power ratings.

Seat the module into the DEChub 900.

Verify initial LED operation.

Configure the Ports as Redundant-Link Pairs.

Connect the setup-port cables.

3-4 Module Installation and Cabling

Installing the DIGITAL MultiSwitch Hub 624T in a DEChub 900

Task 1: Compare the Power Ratings

Compare the DIGITAL MultiSwitch Hub 624T power ratings (1) with the available power value shown in the DECHub 900 Manager Status display (2) (see Figure 3-2).

For the DEChub 900, the 12V power is derived from the 15V power source. Although it is listed separately in the DIGITAL MultiSwitch Hub 624T’s product specification, the 12V requirements are included in the DEChub 900 15V power total.

If any of the module's power requirements exceed the available power value shown in the status display, add another power supply (see the DEChub 900 MultiSwitch

Owner’s Manual). If you do not, the module enters a low power mode and disables the ports.

Figure 3-2: Module Power Ratings

1 2

31.8 W

4.8 A 5 V

0.65 A 12 V

0.0 A 15 V

Available: 90.5 W

5V: 13.0 A, 15V: 3.5 A

NPG-0107-95F

Module Installation and Cabling 3-5

Installing the DIGITAL MultiSwitch Hub 624T in a DEChub 900

Task 2: Seat the Module into the DEChub 900

Complete the following steps in order to seat the module in a DEChub 900 as shown in Figure 3-3.

Figure 3-3: Seating the Module

2

3

1

NPG-0004-95F

4

5

2

3

Step

1

Action

Place the module’s mounting tab into a mounting slot (1) on the

DEChub 900.

Pull up the release lever (2) to its unlocked position.

Pivot the module on the mounting slot and align the connectors.

Firmly push the module onto the backplane connectors.

Press down on the release lever (3) to ensure that the module is locked.

3-6 Module Installation and Cabling

Installing the DIGITAL MultiSwitch Hub 624T in a DEChub 900

Task 3: Verify Initial LED Operation

Verify that the module’s Power LED and the Module OK LED light within 1 minute.

The following table describes the LEDS shown in Figure 1-3.

Stage

1

2

Description

The Power LED lights when power is applied to the module, then the module performs a self-test. During the self-test, the port status LEDs display the various patterns that reflect Diagnostic tests.

After the module completes self-test, the Module OK LED lights and remains lit. The Hub Manager identifies the module as the DIGITAL

MultiSwitch Hub 624T.

NOTE

Refer to Appendix A, Problem Solving, if the LEDs do not operate as described.

Module Installation and Cabling 3-7

Installing the DIGITAL MultiSwitch Hub 624T in a DEChub 900

Task 4: Connect the Setup-Port Cables to the DEChub 900

If you have not installed or cabled MM-10s, install and cable MM-10s according to the instructions provided in Chapter 2. See your network manager if you are not sure which cables to connect.

Connect the setup port on the DEChub 900 to a setup port device (terminal or PC).

Once connected, you can use the DEChub 900 MultiSwitch setup port or clearVISN to configure parameters.

To connect the DEChub 900 setup port to a setup port device, use the following cables and adapters:

If the setup-port device is...

Use this cable...

BN24H-xx

1

With this adapter...

H8571-J A PC with a 9-pin D-Sub communications port

A terminal with a 25-pin D-Sub connector

A terminal with a 6-pin MMJ connector

BN24H-xx

1 H8575-A

BN24H-xx

1

1

xx indicates cable length in meters.

For information on Pinout assignments, refer to Appendix B.

Not required

To connect the DEChub 900 setup port to a setup port device, complete the following steps.

Step

1

2

Action

Configure the setup-port device (terminal or PC) as follows:

9600 baud

8 bits

no parity

1 stop bit

Connect the setup-port device cable to the setup port connector on the

DEChub 900 (refer to Figure 3-4).

3-8 Module Installation and Cabling

Installing the DIGITAL MultiSwitch Hub 624T in a DEChub 900

Figure 3-4 shows setup port location.

Figure 3-4: Setup-Port Cabling

1

2

3

Item

1

BN24H

1

DEChub 900 MultiSwitch

3

2

H8571-J

H8575-A

NPB-0510-95

Description

Setup port

Setup-port cable

Setup-port device

Module Installation and Cabling 3-9

Connecting Cables to 10BaseT Ports on the DIGITAL MultiSwitch Hub 624T

Connecting Cables to 10BaseT Ports on the DIGITAL

MultiSwitch Hub 624T

This section describes how to connect cables to the 10BaseT ports on the DIGITAL

MultiSwitch Hub 624T.

The DIGITAL MultiSwitch Hub 624T 12-Port Switch modules use crossover,

10BaseT, 8-pin MJ port connectors. Use the appropriate cable type (crossover or straight-through) to ensure that the module’s transmit/receive signals connect correctly to the transmitter/receiver of the connected device.

Before connecting the cables to the port, note the following rules:

If the device you are connecting has this connector . . .

Straight-through connector

Crossover connector

use this cable type . . .

Straight-through cable

Crossover cable

1

1

1

DIGITAL’s straight-through cables are marked (=); crossover connectors (and cables) are marked (X).

These rules ensure that the sum of crossovers always equal an odd number which is required for proper operation.

Complete the following steps to connect the 10BaseT cable, as shown in Figure 3-5.

Figure 3-5: 10BaseT Cable Connections.

B

11 x

12x

5x

6x

3 2

1

NPB-0623-96F

Step

1

Action

Align the release tab (1) on the cable plug (2) with the connector (3) on the module’s 10BaseT port connector.

3-10 Module Installation and Cabling

Connecting Cables to 10BaseT Ports on the DIGITAL MultiSwitch Hub 624T

Step

2

3

Action

Insert the plug (2) into the connector (3) until the release tab snaps into the locked position.

Connect the other end of the cable to a network device (PC, workstation, switch or hub).

Module Installation and Cabling 3-11

Chapter 4

Module Configuration

Overview

Introduction

This chapter describes how to configure the module in a DIGITAL MultiSwitch 600

System with a Stack Director and Stack Stations, or as a standalone module with a

Stack Station, or in DEChub 900 MultiSwitch.

The module must be installed and cabled prior to configuration.

In This Chapter

Topic

Configuring the Module in a Stack Director or DEChub 900

[9] Start Redirect Mode

Using the Module’s Menus

[1] Restart with Factory Defaults

[2] Restart with Current Settings

[3] Show Current Settings

[4] Dump Error Log

Configuring the Module in a Stack Station

[1] Restart with Factory Defaults

[2] Restart with Current Settings

[3] Show Current Settings

[4] Dump Error Log

4-4

4-5

4-6

4-7

4-8

Page

4-2

4-3

4-9

4-10

4-11

4-12

4-13

Module Configuration 4-1

Configuring the Module in a Stack Director or DEChub 900

Configuring the Module in a Stack Director or DEChub 900

This section describes how to configure the module in a DIGITAL MultiSwitch 600

System or a DEChub 900 MultiSwitch. The following screen is an example of the

MS

624T INSTALLATION MENU when the DIGITAL MultiSwitch Hub 624T module is installed in a DIGITAL MultiSwitch 600 System. If the module is installed in a

DEChub 900 MultiSwitch, the screen will display the

DEChub 900 MultiSwitch

INSTALLATION MENU

.

For DIGITAL MultiSwitch 600 System setup port cabling, refer to Chapter 9, Task 5:

Cabling the Stack Director and Stack Station. For DEChub 900 setup port cabling refer to Chapter3, Task 4: Connect the Setup-Port Cables to the DEChub 900.

NOTE

Periodically, upgrades to the firmware are released. If you need to upgrade the firmware of an existing module, use the DownLine Upgrade procedures provided in Chapter 9.

To access the module’s setup screen, you must choose option

[9] Start

Redirect Mode

.

=============================================================

DIGITAL MultiSwitch 600 INSTALLATION MENU

[1] Restart with Factory Defaults

[2] Restart with Current Settings

[3] Show Current Settings

[4] Configure IP . . .

[5] Dump Error Log

[6] DownLine Upgrade

[7] Configure Out-of-Band Port . . .

[8] Start Event Display Mode

[9] Start Redirect Mode

=============================================================

Enter selection number: 9 <Return>

Examples of the setup screen displays are provided in this chapter to aid in the description of the setup port and to display the options that are available. Because they are examples only, the displays can vary slightly from the actual screen displays on your setup port device.

4-2 Module Configuration

[9] Start Redirect Mode

[9] Start Redirect Mode

The

Start Redirect Mode option redirects the DIGITAL MultiSwitch 600 setup port or the DEChub 900 MultiSwitch Hub Manager setup port to the module that is installed in the requested slot. Choosing this option allows you to configure an installed module or to obtain its status by accessing the specified network module’s installation menu.

After you choose the

Start Redirect Mode

option from the

DIGITAL

MultiSwitch 600 INSTALLATION MENU

, the screen display prompts you for a slot number. Type the slot number in which the DIGITAL MultiSwitch Hub 624T resides. Slot number (8) is used in the following example. After you enter the module’s slot number, the console is redirected to that slot.

NOTE

In the DIGITAL MultiSwitch 600, Slot 1 is the bottom slot (which has the Stack

Director).

The following example shows the dialog associated with this option.

=================================================================

Enter the slot number for redirection (1-8): 8

Console redirected to 8: MS Hub 624T

Attempting connection [Ctrl/C to abort]...

If the redirection is successful, after you press <Return>, the

MS Hub 624T

INSTALLATION MENU

appears on your screen.

Module Configuration 4-3

Using the Module’s Menus

Using the Module’s Menus

This section describes the options that are available from the

MS Hub 624T

INSTALLATION MENU

.

When your module is installed in either a DIGITAL MultiSwitch 600 System or a

DEChub 900 MultiSwitch, the slot number in which the DIGITAL MultiSwitch Hub

624T is installed appears at the top of the menu.

The following example shows the dialog associated with this option.

MS Hub 624T - slot 8

==================================================================

MS Hub 624T INSTALLATION MENU

[1] Restart with Factory Defaults

[2] Restart with Current Settings

[3] Show Current Settings

[4] Dump Error Log

[Ctrl/C] Return to Hub Manager Installation Menu

==================================================================

Enter selection: n <Return>

The installation menu options are as follows:

Topic

[1] Restart with Factory Defaults

[2] Restart with Current Settings

[3] Show Current Settings

[4] Dump Error Log

Page

4-5

4-6

4-7

4-8

4-4 Module Configuration

[1] Restart with Factory Defaults

[1] Restart with Factory Defaults

This option reboots the module, causing its configured Non-Volatile Random Access

Memory (NVRAM) parameters to be cleared and reinitialized to factory default values. If you need to reboot the module and retain the current settings, choose option

[2] Restart with Current Settings

from the

MS Hub 624T

INSTALLATION MENU

. Allow approximately one minute for the module to reboot and complete self-test.

CAUTION

[1]Restart with Factory Defaults

deletes all configured settings and replaces them with factory default values. All configuration settings will be lost.

The following example shows the dialog associated with this option.

Enter selection:

1

MS Hub 624T - slot 8

==================================================================

RESTART WITH FACTORY DEFAULTS

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* IMPORTANT! IMPORTANT! IMPORTANT! *

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* This selection will delete the current configuration *

* settings and reset the system with the factory default *

* settings. All configuration settings will be lost. *

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

==================================================================

Press Y to confirm [N]: Y <Return>

Press Return for Main Menu ...

Module Configuration 4-5

[2] Restart with Current Settings

[2] Restart with Current Settings

This option restarts the module but leaves its configured NVRAM configuration parameters at their current values and saves in NVRAM. Allow approximately one minute for the module to restart.

The following example shows the dialog associated with this option.

Enter selection: 2

MS Hub 624T - slot 8

=================================================================

RESTART WITH CURRENT SETTINGS

This selection will reset your system with the current

configuration settings.

=================================================================

Press Y to confirm [N]: Y <Return>

Press Return for Main Menu ...

4-6 Module Configuration

[3] Show Current Settings

[3] Show Current Settings

This option shows the module’s current settings. If the module is being configured for the first time, some fields will be blank. If the module was upgraded, the Software

(SW) version number will reflect the current version. The hardware ID and ROM

(Boot) code versions are displayed.

The following is an example screen and the fields included in it.

Enter selection : 3

MS Hub 624T - slot 8

1

=====================================================================

MS Hub 624T, HW=V2,RO=V1.04,SW=V1.0

Last Firmware Upgrade V1.0 --> V1.1 @7 resets

SysUpTime : 00:31:18 8 resets

2

3

4

=====================================================================

Press Return for Main Menu ...

Line

1

Field

MS Hub 624T

2 slot 8

HW=V2

3

RO=V1.04

SW=V1.1

Last Firmware

Upgrade V1.0

4

@7 resets

SysUpTime

00:31:18

Resets

Description

The name of the module.

The slot number where the module is located

(1 through 8).

The hardware version.

The boot ROM version.

The current software version number.

Provides details about the last firmware upgrade. These lines will not be displayed if a DownLine Upgrade has never been performed.

The reset count at the time that the last

DownLine Upgrade was performed.

The time since the last reset.

The total resets for the module.

Module Configuration 4-7

[4] Dump Error Log

[4] Dump Error Log

This option displays error log dumps for use by DIGITAL support personnel when analyzing system faults. Up to four error log dumps can be stored, and the most recent dump is displayed first.

The following example shows the display associated with this option:

Enter selection: 4

MS Hub 624T - slot 8

=====================================================================

DUMP ERROR LOG

Current Reset Count: 8

=====================================================================

Entry = 3

Time Stamp = 0 0 1c7

Reset Count = 8

Firmware Rev.= V1.0

Backplane Clock Failure

Dump another entry [Y]/N? <Return>

=====================================================================

No more Error Log entries

Press Return for Main Menu ...

NOTE

The format for some entries in the error log may be different from those shown here.

Use the clearVISN MultiSwitch Manager or clearVISN MultiChassis Manager (refer to the clearVISN User’s Guide for a description of how to access online help) to manage each module in the DIGITAL MultiSwitch 600 System.

4-8 Module Configuration

Configuring the Module in a Stack Station

Configuring the Module in a Stack Station

This section describes how to configure your DIGITAL MultiSwitch Hub 624T when the module is installed either as a standalone device or in an unmanaged Stack. For cabling and setup port information refer to Chapter 3.

The following example shows the dialog associated with this option.

MS Hub 624T

==================================================================

MS Hub 624T INSTALLATION MENU

[1] Restart with Factory Defaults

[2] Restart with Current Settings

[3] Show Current Settings

[4] Dump Error Log

[Ctrl/C] Return to Hub Manager Installation Menu

==================================================================

Enter selection: n <Return>

The installation menu options are as follows:

Topic

[1] Restart with Factory Defaults

[2] Restart with Current Settings

[3] Show Current Settings

[4] Dump Error Log

Page

4-10

4-11

4-12

4-13

Module Configuration 4-9

[1] Restart with Factory Defaults

[1] Restart with Factory Defaults

This option reboots the module, causing its configured Non-Volatile Random Access

Memory (NVRAM) parameters to be cleared and reinitialized to factory default values. If you need to reboot the module and retain the current settings, choose option

[2] Restart with Current Settings

from the

MS Hub 624T

INSTALLATION MENU

. Allow approximately one minute for the module to reboot and complete self-test.

CAUTION

This action deletes all configured settings and replaces them with factory default values. All configuration settings will be lost.

The following example shows the dialog associated with this option.

Enter selection: 1

MS Hub 624T

==================================================================

RESTART WITH FACTORY DEFAULTS

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* IMPORTANT! IMPORTANT! IMPORTANT! *

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* This selection will delete the current configuration *

* settings and reset the system with the factory default *

* settings. All configuration settings will be lost. *

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

==================================================================

Press Y to confirm [N]: <Return>

Press Return for Main Menu ...

4-10 Module Configuration

[2] Restart with Current Settings

[2] Restart with Current Settings

This option restarts the module but leaves the module’s configured (NVRAM) storage parameters at their current values. Allow approximately one minute for the module to restart.

The following example shows the dialog associated with this option.

Enter selection: 2

MS Hub 624T

=================================================================

RESTART WITH CURRENT SETTINGS

This selection will reset your system with the current

configuration settings.

=================================================================

Press Y to confirm [N]: Y <Return>

Press Return for Main Menu ...

Module Configuration 4-11

[3] Show Current Settings

[3] Show Current Settings

This option shows the module’s current settings. If the module is being configured for the first time, some fields will be blank. If the module was upgraded, the Software

(SW) version number will reflect the current version. The hardware ID and ROM

(Boot) code versions are displayed.

The following example shows the display associated with this option and its fields are defined following the screen.

Enter selection : 3

MS Hub 624T

=====================================================================

1

MS Hub 624T, HW=V2,RO=V1.04,SW=V1.1

Last Firmware Upgrade V1.0 --> V1.1 @7 resets

SysUpTime : 00:31:18 8 resets

2

3

=====================================================================

Press Return for Main Menu ...

Line Field

MS Hub 624T

1

2

HW=V2

RO=V1.04

SW=V1.1

Last Firmware

Upgrade V1.0

3

@7 resets

SysUpTime

00:31:18

Resets

Description

The name of the module.

The hardware version.

The boot ROM version.

The current software version number.

Provides details about the last firmware upgrade. These lines will not be displayed if a DownLine Upgrade has never been performed.

The reset count at the time that the last

DownLine Upgrade was performed.

Indicates how long the system has been up since the last reset.

The total resets for the module.

4-12 Module Configuration

[4] Dump Error Log

[4] Dump Error Log

This option displays error log dumps for use by DIGITAL support personnel when analyzing system faults. Up to four error log dumps can be stored, and the most recent dump is displayed first.

The following example shows the display associated with this option:

Enter selection: 4

MS Hub 624T

=====================================================================

DUMP ERROR LOG

Current Reset Count: 8

=====================================================================

Entry = 3

Time Stamp = 0 0 1c7

Reset Count = 8

Firmware Rev.= V1.0

Backplane Clock Failure

Dump another entry [Y]/N? <Return>

=====================================================================

No more Error Log entries

Press Return for Main Menu ...

NOTE

The format for some entries in the error log may be different from those shown here.

Module Configuration 4-13

Chapter 5

Redundant-Link Configuration

Overview

This chapter describes the configuration and implementation of the redundant-link pair

(RLP) of Ethernet 10BaseT links.

Redundant-link configuration refers to two Ethernet links that are configured on a single LAN to provide greater fault tolerance than a single port-to-port configuration provides.

NOTE

You must configure the links using clearVISN before connecting the cables.

Failure to do so can lead to a configuration, such as a repeater loop, that seriously impairs the performance on that segment of the LAN.

In This Chapter

Topic

Basic Configuration

Redundant-Link Components

Redundant-Link Operation

Simple Redundant-Link Configuration

Complex Redundant-Link Configuration

Partial Fault Detection

Full Fault Detection

Recommendations for Redundant-Link Configuration

5-5

5-6

5-8

Page

5-2

5-3

5-9

5-11

5-13

Redundant-Link Configuration 5-1

Basic Configuration

Basic Configuration

Introduction

The basic redundant-link configuration consists of a pair of master ports on the same module and two remote ports on one module or on separate modules. These ports must reside on the same LAN or extended LAN.

NOTE

This configuration does not result in a repeater loop because only one of the links is active at one time.

The remote ports can be one of two types:

• a responder port

— Provides full fault detection

• a nonresponder port

— Provides only partial fault detection

Major Components

Redundant links consist of the following major components:

Master port pair

Responder ports

Nonresponder ports

Master control algorithm (MCA)

Primary link

Secondary link

5-2 Redundant-Link Configuration

Redundant-Link Components

Redundant-Link Components

Introduction

This section describes the components that make up a redundant-link configuration.

Redundant-link Pair

The redundant-link pair (RLP) is a pair of links that provide fault-tolerant communication in the event of transmitter, receiver, or cable failures.

Master Port Pair

The master port pair is the pair of manageable ports that reside on the module that contains the master control algorithm (MCA). One link of the master port pair is the primary link; the other is the secondary link. Use clearVISN to designate the primary and secondary links.

Responder Ports

A responder port, (referred to as a responder) is a manageable port that can detect a failure on its receive link and signal the master port that there is a failure. Responder ports in a redundant-link pair provide full fault detection.

Nonresponder Ports

A Nonresponder port is a port that cannot signal the master that there is a failure. Use of nonresponder ports in a redundant-link pair provides only partial fault detection.

NOTES

Responder and nonresponder ports reside on a separate module from that of the master port, but must reside on the same LAN or extended LAN.

The responder and nonresponder ports can reside on the same module as each other or on separate modules.

Redundant-Link Configuration 5-3

Redundant-Link Components

Master Control Algorithm

The master control algorithm (MCA) resides within the module that is assigned as the master and contains the master port pair. The MCA does the following tasks:

Controls the active and standby status of each of the two ports of the master port pair.

Monitors and reports the states of both links, and stores the status information in a MIB.

Counts the number of link state transitions and stores the information in a MIB.

Primary Link

The primary link, assigned by the MCA, is the active link at the module initialization time and after a reset.

Secondary Link

The secondary link, assigned by the MCA, is the inactive link at the module initialization time and after a reset. The secondary link becomes active if the MCA detects a failure in the primary.

5-4 Redundant-Link Configuration

Redundant-Link Operation

Redundant-Link Operation

Introduction

The master control algorithm (MCA) controls the redundant-link operation by:

Enabling the primary link at initialization time (assuming that there are no failures on that link).

Monitoring the primary link status for failures.

When it detects a failure of the primary link, the MCA does the following tasks:

Task

1

2

Description

Disables the primary link.

Enables the secondary link.

This typically occurs within 3 to 6 milliseconds (10 milliseconds maximum).

Once the primary link is repaired, it remains inactive until one of the following events occurs:

The MCA detects a failure in the secondary link.

The secondary port is internally partitioned or disabled.

The module is rebooted.

Redundant-Link Configuration 5-5

Simple Redundant-Link Configuration

Simple Redundant-Link Configuration

Introduction

In its simplest form, a redundant link consists of a pair of master ports that reside on one module, and a pair of responder or nonresponder ports on a remote module. The remote module is another module in a remote site in the building that is linked using any Ethernet cabling medium, such as fiber-optic links (see Figure 5-1).

NOTE

Use crossover (x) cables when connecting two DIGITAL MultiSwitch Hub 624T modules.

Figure 5-1: Simple Redundant-Link Configuration

MultiSwitch Hub 624T

2

Tx

Rx

1

Tx

Rx

3

Tx

Rx

Tx

Rx

4

NPB-0794-97F

5-6 Redundant-Link Configuration

Simple Redundant-Link Configuration

2

3

Item

1

4

Description

Master Port Pair

Primary link

Secondary link

Single responder ports, nonresponder ports, or a combination. These ports may be on one module or separate modules.

Redundant-Link Configuration 5-7

Complex Redundant-Link Configuration

Complex Redundant-Link Configuration

Introduction

A complex redundant-link configuration consists of a master port pair and responderports, nonresponder ports, or a combination of the two. The responder or nonresponder ports reside on separate modules, as show in Figure 5-2.

Figure 5-2: Complex Redundant-Link Configuration

1

MultiSwitch Hub 624T

2

Tx

Rx

Tx

Rx

3

MultiSwitch Hub 624T

4

Tx

Rx

5

DECrepeater 900TM

Tx

Rx

6

NPB-0795-97F

4

5

6

2

3

Item

1

Description

Master Port Pair

Primary link

Secondary link

Single responder port

A backbone link between these ports

Single nonresponder port

5-8 Redundant-Link Configuration

Partial Fault Detection

Partial Fault Detection

Introduction

Partial fault detection allows the DIGITAL MultiSwitch Hub 624T to achieve limited fault tolerance with connections to nonresponder repeaters, such as the DECrepeater

900TM, DECrepeater 90TS, DECrepeater 90T-16, or to any IEEE compliant 10BaseT repeaters or hubs.

When the link is configured for partial fault tolerance, the MCA disables the primary port and enables the secondary port under the following circumstances:

A link failure of the master’s primary receive port

Partitioning internally detected failures, such as

— An excessive number of collisions

— An excessively long collision

— Received jabbering

— Internally detected MAU failure

Partial fault detection adequately detects most failure conditions. However, it cannot detect a link failure to the nonresponder receive port.

See the following section, Full Fault Detection, for a comparison of partial fault detection to full fault detection.

Redundant-Link Configuration 5-9

Partial Fault Detection

Figure 5-3: Partial Fault Detection Configuration

MultiSwitch Hub 624T DECrepeater 900TM

2

6

Tx

Rx

Tx

Rx

5

1

3

7

6

Tx

Rx

Tx

Rx

4

NPB-0796-97F

6

7

4

5

2

3

Item

1

Description

Master Port Pair

Primary link (initially active).

The master can detect a link failure on its receiver (Rx).

Secondary link (initially standby and disabled).

The master cannot detect a link failure on non-responder receiver

(Rx).

Single nonresponder ports (always enabled).

These ports may be on the same module or separate modules.

5-10 Redundant-Link Configuration

Full Fault Detection

Full Fault Detection

Introduction

The DIGITAL MultiSwitch Hub 624T supports full fault detection. When the module’s ports are connected to the ports of another repeater that supports this feature, such as another DIGITAL MultiSwitch Hub 624T, failures are detected at either end of the receive or transmit link (Figure 5-4).

If the responder’s receive port detects a link failure, the responder signals the MCA.

This allows the MCA to disable the master primary port and enable the master secondary port.

Figure 5-4: Full Fault Detection Configuration

MultiSwitch Hub 624T

1

Tx

Rx

Tx

Rx

2

5

4

MultiSwitch Hub 624T

3

Tx

Rx

6

3

Tx

Rx

NPB-0797-97F

Redundant-Link Configuration 5-11

Full Fault Detection

4

5

6

2

3

Item

1

Description

Master Port Pair

Primary link (initially active).

Single responder ports (always enabled).

The master can detect a link failure here.

Secondary link (initially standby and disabled).

These ports may be on the same module or separate modules.

Fault Detection Comparison

Table 5-1 shows the difference in failure detection between partial fault detection and full fault detection.

Table 5-1: Comparison of Partial Fault Detection to Full Fault Detection

Then full fault detection ...

If a link failure occurs in the master port’s ...

TX Link

Then partial fault detection ...

RX Link

Does not detect the failure

Detects the failure

Detects the failure

Detects the failure

5-12 Redundant-Link Configuration

Recommendations for Redundant-Link Configuration

Recommendations for Redundant-Link Configuration

Introduction

The following recommendations should be considered when configuring the

DIGITAL MultiSwitch Hub 624T with redundant links:

Use responder ports (rather than nonresponder ports) whenever possible

If you use a combination of responder ports and nonresponder ports, assign the responder ports to the primary link and the nonresponder ports to the secondary link.

If possible, assign the remote ports (responder or nonresponder) to separate modules to ensure that one of the two remote ports is functional if a remote module fails.

Whenever possible, configure primary and secondary link cables into separate pathways to avoid a single point of failure.

Redundant-Link Configuration 5-13

Chapter 6

Module Management

Overview

Introduction

This chapter describes how to manage the DIGITAL MultiSwitch Hub 624T using clearVISN.

In This Chapter

Topic

What is clearVISN?

Requirements for Managing the Module

Managed Functions

Repeater Summary Window

Repeater Port Summary Window

Repeater Port Details Window

Repeater Security Summary Window

Repeater Security Intrusion Log Window

Dual-Port Redundancy Window

Dual-Port Redundancy Add Window

DIGITAL MultiSwitch 600 System Interconnect Guidelines

DEChub 900 MultiSwitch Configuration Guidelines

MIBs Supported by the DIGITAL MultiSwitch Hub 624T

6-18

6-19

6-21

6-22

6-23

6-25

6-6

6-8

6-11

6-15

Page

6-2

6-3

6-4

Module Management 6-1

What is clearVISN?

What is clearVISN?

clearVISN is an integrated family of software applications for managing a network using policy-based techniques. clearVISN manages DIGITAL networking products.

Each clearVISN application has a Graphical User Interface (GUI) and supports Simple

Network Management Protocol (SNMP).

The use of clearVISN is recommended to gain the full benefit of SNMP management, including backplane LAN management, on MultiSwitch 600 and DEChub 900 modules.

Use the clearVISN Stack Manager or clearVISN MultiChassis Manager (refer to the

clearVISN User’s Guide for a description of how to access online help) to manage each module in the DEChub 900 MultiSwitch.

MultiChassis Manager

The MultiChassis Manager manages the DEChub 90, the DIGITAL MultiStack 90

System, and the DIGITAL MultiSwitch 600 System, DEChub ONE, DEChub 900

MultiSwitch, GIGAswitch/FDDI, and GIGAswitch/ATM families of devices.

MultiChassis Manager displays a GUI menu detailing the actual configuration, and allows users to manage the modules and ports with point-and-click ease.

Stack Manager

The Stack Manager manages the DEChub 90, DIGITAL MultiStack 90, and DIGITAL

MultiSwitch 600 System. Stack Manager displays a GUI menu detailing the actual configuration, and allows users to manage the modules and ports with point-and-click ease.

6-2 Module Management

Requirements for Managing the Module

Requirements for Managing the Module

The following configurations are required for managing the DIGITAL MultiSwitch

Hub 624T in either a DIGITAL MultiSwitch 600 System or a DEChub 900

MultiSwitch.

Only one Stack Director is required to manage a stack. All other functional DIGITAL

MultiSwitch 600 System modules (such as the DIGITAL MultiSwitch Hub 624T) in the same stack may be powered by Stack Stations and will be managed by the Stack

Director.

DIGITAL MultiSwitch 600 System

To manage a DIGITAL MultiSwitch 600 System, you need the following components.

Stack Director configured with a IP address (see Part II)

• clearVISN Stack Manager or MultiChassis Manager Software Application

In-Band access to the Stack Director’s management MAC via the 10Base2 connection or an external connection to the management access port or Out-of-

Band OBM port using SLIP.

DEChub 900 MultiSwitch

To manage a DEChub 900 MultiSwitch, you need the following components.

DEChub 900 MultiSwitch configured with an IP address.

• clearVISN MultiChassis Manager

In-band access to the DEChub Management Agent via the IP services module, or

Out-of-Band (OBM) access via the OBM port using SLIP on the DEChub 900

MultiSwitch.

Module Management 6-3

Managed Functions

Managed Functions

clearVISN and DIGITAL MultiSwitch Hub 624T provide support for the following managed functions. The tables that follow list and define functions managed by the clearVISN management windows.

Port Control for the 24 fixed 10BaseT ports and the ports that populate the

Expansion slot; including

— Up to two 10Mb/s MM-10s for station connections or links to other stacks or hubs. The MM-10s include AUI, 10BaseFL, 10Base2, 10BaseT, and Reverse

AUI.

— A 10BaseT expansion port group that expands the DIGITAL MultiSwitch

Hub 624T to 36 ports and acts as a third port group.

Port-level intrusion and eavesdrop security.

Assignment of port groups to separate collision domains.

Assignment of port groups to the backplane of a MultiSwitch 600 or DEChub 900

MultiSwitch.

Hot-swapping of modules in a MultiSwitch 600 or DEChub 900 MultiSwitch.

Auto-discovery of stations connected to each managed port.

DownLine Upgrade of Firmware Revisions.

NOTE

In this chapter only, the DIGITAL MultiSwitch Hub 624T is referred to as a repeater. All Repeater windows apply to the DIGITAL MultiSwitch Hub 624T.

6-4 Module Management

Managed Functions

The following pages describe functions of these Repeater windows. This information is also available in clearVISN online help.

Function

Repeater Summary Window

Repeater Port Summary Window

Repeater Port Details Window

Repeater Security Summary Window

Repeater Security Intrusion Log Window

Dual-Port Redundancy Window

Dual-Port Redundancy Add Window

6-15

6-18

6-19

6-21

Page

6-6

6-8

6-11

Module Management 6-5

Repeater Summary Window

Repeater Summary Window

The clearVISN Repeater Summary Window displays repeater status in summary form.

Use this window to modify repeater management information and to monitor port information. The following table lists functions of the Repeater Summary Window.

Selection

Status

Partitioned Ports

Media

Unavail(able)

Ports

Transmit

Collisions

Port Table

LAN/Group

Description

Displays the current operational state of the repeater. The status is one of the following:

Disabled

Enabled

Fatal Failure

General Failure

Group Failure

Non-Fatal Failure

Port Failure

Repeater Failure

Initializing

Loading

Needs Program Load

OK

The number of repeater ports that are partitioned.

The number of repeater ports with media unavailable.

This status indicates link loss, low light, or no loopback.

The number of repeater transmission collisions for all ports.

A graphical representation of the status of a port and a list of Ethernet stations attached to the port.

The name of the LAN to which the port is connected or the logical group of which this port is a member.

6-6 Module Management

Selection

Port Status

Port Name

Offered Load

Collisions

Invalid Frames

Repeater Summary Window

Description

The color of the port connector icon indicates the operational, or current state, of the port. The status is determined by examining these three objects:

Port administration status

Port auto-partition state

MAU media availability

The user-assigned name of the port. A port name can have up to 80 characters and must be unique within the repeater. Valid characters are any printable character.

DIGITAL recommends setting the port name to reflect the repeater’s position in the hub chassis and the port’s number.

This monitor displays the offered load into this port as a percentage of the total bandwidth. The monitor display is a logarithmic scale (base 10).

This monitor displays the percentage of total transmission attempts to this port that result in collisions. The monitor display is a logarithmic scale (base 10).

This monitor displays the percentage of total transmission attempts into this port that are invalid frames. The monitor display is a logarithmic scale (base 10).

Module Management 6-7

Repeater Port Summary Window

Repeater Port Summary Window

The clearVISN Repeater Port Summary Window displays port status, performance, and security information in summary form. Use this window to monitor performance, security, and connected stations information on a per-port basis. The following table lists functions of the Repeater Port Summary Window.

Selection

Identification

(Port)

LAN Segment

Group

Status (900-Series

Port Summary)

Status

Description

Displays information identifying the repeater being managed.

The backplane LAN segment to which the port is connected.

The logical group of which this port is a member.

Displays the condition of the port.

Operational State

Media State

The color of the port connector icon indicates the operational, or current, state of the port. The status is determined by examining these three objects:

Port administration status

Port auto-partition state

MAU media availability

Indicates the state of the port. A port can be in one of the following operational states:

Operational

Not Operational

Not Present

The status of the MAU, or transceiver, and the cable, or link, that connects the MAU to the repeater. MAU and cable failures are indicated by this status. If the MAU is a link type (FOIRL, 10BASE-T, or 10BASE-F), then this status is equivalent to the link test fail state/low light function. For an AUI or a coaxial MAU including broadband, this status indicates whether or not a loopback is detected on the DI circuit.

6-8 Module Management

Repeater Port Summary Window

Selection

Auto-Partition

State

Partitions

Partition Reason

SQE Test Error

Performance

Units

Octets/Sec

Frames/Sec

Description

The auto-partitioned state flag. The flag can be in one of two states: Not Auto-partitioned or Auto-partitioned.

When a port is auto-partitioned, packets from the connected station are blocked. The repeater uses the autopartition algorithm to determine when a port should be auto-partitioned.

The number of times that the port has been partitioned.

The reason that the port was partitioned. If the port is not partitioned, this field displays “Not Partitioned.”

The following reasons can appear:

Unknown

Management Partitioned

Security Violation

Excessive Collisions

Jabber

No Carrier Loopback

Transmit Carrier Dropout

Forced Reconnection

Consecutive Collisions

The SQE test error. This MIB object indicates whether or not SQE test messages are being detected and what, if any, action is being taken. The network transceiver generates these messages to indicate that the collision detection circuitry is working. According to IEEE 802.3 specifications, all transceivers that are connected to repeaters must have this function turned off or disabled.

Displays performance statistics for the port.

Selects the units of statistical measurements on the performance monitors: Rate/sec or Percent.

This monitor displays either the octets per second on this port or the offered load on this port as a percentage of the total bandwidth. The monitor display is a logarithmic scale (base 10).

This monitor displays either the valid frames per second or the percentage of the total transmission attempts that are valid frames. The monitor display is a logarithmic scale (base 10).

Module Management 6-9

Repeater Port Summary Window

Selection

Collisions/Second

Errors/Second

Security

Eavesdrop

Prev(ention)

Description

This monitor displays either the collisions per second or the percentage of the total transmission attempts that result in collisions. The monitor display is a logarithmic scale (base 10).

This monitor displays either the errors per second or the percentage of the total transmission attempts that are invalid frames. The monitor display is a logarithmic scale

(base 10).

Displays security information about the port.

Indicates the eavesdrop mode to which the port is set:

Enabled or Disabled. When this function is enabled, the repeater restricts the port’s outgoing traffic to the authorized stations.

Indicates the intrusion mode to which the port is set.

Intrusion

Detect(ion)

Intrusions

Connected

Stations

IP Name

Total

Last Source

Address Seen

Lists the number of unauthorized transmissions on this port.

Displays information about the stations connected to this port.

The IP name of the connected station, if available.

The total number of stations connected to this port.

The last source address seen on this port.

6-10 Module Management

Repeater Port Details Window

Repeater Port Details Window

The clearVISN Repeater Port Details Window displays port counters, MAU information, and Port Administration status. Use this window to view counters and

MAU information and to enable or disable ports on a per-port basis. The following table lists functions of the Repeater Port Details Window.

Selection

Status (900-Series

Port Details)

Auto-Partition

State

Description

Displays the condition of the port.

Partitions

Partition Reason

Media State

The auto-partitioned state flag. The flag can be in one of two states: Not Auto-partitioned or Auto-partitioned. When a port is auto-partitioned, packets from the connected station are blocked. The repeater uses the auto-partition algorithm to determine when a port should be autopartitioned.

The number of times that the port has been partitioned.

The reason that the port was partitioned. If the port is not partitioned, this field displays “Not Partitioned.”

The following reasons can appear:

Unknown

Management Partitioned

Security Violation

Excessive Collisions

Jabber

No Carrier Loopback

Transmit Carrier Dropout

Forced Reconnection

Consecutive Collisions

The status of the MAU, or transceiver, and the cable, or link, that connects the MAU to the repeater. MAU and cable failures are indicated by this status. If the MAU is a link type FOIRL, 10BASE-F, or 10BASE-T this status is equivalent to the link test fail state/low light function. For an AUI, or a coaxial MAU including broadband, this status indicates whether or not loopback is detected on the DI circuit.

Module Management 6-11

Repeater Port Details Window

Selection

SQE Test Error

Description

The SQE test error. This MIB object indicates whether or not SQE test messages are being detected and what, if any, action is being taken. The network transceiver generates these messages to indicate that the collision detection circuitry is working. According to IEEE 802.3 specifications, all transceivers that are connected to repeaters must have this function turned off or disabled.

Displays the content of the port counters.

Counters

Readable Frames

The number of frames of valid frame length that have been received on this port. This counter is incremented by one for each frame received on this port whose OctetCount is greater than or equal to minFrameSize and less than or equal to maxFrameSize (refer to Section 4.4.2.1, IEEE

802.3 Std) and for which the FCSError and CollisionEvent signals are not asserted.

This statistic provides one of the parameters necessary for obtaining the packet error rate. The approximate minimum time for rollover of this counter is 80 hours.

Readable Bytes

The number of octets contained in valid frames that have been received on this port. This counter is incremented by

OctetCount for each frame received on this port that has been determined to be readable.

This statistic provides an indicator of the total data transferred. The approximate minimum time for rollover of this counter is 58 minutes.

Collisions

Total Errors

Frame Check

Sequence Errors

This counter is incremented by one for any CarrierEvent signal on any port for which the CollisionEvent signal on this port is asserted.

The total number of errors that have occurred on this port.

This counter is incremented by one for each frame received on this port with the FCSError signal asserted and the

FramingError and CollisionEvent signals not asserted, and whose OctetCount is greater than or equal to minFrameSize and less than or equal to maxFrameSize

(refer to Section 4.4.2.1, IEEE 802.3 Std).

6-12 Module Management

Repeater Port Details Window

Selection

Frame

Alignment

Errors

Frame Too Long

Short Events

Late Events

Very Long

Events

Description

This counter is incremented by one for each frame received on this port with the FCSError and FramingError signals asserted and CollisionEvent signal not asserted, and whose

OctetCount is greater than or equal to minFrameSize and less than or equal to maxFrameSize (refer to Section

4.4.2.1,IEEE 802.3 Std). If this counter is incremented, then the Frame Check Sequence Errors counter is not incremented for the same frame.

This counter is incremented by one for each frame received on this port whose OctetCount is greater than maxFrameSize (refer to Section 4.4.2.1, IEEE 802.3 Std).

If this counter is incremented, then neither the Frame

Alignment Errors counter nor the Frame Check Sequence

Errors counter is incremented for the frame.

This counter is incremented by one for each CarrierEvent on this port with ActivityDuration less than

ShortEventMaxTime. ShortEventMaxTime is greater than

74 bit times and less than 82 bit times. A bit time is equal to 100 nanoseconds. ShortEventMaxTime has tolerances included to provide for circuit losses between a conformance test point at the AUI and the measurement point within the state machine.

This counter is incremented by one for each CarrierEvent on this port in which the CollIn(X) variable changes to the value SQE (refer to Section 9.6.6.2, IEEE 802.3 Std) while the Activity Duration is greater than the

LateEventThreshold. Such a CarrierEvent is counted twice, as both a Collision and as a LateEvent.

This counter is incremented by one for each CarrierEvent on this port whose ActivityDuration is greater than the

MAU Jabber Lockup Protection timer TW3 (refer to

Sections 9.6.1 and 9.6.5, IEEE 802.3 Std). Other counters may be incremented as appropriate.

Module Management 6-13

Repeater Port Details Window

Selection

Data Rate

Mismatches

Runts

Auto-Partitions

MAU

Information

Media

Availability

Changes

Link Test

Administration

Status

Description

This counter is incremented by one for each frame received on this port that meets all of the following conditions:

The CollisionEvent signal is not asserted.

The ActivityDuration is greater than

ValidPacketMinTime.

The frequency (data rate) is detectably mismatched from the local transmit frequency. The exact degree of mismatch is vendor specific and is to be defined by the vendor for conformance testing.

This counter is incremented by one for each CarrierEvent on this port that meets one of the following two conditions.

Only one test need be made. The conditions are:

The ActivityDuration is greater than

ShortEventMaxTime and less than

ValidPacketMinTime, and the CollisionEvent signal is deasserted.

The OctetCount is less than 64, the ActivityDuration is greater than ShortEventMaxTime and the CollisionEvent signal is not asserted. ValidPacketMinTime is greater than or equal to 552 bit times and less than 565 bit times.

This counter is incremented by one for each time the repeater automatically partitions this port. The conditions that cause port partitioning are specified in the partition state machine in Section 9 of the IEEE 802.3 Std. They are not differentiated here.

Displays information about the repeater’s MAU characteristics.

The number of times that the repeater’s MAU mediaavailable object for this port leaves the available state.

This object is used to manage link type MAUs that implement a link test function (for example, 10BASE-T,

10BASE-F, and FOIRL). Setting this object to Enabled causes the MAU to turn on its link test function.

This object can be Enabled or Disabled, using the buttons.

Setting this object to Disabled causes the MAU to turn off its link test function.

6-14 Module Management

Repeater Security Summary Window

Repeater Security Summary Window

The clearVISN Repeater Security Summary Window displays repeater and port security information. Use this window to set up and manage security for the repeater and for individual repeater ports. The following table lists functions of the Repeater

Security Summary Window.

Selection

Port

Information

Port

Port Name

Group

LAN

Security Status

Select Port

Port/Group

Description

Displays information about the selected port. This box does not display current data until you select a particular port.

The port number as seen from the repeater front panel.

The name of the port.

The logical group for this port.

The name of the LAN to which the port is connected.

The port’s security status.

Use this information to select the repeater port or ports whose security functions you want to set up. You can select one port or all ports.

Allows you to select a port whose security functions will be modified when you click on OK or Apply.

Click on this button to select all ports.

All Front Panel

Ports

Security

Functions

Prevent

Eavesdropping

Use this information to set up security for the selected port or ports.

A port’s eavesdrop mode. There are two states:

Enabled--The level of security imposed in this mode depends on whether you designated authorized stations for the port.

Disabled--All packets received on all other ports are transmitted on this port.

Module Management 6-15

Repeater Security Summary Window

Selection

Intrusion Mode

Disabled

Pass

Unauthorized

Packets

Jam

Unauthorized

Packets

Disable Port On

Intrusion

Intrusions

Address

Learning

Learned

Stations

Learning Status

Description

The port’s intrusion mode. The port can be in one of four intrusion modes:

Disabled

Pass Unauthorized Packets

Jam Unauthorized Packets

Disable Port On Intrusion

When this mode is selected, the repeater allows unrestricted incoming traffic on the port.

When this mode is selected, the repeater allows unrestricted incoming traffic on the port but records all port violations in the Repeater Security Intrusions log.

Violations are defined as packets received from stations other than those displayed in the Authorized Stations list.

When this mode is selected on a port, the repeater jams any unauthorized packets received on the port before repeating those packets onto other repeater ports.

When this mode is selected on a port, the repeater disables the port whenever any unauthorized traffic is detected on the port. The port remains disabled until it is re-enabled using this application or other network management software.

The number of unauthorized packets received from this port.

Use this information to enable and disable address learning for a selected port and to create and modify the port’s

Authorized Stations list.

Lists the addresses learned by the port you selected in the

Select Port box and allows you to select addresses for the port’s Authorized Stations list.

This field displays one of the following address learning status values:

Active - Learning is enabled and active.

Full - Learning is enabled, but the number of entries in the Learned Stations list has reached the maximum allowed on the repeater.

Disabled - Learning is disabled. There may still be addresses in the list.

6-16 Module Management

Selection

Address

Authorization

Authorized

Stations

Address

Repeater Security Summary Window

Description

Displays the addresses of the authorized stations attached to a selected port and allows you to specify addresses to be added or removed from the repeater’s list of authorized addresses.

Displays the addresses of the authorized stations attached to a selected port.

Use this box to register the addresses of stations you plan to connect to this port or remove from this port. Stations using DECnet require two types of addresses: an Ethernet physical address and a DECnet physical address that is calculated using the Ethernet physical address.

Module Management 6-17

Repeater Security Intrusion Log Window

Repeater Security Intrusion Log Window

The clearVISN Repeater Security Intrusion Log Window displays the contents of repeater security violations logs. Use this window to display the intrusion log for the entire repeater or a particular repeater port.

When you open this window, the information displayed is determined by the context in which it is opened. If you access this window from the Repeater Port Summary window or from the Port Table in the Repeater Summary window, in which case you have already selected a port, this window displays security information for the selected port. The following table lists functions of the Repeater Security Intrusion Log

Window.

Selection Description

Intrusions

Displays a row of information about each security violation.

6-18 Module Management

Dual-Port Redundancy Window

Dual-Port Redundancy Window

The Dual-Port Redundancy Window displays summary information about ports that are configured as redundant master pairs or as responder pairs. This window is used to actually configure the ports. The following table lists functions of the Dual-Port

Redundancy Window.

Selection

Dual-Port

Redundancy

Link Name

Link Type

Master Mode

Description

Lists the repeater ports that are configured as redundant master pairs or as responder ports.

The user-assigned name of the link. Link names must be strings of 1 to 16 characters, and any printable characters are valid including a space.

This field indicates the type of port configuration, either

Master mode or Responder mode .

Designates a pair of repeater ports (primary and secondary) that control a redundant link. Because the remote ports, or responder ports, to which the master ports are connected must be on the same LAN or are otherwise bridged together, only one of the master ports may be enabled at a time. Responder mode designates a repeater port that is connected to either a master primary port or a master secondary port on another repeater.

When two repeater ports are initially configured for dualport redundancy, the primary port (master) is in the active state (transmitting and receiving data) and the secondary port (responder) is in the standby state (idle). In operation, the primary port communicates with its responder port until its MAU detects a link failure signal from the responder port. At this point, if the standby link is good, the primary port is disabled (switched to Standby state), the secondary port is enabled (switched to Active state), and the communication resumes over the secondary link. Should the secondary port detect a link failure, communication reverts back to the primary link, assuming it has recovered from its failure.

Master ports can also attach to normal repeater ports with partial redundancy. For example, master ports can attach to

DECrepeater 90FA and 90FL ports.

Module Management 6-19

Dual-Port Redundancy Window

Selection

Responder

Mode

Master Primary or Responder

LAN/Group

Master Primary or Responder

Port

Master

Secondary LAN/

Group

Master

Secondary Port

Link State

Changes

Select

Description

This mode designates ports that are connected to master mode ports. Responder ports are always enabled but are active only when their master port is active. A key function of the responder port, other than receiving and transmitting data, is to report link failures to the master port. When the master port detects a link failure, it causes the link to failover to the standby link. If the standby link is not available when the active link fails, the failover process waits until it is available. If the previously active link becomes available during this waiting period, the master returns to using it. Otherwise, the failover to the standby link takes place as soon as the standby link is good. By using failover, the highest utilization possible on a dualport redundant link is achieved.

The LAN to which the port is connected or the logical group of which the port is a member.

The number of the repeater port (for example 1, 2, and so on).

The LAN to which the port is connected or the logical group of which the port is a member.

The number of the repeater port (for example 1, 2, and so on).

The number of times the operational status of the primary, secondary, or responder port has changed between Active and Standby.

Click on this button to select a port for deletion.

6-20 Module Management

Dual-Port Redundancy Add Window

Dual-Port Redundancy Add Window

The Dual-Port Redundancy Add Window displays fields used to configure redundant port. The following table lists functions of the Dual-Port Redundancy Add Window.

Selection Description

Available Ports

A list of ports that have not been configured as redundant ports. Initially, this list contains all the ports on the repeater.

Configuration

Master Pair

Responder

Contains the buttons and fields used to configure a redundant port.

Click on this button to configure a pair of redundant ports.

Primary Port

Click on this button to configure a port as a responder port.

A responder port connects to either a Master Primary port or a Master Secondary port that is located on a different repeater.

This box identifies the primary port by number (for example, 3 or 4). The port must be selected from the list of ports in the Available Ports box.

Secondary Port

Responder Port

Link Name

This box identifies the secondary port by number (for example, 3 or 4). The port must be selected from the list of ports in the Available Ports box

Use this box to identify the responder port by number (for example, 3 or 4). The port identity is restricted to the list of ports in the Available Ports box.

Use this box to enter a name for the link. The user-assigned link name must be a string of 1 to 16 characters. Any printable characters are valid including a space.

Module Management 6-21

DIGITAL MultiSwitch 600 System Interconnect Guidelines

DIGITAL MultiSwitch 600 System Interconnect Guidelines

The DIGITAL MultiSwitch 600 System has one 10Base2 backplane LAN. The

10Base2 backplane LAN exists by default and cannot be deleted or renamed. You can create from one-to-six additional flexible Ethernet LANs.

You can configure DIGITAL MultiSwitch Hub 624T and DIGITAL MultiSwitch

612EX modules for use in the DIGITAL MultiSwitch 600 backplane, as explained in the following sections.

Using the DIGITAL MultiSwitch Hub 624T in a DIGITAL MultiSwitch 600

System

The DIGITAL MultiSwitch Hub 624T can operate as one collision domain, or be segmented into port groups.

A DIGITAL MultiSwitch Hub 624T with 24, 25, or 26 ports has two internal Ethernet

LANs. The module also has two port groups:

Port Group A, consisting of ports 1 through 12 and, if present, the MM-10 in slot

A of the Carrier Card

Port Group B, consisting of ports 13 through 24 and, if present, the MM-10 in slot

B of the Carrier Card

The module can accept an optional 12-port 10BaseT Expansion Port Group card, for a total of 36 ports. A 36-port DIGITAL MultiSwitch Hub 624T has three internal LANs and three port groups:

Port Group A, consisting of ports 1 through 12

Port Group B, consisting of ports 13 through 24

Port Group C, consisting of ports 25 through 36

Each port group of a DIGITAL MultiSwitch Hub 624T can connect to any, but not more than one, of the module’s internal LANs. Each internal LAN has a flexible

Ethernet backplane port that can connect to any one of the six DIGITAL MultiSwitch

600’s flexible Ethernet backplane LANs.

DIGITAL MultiSwitch Hub 624T modules have a 10Base2 backplane port that can connect to the 10Base2 backplane LAN of a DIGITAL MultiSwitch 600 System. Only one module port group at a time can connect to this 10Base2 backplane port.

6-22 Module Management

DEChub 900 MultiSwitch Configuration Guidelines

DEChub 900 MultiSwitch Configuration Guidelines

If you have two or more DECrepeater 90FS, DECrepeater 90TS, DIGITAL

MultiSwitch Hub 624T, or DIGITAL MultiSwitch 612EX modules in your hub and you want to connect them to a flexible Ethernet LAN segment, you must connect all of them to the same Ethernet flexible LAN segment.

NOTE

The Hub Manager will reject the connection, if you have connected a

DECrepeater 90FS, DECrepeater 90TS, DIGITAL MultiSwitch Hub 624T, or

DIGITAL MultiSwitch 612EX module to a backplane flexible LAN segment and you attempt to connect a different DECrepeater 90FS, DECrepeater 90TS,

DIGITAL MultiSwitch Hub 624T, or DIGITAL MultiSwitch 612EX module to another backplane flexible LAN segment.

You can configure DIGITAL MultiSwitch Hub 624T, DIGITAL MultiSwitch 612EX,

DECrepeater, access server, DECbridge, and DECswitch modules for use in the

DIGITAL MultiSwitch 900 backplane, as explained in the following sections.

Using the DIGITAL MultiSwitch Hub 624T in a DEChub 900 MultiSwitch

A DIGITAL MultiSwitch Hub 624T with 24, 25, or 26 ports has two internal Ethernet

LANs. The module also has two port groups:

Port Group A, consisting of ports 1 through 12 and, if present, the MM-10 in slot

A of the Carrier Card

Port Group B, consisting of ports 13 through 24 and, if present, the MM-10 in slot

B of the Carrier Card

The module can accept an optional 12-port 10BaseT Expansion Port Group card, for a total of 36 ports. A 36-port DIGITAL MultiSwitch Hub 624T has three internal LANs and three port groups:

Port Group A, consisting of ports 1 through 12

Port Group B, consisting of ports 13 through 24

Port Group C, consisting of ports 25 through 36

Each port group of a DIGITAL MultiSwitch Hub 624T can connect to any, but not more than one, of the module’s internal LANs.

Module Management 6-23

DEChub 900 MultiSwitch Configuration Guidelines

The flexible Ethernet backplane port can connect to any DEChub 900 MultiSwitch backplane flexible Ethernet LAN.

NOTES

Only the first of the internal LANs has a flexible Ethernet backplane port; the other internal LANs cannot be accessed outside of the module. (The first internal LAN is the top group in the clearVISN Port Switching window).

If the DEChub 900 MultiSwitch has DECrepeater 90TS, DECrepeater 90FS,

DIGITAL MultiSwitch 612EX, or other DIGITAL MultiSwitch Hub 624T modules connected on a backplane Ethernet LAN, the DIGITAL MultiSwitch

Hub 624T can connect only on that same Ethernet LAN.

DIGITAL MultiSwitch Hub 624T modules have a 10Base2 backplane port that can connect to the 10Base2 backplane LAN of a DEChub 900 MultiSwitch. Only one module port group at a time can connect to this 10Base2 backplane port.

6-24 Module Management

MIBs Supported by the DIGITAL MultiSwitch Hub 624T

MIBs Supported by the DIGITAL MultiSwitch Hub 624T

MIBs supported by the DIGITAL MultiSwitch Hub 624T are as follows.

MIB II (RFC 1213)

DEChub 900 Public Common MIB

Extended Repeater MIB (RFC)

DIGITAL Extended Repeater MIB

Internet Engineering Task Force (IETF) Repeater MIB (RFC 1516)

For information on how to access DIGITAL MIBs, follow the procedures in the

DIGITAL MultiSwitch Hub 624T Release Notes.

Module Management 6-25

Chapter 7

Removing a Module and Option Cards

Overview

This chapter describes how to remove a module and MM-10s from the DIGITAL

MultiSwitch 600 System.

In This Chapter

Topic Page

Removing a Module from the DIGITAL MultiSwitch 600 System

(Hot-Swappable)

7-2

Removing Modules from the DEChub 900 (Hot-Swappable)

Removing Cables from the 10BaseT Ports

7-4

7-6

Removing Cables from the MM-10 Ports

Removing Cables from the AUI MM-10 Port

Removing Cables from the Reverse AUI MM-10 Port

Removing Cables from the 10Base2 MM-10 Port

Removing Cables from the 10BaseFL MM-10 Port

Removing Cables from the 10BaseT (UTP/UTP Crossover)

MM-10 Port

Removing MM-10s from the Module

7-7

7-7

7-8

7-8

7-9

7-10

7-11

Removing the Carrier Card

Removing the 10BaseT Expansion Port Group

Replacing the Dust Cover on the DIGITAL MultiSwitch Hub 624T

7-12

7-13

7-14

Removing a Module and Option Cards 7-1

Removing a Module from the DIGITAL MultiSwitch 600 System (Hot-Swappable)

Removing a Module from the DIGITAL MultiSwitch 600

System (Hot-Swappable)

This section describes how to remove a module from the DIGITAL MultiSwitch 600

System on a hot-swap basis. You will need a flat-blade screwdriver for the removal.

NOTE

Hot-swapping is the removal or insertion of a module into either the DIGITAL

MultiSwitch 600 System or the DEChub 900 MultiSwitch without disrupting power to the unit. Do not simultaneously hot-swap more than one module.

Simultaneously inserting or removing more than one module can cause problems with the operation of other installed modules.

Complete the following steps to remove a module from the Stack Director (shown in illustration) or Stack Station as shown in Figure 7-1.

Figure 7-1: Removing the Module from a DIGITAL MultiSwitch 600

2

3

MultiSwitch 600

Stack Director

1

NPB-0593-96F

7-2 Removing a Module and Option Cards

Removing a Module from the DIGITAL MultiSwitch 600 System (Hot-Swappable)

Step

1

2

3

Action

Using a flat-blade screwdriver, loosen the slotted thumbscrew (1) on the Stack Director or Stack Station module by turning it counterclockwise.

Pull the top of the module (the end with the locking tab) (2) away from the Stack Director or Stack Station.

Unseat the module from the Stack Director or Stack Station (3).

Removing a Module and Option Cards 7-3

Removing Modules from the DEChub 900 (Hot-Swappable)

Removing Modules from the DEChub 900 (Hot-Swappable)

To remove the module from the DEChub 900, complete the following steps (see Figure

7-2).

NOTE

Hot-swapping is the removal or insertion of a module into either the DIGITAL

MultiSwitch 600 System or the DEChub 900 MultiSwitch without disrupting power to the unit. Do not simultaneously hot-swap more than one module.

Simultaneously inserting or removing more than one module can cause problems with the operation of modules.

Figure 7-2: Removing the Module from a DEChub 900

1

2

3

7-4 Removing a Module and Option Cards

NPG-0008-95F

Removing Modules from the DEChub 900 (Hot-Swappable)

Step

1

2

3

Action

Lift the release lever (1) located at the top of the DEChub 900 slot.

While holding up the release lever (2), pivot the module back on its bottom mounting tab (3).

Remove the module.

Removing a Module and Option Cards 7-5

Removing Cables from the 10BaseT Ports

Removing Cables from the 10BaseT Ports

Complete the following steps to remove 10BaseT cables as shown in Figure 7-3.

Figure 7-3: 10BaseT Cable Removal

B

11 x

12x

5x

6x

3

1

2

NPB-0759-96F

2

3

Step

1

Action

Push down on the release tab (1) and remove the connector (2) from the module’s 10BaseT port (3).

Remove the other end from the cable to an network device (PC or workstation), if needed.

Repeat steps 1 and 2 for additional 10BaseT connectors.

7-6 Removing a Module and Option Cards

Removing Cables from the MM-10 Ports

Removing Cables from the MM-10 Ports

This section describes how to remove cables from the MM-10.

Action . . .

Removing Cables from the AUI MM-10 Port

Removing Cables from the Reverse AUI MM-10 Port

Removing Cables from the 10Base2 MM-10 Port

Removing Cables from the 10BaseFL MM-10 Port

Removing Cables from the 10BaseT (UTP/UTP Crossover)

MM-10 Port

See Page . . .

7-7

7-8

7-8

7-9

7-10

Removing Cables from the AUI MM-10 Port

Complete the following steps to remove the AUI port cable from the AUI MM-10 as shown in Figure 7-4.

Figure 7-4: Removing AUI MM-10 Cables

2

B

12V

B

12V

A

12V

DLXAU-MA

A

12V

Step

1

2

DLXAU-MA

2

1

NPB-0760-96F

Action

Slide the AUI port connector latch to the unlocked position to the left.

Remove the MAU (1) or AUI cable (2) from the AUI port.

Removing a Module and Option Cards 7-7

Removing Cables from the MM-10 Ports

Removing Cables from the Reverse AUI MM-10 Port

Figure 7-5 shows how to remove the cable from the reverse AUI MM-10 and the following table describes how to remove the AUI port cable.

Figure 7-5: Removing Reverse AUI MM-10 Cables

B

12V

2

B

12V

A

12V

DLXRA-MA

1

NPB-0762-96F

Step

1

2

Action

Slide the latch on the AUI cable (1) to the unlocked position.

Remove the AUI cable from the reverse AUI port (2).

Removing Cables from the 10Base2 MM-10 Port

Complete the following steps to remove the 10Base2 cable from the 10Base2 MM-10s as shown in Figure 7-6.

Figure 7-6: Removing 10Base2 MM-10 Cable Connector

1

B

2

NPB-0763-96F

7-8 Removing a Module and Option Cards

Removing Cables from the MM-10 Ports

Step

1

Action

Turn the connector (1) one-quarter turn to the left until the connector unlocks.

Remove the 10Base2 connector from the BNC connector (2).

2

Removing Cables from the 10BaseFL MM-10 Port

Complete the following steps to remove the cables from the 10BaseFL MM-10 as shown in Figure 7-7.

WARNING

Some fiber-optic equipment can emit laser or infrared light that can injure your eyes. Never look into an optical fiber or connector port. Always assume the cable is connected to a light source.

Figure 7-7: Removing Fiber Optic MM-10 Cables

A

12V

B

12V

A

12V

Step

1

2

B

2 1

NPB-0761-96F

Action

Turn the connector counterclockwise to loosen the connector.

Remove the transmit cable connector (1) from the transmit port (2) and the receive cable connector from the receive port.

Removing a Module and Option Cards 7-9

Removing Cables from the MM-10 Ports

NOTES

The bend radius of any fiber-optic cable is 1.5 inches (3.8 cm) or greater.

To avoid optical power loss, do not touch the fiber ends.

Removing Cables from the 10BaseT (UTP/UTP Crossover) MM-10 Port

Complete the following steps to remove the UTP cables from the 10BaseT MM-10s as shown in Figure 7-8.

Figure 7-8: Removing UTP MMI Cables

Step

1

2

2

B

3 1

NPB-0764-96F

Action

Push the release tab (1) on the cable plug (2) to free the cable connector.

Remove the cable connector from the port (3).

7-10 Removing a Module and Option Cards

Removing MM-10s from the Module

Removing MM-10s from the Module

The MM-10s are hot swappable, therefore you do not need to power down the module.

CAUTION

Static electricity can damage modules and electronic components. DIGITAL recommends that you use a grounded antistatic wrist strap and a grounded work surface when handling any modules.

Complete the following steps to remove MM-10s from the module as shown in Figure

7-9.

Figure 7-9: Removing MM-10 Modular Media Interface Cards

2

1

B

A

NPB-0548-96F

Step

1

2

Action

Loosen the captive screws from the MM-10 on the front panel of the module.

Carefully pull out the MM-10 (1) along the entire length of the card guides (2).

Removing a Module and Option Cards 7-11

Removing the Carrier Card

Removing the Carrier Card

Complete the following steps to remove the Carrier Card as shown in Figure 7-10.

NOTE

Before you remove the DIGITAL MultiSwitch Hub 624T Carrier Card, make sure that the module has no power connected to it. The Carrier Card is not hot-

swappable.

Figure 7-10: Carrier Card Removal

2

1

A

12V

B

12V

B

B

12V

NPB-0550-96F

2

3

Step

1

Action

Make sure that power to the DIGITAL MultiSwitch Hub 624T is off by unplugging the module from its DIGITAL MultiSwitch 600 System or DEChub 900 MultiSwitch.

Loosen the four screws.

Carefully pull out the DIGITAL MultiSwitch Hub 624T Carrier Card

(1) along the entire length of the card guides (2).

7-12 Removing a Module and Option Cards

Removing the 10BaseT Expansion Port Group

Removing the 10BaseT Expansion Port Group

To remove the card, complete the following steps, which are illustrated by

Figure 7-11. A Phillips-head screwdriver is required.

NOTE

Before you remove the 10BaseT Expansion Port Group, make sure that the module has no power connected to it. The 10BaseT Expansion Port Group is not

hot-swappable.

Figure 7-11: 12-Port Expansion Group Card Removal

2

1

C

B

A

2

3

Step

1

NPB-0524-96F

Action

Make sure that power to the DIGITAL MultiSwitch Hub 624T is off by unplugging the module from the DIGITAL MultiSwitch 600

System or DEChub 900 MultiSwitch.

Loosen the four screws.

Carefully pull out the 12-Port Expansion Group card (1) along the entire length of the card guides (2).

Removing a Module and Option Cards 7-13

Replacing the Dust Cover on the DIGITAL MultiSwitch Hub 624T

Replacing the Dust Cover on the DIGITAL MultiSwitch Hub

624T

Figure 7-12 shows dust cover location and the table describes how to replace the cover(s).

Figure 7-12: Dust Cover Replacement

2

1

C

B

NPB-0765-96F

Step

1

2

Action

Align the four captive screws (1) with the threaded holes (2) in the module.

Tighten the captive screws.

7-14 Removing a Module and Option Cards

Part II

DIGITAL MultiSwitch 600 System

MultiSwitch 600

NPB-0664-96F

This illustration shows two DIGITAL MultiSwitch 600 System configurations.

Chapter 8

Stack Description

Overview

Introduction

The DIGITAL MultiSwitch 600 is a shared-to-switch workgroup system with modular components. This chapter describes the DIGITAL MultiSwitch 600 Stack Station and

Stack Director, which provide power, backplane interconnect and SNMP management to a DIGITAL MultiSwitch 600 system in a stack configuration. The DIGITAL

MultiSwitch 600-series functional modules (hubs and switches) which attach to the

Stack Station and Stack Director, are described in the documentation that accompanies the functional module.

In This Chapter

Topic

What is the DIGITAL MultiSwitch 600 System?

What is a Stack Director?

What is the Stack Station?

Page

8-2

8-6

8-12

Stack Description 8-1

What is the DIGITAL MultiSwitch 600 System?

What is the DIGITAL MultiSwitch 600 System?

The DIGITAL MultiSwitch 600 family is the first, integrated workgroup switching system for Ethernet and Fast Ethernet workgroup environments. The MultiSwitch 600

System provides scalability to increase bandwidth from shared-to-switched 10 Mb/s and 100 Mb/s modules in a scalable, integrated system, and offers customers the ability to:

Triple the bandwidth of each group-switching hub from 10 Mb/s to an aggregate of 30 Mb/s (DIGITAL MultiSwitch Hub 624T)

Microsegment and assign a total of 24 port-group switched LAN segments across up to 7 Ethernet backplane channels

Build up to 8 switches and hubs in stack — up to 288 shared Ethernet ports and

208 switched Ethernet ports using a single IP address in one single management domain

Build workgroups cost-effectively and easily with a state-of-the-art cable-free stack interconnection and port and media expansion capabilities

Manage and monitor the stack using SNMP management and RMON via clearVISN Stack Manager or MultiChassis Manager, a single, integrated PCbased manager

Cost-effective integration of high performance networks with the multitechnology, multi-gigabit DEChub 900 MultiSwitch

The key DIGITAL MultiSwitch 600 products include:

DIGITAL MultiSwitch Hub 624T — 24-port group switching 10BaseT hub module

DIGITAL MultiSwitch 612EX — 12-port 10-to-100 Mb/s Ethernet/Fast Ethernet switch module

DIGITAL MultiSwitch 624EX — 24-port 10-to-100 Mb/s Ethernet/Fast Ethernet switch module

DIGITAL MultiSwitch Hub 612TX — 12-port 100 Mb/s Fast Ethernet hub module

DIGITAL MultiSwitch 600 Stack Station — power supply for MultiSwitch hub and switch modules

DIGITAL MultiSwitch 600 Stack Director — power supply and SNMP manager for MultiSwitch 600 hub and switch modules

8-2 Stack Description

What is the DIGITAL MultiSwitch 600 System?

Built with the uniquely modular and flexible DEChub 900 MultiSwitch design, all

MultiSwitch 600 products are hot-swappable, operate and are managed in both the

MultiSwitch 600 System and DEChub 900 MultiSwitch.

The DIGITAL MultiSwitch 600 system is a modular stacking system for network devices. A DIGITAL MultiSwitch 600 network device consists of a DIGITAL

MultiSwitch 600-series functional module (hub or switch) attached to and interconnected with a Stack Station or Stack Director.

A DIGITAL MultiSwitch 600 stack can consist of 2-8 devices (stack levels) interconnected with the cable-free Stack Interconnect Card. The Stack Interconnect

Card provides the ability to create a stack backplane, which can be configured into a management channel and several internal LAN channels.

Figure 8-1 shows a DIGITAL MultiSwitch 600 stack front view (A) and back view

(B). One Stack Director (1) and Seven Stack Stations (2) are shown mounted on a mounting tray (3). The DIGITAL MultiSwitch 600-series functional modules needed to create a stackable device are represented as phantom boxes (4) in the illustration.

The DIGITAL MultiSwitch 600 system can serve as a managed or as an unmanaged stack:

A managed stack includes one Stack Director on the bottom of the stack and up to seven Stack Stations. The Stack Director contains the SNMP management agent for the stack and controls the stack backplane.

An unmanaged stack can include up to eight Stack Stations without a Stack

Director. There is no access to the backplane in an unmanaged stack.

DIGITAL recommends that a mounting tray be used with stacks of more than one level. The mounting tray provides stability to the stack when hot-swapping functional modules in the lower levels of the stack. The mounting tray is included with the Stack

Director, or may be purchased separately. Refer to Ordering Options in Appendix D for the order part number.

Stack Description 8-3

What is the DIGITAL MultiSwitch 600 System?

Figure 8-1: Typical DIGITAL MultiSwitch 600 Configuration

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Director

2

1

B

A

3

2

1

4

3

NPB-0658-96F

8-4 Stack Description

What is the DIGITAL MultiSwitch 600 System?

DIGITAL MultiSwitch 600 Features

The DIGITAL MultiSwitch 600 system includes the following features:

Modular architecture.

Choice of 10 Mb/s and 100 Mb/s hub and switches integrated as single SNMP management domain.

Cable-free stack interconnect for seven internal LAN and management channels.

An ability to create a stack of up to eight network devices.

Functional modules are hot-swappable to ensure network uptime and facilitate network changes.

Only one Stack Director that contains SNMP management agent with one IP address is needed to manage a stack.

Support for four RMON groups.

Modular Media Interface (MMI) and port expansion options, specific to the functional modules.

Rack mountable

The following sections describe the Stack Director and the Stack Station. Functional modules are described in their associated documentation.

Stack Description 8-5

What is a Stack Director?

What is a Stack Director?

The Stack Director provides power to the attached functional module and contains the

SNMP agent for a DIGITAL MultiSwitch 600 stack. The Stack Director communicates with the functional module at each level of the stack and controls the stack backplane resources. Only one Stack Director can be installed in a DIGITAL

MultiSwitch 600 stack. The Stack Director must be located at the bottom of the stack.

8-6 Stack Description

What is a Stack Director?

Stack Director Features

The Stack Director includes the following features:

A built-in SNMP Agent that manages up to eight functional modules as a single domain using a single IP address within a stack.

Cable-free stack interconnect slot on the Stack Director.

Manages up to seven internal Ethernet LAN channels for seven segments.

Hot swap autosensing informs the Stack Director when a functional module is inserted or removed from the stack.

Backplane Auto Healing restores backplane connections for a re-inserted functional module of the same type as previously removed.

In-band management communications through a module connection or a direct connection to a UTP/ScTP 10BaseT or 10Base2 port.

Autodetect capabilities automatically select the in-band management port.

Out-of-band management via SLIP.

A serial setup port to setup and configure the Stack Director and functional modules in the stack.

Load services which allow you to upgrade firmware of functional modules in the stack using the TFTP protocol.

Support for the BootP protocol for IP address configuration.

LEDs for determining the status of the stack.

Alarm and Event capability to monitor functional modules in the stack and report events to an NMS when thresholds are reached.

Ethernet Statistics and History information (on the in-band management port) on functional modules in the stack.

Temperature sensor and thermal shutdown protection.

Rack mountable.

Stack Description 8-7

What is a Stack Director?

Supported MIBs

The Stack Director supports the following Management Information Bases (MIBs):

MIB-II (RFC 1213)

RMON Alarms and Events (RFC 1757)

Ethernet MIB (RFC 1643)

DIGITAL Chassis MIB

DIGITAL Public Common MIB

Management Agent Module Private MIB

8-8 Stack Description

What is a Stack Director?

Stack Director Front Panel

Table 8-1 describes the front panel components on the Stack Director and Figure 8-2 shows their location. For detailed information about the LEDs, refer to Appendix A.

Figure 8-2: Stack Director Front Panel Components

13 11 10 7 5 2

MultiSwitch 600

Stack Director

1 2 3 4 5 6 7 8

OBM

15 14 12 9 8 6

4 3 1

NPB-0684-96F

Table 8-1: Stack Director Front Panel Component Descriptions

Item

1

2

Icon Name

Slotted

Thumbscrew

FRU OK LED

Description

Locks the functional module and Stack

Director together.

Lights when the Stack Director passed self-test.

3

Power OK

LED

Lights when the Stack Director has sufficient power.

4

5

6

Setup Port

OBM Port

OBM Port LED

A port to connect a terminal and configure the attached functional module. Can also be used to configure other functional modules in a managed stack.

An RS-232 port for out-of-band management (OBM) communication.

When on, SLIP is available through this interface. When blinking, there is

SLIP activity on the port.

Stack Description 8-9

What is a Stack Director?

Table 8-1: Stack Director Front Panel Component Descriptions

Item

7

8

Icon Name

10Base2 Port

10Base2 Port

Status LED

Description

A10Base2 port for connecting to the internal 10Base2 network of the

DIGITAL MultiSwitch 600. This port can also be used for in-band management. This port must be externally terminated if it is not used.

A T-connector can not be used on this port.

The port is available and can be connected to an operational LAN.

9

10

11

Network

Activity LED

Management

Access Port

Indicates network traffic on the management access or the 10Base2 ports.

A UTP/ScTP port dedicated to in-band management. This is the default port for management if connected to an active 10BaseT link.

The port is available and can be connected to an operational LAN.

12

13

Management

Access Status

LED

Stack Level

Management

LEDs

Reserved

The module at this level is functional and is communicating with the Stack

Director.

Reserved

14

15

Reserved

IEC Power

Connector

Reserved

The input connector to the unit’s power supply.

8-10 Stack Description

What is a Stack Director?

Stack Director Back Panel

Table 8-2 describes the back panel components on the Stack Director and Figure 8-3 show their location. For detailed information about the LEDs, refer to Appendix A.

Figure 8-3: Stack Director Back Panel Components

1 2 3

NPB-0463-96F

Table 8-2: Stack Director Rear Panel Component Descriptions

Item

1

2

3

Name

Clearance Hole

48-pin

Connector

Locking

Receptacle

Description

Allows insertion of functional module locking tab.

Enables signaling between the functional module and Stack Director.

Secures the functional module to the Stack

Director.

Stack Description 8-11

What is the Stack Station?

What is the Stack Station?

The Stack Station provides power to the attached functional module and extends the internal management channel and LAN channels one level for a managed DIGITAL

MultiSwitch 600 stack. In a managed stack an attached functional module can be managed only if a Stack Director is included at the bottom of the stack and is interconnected. Figure 8-4 and Figure 8-5 show the Stack Station Front and Back

Panels.

Stack Station Features

The Stack Station includes the following features:

Provides power to the attached functional module.

Hot swap circuitry for functional modules.

A serial setup port to setup and configure the functional module in an unmanaged stack.

Stack interconnect slot on the top and bottom for cable-free stack interconnect card.

8-12 Stack Description

What is the Stack Station?

Stack Station Front Panel

Table 8-3 describes the front panel components on the Stack Station and Figure shows their location. For detailed information about the LEDs, refer to Appendix A.

Figure 8-4: Stack Station Front Panel Components

3

MultiSwitch 600

Stack Station

5 4 2 1

NPB-0464-96F

Table 8-3: Stack Station Front Panel Component Descriptions

Item

1

2

Icon Name

Slotted

Thumbscrew

Power OK

LED

Description

Locks the functional module and the

Stack Station together.

Indicates the Stack Station has sufficient power.

3

4

5

Setup Port A port to connect a terminal and configure the attached functional module.

Note: This port is only active when the stack does not contain a Stack

Director.

Setup Port LED Indicates the setup port is active.

IEC Power

Connector

The input connector to the unit’s power supply.

Stack Description 8-13

What is the Stack Station?

Stack Station Back Panel

Table 8-4 describes the back panel components on the Stack Station and Figure 8-5 shows their location. For detailed information about the LEDs, refer to Appendix A.

Figure 8-5: Stack Station Back Panel Components

1 2 3

NPB-0463-96F

Table 8-4: Stack Station Back Panel Component Descriptions

Item

1

2

3

Name

Clearance Hole

48-pin

Connector

Locking

Receptacle

Description

Allows insertion of a functional module locking tab.

Enables signaling between the functional module and the Stack Station.

Secures the functional module to the Stack Station

8-14 Stack Description

Chapter 9

Assembling a Stack

Overview

Introduction

This chapter describes how to assemble a DIGITAL MultiSwitch 600 stack.

In This Chapter

Topic

Planning the Configuration

Page

9-2

Building a DIGITAL MultiSwitch 600 Stack 9-4

Task 1: Securing a Stack Director or Stack Station to Mounting Tray 9-4

Task 2: Securing the Mounting Tray to the Rack Mount 9-7

Task 3: Inserting the Stack Interconnect Card and Functional Module 9-9

Task 4: Attaching the Next Level in the Stack

Task 5: Cabling the Stack Director and Stack Station

9-10

9-12

Task 6: Connecting Power

Task 7: Adding a Stack Level after Initial Installation

9-15

9-17

Assembling a Stack 9-1

Planning the Configuration

Planning the Configuration

This section discusses considerations you should take into account when planning the

DIGITAL MultiSwitch 600’s configuration.

Planning Considerations

Keep the following in mind when planning your configuration:

A Stack Director is required to manage a DIGITAL MultiSwitch 600 system. In a managed DIGITAL MultiSwitch 600 system, the Stack Director must be the bottom level of the stack.

A DIGITAL MultiSwitch 600 system can have a maximum of eight DIGITAL

MultiSwitch 600-series functional modules.

A stack can contain any combination of DIGITAL MultiSwitch 600-series functional modules (Hubs and Switches).

DIGITAL MultiSwitch 600-series functional modules are hot-swappable in the

DIGITAL MultiSwitch 600 system.

DIGITAL recommends that all configurations use the mounting tray for stability.

The tray is supplied with the Stack Director. It can also be ordered separately.

Refer to Appendix D for the order part number.

The mounting tray is required for rack mounting.

When you are using the mounting tray, the first step in building a stack is to attach the Stack Director or a Stack Station to the mounting tray.

Install the modular media interfaces (MMI) in the DIGITAL MultiSwitch 600series functional modules before you install the functional modules in the

DIGITAL MultiSwitch 600 Stack.

There are three types of configurations: Standard 19-inch rack mount (Figure 9-

3), relay rack mount (Figure 9-4), and table top (Figure 9-10).

9-2 Assembling a Stack

Planning the Configuration

Cable Restrictions

The 10Base2 port on the Stack Director can be used to extend the internal 10Base2

LAN channel of the MultiSwitch 600 system. An external 10Base2 segment attached to the 10Base2 port can be a maximum of 120 meters with a maximum 15 stations or nodes attached. A T-connector is not allowed on the Stack Director’s 10Base2 port. If you want to connect two MultiSwitch 600 systems together with a 10Base2 segment, they must be at each end of the segment. For example, you can use this configuration: stack — node — node— node — stack but you cannot use this configuration: stack — node — node— stack — node

Because each MultiSwitch 600 stack director is the electrical equivalent of 65 meters of cable, the 10Base2 cable between the two MultiSwitch 600 systems can not be greater that 55 meters.

CAUTION

Always make sure this unit is adequately grounded. Do not connect more than five

Stack Stations into a single power strip unless the power strip is protected by a

GFCI (Ground Fault Circuit Interrupt) device.

Assembling a Stack 9-3

Building a DIGITAL MultiSwitch 600 Stack

Building a DIGITAL MultiSwitch 600 Stack

To build a managed stack, complete the tasks in this section. You will need Phillipshead and flat-blade screwdrivers for the installation.

Task 1: Securing a Stack Director or Stack Station to Mounting Tray

DIGITAL recommends that a mounting tray be used with stacks of more than one level. The mounting tray provides stability to the stack when hot swapping functional modules in the lower levels. This tray is supplied with the Stack Director and can be ordered separately. Refer to Appendix E for the part number.

NOTE

The Stack Director must be at the bottom of the stack (on the mounting tray) for management. If you are building an unmanaged stack, install a Stack Station on the mounting tray.

CAUTION

Static electricity can damage modules and electronic components. It is recommended that you use a grounded antistatic wrist strap and a grounded work surface when handling any circuit cards.

9-4 Assembling a Stack

Building a DIGITAL MultiSwitch 600 Stack

Securing a Stack Director to Mounting Tray

To attach a Stack Director to the tray, perform the procedure in the following table.

Figure 9-1 shows installation details.

Figure 9-1: Stack Director Mounting Tray Attachment

5

6

3

Step

1

2

3

1

2

4

NPB-0739-96F

Action

Align the holes on the bottom of the Stack Director with the mounting holes on top of the tray (Figure 9-1).

Mounting holes:

For desk top configuration, use any one of the three sets of two mounting holes (4), (5), and (6) to mount the Stack Director on the mounting tray.

For 19" rack mount configuration (for hot-swapping modules),

use the set of holes closest to the edge of the tray (6).

For relay rack configuration, use the mounting holes farthest from the edge of the tray (4).Attach mounting tray to relay rack using two front angle brackets (3) and using two # 6 mounting screws (1).

Secure the Stack Director onto the tray using the two 6-32 machine screws (2).

Assembling a Stack 9-5

Building a DIGITAL MultiSwitch 600 Stack

Securing a Stack Station to Mounting Tray

To attach a Stack Station to the tray, perform the procedure in the following table.

Figure 9-2 shows installation details.

Figure 9-2: Stack Station Mounting Tray Attachment

7

5

6

MultiSwitch 600

Stack Station

3

Step

1

2

3

4

1

7

2

4

NPB-0741-96F

Action

Install the mounting plugs to the bottom of the Stack Station (7).

Align the holes on the bottom of the Stack Station with the mounting holes on top of the tray (Figure 9-2).

Mounting holes:

For desk top configuration, use any one of the three sets of two mounting holes (4), (5), and (6) to mount the Stack Station on the mounting tray.

For 19" rack mount configuration (for hot-swapping modules),

use the set of holes closest to the edge of the tray (6).

For relay rack configuration, use the mounting holes farthest from the edge of the tray (4). Attach mounting tray to relay rack using two front angle brackets (3) and using two # 6 mounting screws (1).

Secure the Stack Station onto the tray using the two 6-32 machine screws (2).

9-6 Assembling a Stack

Building a DIGITAL MultiSwitch 600 Stack

Task 2: Securing the Mounting Tray to the Rack Mount

Figure 9-3 shows a standard 19-inch rack mount configuration and Figure 9-4 shows a relay rack mount configuration. Tables following figures describe the procedures.

Figure 9-3: Standard 19" Rack Mount Configuration

MultiSwitch 612EX

MultiSwitch 612EX

MultiSwitch 612EX

A

A

B

B

C

2

1

Step

1

2

C

B

A

NPB-0740-96F

Action

Secure the mounting flange (1) on the tray to the mounting rails of the standard 19" rack using the mounting screws.

Attach the cable harness bracket (2) and office attachment connectors A,

B and C.

Assembling a Stack 9-7

Building a DIGITAL MultiSwitch 600 Stack

Figure 9-4: Relay Rack Mount Configuration

MultiSwitch 612EX

MultiSwitch 612EX

MultiSwitch 612EX

A

A

B

B

C

2

1

A

B

C

NPB-0725-96F

Step

1

2

Action

Attach the mounting tray to the rack (1) using the four 10-32 screws and

U-nuts (if needed).

Attach the cable harness bracket (see Figure 9-4) (2) and office attachment connectors A, B and C.

9-8 Assembling a Stack

Building a DIGITAL MultiSwitch 600 Stack

Task 3: Inserting the Stack Interconnect Card and Functional Module

A Stack Interconnect Card is located in each box that contains a Stack Director or a

Stack Station. To insert the Stack Interconnect Card, perform the following procedure.

Figure 9-5 shows installation details.

Figure 9-5: Stack Interconnect Card Attachment

5

2

3

4

4

6

MultiSwitch 600

Stack Director

3

4

5

6

Step

1

2

1

3

NPB-0665-96F

Action

Remove the dust cap (1) from the vertical connector on the Stack

Director.

Holding the Stack Interconnect Card by its sides (2), place it into the vertical connector.

Note: The Stack Interconnect Card is notched so that it will be inserted into the vertical connector properly. Align the notch in the card with the corresponding key in the connector which is identified by the line next to the connector slot.

Press down on the Stack Interconnect Card until it is fully seated being careful not to damage the strip metal gaskets (copper fingerstocks).

Insert and tighten wing nuts (3). These are placed at offset locations indicated by the wing guide symbol. When fully seated, the wing nuts must be within wing guides.

Install pylons (4) if they are not already installed. Pylons are normally installed in the factory.

Attach a functional module (5) to the Stack Director (See appropriate functional module Installation and Configuration manual for details).

Assembling a Stack 9-9

Building a DIGITAL MultiSwitch 600 Stack

Task 4: Attaching the Next Level in the Stack

To remove the mounting plugs, perform the following step. See Figure 9-6.

Figure 9-6: Mounting Plug Location

1

MultiSwitch 600

Stack Director

1

Step

1

NPB-0734-96F

Action

Prior to seating the next level’s Stack Station on the previous level, remove the mounting plugs (1), if present (Figure 9-6).

9-10 Assembling a Stack

Building a DIGITAL MultiSwitch 600 Stack

To add a second level to a stack, perform the following steps. Figure 9-7 illustrates installation details.

Figure 9-7: Next Stack Station Attachment

2

3

MultiSwitch 600

Stack Station

5

6

2

3

4

Step

1

MultiSwitch 600

Stack Director

1

3

NPB-0660-96F

Action

On the previously installed level, align the wings on the wing nuts (1) within the wing guide symbol on the Stack Station or the Stack Director

(See Figure 9-5 for wing guide symbol location.)

Align the alignment pylons (3).

Press down on the corners of the Stack Station until it snaps into place.

Insert and finger tighten two wing nuts (2) to the Stack Station. Align the wings on the wing nuts within the wing guide on the Stack Station.

Attach a functional module to the Stack Station (See appropriate functional module Installation and Configuration manual).

To continue adding levels to the stack, repeat steps 1 through 5 of this task.

Note: The Stack Station at the top of the stack should have the dust cap installed on its vertical slot connector.

Assembling a Stack 9-11

Building a DIGITAL MultiSwitch 600 Stack

Task 5: Cabling the Stack Director and Stack Station

Figure 9-8 shows the Stack Director interface ports.

Figure 9-8: Stack Director Port Connections

4 3 2 1

MultiSwitch 600

Stack Director

1 2 3 4 5 6 7 8

OBM

NPB-0512-96F

The setup port (1) on the Stack Director is used to set initial configuration parameters, including the assignment of an IP address for the stack. It is also used to perform basic management operations such as: resetting the functional module, upgrading the functional module and redirecting to another functional module for setup operations.

Use the OBM port (2) on the Stack Director for out-of-band management.

Use the 10Base2 port (3) on the Stack Director to extend the internal 10Base2 LAN channel of the MultiSwitch 600 system. The 10Base2 cable must be plugged directly into the Stack Director BNC 10Base2 port connector. A T-connector can not be used.

If you do not extend the internal 10Base2 LAN channel, you must terminate the channel (3) using an H8225 50-ohm terminator supplied.

Use the management access port (4) on the Stack Director to redirect the SNMP management agent from the internal 10Base2 assignment to this port. A network management station can be connected directly to this port or this port can be cabled to another network segment.

NOTE

If a 10BaseT cable is attached to the management access port, and a 10Base2 cable is attached to the 10Base2 port, the 10BaseT port will be utilized by the Stack

Director and the 10Base2 port will be ignored. However, data is still passed on the

10Base2 segment for use by other stations.

9-12 Assembling a Stack

Building a DIGITAL MultiSwitch 600 Stack

Figure 9-9 shows the Stack Station interface port.

Figure 9-9: Stack Station Port Connection

MultiSwitch 600

Stack Station

1

NPB-0686-96F

The setup port on the Stack Station (1) is used to set initial configuration parameters in an unmanaged stack.

Refer to Appendix B for the pin assignments for the ports, cables and adapters.

Setup Procedures

To connect and setup the Stack Director and Stack Station ports, follow the procedure in the following table.

Step

1

Action

Each setup port uses a standard 8-pin MJ connector. To connect a setup device (terminal or PC) to the setup port, use the following cables and adapters:

If the device connecting to Use this cable With this adapter the setup port is:

A PC with a 9-pin D-Sub BN24H-xx

1

H8571-J communications port

A terminal with a 25-pin BN24H-xx

1

H8575-A

D-Sub connector

A terminal with a 6-pin MMJ BN24H-xx-X

1, 2

Not required connector

1

xx indicates cable length in meters.

2 this is a crosswired cable.

Assembling a Stack 9-13

Building a DIGITAL MultiSwitch 600 Stack

Step

2

3

4

5

Action

Configure the setup port device (terminal or PC) as follows:

9600 baud

8 bits

no parity

1 stop bit

Connect a modem or access service to the Stack Director OBM port using a 9-pin D-sub connector. See Appendix B for pin assignments.

Connect the Stack Director 10Base2 port to a 10Base2 cable with a BNC connector. If you are not using this port, you MUST attach a 50-ohm terminator (H8225). See Appendix B for pin assignments.

Connect the Stack Director Management Access port using a straightthrough cable with an 8-pin MJ port connector. See Appendix B for pin assignments.

9-14 Assembling a Stack

Building a DIGITAL MultiSwitch 600 Stack

Task 6: Connecting Power

The Stack Director and each Stack Station has its own power supply. This requires the connection of an AC power line cord to each IEC power connector.

CAUTION

Always make sure this unit is adequately grounded. Do not connect more than five

Stack Stations into a single power strip unless the power strip is protected by a

GFCI (Ground Fault Circuit Interrupt) device.

To connect the power supplies, follow the procedure in the following table. Figure 9-

10 shows their location.

Figure 9-10: IEC Power Connector Locations

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Director

1

2

3

4

5

NPB-0662-96F

Assembling a Stack 9-15

Building a DIGITAL MultiSwitch 600 Stack

Step

1

2

Action

Connect the supplied AC line cord to the IEC power connector (1) on each Stack Station. Then, connect each AC line cord into an AC outlet or power strip.

The following states occur:

The Stack Station Power OK LED should be on. Refer to Stack

Station Front Panel on page 8-13.

Connect an AC line cord into the IEC power connector of the Stack

Director (at the bottom of the stack) and into an AC outlet or power strip.

The following states occur:

The Stack Director Power OK LED should be on. Refer to Stack

Director Front Panel on page 8-9.

9-16 Assembling a Stack

Building a DIGITAL MultiSwitch 600 Stack

Task 7: Adding a Stack Level after Initial Installation

To add a level to a stack after the initial installation, perform the procedure in the following table. Figure 9-6 and Figure 9-7 illustrate installation details.

NOTE

DIGITAL recommends that a stack level not be removed or added to a live stack.

If you must remove or add a stack level, the stack must be powered down.

5

6

7

3

4

Step

1

2

Action

If available, use clearVISN Recovery Manager to backup current settings for each device (including the Stack Director) on the stack.

Remove power from every level. Refer to Chapter 11 Task 1: Removing

Power Cords and Cables.

Remove the dust cap from the vertical connector on the top level Stack

Station or Stack Director.

Perform steps 1 through 5 of Task 4: Attaching the Next Level in the

Stack

Note: Inserting a stack interconnect card in a live stack will disrupt the backplane configuration. Performing step 8 re-establishes the configuration.

Repeat steps 3 and 4 as needed.

Replace the dust cap in the vertical connector slot on the top level remaining in the stack.

Perform Task 5: Cabling the Stack Director and Stack Station and Task

6: Connecting Power.

Assembling a Stack 9-17

Building a DIGITAL MultiSwitch 600 Stack

Step

8

Action

If available, use clearVISN Recovery Manager to restore settings for each device on the stack that may have lost its settings.

Functional modules that are in the same slot when the stack is powered up as they were when the stack was powered down will be automatically reconfigured with their previous backplane settings by the Stack

Director.

Functional modules that are not in the same slot, but are the same type

(that is DIGITAL MultiSwitch 612EX, DIGITAL MultiSwitch Hub

624T, etc.) as the module that was previously in the slot, will be reconfigured with the backplane settings used by the previous module.

However, Port Switch group configuration is saved in the non-volatile memory of the DIGITAL MultiSwitch Hub 624T, and thus stays with the module, not the slot.

For example, if you have a stack with slot 2 and slot 3 each containing a DIGITAL MultiSwitch Hub 624T, and the slot 2 level is removed and the DIGITAL MultiSwitch Hub 624T formerly in slot 3 is now in slot 2, it will be reconfigured with its own Port Switch groups but with the backplane settings previously used for slot 2.

Functional modules that are not the same type as the module previously in the slot will not be automatically configured.

9-18 Assembling a Stack

Chapter 10

Managing a Stack

Overview

Introduction

This chapter describes how to manage the DIGITAL MultiSwitch 600 system.

In This Chapter

Topic

In-Band and Out-of-Band Management

Connecting to a Network Management Station

SNMP Management Applications

Backplane Auto Healing

Installation Menu Introduction

Installation Menu Description

Page

10-2

10-3

10-4

10-5

10-6

10-7

Managing a Stack 10-1

In-Band and Out-of-Band Management

In-Band and Out-of-Band Management

The DIGITAL MultiSwitch 600 system can be managed through in-band management or out-of-band SNMP management.

To utilize SNMP management for a single device or for a stack, you need one Stack

Director configured with an in-band or out-of-band IP address (or both).

Stacks may also be unmanaged. When used as unmanaged single devices or unmanaged stacks, there is no connection available to the stack backplane. The interconnect riser card may or may not be used, but it has no functional benefit in the unmanaged configuration.

Some control parameters are available to the network manager, even on unmanaged devices. These parameters can be accessed via a local connection to the device’s setup port.

10-2 Managing a Stack

Connecting to a Network Management Station

Connecting to a Network Management Station

The Stack Director communicates with a network management station (NMS) via its

SNMP management agent. The channel between the Stack Director’s SNMP management and the NMS is defined by a combination of the user-defined IP address and the internal MAC (media access control) facility.

The NMS can access the MAC in the following ways:

Through the 10Base2 LAN channel. The Stack Director assigns the stack’s

10Base2 LAN channel to the MAC as its default connection. The NMS must reside on the Ethernet LAN segment that has access to this 10Base2 LAN channel.

Or, the NMS can be attached to a switch or hub port that has access to the 10Base2 channel; in this case the NMS must have switched access to the 10Base2 channel.

Connect the NMS directly to the BNC 10Base2 port on the rear of the Stack

Director.

Connect the NMS directly to the 8-pin MJ 10BaseT management access port on the rear of the Stack Director. A valid connection to the management access port automatically reassigns the internal MAC to this port.

Connect an UTP cable to the management access port and a LAN segment where the NMS resides. A valid connection to the management access port automatically reassigns the internal MAC to this port.

Note that using the UTP management access port precludes the use of the 10Base2

LAN segment for management traffic. However, the 10Base2 LAN segment is still active for use by other stations.

For out-of-band management, use the 9-pin OBM port on the rear of the Stack

Director to connect to the NMS. The OBM port is a serial communications port that uses SLIP to communicate with an NMS.

Managing a Stack 10-3

SNMP Management Applications

SNMP Management Applications

Any standards-based SNMP management application can manage the DIGITAL

MultiSwitch 600 system. However, to gain full benefit from the internal stack backplane, you should use the clearVISN Stack Manager or MultiChassis Manager applications. These applications provide an intuitive graphical user interface (GUI), which enables the full benefit of point and click management.

Other benefits of SNMP management include:

Assignment of switch and hub ports to the stack backplane.

Definition of up to seven 10 Mb/s Ethernet backplane channels.

Auto-restoration of backplane connections in the event a functional module is hotswapped and replaced with the same module or a same type module.

The Stack Director’s setup port enables configuration, reset, and downline upgrade features from a locally attached terminal or terminal emulator. Except for the assignment of an IP address, the functions are also available through clearVISN applications.

The Stack Director’s setup port menus are described in the following section.

10-4 Managing a Stack

Backplane Auto Healing

Backplane Auto Healing

Part of the installation process for a managed DIGITAL MultiSwitch 600 system may be to connect the functional module ports to the internal Ethernet LAN channels. This is generally done to create individual shared and switched Ethernet segments conforming to the desired network topology. clearVISN Multichassis Manager

(MCM) or clearVISN Stack Manager is used to set up the initial connections after the

DIGITAL MultiSwitch 600 system is built. Swapping or removing functional modules in a DIGITAL MultiSwitch 600 stack is sensed by the Stack Director to update the stack’s internal Ethernet LAN channel connections. Backplane Auto Healing must be enabled using clearVISN Multichassis Manager or Stack Manager for this feature to be activated. This feature allows you to remove, replace and/or swap functional modules of the same type without having to re-configure the internal LAN connections with clearVISN.

When a functional module is removed from a stack level, any connections to the internal Ethernet LAN channels are deleted. However, with Backplane Auto Healing enabled, connections are restored when a functional module of the same type is reinserted in that level. If another type of functional module is inserted into the stack level the connections are not restored and are permanently deleted. You must then use clearVISN Multichassis Manager or Stack Manager to make the desired connections.

Managing a Stack 10-5

Installation Menu Introduction

Installation Menu Introduction

Using the Setup Ports

The setup ports on the Stack Director and Stack Stations allow you to set parameters when the DIGITAL MultiSwitch 600 system is initially installed. Once the system is configured, you can perform routine network management tasks over the network and the setup port is no longer needed.

Modes of Operation

The hub setup port supports the following modes:

Installation menu

Redirect

Event display

These modes assume only ANSI/ASCII or PC-based terminal interface. Cursor control, screen management escape sequences, or flow control are not supported. The setup console may be attached to any ASCII device, including hardcopy terminals and printers.

Connecting a Terminal to the Setup Port

To connect a terminal to the setup port, ensure that the following terminal setup parameters are in effect (see Table 9-1).

Table 10-1: Terminal Setup Parameters

Parameter

Transmit speed

Character format

Stop bits

Setting

9600 baud

8 bits, no parity

1

10-6 Managing a Stack

Installation Menu Description

Installation Menu Description

The

Digital MS 600 Stack Director INSTALLATION MENU

provides you with 9 menu options. Some of these options contain additional submenu options.When the MultiSwitch 600 setup port is in default mode, the

Digital MS

600 Stack Director INSTALLATION MENU

appears. The user response for all menu selections is shown in boldface type.

The format for an SNMP address is the standard 4-octet dotted decimal notation, where each octet of the address is represented as a decimal value, separated by a decimal point (.).

You can exit from any of the menu options and return to the

Digital MS 600

Stack Director INSTALLATION MENU

by pressing <Ctrl/C> on the setup port device.

Managing a Stack 10-7

Installation Menu Description

Menu Options

NOTE

The

Digital MS 600 Stack Director INSTALLATION MENU screen displays illustrated in this manual may vary slightly from the actual screen displays on your setup port device.

Digital MS 600 Stack Director

===========================================================

Digital MS 600 Stack Director INSTALLATION MENU

[1] Restart with Factory Defaults

[2] Restart with Current Settings

[3] Show Current Settings

[4] Configure IP...

[5] Dump Error Log

[6] Downline Upgrade

[7] Configure Out-of-Band Port...

[8] Start Event display Mode

[9] Start Redirect Mode

===========================================================

Enter selection: n <Return>

10-8 Managing a Stack

[1] Restart with Factory Defaults

[1] Restart with Factory Defaults

This option reboots the DIGITAL MultiSwitch 600 Stack Director, initiating self-tests and causing its configured NVRAM parameters to be initialized to factory default values. All local nonvolatile settings except the Stack Director Serial Number, will be lost. To retain parameters, use option

[2] Restart with Current Settings

.

CAUTION

This action deletes all configuration settings and replaces them with factory default values. All configuration settings will be lost.

At the completion of the self-test, the DIGITAL MultiSwitch 600 Status Display displays the following message:

Selftest Complete

Start Main Firmware

Within a few seconds, the DIGITAL MultiSwitch 600 installation menu appears on your setup port screen. The following example shows the dialogue associated with this option:

Enter selection: 1

Digital MS 600 Stack Director

==========================================================

RESET WITH FACTORY DEFAULTS

* * * * * * * * * * * * * * * * * * * * * * * * * * * *

* IMPORTANT! IMPORTANT! IMPORTANT! *

* * * * * * * * * * * * * * * * * * * * * * * * * * * *

* This selection will delete the current configuration *

* settings and reset the system with the factory default*

* settings. All configuration settings will be lost. *

* * * * * * * * * * * * * * * * * * * * * * * * * * * *

==========================================================

Press Y to confirm [N]: <Return>

Press Return for Main Menu...

Managing a Stack 10-9

[2] Restart with Current Settings

[2] Restart with Current Settings

This option reboots the DIGITAL MultiSwitch 600 Stack Director, but leaves the systems’s configured NVRAM parameters at their current values.

Select Y to initiate the self-test. At the completion of self-test, the system’s Status

Display shows the following message:

Selftest Complete

Start Main Firmware

Within a few seconds, the

Digital MS 600 Stack Director

INSTALLATION MENU

appears on your setup port screen.

The following example shows the dialogue associated with this option:

Enter selection: 2

Digital MS 600 Stack Director

=============================================================

RESET WITH CURRENT SETTINGS

This selection will reset your system with the current

configuration settings.

=============================================================

Press Y to confirm [N] : <Return>

Press Return for Main Menu...

10-10 Managing a Stack

[3] Show Current Settings

[3] Show Current Settings

This option shows you the current settings of the Stack Director. If the DIGITAL

MultiSwitch 600 system is being configured for the first time, some fields are blank.

clearVISN MultiChassis Manager or another SNMP-based management application can be used to set or modify these values.

The following example shows the dialogue associated with this option:

Digital MS 600 Stack Director

Enter selection : 3

=====================================================================

Stack Director,Digital MS 600 Stack Director, HW=F,RO=V00.07,SW=V1.0.0

:

SNMP Read/Write Community public

SNMP Trap Addresses

:

Out-of-Band (OBM) Management RTS

BootP

:

Disabled

Interface

---------

OBM Port

IP Address

16.20.156.20

EthernetPort 16.20.156.26

Subnet Mask

255.255.0.0

255.255.0.0

Def.Gateway

Other Info

---------------------------------------

16.20.156.56

Speed 9600 bps

Active

=====================================================================

...Press Return Key to Continue...

Digital MS 600 Stack Director

=====================================================================

Hub Name

:

Digital MS 600 Stack Director

Hub Contact

:

:

=====================================================================

Slot1, MS Hub 624T Status : up

Slot2, Empty

=====================================================================

...Press Return Key to Continue

...

Managing a Stack 10-11

[4] Configure IP

[4] Configure IP

The Configure IP option provides you with five IP configuration selections.

IP Configure Selections

The following example shows the six configuration selections associated with this option:

Enter selection: 4

Digital MS 600 Stack Director

======================================================

IP CONFIGURATION

[1] Set SNMP Read/Write Community

[2] Add SNMP Trap Addresses

[3] Delete SNMP Trap Addresses

[4] Set In-Band Interface IP Address

[5] Set Out-of-Band Interface IP Address

[6] Enable/Disable BootP

[7] Return To Main Menu

======================================================

Enter selection: 4

The following pages describe the IP Configuration menu selections.

Topic

[1] Set SNMP Read/Write Community

[2] Add SNMP Trap Addresses

[3] Delete SNMP Trap Addresses

[4] Set In-Band Interface IP Address

[5] Set Out-of-Band Interface IP Address

[6] Enable/Disable BootP

Page

10-13

10-14

10-15

10-16

10-17

10-18

10-12 Managing a Stack

[4] Configure IP

[1] Set SNMP Read/Write Community

This option prompts you to enter the SNMP read/write community name.

The factory default of this menu option sets the read/write community name to public

.

The following example shows the dialogue associated with this option.

Enter selection : 1

Digital MS 600 Stack Director

================================================================

SET SNMP READ/WRITE COMMUNITY

Format: The format for a community name is a string, consisting of 4 to 31 printable ASCII characters, that describes the relationship between an SNMP agent and one or more SNMP managers. The string defines the authentication mechanism that is employed to validate the use of the community by the sending

SNMP entity.

================================================================

Enter the community string [public] : engineering<Return>

SNMP Read/Write community string set.

Press Return for IP Configuration Menu...

NOTE

While a 31-character string is allowed, it is strongly recommended that you enter a maximum of 29 characters, because the Stack Director appends two characters to the string (a dash and a slot number) when passing SNMP management command to a module. The full string cannot exceed 31 characters.

Managing a Stack 10-13

[4] Configure IP

[2] Add SNMP Trap Addresses

This option prompts you to enter IP addresses to which SNMP traps will be sent from the DIGITAL MultiSwitch 600 system. SNMP-managed devices are able to send trap messages to network management stations. You configure the IP addresses of NMS

“trap sinks” that are to receive the trap messages. (For more information on traps, refer to RFC 1215.)

The factory default of this menu option deletes all SNMP trap addresses.

The following example shows the dialogue associated with this option.

Enter selection : 2

Digital MS 600 Stack Director

=================================================================

ADD SNMP TRAP ADDRESSES

Format: The standard 4 octed dotted decimal notation in which each octet of the address is represented as a decimal value, separated by ’.’ character.

example: 16.20.40.156

=================================================================

Enter Trap addresses [ ]:

16.20.40.156

Trap address added! Enter a Trap Address [none] : <Return>

Press Return for IP Configuration Menu...

10-14 Managing a Stack

[4] Configure IP

[3] Delete SNMP Trap Addresses

This option prompts you to select SNMP trap addresses and delete them, one at a time, from the community trap address table.

The following example shows the dialogue associated with this option.

================================================================

Enter selection : 3

Digital MS 600 Stack Director

================================================================

DELETE SNMP TRAP ADDRESSES

Format: The standard 4 octet dotted decimal notation in which

each octet of the address is represented as a decimal

value, separated by a ’.’ character.

example: 16.20.40.156

=================================================================

Configured SNMP Trap Addresses: 16.20.216.81

Enter a Trap address [ ] : 16.20.216.81:

Trap address deleted. Enter a Trap Address [] : <Return>

Press Return for IP Configuration Menu...

Managing a Stack 10-15

[4] Configure IP

[4] Set In-Band Interface IP Address

This option prompts you for a slot number and an IP address for in-band configuration.

If an IP address was previously configured for a slot, the screen displays an in-band IP address.

To remove an IP address, enter 0 in the appropriate address field.

The factory default of this menu option deletes all the in-band IP addresses.

The following example shows the dialogue associated with this option.

==========================================================

Enter selection: 4

Digital MS 600 Stack Director

==========================================================

IN-BAND INTERFACE IP ADDRESS CONFIGURATION

Format: The standard 4 octet dotted decimal notation in which each octet of the address is represented as a decimal value, separated by a ’.’ character.

example: 16.20.40.156

To delete the address, enter 0 in the appropriate address field.

Interface IP Address Subnet Mask Def.Gateway

Other Info

OBM Port Speed 38400 bps

========================================================

Enter the IP address [ ]: 16.20.156.54 <Return>

Enter the Subnet Mask [ ]: 255.255.255.0 <Return>

Enter the Default Gateway [ ]: <Return>

Press Return for IP Configuration Menu...

10-16 Managing a Stack

[4] Configure IP

[5] Set Out-of-Band Interface IP Address

This option prompts you for an IP address for out-of-band configuration. If an IP address was previously configured, the screen displays an out-of-band (OBM) IP address.

To remove an OBM IP address, enter 0 in the appropriate address field.

The OBM feature allows you to manage your DIGITAL MultiSwitch 600 system through the OBM port as an alternative to normal in-band management. To enable outof-band management, assign an OBM IP address and select an OBM port speed from the

Digital MS 600 Stack Director INSTALLATION MENU.

The factory default of this menu option deletes the out-of-band IP address.

The following example shows the dialogue associated with this option.

Enter selection: 5

Digital MS 600 Stack Director

============================================================

OUT-OF-BAND INTERFACE IP ADDRESS CONFIGURATION

Format: The standard 4 octet dotted decimal notation in which each octet of the address is represented as a decimal value, separated by a ’.’ character.

example: 16.20.40.156

To delete the address, enter 0 in the appropriate address field.

Interface IP Address Subnet Mask Def.Gateway

Other Info

OBM Port

Speed 38400 bps

Ethernet Port 08-00-2B-B1-4D-C7

===========================================================

Enter the IP address [ ]: 16.20.54.156 <Return>

Enter the Subnet Mask [ ]: 255.0.0.0 <Return>

Press Return for IP Configuration Menu...

Managing a Stack 10-17

[4] Configure IP

[6] Enable/Disable BootP

This option allows you to enable or disable the BootP IP bootstrap protocol. The following example shows the dialogue associated with this option.

Enter selection : 6

Digital MS 600 Stack Director

================================================================

ENABLE/DISABLE BOOTP

BOOTP is the IP bootstrap protocol. BOOTP may be used

to obtain the module’s IP address, subnet mask and default

gateway. When BOOTP is Enabled and the module is not configured

with an IP Address the module will send out BOOTP requests

until it receives a response or is manually configured with

an IP Address. When BOOTP is Disabled no BOOTP requests will

be sent.

The BOOTP Server must be properly configured to return the address information.

================================================================

The BOOTP process is DISABLED

Would you like to ENABLE BOOTP Y/[N]

10-18 Managing a Stack

[5] Dump Error Log

[5] Dump Error Log

This option displays error log dumps for use by DIGITAL support personnel when analyzing system faults. Up to eight error log messages can be stored, and the most recent message is displayed first.

The following example shows the dialogue associated with this option.

Enter selection : 5

Digital MS 600 Stack Director

=========================================================

DUMP ERROR LOG

Current reset count: 115

=============================================================

.

Entry 49

Time Stamp 0 46235

Reset Count 102

Firmware Rev = T1.0.26

Dump another entry [Y]/N? Return

Entry 48

Time Stamp 0 0

Reset Count 98

SW V4.2 -> V5.0 ; Config retained.

Dump another entry [Y]/N? Return

=============================================================

No more Error Log entries.

Press Return for Main Menu...

Managing a Stack 10-19

[6] Downline Upgrade

[6] Downline Upgrade

This option allows you to upgrade firmware for the Hub Manager and network module in nonvolatile Flash memory.

CAUTION

If power is interrupted during Stage 3 of the DLU process, the firmware image can become corrupted. Do not turn off power to the unit or perform any action that can cause the unit to lose power during Stage 3 of the DLU process.

Approximate Downline Upgrade Completion Time

The downline upgrade process normally runs for approximately 4 minutes to completion. However, the entire process could take as long as 10 minutes to complete when network traffic is heavy.

10-20 Managing a Stack

[6] Downline Upgrade

Initial Setup Screen

When you select the

[6] Downline Upgrade

option from the

Digital MS

600 Stack Director INSTALLATION MENU

, the initial setup screen display appears. This screen identifies the option and alerts you to be sure that the power to the device is not interrupted during the downline load.

=================================================================

Enter selection : 6

Digital MS 600 Stack Director

=================================================================

DOWNLINE UPGRADE

This process upgrades the specified module’s firmware

(in nonvolatile Flash memory). Enter the IP Address

of your TFTP (Trivial File Transfer Protocol) load host and the image file name when prompted.

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* IMPORTANT! IMPORTANT! IMPORTANT! *

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* If power is interrupted during the downline load, the

*

*

*

* the firmware image can be corrupted. Do not turn off power to the unit or perform any action that can cause the unit to lose power during a downline upgrade.

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

=================================================================

...Press Return Key to Continue...

*

*

*

Selecting the Level to be Upgraded

The Stack Director prompts you for the level to which the upgrade will be downloaded.

The default is Slot 9 (the Stack Director).

Enter the level to be upgraded [9] (Stack Director):

Enter the level number of the device to be upgraded or accept the default and press

<Return>.

Managing a Stack 10-21

[6] Downline Upgrade

Entering the Load File Name

The Stack Director prompts you for the load file name.

Enter the Load Filename [ ] :

Enter the loadfile name using the following guidelines and press <Return>:

If the file is...

Located in the default TFTP directory...

Not located in the default TFTP directory...

Then enter...

Only the filename.

The complete path name along with the filename.

Load Host IP Address

The Stack Director prompts you for the Load Host IP Address. This is the IP address of the host from which the firmware upgrade will be downloaded.

Enter the Load Host IP Address [ }:.

Enter the address and press <Return>.

Choosing a Network Interface

If there is only one network interface for the Stack Director to choose from, the firmware upgrade download processing begins. Skip to the next section (Download

Processing Stages) for a description of the messages that appear during the firmware upgrade download processing.

When both in-band and out-of-band IP addresses are assigned, you must choose from the multiple network interfaces that are available.

When more than one IP address (therefore, more than one network interface) is present, you are prompted to choose a network interface to use for the load request.

10-22 Managing a Stack

[6] Downline Upgrade

Load will be initiated over the Ethernet Port network interface.

Would you like to use a different interface? Y/[N] :

If you choose the default [N], the setup screen displays the following message:

The device becomes nonfunctional for up to 10 minutes during the time that the flash load is in progress.

... Press Return Key to Start Load [ctrl/c to Abort]...

.

Pressing <Return> initiates the load over the in-band network interface.

If you choose Y at the screen prompt, the setup screen displays the following dialogue:

Interface

----------

1

2

Description

--------------

OBM Port

Ethernet

Enter the network interface to be used [2]:

Select the desired network interface, then press <Return>. The setup screen displays the following message:

...Press Return Key to Start Load [ctrl/c to Abort

]

...

The device becomes nonfunctional for up to 10 minutes during the time that the flash load is in progress.

Pressing <Return> initiates the load over the selected network interface.

NOTE

The console will be disabled during downline load of the Stack Director.

Managing a Stack 10-23

[6] Downline Upgrade

TFTP Load Host and Image File Example

The following example shows an image file name and an IP address: dlssm100.bin and 16.20.54.155

The format of the image file name is specified according to the conventions used by your TFTP load server.

Download Processing Stages

The Download process consists of four stages:

2

3

Stage

1

4

Description

Transferring the image to the module’s temporary storage buffer

Verifying the image

Writing the new image into nonvolatile flash memory

Module reset and self-test

Table 10-2 explains what happens during each stage of the download process.

Table 10-2: Download Process Description

Stage

1

Description

The DLU Process transports the new firmware image across the network from the TFTP load host and places it into a temporary storage buffer.

After you initiate the process, the setup port screen displays the following message followed by a series of dots (. . . . . . . .), indicating the downline upgrade is in progress:

DLU process started!

.........................................

This screen is seen only when downloading a functional module in a stack.

10-24 Managing a Stack

[6] Downline Upgrade

Stage

2

3

4

Description

The module verifies that the firmware image is correct. This stage normally takes 10 seconds to complete.

When the TFTP load transfer is complete and the TFTP image is verified, the device becomes nonfunctional, and the flash load process begins. (The flash load process can take up to 10 minutes to complete.)

When the TFTP load transfer is complete, the Stack Director verifies the TFTP image.

The DLU process transfers the new image from a temporary storage buffer to the nonvolatile flash memory, overwriting the old image.

After the Stack Director verifies the image, it writes the image into flash memory.

The Stack Director resets, runs self-test, and then begins executing the new firmware image.

After the Stack Director stores the image into flash memory, it boots the new image.

After the Stack Director completes booting the new image, it may need to reset the configuration settings.

After the Stack Director resets the configuration, it initiates self-test.

When self-test completes it starts the main firmware.

Download Processing for Network Modules

If you are initiating the load process to a network module, the Stack Director firmware attempts to communicate with the module. Because the module is nonfunctional during the flash load process, communications between the module and the Stack

Director cannot take place.

The flash load takes up to 10 minutes to complete. Do not interrupt power to the module while the downline load is in progress.

You can perform network module firmware upgrades on up to eight slots concurrently.

However, you cannot do multiple loads while you are upgrading the Stack Director firmware.

Managing a Stack 10-25

[6] Downline Upgrade

NOTE

During the download process for a network module, the messages may differ from those displayed during the download procedure for the Stack Director firmware

(as shown in the preceding section of this manual).

Verifying the Upgrade

After the downline upgrade process has completed, you can verify the firmware upgrade as follows.

For the Stack Director:

Step

1

2

3

Action

Select Option

[3] Show Current Settings from the

Digital MS 600 Stack Director INSTALLATION

MENU.

Press <Return>

Verify that the correct version was loaded.

2

3

4

For the For a functional module:

Step

1

Action

Select Option

[6] Downline Upgrade from the

Digital

MS 600 Stack Director INSTALLATION MENU.

Press <Return>

Verify that the correct version was loaded.

Press <Ctrl/C> to return to Main Menu.

10-26 Managing a Stack

[6] Downline Upgrade

The screen displays the following text:

=======================================================================

Digital MS 600 Stack Director

Enter selection : 3

=======================================================================

Stack Director, Digital MS 600 Stack Director, HW=F,RO=V00.07,SW=V1.0.0

: 11 days 18:52:25 100 resets public

None Configured

Out-of-Band (OBM) Management RTS

BootP

: Disabled

Interface

---------

OBM Port

IP Address

----------

16.20.156.20

EthernetPort 16.20.156.26

Subnet Mask

255.255.0.0

255.255.0.0

Def.Gateway

Other Info

------------------------------

16.20.156.56

Speed 9600 bps

Active

=======================================================================

...Press Return Key to Continue...

Digital MS 600 Stack Director

=======================================================================

Hub Name

:

Digital MS 600 Stack Director

Hub Serial Number

:

Hub Location

:

Hub Contact

:

=======================================================================

Slot1, MS Hub 624T Status : up

Slot2, Empty

=======================================================================

...Press Return Key to Continue...

Managing a Stack 10-27

[7] Configure Out-of-Band Port

[7] Configure Out-of-Band Port

This option provides you with two configuration selections:

Set Port Speed

Enable/Disable RTS

Out-of-Band Port Configuration Menu Selections

The following example shows the menu selections associated with this option:

Enter selection : 7

Digital MS 600 Stack Director

=========================================================

OUT-OF-BAND PORT CONFIGURATION

[1]

[2]

Set Port Speed

Enable/Disable RTS

[3] Return to Main Menu

=========================================================

Enter selection: [n] <Return>

The following topics describe the Configure Out-of-Band Port Configuration menu selections.

10-28 Managing a Stack

[7] Configure Out-of-Band Port

Set Port Speed

This option prompts you to select and enter the speed of your out-of-band management

(OBM) port.

NOTE

The port speeds at each end of the communications link must be identical.

The factory default of this menu option sets the out-of-band port speed to 9600 baud.

The following example shows the dialogue associated with this option.

Enter selection : 1

Digital MS 600 Stack Director

=========================================================

SET OUT-OF-BAND (OBM) PORT SPEED

[1]

[2]

[3]

[4]

[5]

1200

2400

9600

19200

38400 baud baud baud baud baud

[========================================================

Enter selection : [3] (9600) : 5 <RETURN>

OBM port speed set.

Press Return for OBM Configuration Menu...

Managing a Stack 10-29

[7] Configure Out-of-Band Port

Enable/Disable RTS Selection

This option allows you to enable/disable request to send (RTS) for additional control to modem communications. When you enable this option, the RTS signal on the OBM port is active only when data, such as an SNMP trap, is being transmitted to the OBM port. When you disable this option, RTS is always active. RTS is automatically disabled upon the completion of module self-tests.

The factory default of this menu option is disabled.

The following example shows the dialogue associated with this option.

=================================================================

Enter selection : 2

Digital MS 600 Stack Director

=================================================================

ENABLE/DISABLE OUT-OF-BAND PORT RTS

Enable/Disable Request to Send (RTS) allows additional control to modem communications. When the RTS option i s

Disabled the RTS signal on the OBM port is asserted af ter self-test is completed and left asserted. When the RTS option is Enabled the RTS signal is asserted only when there is data to be transmitted and deasserted after the data h as been transmitted.

=================================================================

RTS is Disabled. Would you like to Enable RTS? [N}

...Press Return Key to Continue...

10-30 Managing a Stack

[8] Start Event Display Mode

[8] Start Event Display Mode

This option allows you to display events as they occur in the DIGITAL MultiSwitch

600 and displayed by the Stack Station.

When >> appears in the screen dialogue, it indicates a change in status.

You can return to the

Digital MS 600 Stack Director INSTALLATION MENU

any time by pressing <Ctrl/C> on the setup port device.

The following example shows the dialogue associated with this option.

=================================================================

Enter selection : 8

Press return to start event log [CTRL/C to abort] ...

4: Querying

Status : Module Inserted

.

4: MS Hub 624T

>> Description: HW=V1,RO=V01.03,SW=V1.0.0

Health-Text:

Status :

4: MS Hub 624T

>> Description: HW=V1,RO=V01.03,SW=V1.0.0

Health-Text:

Status :

6: Querying

Status : Module Inserted

6: Unkown

Status : Module Removed

4: MS Hub 624T

Status : Module Removed

Managing a Stack 10-31

[9] Start Redirect Mode

[9] Start Redirect Mode

The

[9] Start Redirect Mode option redirects the DIGITAL MultiSwitch

600 Stack Director setup port to the functional module (such as the DIGITAL

MultiSwitch 612EX or DIGITAL MultiSwitch Hub 624T) that is installed in the requested slot. Choosing this option allows you to configure an installed module or obtain its status by accessing the specified network module’s installation menu.

After you choose the

[9] Start Redirect Mode

option from the

Digital

MS 600 Stack Director INSTALLATION MENU

, the screen display prompts you for a slot number. Type the slot number where the functional module resides. Slot number (8) is used in the following example. After you enter the number of the slot in which the module is installed, the console is redirected to that slot.

NOTE

The slot number may vary depending on the slot number in which your module is installed.

The following example shows the dialogue associated with this option.

=================================================================

Enter the slot number for redirection (1-8): 8

Console redirected to 8: MultiSwitch 612EX

Attempting connection [Ctrl/C to abort]...

Connection Successful!

If the redirection is successful, after you press <Return>, the

Digital MultiSwitch

612EX INSTALLATION MENU

appears on your screen.

10-32 Managing a Stack

Chapter 11

Removing or Replacing a Level on the Stack

Overview

Introduction

This chapter describes how to remove and replace a level in the DIGITAL MultiSwitch

600 stack.

In This Chapter

Topic

Removing or Replacing Components

Task 1: Removing Power Cords and Cables

Task 2: Removing or Replacing the Levels

Task 3: Removing a Stack Director or Stack Station from the

Mounting Tray

Page

11-2

11-2

11-4

11-8

Removing or Replacing a Level on the Stack 11-1

Removing or Replacing Components

Removing or Replacing Components

To remove or replace components in a stack, complete the tasks in this section. You will need Phillips-head and flat-blade screwdrivers for the removal.

NOTE

DIGITAL recommends that a stack level not be removed from or added to a live stack. If available, backup your current stack settings using clearVISN Recovery

Manager, power down the stack, and reconfigure the stack.

Task 1: Removing Power Cords and Cables

To disconnect power cords and cables from the DIGITAL MultiSwitch 600 stack, perform the procedure in the following table (See Figure 11-1).

3

4

5

Step

1

2

Action

Remove the AC line cord from the IEC power connectors (1) of all Stack

Stations and the Stack Director.

If used, remove the cable from the Stack Director Management Access port (2).

If used, remove the cable from the Stack Director 10Base2 port (3).

If used, remove the cable from the Stack Director OBM port (4).

If used, remove the setup port cable from the Stack Director and Stack

Station setup ports (5).

11-2 Removing or Replacing a Level on the Stack

Figure 11-1: Connector Locations

Removing or Replacing Components

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Director

1

2

3

4

5

NPB-0662-96F

Removing or Replacing a Level on the Stack 11-3

Removing or Replacing Components

Task 2: Removing or Replacing the Levels

To remove a level from the stack, perform the procedure in the following table. Figure

11-2 shows removal details.

Figure 11-2: Removing a Stack Station

2

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Director

NPB-0688-96F

11-4 Removing or Replacing a Level on the Stack

Removing or Replacing Components

NOTE

DIGITAL recommends that a stack level not be removed from or added to a live stack. If you must remove or add a stack level, the stack must be powered down.

If available, backup your current stack settings using clearVISN Recovery

Manager.

6

7

8

4

5

2

3

.

Step

1

Action

If available, use clearVISN Recovery Manager to backup current settings for each device (including the Stack Director) on the stack.

Remove power cords and cables. Refer to Task 1: Removing Power

Cords and Cables

Remove the dust cap (2) from the vertical connector slot on the top level

(Stack Station) of the stack.

Loosen and remove the wing nuts (1) from the Stack Station by turning them counterclockwise.

Remove the Stack Interconnect Card from the Stack Station by holding the Stack Interconnect Card by its sides and pulling it up from the vertical connector (Figure 11-3) being careful not to damage the strip metal gaskets (copper fingerstocks).

To rebuild the stack, attach the next level on the stack. Refer to Task 4:

Attaching the Next Level in the Stack in Chapter 9 for more information.

Replace the dust cap in the vertical connector slot on the top level of the stack.

Cable the Stack Director and Stack Station. Refer to Task 5: Cabling the

Stack Director and Stack Station and Task 6: Connecting Power in

Chapter 9 for more information.

Removing or Replacing a Level on the Stack 11-5

Removing or Replacing Components

Step

9

Action

If available, use clearVISN Recovery Manager to restore settings for each device on the stack that lost its settings.

Functional modules that are in the same slot when the stack is powered up as they were when the stack was powered down will be automatically reconfigured with their previous backplane settings by the Stack

Director.

Functional modules that are not in the same slot, but are the same type

(that is DIGITAL MultiSwitch 612EX, DIGITAL MultiSwitch Hub

624T, etc.) as the module that was previously in the slot, will be reconfigured with the backplane settings used by the previous module.

However, Port Switch group configuration is saved in the non-volatile memory of the DIGITAL MultiSwitch Hub 624T, and thus stays with the module, not the slot.

Functional modules that are not the same type as the module previously in the slot will not be automatically configured.

11-6 Removing or Replacing a Level on the Stack

Removing or Replacing Components

Figure 11-3: Stack Interconnect Card Removal

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Station

MultiSwitch 600

Stack Director

NPB-0659-96F

Removing or Replacing a Level on the Stack 11-7

Removing or Replacing Components

Task 3: Removing a Stack Director or Stack Station from the Mounting

Tray

To remove a Stack Director or Stack Station from the mounting tray, perform the procedure in the following table. Figure 11-4 shows location of screws securing the

Stack Director to the mounting tray.

Figure 11-4: Removing Stack Director or Stack Station from Mounting

Tray

MultiSwitch 600

Stack Director

1

NPB-0513-96F

Step

1

2

Action

Remove the Stack Director or Stack Station from the mounting tray by removing the two 6-32 machine screws (1).

For a rack-mount configuration, remove the mounting tray from the rack.

11-8 Removing or Replacing a Level on the Stack

Part III

Reference Information

Appendix A

Problem Solving

Overview

Introduction

This appendix describes the LED states and troubleshooting information for the

DIGITAL MultiSwitch Hub 624T and MM-10s.

In This Appendix

Topic

DIGITAL MultiSwitch Hub 624T LED States

Stack Director LED States

Stack Station LED States

MM-10 LED States

AUI MM-10 LEDs States

Reverse AUI MM-10 LEDs States

10Base2 MM-10 LEDs States

10BaseFL MM-10 LED States

10BaseT MM-10 LEDs States

DIGITAL MultiSwitch Hub 624T Problem Solving Using the LEDs

Stack Director Problem Solving Using the LEDs

Stack Station Problem Solving Using the LEDs

A-7

A-8

A-9

A-10

A-11

A-14

A-16

Page

A-2

A-4

A-5

A-6

A-6

Problem Solving A-1

DIGITAL MultiSwitch Hub 624T LED States

DIGITAL MultiSwitch Hub 624T LED States

Table A-1 describes the states indicated by the module’s LEDs.

Table A-1: DIGITAL MultiSwitch Hub 624T LED States

LED Name

Power OK

LED

Off

Module is not receiving power.

Green On

Module has power.

Green Blinking

Faulty power connection or insufficient power.

Yellow On

N/A

Module OK

LED

10Base2 Port

Status LED

Network

Activity

LEDs

Module failed self-test or module problem exists.

Module is not connected to a properly terminated and operational LAN through the

10Base2 port on the DEChub 900 or the DIGITAL

MultiSwitch 600

System.

Module passed self-test.

Module is connected to a properly terminated and operational

LAN through the 10Base2 port on the

DEChub 900 or the DIGITAL

MultiSwitch

600 System.

Non-fatal failure

(for example: bad fan).

10Base2 port on the

DEChub 900 or the

DIGITAL

MultiSwitch 600

System is disabled by network management.

N/A

N/A

Internal LAN exists only on module.

Internal LAN is connected to flex channel on

Stack

Director or

DEChub 900.

Note: The Network Activity LEDs indicate which internal LANs are active. They do not indicate the mapping of the port groups (A, B, and C) to the internal LANs.

For example, if port groups A, B, and C are mapped to LAN 1, then LED 1 will light. If A and B are mapped to LAN 1 and C is mapped to LAN 2, then LEDs 1 and 2 will light. If A and B are mapped to LAN 1 and C is mapped to LAN 3, then

LEDs 1 and 3 will light.

A-2 Problem Solving

LED Name

Port Group

Select LEDs

A, B, C

Port Status

LEDs 1 - 12

Off

Associated port group is not currently displaying its port connection status on the 12

Port Status

LEDs.

Bad or no connection.

Green On

DIGITAL MultiSwitch Hub 624T LED States

Indicates port group for which the 12

Port Status

LEDs display status.

Green Blinking

N/A

Yellow On

N/A

Port is connected to another operational network device.

The associated port is disabled by network management.

N/A

Problem Solving A-3

Stack Director LED States

Stack Director LED States

This section describes the LEDs states for the Stack Director. Table A-2 list LED states for the Stack Director that are useful when troubleshooting the Stack Director.

Table A-2: Stack Director LED States

LED Name

Power OK

FRU OK

Off

Stack Director is not receiving power.

On

Stack Director has power.

Self test is executing or LED is bad.

Stack Director passed self-test.

Blinking

Faulty power connection or insufficient power.

Stack Director failed self-test.

OBM Port

10Base2 Port

Status

SLIP is not available through this interface.

The port is disabled by network management.

SLIP is available through this interface.

The port is available and can be connected to an operational LAN.

There is SLIP activity on this line.

N/A

Network

Activity

Management

Access Port

Status

No network traffic on the

10Base2 port or

10BaseT port.

The port is disabled by network management.

Network has heavy traffic on the 10Base2 port or 10BaseT port.

The port is available and can be connected to an operational LAN.

Blinks faster and brighter as traffic increases on the

10Base2 port or

10BaseT port.

N/A

Stack Level

Management

Status

The device at this level is not functional or not communicating with the Stack

Director.

The device at this level is functional and is communicating with the Stack

Director.

N/A

A-4 Problem Solving

Stack Station LED States

Stack Station LED States

This section describes the LEDs states for the Stack Station

Table A-3 list LED states for the Stack Station that are useful when troubleshooting the Stack Station.

Table A-3: Stack Station LED States

LED Name

Power OK

Setup Port

Off

Stack Station is not receiving power.

Stack Station failed self-test.

On

Stack Station has power.

Stack Station passed self-test.

Blinking

Faulty power connection or there is insufficient power.

Fan is faulty.

Problem Solving A-5

MM-10 LED States

MM-10 LED States

AUI MM-10 LEDs States

Table A-4: AUI LED States

LED

Name

Activity

Port

Status

Off Green On Green Blinking

No activity.

Not connected or not functioning.

Local traffic through front panel, link is functioning.

If traffic is heavy, LED blinks so frequently that it appears continuously lit.

Port is connected.

At startup, indicates MM-10 is seated correctly.

During normal operation, indicates port is management partitioned.

Yellow

On

Yellow

Blinking

Local traffic through backplane, link is functioning.

If traffic is heavy, LED blinks so frequently that it appears continuously lit.

Loopback test fails;

MM-10 is broken.

Loopback test passes, but 12V power is not present.

A-6 Problem Solving

MM-10 LED States

Reverse AUI MM-10 LEDs States

Reverse AUI LED States

LED

Name

Activity

Port

Status

Off

No activity.

Not connected or not functioning.

Green On Green

Blinking

Local traffic through front panel, link is functioning.

If traffic is heavy, LED blinks so frequently that it appears continuously lit.

Port is connected.

At startup, indicates MM-

10 is seated correctly.

During normal operation, indicates port is management partitioned.

Yellow

On

Yellow

Blinking

Local traffic through backplane, link is functioning.

If traffic is heavy, LED blinks so frequently that it appears continuously lit.

Loopback test fails;

MM-10 is broken.

N/A

Problem Solving A-7

MM-10 LED States

10Base2 MM-10 LEDs States

Table A-5: 10Base2 LED States

LED

Name

Activity

Port

Status

Off Green On Green Blinking

No activity.

Not connected or not functioning.

Local traffic through front panel, link is functioning.

If traffic is heavy, LED blinks so frequently that it appears continuously lit.

Port is connected.

At startup, indicates MM-10 is seated correctly.

During normal operation, indicates port is management partitioned.

Yellow

On

Loopback test fails;

MM-10 is broken.

Yellow

Blinking

Local traffic through backplane, link is functioning.

If traffic is heavy, LED blinks so frequently that it appears continuously lit.

N/A

A-8 Problem Solving

MM-10 LED States

10BaseFL MM-10 LED States

Table A-6: 10BaseFL LED States

LED

Name

Activity

Port Status

Link

Status

Off

No activity.

Not connected or not functioning.

Not connected or not functioning.

Green On Green

Blinking

Local traffic through front panel, link is functioning.

If traffic is heavy, LED blinks so frequently that it appears continuously lit.

Port is connected.

At startup, indicates MM-

10 is seated correctly.

During normal operation, indicates port is management partitioned.

There is an idle signal between port and attached station.

N/A

Yellow

On

Loopback test fails;

MM-10 is broken.

Yellow

Blinking

Local traffic through backplane, link is functioning.

If traffic is heavy, LED blinks so frequently that it appears continuously lit.

N/A

N/A N/A

Problem Solving A-9

MM-10 LED States

10BaseT MM-10 LEDs States

Table A-7: 10BaseT LED States

LED

Name

Activity

Port

Status

Link

Status

Off

No activity.

Not connected or not functioning.

Not connected.

Green On Green Blinking

Local traffic through front panel, link is functioning.

If traffic is heavy, LED blinks so frequently that it appears continuously lit.

If port is the responder port in a redundant link and there is no data traffic or there is no cable attached to the port, LED flashes when link is checked periodically.

Port is connected.

At startup, indicates MM-10 is seated correctly.

During normal operation, indicates port is management partitioned.

N/A Link pulses detected between port and attached station.

Yellow

On

Yellow

Blinking

Local traffic through backplane, link is functioning.

If traffic is heavy, LED blinks so frequently that it appears continuously lit.

Loopback test fails;

MM-10 is broken.

N/A

N/A

N/A

A-10 Problem Solving

DIGITAL MultiSwitch Hub 624T Problem Solving Using the LEDs

DIGITAL MultiSwitch Hub 624T Problem Solving Using the

LEDs

A problem is often indicated by the combined states of the DIGITAL MultiSwitch Hub

624T’s LEDs. The following table lists the states of the LEDs for various error conditions, the probable causes, and corrective action to take.

NOTE

If sufficient power becomes unavailable to a DIGITAL MultiSwitch Hub 624T that is operating in a DEChub 900 MultiSwitch, the module enters into a low power mode and suspends operations. The DEChub 900 MultiSwitch LCD displays the message, “Not Enough Power!”

Table A-8: Typical Combined States of LEDs.

Symptom

Power LED is off.

Probable Cause

The module is not receiving +5Vdc.

Corrective Action

Check the power status on the module, Stack Director and Stack

Station, or DEChub 900.

If the module indicates that power is available for this module, press the release lever and reseat or remove the module.

If the problem persists, either replace the module or contact your service representative to correct the problem.

Wait for self-test to complete.

Module OK LED is off.

The module Self-test in progress.

Self-test failed.

If the LED does not light within

60 seconds disconnect the module and plug in again.

If self-test fails again, replace the module. If the problem persists, contact your service representative to correct the problem.

Problem Solving A-11

DIGITAL MultiSwitch Hub 624T Problem Solving Using the LEDs

Symptom

The module OK

LED is off and

Ethernet Activity

LED for Port 1 is blinking green

(once every 8 seconds).

The module OK

LED is blinking, but continues to operate normally.

Port Status

LED is off.

Port Status LED is blinking green.

Port activity LED is flickering yellow

Probable Cause

The module’s firmware image is corrupted.

Module failed diagnostics with a fatal error; or a fatal error was sensed during steady state operation.

A non-fatal error occurred.

The module passed diagnostics with a non-fatal error; or a non-fatal error (fan failure) is being sensed currently, even though module passed diagnostics successfully when it was initialized.

1. Connection is bad

(loose or incorrect cable).

2. Port not connected.

Port is disabled (e.g., by management, security, or is isolated by storm control, or is pointed to the backplane, but not connected to any backplane LAN).

Traffic sensed on backplane LAN to which port is connected.

Corrective Action

Either replace the module or contact your service representative to correct the problem.

Power off and on. If the problem persists, either replace the module or contact your service representative to correct the problem.

Correct the cable connection.

None — normal operation.

None — normal operation.

None.

A-12 Problem Solving

Symptom

DIGITAL MultiSwitch Hub 624T Problem Solving Using the LEDs

Port activity LED is flickering green.

Port activity LED is off.

Probable Cause

Traffic sensed on network connected to port.

No traffic sensed.

Corrective Action

None.

None.

Problem Solving A-13

Stack Director Problem Solving Using the LEDs

Stack Director Problem Solving Using the LEDs

A problem is often indicated by the states of the LEDs on the Stack Director. The following table lists the states of the LEDs for various error conditions, the probable causes, and corrective action you may take.

NOTE

During the power up reset sequence the Activity LED and the FRU OK LED do not light.

Table A-9 list possible error conditions for the Stack Director that are useful when troubleshooting the Stack Director.

Table A-9: Stack Director Error Conditions

Symptom

Power OK LED is off.

FRU OK LED is off or blinking.

OBM Port Status LED does not light when self test completes.

10Base2 Port Status

LED does not light when self test completes.

Network Activity LED does not light.

Probable Cause

Stack Director is not receiving primary power.

Stack Director self test failed.

OBM port is faulty.

Port is not enabled due to error.

No network activity, cabling problem, or

MAC is faulty on the

Stack Director.

Corrective Action

Ensure that the power cord is properly plugged into the Stack Director and a working AC outlet.

Replace the Stack

Director.

Replace the Stack

Director.

Replace the Stack

Director.

Replace the Stack

Director.

Check network connection or Replace

Stack Director.

A-14 Problem Solving

Stack Director Problem Solving Using the LEDs

Symptom

Management Access

Port Status LED does not light when self test completes.

A Stack Level

Management Status

LED does not light for a particular module.

Probable Cause

Port is not enabled due to error.

Corrective Action

Replace the Stack

Director.

Stack Director does not communicate with corresponding module.

Replace associated module.

Problem Solving A-15

Stack Station Problem Solving Using the LEDs

Stack Station Problem Solving Using the LEDs

A problem is often indicated by the states of the LEDs on the Stack Stations. The following table lists the state of the LEDs for various error conditions, the probable causes, and corrective action you may take.

NOTE

During the power up reset sequence the Activity LED and the FRU OK LED do not light.

Table A-10 list possible error conditions for the Stack Station that are useful when troubleshooting the Stack Station.

Table A-10: Stack Station Error Conditions

Symptom

Power OK LED is off.

Probable Cause

Stack Station is not receiving primary power.

Corrective Action

Check that the power cord is plugged in.

Replace the Stack

Station.

Replace module or Stack

Station.

Setup Port LED does not light when a module is connected.

Note: The Setup Port

LED should not light when the Stack Station is a member of a managed stack.

Module or Stack

Station is faulty.

A-16 Problem Solving

Appendix B

Connectors and Pin Assignments

Overview

Introduction

This appendix shows the pin assignments of the connectors, cables, and adapters that are part of, or can be used with, the DIGITAL MultiSwitch Hub 624T module and

DIGITAL MultiSwitch 600 System.

In This Appendix

Topic

DIGITAL MultiSwitch Hub 624T Connectors and Pin Assignments

10BaseT (8-pin MJ) Port Connector

MM-10 Connectors

10BaseFL Connectors (BN25J)

AUI (15-pin D-Sub) Port Connector

Reverse AUI (15-pin D-Sub) Port Connector

10Base2 Connector

10BaseT (8-pin MJ) Port Connector

Stack Director and Stack Station Connectors and Pin Assignments

Setup Port and Management Access Port Connector

OBM Port (9-Pin) Connector

10Base2 Connector

B-4

B-5

B-6

B-7

Page

B-3

B-3

B-4

B-8

B-9

B-9

B-10

B-11

Connectors and Pin Assignments B-1

Topic Page

H8225 50-Ohm Terminator B-11

Adapter B-12

B-2 Connectors and Pin Assignments

DIGITAL MultiSwitch Hub 624T Connectors and Pin Assignments

DIGITAL MultiSwitch Hub 624T Connectors and Pin

Assignments

10BaseT (8-pin MJ) Port Connector

The 10BaseT connector is used with the DIGITAL MultiSwitch Hub 624T. All twenty-four 10BaseT port connectors on the DIGITAL MultiSwitch Hub 624T are crossover connections. Table B-1 defines the 8-pin MJ connector pin assignments.

Figure B-1 shows their location.

Figure B-1: 10BaseT (8-pin MJ) Connector

1 8

Table B-1: 10BaseT (8-pin MJ) Connector Pin Assignments

5

6

7

8

2

3

Pin No.

1

4

Assignment

RX+

RX-

TX+

Not Connected

Not Connected

TX-

Not Connected

Not Connected

NPG-8719-95F

Connectors and Pin Assignments B-3

MM-10 Connectors

MM-10 Connectors

10BaseFL Connectors (BN25J)

Figure B-2 shows the 10BaseFL transmit connector and receive connector used with the DIGITAL MultiSwitch Hub 624T fiber MM-10.

Figure B-2: 10BaseFL Connectors

NPB-0601-96F

B-4 Connectors and Pin Assignments

MM-10 Connectors

AUI (15-pin D-Sub) Port Connector

This section shows the 15-pin AUI connector and its pin assignments.

Figure B-3: AUI Port Connector

9 15

1

11

12

13

14

15

7

8

9

10

5

6

3

4

Table B-2: AUI Port Connector

Pin No.

Port

1

2

Ground

CI+

DO+

Ground

DI+

Power rtn

No connection

Ground

CI-

DO-

Ground

DI-

Power 12V

Ground

No connection

8

NPB-0807-97F

Connectors and Pin Assignments B-5

MM-10 Connectors

Reverse AUI (15-pin D-Sub) Port Connector

This section shows the 15-pin reverse AUI connector and its pin assignments.

Figure B-4: Reverse AUI Port Connector

1 8

9 15

10

11

12

13

8

9

6

7

14

15

4

5

2

3

Table B-3: Reverse AUI Port Connector

Pin No.

Port

1 Ground

CI+

DO+

Ground

DI+

Power rtn

No connection

Ground

CI-

DO-

Ground

DI-

Power 12V

Ground

No connection

NPB-0802-97F

B-6 Connectors and Pin Assignments

MM-10 Connectors

10Base2 Connector

Figure B-5 shows the 10Base2 connector used on the DIGITAL MultiSwitch Hub

624T.

Figure B-5: 10Base2 Connector for DIGITAL MultiSwitch Hub 624T

NPB-0626-96F

Connectors and Pin Assignments B-7

MM-10 Connectors

10BaseT (8-pin MJ) Port Connector

This section shows the 10BaseT 8-pin MJ connector, both straight-through and crossover, and their pin assignments.

Figure B-6: 10BaseT Port Connector,

Pin 1 8

NPG-8719-95F

Table B-4: 10BaseT Connector Pin Assignments

6

7

4

5

8

2

3

Crossover Connector

Pin No.

Assignment

1 RX+

RX-

TX+

Not Connected

Not Connected

TX-

Not Connected

Not Connected

Straight-Through Connector

Pin No.

Assignment

1

2

3

4

5

6

7

8

TX+

TX-

RX+

Not Connected

Not Connected

RX-

Not Connected

Not Connected

NOTE

Use only one of the 10BaseT connectors at a time.

B-8 Connectors and Pin Assignments

Stack Director and Stack Station Connectors and Pin Assignments

Stack Director and Stack Station Connectors and Pin

Assignments

Setup Port and Management Access Port Connector

This 8-pin MJ connector is used for the setup port on the Stack Director and Stack

Station and for the management access port on the Stack Director only. Table B-5 defines the pin assignments as shown in Figure B-7.

Figure B-7: Stack Director and Stack Station Setup Port Connector

1 8

NPG-8719-95F

Table B-5: Stack Director and Stack Station Setup Port Connector Pin

Assignments

5

6

7

8

2

3

Pin No.

1

4

Assignment

No Connect

RD

GND

Unused

Unused

TD

+5

GND

Connectors and Pin Assignments B-9

Stack Director and Stack Station Connectors and Pin Assignments

OBM Port (9-Pin) Connector

Table B-6 describes the OBM connector pin assignments used on the Stack Director and Figure B-8 shows their location.

Figure B-8: OBM Port (9-Pin) Connector

1 5

6

9

NPG-0299-95F

7

8

9

5

6

3

4

Table B-6: OBM Port (9-Pin) Connector Pin Assignments

Pin No.

Assignment

1

2

Data Carrier Detect (DCD)

Receive Data (RXD)

Transmit Data (TXD)

Data Terminal Ready (DTR)

Ground

Data Set Ready (DSR)

Request To Send (RTS)

Clear To Send (CTS)

Not Connected

B-10 Connectors and Pin Assignments

Stack Director and Stack Station Connectors and Pin Assignments

10Base2 Connector

Figure B-9 shows the 10Base2 connector used on the Stack Director.

Figure B-9: 10Base2 Connector

NPB-0626-96F

H8225 50-Ohm Terminator

Figure B-10 shows the 50-ohm terminator needed to terminate the 10Base2 port on the

Stack Director.

Figure B-10: 50-ohm Terminator

50

NPB-0594-96F

Connectors and Pin Assignments B-11

Adapter

Adapter

The following adapter can be used when connecting to the OBM port on the Stack

Director.

H8571-J Adapter

Figure B-11 shows the H8571-J adapter (6-pin MMJ to 9-pin D-Sub connector).

Figure B-11: H8571-J Adapter

B-12 Connectors and Pin Assignments

Appendix C

Product Specifications

Overview

This appendix lists product and acoustical specifications for the DIGITAL

MultiSwitch Hub 624T, Stack Director and Stack Station and connectors used with these products.

In This Appendix

Topic

Product Specifications for the DIGITAL MultiSwitch Hub 624T

Product Specifications for the Stack Director

Page

C-2

C-3

Product Specifications for the Stack Station C-4

Acoustical Specifications C-5

Connectors C-7

Product Specifications C-1

Product Specifications for the DIGITAL MultiSwitch Hub 624T

Product Specifications for the DIGITAL MultiSwitch Hub

624T

Table C-1 lists the product specifications for the DIGITAL MultiSwitch Hub 624T.

Table C-1: Product Specifications for the DIGITAL MultiSwitch 624T

Parameter

Environment

Operating Temperature

1

Relative Humidity

Altitude

• Operating

• Non-operating

Power

Specification

5° C to 50° C (41 ° F to 122 ° F)

10% to 95% noncondensing

Sea level to 2400 m (8000 ft)

Sea level to 4900 m (16000 ft)

31.8 W total power

4.8 A, 5 Vac

0.65 A, 12 Vac

0.0 A, 15 Vac

Physical

Height (installed horizontally)

Height (installed vertically)

Width (installed horizontally)

Width (installed vertically)

Depth

Weight

4.45 cm (1.75 in)

44.45 cm (17.5 in)

44.45 cm (17.5 in)

4.45 cm (1.75 in)

15.25 cm (6.02 in)

1.40 kg (3.00 lb)

Include an additional 2.02 kg (4.45 lb) when attached to a Stack Director.

Include an additional 1.80 kg (4.00 lb) when attached to a Stack Station.

10 G / 10 ms half sine pulse in three orthogonal axes

Shock (Class A/B for products weighing under 100 lbs)

Vibration (Class C)

Certification

5 to 200 Hz sine sweep @ 0.25 G limited by 0.02"

(0.5mm) displacement DA* 200 to 500 Hz sine sweep @ 0.10 G

CE, CSA, FCC, TÜV, UL, VCCI

1

For sites above 2400 m (8,000 ft), decrease the operating temperature specification by 1.8° C for each 1000 m or 3.2°F for each

3200 ft.

C-2 Product Specifications

Product Specifications for the Stack Director

Product Specifications for the Stack Director

Table C-2 lists the product specifications for the Stack Director.

Table C-2: Product Specifications for the Stack Director

Parameter Specification

Environment

5° C to 50° C (4° F to 122° F) Operating

Temperature

1

Relative Humidity

Altitude

• Operating

• Non-operating

Power

• Input:

• Output at 48-pin connector (max):

10% to 95% noncondensing

Sea level to 2400 m (8000 ft)

Sea level to 4900 m (16000 ft)

72 W total input power

100 Vac - 120 Vac @ 1.8A

220 Vac - 240 Vac @ 1.0 A

6.0 A @ 5.2 Vdc

0.7 A @ 12.0 Vdc

Physical

Height

Width

Depth

4.45 cm (1.75 in). The height of the mounting tray is 8.89 cm

(3.5").

44.45 cm (17.5 in)

12.65 cm (4.975 in); 27.9 cm (10.975 in) with a functional module attached.

2.02 Kg (4.45 lb.)

10 G / 10 ms half sine pulse in three orthogonal axes

Weight

Shock (Class A/B for products weighing under 100 lbs)

Vibration (Class C)

5 to 200 Hz sine sweep @ 0.25 G limited by 0.5mm (0.02") displacement DA* 200 to 500 Hz sine sweep @ 0.10 G

CE, CSA, FCC, TÜV, UL, VCCI

Certification

1

For sites above sea level 2400 m (8,000 ft), decrease the operating temperature specification by 1.8° C for each 1000 m or 3.2°F for each 3200 ft.

Product Specifications C-3

Product Specifications for the Stack Station

Product Specifications for the Stack Station

Table C-3 lists the product specifications for the Stack Station.

Table C-3: Product Specifications for the Stack Station

Parameter

Environment

Specification

Operating Temperature

1

Relative Humidity

5° C to 50° C (41 ° F to 122 ° F)

10% to 95% noncondensing

Altitude

• Operating

• Non-operating

Power

• Input:

• Output at 48-pin connector (max):

Sea level to 2400 m (8000 ft)

Sea level to 4900 m (16000 ft)

72 W total input power

100 Vac - 120 Vac @ 1.8A

220 Vac - 240 Vac @ 1.0 A

6.0 A @ 5.2 Vdc

0.7 A @ 12.0 Vdc

Physical

Height

Width

Depth

Weight

Shock (Class A/B for products weighing under 100 lbs)

Vibration (Class C)

4.45 cm (1.75 in). The height of the Mounting Tray is 8.89 cm (3.5").

44.45 cm (17.5 in)

12.65 cm (4.975 in); 27.9 cm (10.975 in) with a functional module attached.

1.75 kg (3.85 lb.)

10 G / 10 ms half sine pulse in three orthogonal axes

Certification

5 to 200 Hz sine sweep @ 0.25 G limited by 0.5mm

(0.02") displacement DA* 200 to 500 Hz sine sweep

@ 0.10 G

CE, CSA, FCC, TÜV, UL, VCCI

1

For sites above sea level 2400 m (8,000 ft), decrease the operating temperature specification by 1.8° C for each 1000 m or 3.2°F for each 3200 ft.

C-4 Product Specifications

Acoustical Specifications

Acoustical Specifications

Table C-4 lists the acoustical specifications for the module with the Stack Station and

Stack Director in English. Table C-5 lists the acoustical specifications for the module in German.

Table C-4: Acoustical Specifications

Declared Values per ISO 9296 and ISO 7779

1

Product Sound

Power Level

L

WAd

, B

Idle/Operate

5.2

Sound Pressure Level

L pAm

, dBA (bystander positions)

Idle/Operate

37 DLSSM-S*

Stack Director

DLSSM-S* + DLMR2-MA

Stack Director + DIGITAL

MultiSwitch Hub 624T

DLSSU-U*

Stack Station

DLSSU-U* + DLMR2-MA

Stack Station + DIGITAL

MultiSwitch Hub 624T

5.5

no measurable noise emissions

5.3

40

37

* indicates one of the following:

Suffix

-SA/-UA

-SD/-UD

-SE/-UE

-SI/-UI

-SK/-UK

Country

United States

Denmark

United Kingdom

Italy

Switzerland

Suffix

-ST/-UT

-SX/-UX

-SZ/-UZ

-S3/-U3

-TJ/-VJ

Country

Israel

Central Europe

Australia

No Power Cord

India

1

Current values for specific configurations are available from Digital Equipment Corporation

representatives. 1 B = 10 dBA.

Product Specifications C-5

Acoustical Specifications

Table C-5: German Acoustical Specifications

Schallemissionswerte Werteangaben nach ISO 9296 und ISO 7779/DIN

EN27779

2

Produkt Schalleistungspegel L

WAd

, B

Leerlauf/Betrieb

5,2

Schalldruckpegel

L pAm

, dBA

(Zuschauerpositionen)

Leerlauf/Betrieb

37 DLSSM-S*

Stack Director

DLSSM-S* + DLMR2-MA

Stack Director + DIGITAL

MultiSwitch Hub 624T

DLSSU-U*

Stack Station

DLSSU-U* + DLMR2-MA

Stack Station +DIGITAL

MultiSwitch Hub 624T

5,5 keine meßbaren Geräuschemissionen

5,3

40

37

* indicates one of the following:

Suffix

-SA/-UA

-SD/-UD

-SE/-UE

-SI/-UI

-SK/-UK

Country

United States

Denmark

United Kingdom

Italy

Switzerland

Suffix

-ST/-UT

-SX/-UX

-SZ/-UZ

-S3/-U3

-TJ/-VJ

Country

Israel

Central Europe

Australia

No Power Cord

India

2

Aktuelle Werte für spezielle Ausrüstungsstufen sind über die Digital Equipment Vertretungen erhältlich.

1 B = 10 dBA.

C-6 Product Specifications

Connectors

Connectors

Table C-6 provides a list connectors for the DIGITAL MultiSwitch Hub 624T.

Table C-6: Connectors for the DIGITAL MultiSwitch Hub 624T

Connectors

8-pin MJ Port Connector

Quantity

24

Table C-7 provides a list connectors for Stack Director.

Table C-7: Connectors for the Stack Director

Connectors

Console Port Connector

10Base2 (ThinWire) Port Connector

OBM (RS-232) Port Connector

UTP/ScTP (Screened Twisted Pair) Port

Connector

Reserved Port Connector

1

1

Quantity

1

1

1

Table C-8 provides a list connectors for Stack Station.

Table C-8: Connectors for the Stack Station

Connectors

Setup Port Connector

IEC Connector (Power)

Quantity

1

1

Product Specifications C-7

Appendix D

Ordering Options

Overview

Introduction

This appendix describes the ordering information for the DIGITAL MultiSwitch Hub

624T.

In This Appendix

Topic

Ordering Options

Ordering Notes

Parts List

Page

D-2

D-3

D-4

Ordering Options D-1

Ordering Options

Ordering Options

Option

Basic Module (see note 1)

Name

DIGITAL MultiSwitch Hub

624T, 24-port 10 Mb/s

Repeater

Stack Station

Part Number

DLMR2-MA

Stack Station or Stack

Director (see note 2)

DLSSU-U*

Expansion Slot 10BaseT

Option (see note 3)

Expansion Slot MM-10

Options (see note 3)

Stack Director

10BaseT Expansion Port

Group

Carrier Card

DLSSM-S*

DLXR1-MA

DLXMC-MA

Rack Mounting Tray (see note 4)

Accessory package includes

1

:

10BaseFL

10BaseT

10Base2

AUI

Reverse AUI

DIGITAL MultiSwitch 600

Rack Mount Tray (included with Stack Director)

• Dust Cap (1)

• Mounting Plugs (2)

• Cable-free stack interconnect card (4)

• Stabilizer Screw (8)

• Pylons (8)

DLXFI-MA

DLXUT-MA

DLXTW-MA

DLXAU-MA

DLXRA-MA

H3108-MU

DLSCC-M4

* indicates one of the following:

Suffix

-SA/-UA

-SD/-UD

-SE/-UE

-SI/-UI

-SK/-UK

Country

United States

Denmark

United Kingdom

Italy

Switzerland

Suffix

-ST/-UT

-SX/-UX

-SZ/-UZ

-S3/-U3

-TJ/-VJ

Country

Israel

Central Europe

Australia

No Power Cord

India

1

Accommodates four stack station levels. These parts are supplied as spares. All needed parts are supplied with the Stack Director or Stack Station.

D-2 Ordering Options

Ordering Notes

Ordering Notes

The following option notes should be considered when ordering DIGITAL

MultiSwitch 600 components.

3

4

Note

1

2

Description

Order basic 600-series functional modules (hubs and/or switches) available for a DIGITAL MultiSwitch 600 system. It will work in a

DIGITAL MultiSwitch 600 or in a DEChub 900.

Order one Stack Station or Stack Director to build a DIGITAL

MultiSwitch 600 System. One Stack Director (DLSSM) is needed to manage a stack of up to eight modules. The Stack Director comes complete with a rack mount kit.

Order necessary Expansion Slot Modular Media Interface Options.

Order mounting tray if you are not ordering a Stack Director and you plan to build a stack of more than one level or you plan to install the stack in a standard 19-inch or relay rack.

Ordering Options D-3

Parts List

Parts List

The following table provides a list of available parts and part numbers for the

DIGITAL MultiSwitch 600 system.

Part

Stack Director (includes):

Stack Director

AC Power Cable

Quick Start Card

Installation Guide

Warranty Card

MultiSwitch 600 Document Sub-Assembly (QC Kit)

Riser Card

Terminator, 50 ohm

Rack Mount Tray Kit

Stack Station (includes):

Stack Station

AC Power Cable

Quick Start Card

Installation Guide

Warranty Card

MultiSwitch 600 Document Sub-Assembly (QC Kit)

Riser Card

Stabilizer Screw (Wing Nuts) - (2)

Wing Nut (Mounting plug) - (2)

Accessories Package

1

:

Dust Cap (1)

Mounting Plugs (2)

Backplane Interconnect Riser Card (4)

Stabilizer Screw (8)

Alignment Pylons (8)

Part Number

DLSSM-S*

DLSSM-M

BN*

EK-DLSSM-QS

EK-DLSSM-IN

EK-NETWW-CM

QC-04RAA-GZ

50-24214-01

H8225-MU

H3108-MU

DLSSU-U*

DLSSU-M

BN*

EK-DLSSM-QS

EK-DLSSM-IN

EK-NETWW-CM

QC-04RAA-GZ

50-24214-01

74-51632-01

74-51644-01

DLSCC-M4

1Accessories Package is included with each Stack Station and Stack Director

D-4 Ordering Options

.

* indicates one of the following:

Suffix

-SA/-UA

-SD/-UD

-SE/-UE

-SI/-UI

-SK/-UK

Country

United States

Denmark

United Kingdom

Italy

Switzerland

Suffix

-ST/-UT

-SX/-UX

-SZ/-UZ

-S3/-U3

-TJ/-VJ

Parts List

Country

Israel

Central Europe

Australia

No Power Cord

India

Ordering Options D-5

Appendix E

Associated Documentation

Overview

Introduction

This appendix describes the associated documentation, how to order additional documentation, and correspondence.

In This Appendix

Topic

Documentation

How to Order Additional Documentation

Correspondence

Page

E-2

E-4

E-5

Associated Documentation E-1

Documentation

Documentation

The following documents provide information relating to the DIGITAL MultiSwitch

612EX module. To order any of the following documents, refer to the section titled

How to Order Additional Documentation.

Title and Order

Number

DIGITAL

MultiSwitch 600

System Installation and

Configuration

EK-DLSSM-IN

DIGITAL

MultiSwitch 600

System

Quick Start

EK-DLSSM-QS

DIGITAL

MultiSwitch Hub

624T Quick Start

EK-DLMR2-QS

Description

Provides installation, setup, and configuration information for the DIGITAL MultiSwitch 600 System

(Stack Director or Stack Station).

Provides a four page guide for installation and setup information for the DIGITAL MultiSwitch 600 System

(Stack Director or Stack Station).

Provides a four page guide for installation, setup, and configuration information for the DIGITAL MultiSwitch

Hub 624T installed in a DIGITAL MultiSwitch 600

System (Stack Director or Stack Station) or DEChub 900

MultiSwitch.

Provides installation, setup, and configuration information for the DIGITAL MultiSwitch 612EX installed in a DIGITAL MultiSwitch 600 System (Stack

Director or Stack Station) or DEChub 900 MultiSwitch.

DIGITAL

MultiSwitch

612EX

Installation and

Configuration

EK-DLMWL-IN

DIGITAL

MultiSwitch Hub

612EX

Quick Start

EK-DLMWL-QS

DEChub 900

MultiSwitch

Owner’s Manual

EK-DH2MS-OM

Provides a four page guide for installation, setup, and configuration information for the Digital MultiSwitch

612EX installed in a Digital MultiSwitch 600 System

(Stack Director or Stack Station) or DEChub 900

MultiSwitch.

Provides installation, use, security, and troubleshooting information for the DEChub 900 MultiSwitch.

E-2 Associated Documentation

Documentation

Title and Order

Number

clearVISN

Installation

AA-QX86B-TK

clearVISN

Overview

AA-QX87B-TK

clearVISN

User’s Guide

AA-QX88B-TK

DEChub Network

Modules 900-Series

Switch Reference

EK-SWTCH-HR

Bridge and

Extended

LAN Reference

EK-DEBAM-HR

Description

Describes how to install clearVISN software. It includes a list of distribution kit contents, system requirements, pre-installation considerations, and the installation procedure.

Provides an overview of clearVISN, an explanation of each clearVISN application, and descriptions of all concepts necessary to understand and use the application efficiently.

Provides information for starting each application, configuring then (when necessary), and general use information.

Describes the functions and features of DIGITAL’s

HUB-based 900-Series switching products.

Describes how bridges are used to create extended local area networks (LANs). This includes the use of bridges in extended LAN configurations, information on LAN interconnections, overall bridge operation, spanning tree, and solving bridge-related problems in a network.

Associated Documentation E-3

How to Order Additional Documentation

How to Order Additional Documentation

To order additional documentation, use the following information.

To Order:

By Telephone

Electronically

(USA. only)

By Mail

(USA and

Puerto Rico)

By Mail

(Canada)

Internationally

Internally

Contact:

USA (except Alaska, New Hampshire, and Hawaii):

1-800-DIGITAL (1-800-344-4825)

Alaska, New Hampshire, and Hawaii: 1-603-884-6660

Canada: 1-800-267-6215

Dial 1-800-DEC-DEMO

(For assistance, call 1-800-DIGITAL)

DIGITAL EQUIPMENT CORPORATION

P.O. Box CS2008

Nashua, New Hampshire 03061

(Place prepaid orders from Puerto Rico with the local

DIGITAL subsidiary: 809-754-7575)

DIGITAL EQUIPMENT of CANADA LTD.

940 Belfast Road

Ottawa, Ontario, Canada K1G 4C2

Attn.: A&SG Business Manager

DIGITAL EQUIPMENT CORPORATION

Attn.: A&SG Business Manager c/o local DIGITAL subsidiary or approved distributor

U.S. Software Supply Business (SSB)

DIGITAL EQUIPMENT CORPORATION

8 Cotton Road

Nashua, New Hampshire 03063

E-4 Associated Documentation

Correspondence

Correspondence

Documentation Comments

If you have comments or suggestions about this document, send them to the Network

Products Business Organization.

Attn.: Documentation Project Manager

E-MAIL: [email protected]

Online Services

To locate product specific information, refer to the following online services:

BBS

WWW

To read the Bulletin Board System, set your modem to 8 bits, no parity, 1 stop bit and dial 508-486-5777 (U.S.)

The DIGITAL Equipment Corporation Network Products Business Home Page on the

World Wide Web is at the following addresses:

North America: http://www.networks.digital.com

Europe:

Australia: http://www.networks.europe.digital.com

http://www.digital.com.au/networks

Associated Documentation E-5

Appendix F

Service Information/Support

Overview

Introduction

This appendix provides service and support information for the Digital MultiSwitch

600 system.

In This Appendix

Topic Page

Warranty Service F-2

Service Information/Support F-1

Warranty Service

Warranty Service

This product has a limited one year RETURN TO DIGITAL WARRANTY. Please refer to the Network Products Warranty and Service Information Notice (EK-

NETWW-CM) that accompanies the product for more detailed information.

Warranty support services include the product advisory assistance, available from

Digital’s Customer Support Centers. This support is designed to help customers who have questions regarding the use and setup of their networking product. This will include:

Assistance in using the product documentation.

Verifying that correct procedures or commands are being used.

Answering general questions on such issues as product compatibility, configuration rules and guidelines, and software/firmware release levels.

Assistance in verifying that product hardware is functioning correctly or malfunctioning.

F-2 Service Information/Support

Appendix G

Accessing and Configuring RMON Groups

Overview

Introduction

This appendix describes how to access the four RMON groups and how to configure the Alarms and Events groups.

In This Appendix

Topic

What is RMON?

Groups Supported

How to Access RMON Groups

Page

G-2

G-3

G-4

Accessing and Configuring RMON Groups G-1

What is RMON?

What is RMON?

RMON is a Remote Network Monitoring Management Information Base (RMON

MIB). RMON gathers a wide variety of statistical information about network operation. A typical network consists of multiple network segments with one RMON agent connected to each segment. RMON gathers this information by examining each packet passed on a network segment. Segment statistics are stored in counters within the module. The counters are continuously updated and reset at powerup.

RMON also captures and stores network traffic information. RMON allows you to examine these captured packets or sequences of packets to identify and isolate network operational software or hardware problems.

A list of RMON features is described in Chapter 1.

NOTE

The online help includes management tasks and information for the RMON

Manager application.

G-2 Accessing and Configuring RMON Groups

Groups Supported

Groups Supported

The four RMON groups supported by this module are Statistics, History, Alarms, and

Events. The following table defines these four groups:

This group...

Statistics

History

Alarms

Events

Allows you to...

Obtain an array of operational statistics including:

• Packets

• Octets

• Broadcasts

• Collisions

• Dropped packets

• Fragments

• CRC alignment errors

• Undersize/oversize packets

• Multicasts

• Jabbers

• 64 octet packets

• 65 to 127 octet packets

• 128 to 255 octet packets

• 256 to 511 octet packets

• 512 to 1023 octet packets

• 1024 to 1518 octet packets

Obtain a historical representation of statistics for individual ports for customized trend analysis.

Set a wide variety of thresholds and sampling intervals on any statistic to create an alarm condition. An alarm will cause an event.

You may set threshold values as:

• An absolute value

• A rising value

• A falling value

• A delta value

Create entries in the monitor log and generate SNMP traps for selected events. You can initiate events by setting an alarm on any counter. The log includes a description and the time of each event.

Accessing and Configuring RMON Groups G-3

How to Access RMON Groups

How to Access RMON Groups

This section provides you with procedures that describe how to access the RMON

Groups.

RMON Group

Statistics and History

Alarms and Events

To Access/Use these Groups ...

Use the clearVISN MultiChassis Manager

Use any SNMP network manager, as described later in this document

Accessing Statistics and History

To access the Statistics and History groups, you must use the clearVISN MultiChassis

Manager as follows:

3

4

Step

1

2

Action

Run the clearVISN MultiChassis Manager.

Double-click on the DIGITAL MultiSwitch Hub 624T module. (The summary screen displays the module’s summary.)

Click on the RMON button to display the Statistics screen.

Click on the HISTORY button on the Statistics screen.

For additional Statistics and History information refer to online help.

Accessing Alarms and Events

This section describes how to set up a condition to be monitored (an alarm) and an event to be generated once that condition has occurred. You use an SNMP network manager to set up conditions and events. For a more complete description of the alarmTable and eventTable, refer to RFC 1757: S. Waldbusser, “Remote Network

Monitoring Management Information Base”, 02/10/1995.

The event group consists of the eventTable and the logTable. The alarmTable contains configuration entries that define a variable, polling period, and threshold parameters.

If an entry is found to have crossed the threshold value, an event is generated that is processed as specified by your entries in the eventTable. Thus, the eventTable controls the generation and notification of events from the device.

G-4 Accessing and Configuring RMON Groups

How to Access RMON Groups

The RMON Alarms and Events MIB objects eventDescription, alarmOwner, and eventOwner support up to 127 characters. MIB object eventCommunity supports up to

32 characters. The maximum number of entries that can be placed in the alarmTable is

20. For the eventTable, the maximum is 32.

Alarm and Event Table Entries

Alarm table entries can only be created for SNMP Integer MIB variables of the following types:

INTEGER

Counter

Gauge

TimeTicks

The following tables list and define the fields that make up an alarm table entry and an event table entry.

Accessing and Configuring RMON Groups G-5

How to Access RMON Groups

Table G-1: Alarm Table Entry Fields

Alarm Table Entry Fields

alarmIndex alarmInterval alarmVariable alarmSampleType alarmValue alarmStartupAlarm alarmRisingThreshold alarmFallingThreshold alarmRisingEventIndex alarmFallingEventIndex alarmOwner alarmStatus

Definition

An index that uniquely identifies an entry

(see note below).

The interval, in seconds, over which the data is sampled and compared with the rising and falling threshold.

The object identifier of the particular variable to be sampled.

The method of sampling the selected variable and calculating the value to be compared against the thresholds.

The value of the statistic during the last sampling period (see note below).

The alarm that may be sent when this entry is first set to valid.

Rising (increasing) threshold for the sampled statistic.

Falling (decreasing) threshold for the sampled statistic.

The index of the eventEntry that is used when a rising threshold is crossed.

The index of the eventEntry that is used when a falling threshold is crossed.

The person who configured this entry and is therefore using the resources assigned to it.

The status of this alarm entry.

NOTE

The alarmIndex and alarmValue objects are read-only. You cannot set these fields. The alarmIndex is implicitly specified when the entry is created. The alarmValue is made available after the current sampling period.

G-6 Accessing and Configuring RMON Groups

How to Access RMON Groups

Table G-2: Event Table Entries

Event Table Entry Fields

eventIndex eventDescription eventType eventCommunity eventLastTimeSent eventOwner eventStatus

Definition

An index that uniquely identifies an entry

(see note below).

A comment describing this event.

The type of notification that will occur when the threshold is being reached.

If an SNMP trap is to be sent, it will be sent to the SNMP community specified.

The value of sysUpTime at the time this event entry last generated an event. (see note below).

The person who configured this entry and is therefore using the resources assigned to it.

The status of this event entry.

NOTE

The eventIndex and eventLastTimeSent objects are read-only. You cannot set these fields. The eventIndex is implicitly specified when the entry is created. The eventLastTimeSent is made available after the current sampling period.

Accessing and Configuring RMON Groups G-7

How to Access RMON Groups

How Traps Work

SNMP-managed devices are able to send trap messages to network management stations. You configure the IP addresses of NMS “trap sinks” that are to receive the

RMON trap messages. For additional information on traps, refer to RFC 1215: M.

Rose, “A Convention for Defining Traps for use with the SNMP”, 03/27/1991.

The trap IP address can be configured on all DEChub 900 modules through the device’s set-up port. With the exception of the DECserver 900 products, the trap IP address can also be added via SNMP set-requests to the device’s private MIB

(pcomSnmpAuthTrapAddressTable).

You can specify that when an alarm condition is reached, a trap is generated and sent to the trap sinks specified. For additional information on how to specify trap generation, refer to eventType RFC 1757: S. Waldbusser, “Remote Network

Monitoring Management Information Base”, 02/10/1995.

G-8 Accessing and Configuring RMON Groups

Glossary

Overview

Introduction

This glossary lists and defines terms used in the DIGITAL MultiSwitch 600 system documentation.

In This Glossary

Topic Page

Terms Glossary-2

Glossary-1

Terms

Terms

This manual uses the following terms

Terms

Ethernet

Hot-swappable

Internet

Protocol (IP)

Address

Media Access

Control (MAC)

Address

DIGITAL

MultiSwitch

600 System

Stack Director

Stack Station

ThinWire

Descriptions

Local Area Network (LAN) compatible with the ISO 8801-

3/ANSI/IEEE 802.3 standards and the Ethernet standards for

Carrier Sense Multiple Access with Collision Detection

(CSMA/CD) local area networks (LANs).

The removal or insertion of a module into either the

DIGITAL MultiSwitch 600 System or the DEChub 900

MultiSwitch without disrupting power to the unit. Do not simultaneously hot-swap more than one module.

Simultaneously inserting or removing more than one module can cause problems with the operation of other installed modules.

The format of an IP address is the standard 4-octet dotted decimal notation, where each octet of the address is represented as a decimal value, separated by a decimal point

(.). For example, 16.20.54.156

The following format represents a Media Access Control

(MAC) address in examples and figures:

08-00-2B-A3-00-00

The DIGITAL MultiSwitch 600 System is a shared-to-switch workgroup system with modular components. The DIGITAL

MultiSwitch 600 System contains Stack Stations and a Stack

Director which provide power, backplane interconnect and

SNMP management to a DIGITAL MultiSwitch 600 System system in a stack configuration. The DIGITAL MultiSwitch

600-series functional modules (hubs and switches) attach to the Stack Station and Stack Director.

The power supply, setup port, backplane, and SNMP agent interface for a functional module and the MultiSwitch 600 system.

The power supply and setup port interface for functional module.

10Base2 coaxial cable 10 Mb/s Ethernet connection.

Glossary-2

Terms

Twisted Pair

10Base2

10BaseT

Terms

Descriptions

Twisted pair cable 10 Mb/s Ethernet connection.

This is wiring similar to that found in the telephone system, consisting of two insulated wires loosely twisted around each other to help cancel out induced noise in balanced circuits.

10Base2 coaxial cable 10 Mb/s Ethernet connection.

Twisted-pair cable 10 Mb/s Ethernet connection.

Glossary-3

Index

Numbers

10Base2 MM-10 cabling 2-18 description 1-19 installing 2-15 jumper configuration 2-11

LEDs A-8 removing cables 7-8

10BaseFL MM-10 cabling 2-18 description 1-20 installing 2-15 jumper configuration 2-13

LEDs A-9 removing cables 7-9

10BaseT connector B-8

10BaseT Expansion Port Group description 1-14 installing 2-4 removing 7-13

10BaseT MM-10 cabling 2-20 crossover connector 2-20 description 1-21 installing 2-15 jumper configuration 2-14

LEDs A-10 removing cables 7-10

A

Acoustical specifications C-5

Add SNMP Trap Addresses menu option 10-14 example dialog 10-14

Adding a Stack Level after Initial Installation 9-

17

Address format

SNMP 10-7

Attaching the DIGITAL MultiSwitch Hub 624T to the Stack Director 2-16

,

3-10

Attaching the Next Level in the Stack 9-10

AUI connector B-5

AUI MM-10 cabling 2-16 description 1-17 installing 2-15 jumper configuration 2-9

LEDs A-6 removing cables 7-7

C

Cabling

10Base2 MM-10 2-18

10BaseFL MM-10 2-18

10BaseT MM-10 2-20

10BaseT ports on DIGITAL MultiSwitch

Hub 624T 3-10

AUI MM-10 2-16 removing cables from MM-10s 7-7

Reverse AUI MM-10 2-17 the DIGITAL MultiSwitch Hub 624T, Stack

Director and Stack Station 2-16 the Stack Director and Stack Station 9-12

Carrier Card description 1-14 installing 2-6 removing 7-12 clearVISN

Dual-Port Redundancy Add Window 6-21

Dual-Port Redundancy Window 6-19 management applications 6-2

Repeater Port Details Window 6-11

Repeater Port Summary Window 6-8

Repeater Security Intrusion Log Window 6-

18

Repeater Security Summary Window 6-15

Repeater Summary Window 6-6 supported managed functions 6-4

Configure IP Installation menu option configuration selections 10-12

Configure IP option 10-12

Configuring the out-of-band management (OBM) port 10-28

Index-1

enabling and disabling RTS selection 10-30 setting the port speed 10-29

Connecting a terminal to the Stack Director setup port 10-6

Connecting Power to a Stack 9-15

Connectors

10BaseT B-8

AUI B-5

Reverse AUI B-6

Crossover cable 3-10

D

DEChub 900

Compare the Power Ratings 3-5

Installing the DIGITAL MultiSwitch Hub

624Tin a DEChub 900 3-4

Seat the Module 3-6

Verify Initial LED Operation 3-7

to

3-8

DEChub 900 MultiSwitch configuration guidelines 6-23

SNMP trap addresses 10-14

DEChub 900 MultiSwitch Installation menu

Add SNMP Trap Addresses menu option 10-

14

Configure IP option 10-12

Delete SNMP Trap Addresses option 10-15

Set In-Band Interface IP Address option 10-

16

Set Out-of-Band Interface IP Address menu option 10-17

Set SNMP Read/Write Community option

10-13

Default mode

Stack Director setup port 10-7

Delete SNMP Trap Addresses menu option sample dialog 10-15

DIGITAL MultiSwitch 600 Installation menu

Downline Upgrade option 10-20

Dump Error Log option 10-19

Reset with Current Settings option 10-10

Reset with Factory Defaults option 10-9

Show Current Settings option 10-11

DIGITAL MultiSwitch 600 System

DIGITAL MultiSwitch Hub 624T 1-7

Downline Upgrade option 10-20 features 1-5

,

8-2 interconnect guidelines 6-22 technology description 1-3

DIGITAL MultiSwitch Hub 624T back panel 1-13 features 1-8 front panel 1-11 front panel LEDs A-11 in a DEChub MultiSwitch 900 6-23 in a DIGITAL MultiSwitch 600 System 6-22 product specifications C-2

Displaying Stack Director settings using the Show Current Settings option 10-11

Downline Upgrade option approximate completion time 10-20 choosing a network interface 10-22 entering the load file name 10-22 entering the load host IP address 10-22 image file name 10-24 initial setup screen 10-21 power loss during upgrade process 10-20 processing for network modules 10-25 processing stages 10-24 selecting the slot to be upgraded 10-21

TFTP load host name 10-24 verifying the upgrade 10-26

Dump Error Log Installation menu option sample dialog 10-19

E

Error log

Dump Error Log Installation menu option 10-

19

Ethernet 1-3

Ethernet MIB 8-8

Event display mode 10-6

F

Firmware

Downline Upgrade option 10-21 upgrading 10-20

Index-2

H

Hub Manager

Add SNMP Trap Addresses option menu option 10-14

Configure IP Installation menu option 10-12

Configure IP Installation menu selections 10-

12

Delete SNMP Trap Addresses menu option

10-15

NMP trap sinks 10-14

Set In-Band Interface IP Address menu option

Set Out-of-Band Interface IP Address menu option 10-17

Set SNMP Read/Write Community menu option 10-13

SNMP trap addresses 10-14

I

Image name 10-24

Initiating self-tests using the Reset with Current Settings option

10-10 using the Reset with Factory Defaults option

10-9

Insert the Backplane Interconnect Riser Card 9-9

Installation menu exiting from menu option 10-7

Installation menu mode 10-6

Installing

MM-10s 2-15 the DIGITAL MultiSwitch Hub 624T into a

DEChub 900 3-4 the DIGITAL MultiSwitch Hub 624T into a

DIGITAL MultiSwitch 600 System

3-2

Internet Protocol (IP) setting the out-of-band address 10-17

L

Load file name 10-22

Load Host IP Address 10-22

M

Management requirements 6-3

Master Control Algorithm 5-4

Master port pair 5-3

MCA (Master Control Algorithm) 5-4

MIBs 8-8

Supported by the DIGITAL MultiSwitch

Hub 624T 6-25

MM-10s

10Base2 1-19

10BaseFL 1-20

10BaseT 1-21

AUI 1-17 installing 2-15 removing cables 7-7 removing from module 7-11

Reverse AUI 1-18

N

Network module downline processing stages 10-24

Downline Upgrade menu option 10-20 upgrading the firmware 10-25 verifying an upgrade 10-26

NMS trap sinks 10-14

Nonresponder port 5-3

Nonvolatile flash memory 10-20

NVRAM parameters resetting to factory defaults 10-9

O

Octet standard 4-octet dotted decimal notation 10-7

Out-of-Band IP address setting 10-17

Out-of-band management (OBM) port configuring 10-28 enabling and disabling RTS selection 10-30 setting the IP address 10-17 setting the port speed 10-29

Index-3

P

Primary link 5-4

Product Description 1-1

Product specifications

DIGITAL MultiSwitch Hub 624T C-2

Stack Director C-3

Stack Station C-4

R

Rebooting the Stack Director using the Reset with Current Settings option

10-10 using the Reset with Factory Defaults option

10-9

Redirect mode 10-6

Redundant-link configuration basic 5-2 complex 5-8 components 5-3 full fault detection 5-11 operation 5-5 partial fault detection 5-9 recommendations 5-13 simple 5-6

Redundant-link pair 5-3

Remote ports 5-2

Remove power cords and cables 11-2

Remove Stack Station module to tray 11-8

Removing the next level in the stack 11-4

Removing Modules from the DEChub 900 7-4

Removing the Dust Covers 2-3

Reset with Current Settings option 10-10 example dialog 10-10

Reset with Factory Defaults option 10-9 example dialog 10-9

Responder port 5-3

Reverse AUI connector B-6

Reverse AUI MM-10 cabling 2-17 description 1-18 installing 2-15 jumper configuration 2-10

LEDs A-7 removing cables 7-8

RMON alarm table entries G-5 description G-2 groups G-3 how to access groups G-4 how to set up alarms G-4 trap messages G-8

RMON Alarms and Events 8-8

S

Secondary link 5-4

Securing Mounting Tray to Rack Mount 9-7

Securing Stack Director to Tray 9-4

Serial number

Stack Director 10-9

Set In-Band Interface IP Address menu option 10-

16 sample dialog 10-16

Set Out-of-Band Interface IP Address option sample dialog 10-17

Set SNMP Read/Write Community option 10-13 example dialog 10-13

Setup port. See Stack Director setup port 10-6

Shared hubs 1-3

Show Current Settings option 10-11 example dialog 10-11

Simple Network Management Protocol (SNMP) address format 10-7

SNMP Agent 8-7

SNMP trap addresses 10-14

Stack Director back panel 8-11 configuring the out-of-band port 10-28

Downline Upgrade menu option 10-20 download processing stages 10-24

Dump Error Log menu option 10-19 enabling and disabling RTS selection 10-30 features 8-7 front panel 8-9 front panel LEDs A-14 product specifications C-3

Reset with Current Settings Installation menu option 10-10

Index-4

Reset with Factory Defaults Installation menu option 10-9 selecting the slot to be upgraded 10-21 setting the OBM port speed 10-29

Show Current Settings Installation menu option

Start Event Display Mode option 10-31 verifying an upgrade 10-26

What is a Stack Director 8-6

Stack Director serial number 10-9

Stack Director setup port connect a terminal to 10-6 default mode 10-7 event display mode 10-6 installation menu mode 10-6 modes supported 10-6 redirect mode 10-6 setting parameters 10-6 terminal setup parameters 10-6

Stack Station back panel 8-14 features 8-12 front panel 8-13 front panel LEDs A-5 product specifications C-4

What is the Stack Station 8-12

Standard 4-octet dotted decimal notation 10-7

Start Event Display Mode option 10-31

Straight-through cable 3-10

Straight-through connectors 2-20

,

3-10

T

Terminal connecting to the Stack Director setup port

10-6 setup parameters 10-6

TFTP load host name 10-24

Trap addresses (SNMP) 10-14

Trap sinks (NMS) 10-14

U

Upgrading the firmware approximate completion time 10-20 choosing a network interface 10-22

Downline Upgrade Installation menu option

10-20 entering the load file name 10-22 entering the load host IP address 10-22 image file name 10-24 initial setup screen 10-21 processing for network modules 10-25 processing stages 10-24 selecting the slot to be upgraded 10-21

TFTP load host name 10-24 verifying the upgrade 10-26

Index-5

Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement

Table of contents