Cabletron Systems VNswitch 900GV Operating and maintenance instructions

DIGITAL VNswitch 900GV
Installation and Configuration
Part Number: EK–DVNGV–IN. A01
September 1998
This manual describes how to install and configure the DIGITAL VNswitch 900GV module.
Revision Information: This is a new document.

Cabletron Systems reserves the right to make changes in specifications and other information contained in this
document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any
such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without notice.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL, INDIRECT,
SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT NOT LIMITED TO LOST
PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN
IT, EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN,
THE POSSIBILITY OF SUCH DAMAGES.
Copyright 1998 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03867
All Rights Reserved. Printed in the United States of America
Order Number: EK-DVNGV-IN.A01
Cabletron Systems is a registered trademark, and clearVISN, the clearVISN logo, DEChub and
VNswitch are trademarks of Cabletron Systems, Inc.
DEC, ThinWire, DIGITAL and the DIGITAL logo are trademarks of Compaq Computer
Corporation.
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 A Computing Device:
This equipment is in the Class A 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 Gegenmaßnahmen verantwortlich
ist.
Avertissement!
Cet appareil est un appareil de Classe A. Dans un environnement résidentiel cet appareil peut provoquer
des brouillages radioélectriques. Dans ce cas, il peut être demandé à l'utilisateur de prendre les mesures
appropriées.

iii
Contents
Preface
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii
Purpose of the Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii
Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii
Organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Associated Documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x
Accessing Online Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Documentation Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Online Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Safety
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv
1 Product Introduction
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
What is the DIGITAL VNswitch 900GV? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Hot Swap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Configuration and Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Bridging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Ethernet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
MIBS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
RMON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
VLAN Secure Domains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

iv
2 Installing the DIGITAL VNswitch 900GV
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Module Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Front Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Back Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
How to Install the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Task 1: Compare the Power Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Task 2: Seat the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Task 3: Verify Initial LED Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Task 4: Connect the LDM Port Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Task 5: Connect the GBIC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Task 6: Connect the Duplex SC Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
3 Installing the Setup Port Cable
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Setup Port Signaling Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Setup Port Device Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Connecting to the Setup Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
4 Configuring the Module in a DIGITAL MultiSwitch 900
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Assigning an IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
DIGITAL MultiSwitch 900 INSTALLATION MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
[9] Start Redirect Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Using Menus to Configure the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
[1] Restart with Factory Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
[2] Restart with Current Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
[3] Show Current Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
[4] Configure IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
[1] Set SNMP Read/Write Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
[2] Add SNMP Trap Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
[3] Delete SNMP Trap Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
[4] Set In-Band Interface IP Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

v
[5] Set Out-of-Band Interface IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
[6] Set Default Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
[5] Go to Local Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
[6] Product-Specific Options (VNswitch 900GV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
[10] Product-Specific Options (MultiSwitch 900). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
5 Removing the Cables, Connector and Module
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Removing the Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Removing the GBIC Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Unseating the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
A Problem Solving
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
Normal Power-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
LED Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3
Problem Solving Using LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-5
B Connectors and Adapters
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1
In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1
Connectors and Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
10BaseT Port (8-pin MJ) Straight-through Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3
H8571-J Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3
H8575-A Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-4
C Product Specifications
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1
In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1
Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-2
Acoustical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-3
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-4

vii
Preface
Overview
Purpose of the Manual
This manual describes how to install and set up the DIGITAL VNswitch 900GV
module. It also provides problem solving, connector and adapter, and pin assignment
information.
Intended Audience
This manual is intended for useby personnel who willinstall and set up the DIGITAL
VNswitch 900GV module.

Organization
viii
Organization
This manual is organized as follows:
Section Description
Chapter 1 Provides an overview of the DIGITAL VNswitch 900GV
module and describes its features.
Chapter 2 Provides instructions for installing the DIGITAL VNswitch
900GV module in a DIGITAL MultiSwitch 900 chassis.
Chapter 3 Provides instructions for installing the setup port on the
DIGITAL MultiSwitch 900 chassis.
Chapter 4 Provides information on how to configure the DIGITAL
VNswitch 900GV module in a DIGITAL MultiSwitch 900
chassis.
Chapter 5 Provides information on how to remove the DIGITAL
VNswitch 900GV module from the DIGITAL MultiSwitch
900 chassis.
Appendix A Provides installation-specific problem solving information
using the LEDs.
Appendix B Provides connector and pin assignment information.
Appendix C Provides product specifications and a parts list.

ix
Associated Documents
Associated Documents
The following documents provide related information. For information on how to
order additional documentation, see the ordering information provided in this preface.
Title and Order Description
DIGITAL VNswitch 900
Series Technical Overview Provides a technical overview of the VNswitch 900 family of high-density switching products.
DIGITAL VNswitch 900
Series Switch Management Describes how to configure, monitor, and manage a VNswitch 900 series module.
DIGITAL MultiSwitch 900
Owner’s Manual
EK-DH2MS-OM
Provides installation, use, security, and
troubleshooting information for the DIGITAL
MultiSwitch 900 (formerly DEChub 900
MultiSwitch).
clearVISN Installation Provides pre- and post-installation information, as
well as actual installation procedures for each
clearVISN application.
clearVISN Overview Provides an overview of the clearVISN software,
an explanation of each application, and
descriptions of all concepts necessary to
understand and use the applications efficiently.
clearVISN User’s Guide Provides information for starting and configuring
each clearVISN application, and general use
information.
OPEN DECconnect
Applications Guide
EC-G2570-42
Provides information to help plan and install
networkingsystemsbased onthe DIGITAL OPEN
DECconnect System and networking products.
Event Logging System
Messages Guide Describes messages logged by the Event Logging System.
Bridge and Extended
LAN Reference
EK-DEBAM-HR
Describes how bridges are used to create extended
local area networks (LANs). The descriptions
include the use of bridges in extended LAN
configurations, information on LAN
interconnections, overall bridge operation,
spanning tree, bridge management, and solving
bridge-related problems in a network.

Conventions
x
Conventions
This book uses the following conventions.
Convention Description
NOTE Contains information of special interest.
Special Type Indicates system output in examples.
Boldface Indicates user input in examples.
<Return> Indicates that you should press the Return key.

xi
Accessing Online Information
Accessing Online Information
Documentation Comments
If you have comments or suggestions about this document, send them to
[e-mail]
Online Services
To locate product-specific information, refer to one of thefollowing World Wide Web
sites:
Americas: http://www.networks.digital.com
or
http://www.cabletron.com/
Europe http://www.networks.europe.digital.com
Asia Pacific http://www.networks.digital.com.au

xiii
Safety
Overview
The cautionsthat must beobserved for thehardware described in this manualare listed
below in English, German, French, and Spanish. Any warning or caution that appears
in this manual is defined as follows:
WARNING Contains information to prevent personal injury.
CAUTION Contains information to prevent damage to equipment.
VORSICHT Enthält Informationen, die beachtet werden müssen um
den Benutzer vor Schaden zu bewahren.
ACHTUNG Enthält Informationen, die beachtet werden müssen um
die Gerate vor Schaden zu bewahren.
DANGER Signale les informations destinées à prévenir les
accidents corporels.
ATTENTION Signale les informations destinées à prévenir la
détérioration du matériel.
AVISO Contiene información para evitar daños personales.
PRECAUCIÓN Contiene información para evitar daños al equipo.

xiv
CAUTION This action deletes all configured settings and replaces
them with factory default values. All configuration
settings will be lost.
ACHTUNG Bei diesem Vorgang werden alle
Konfigurationseinstellungen gelöscht und die
Werkseinstellungen wieder eingesetzt. Alle
Konfigurationsdaten gehen verloren.
ATTENTION Cette action supprime tous les paramètres de
configuration et les remplace par des valeurs prédéfinies.
Tous les paramètres de configuration seront perdus.
PRECAUCIÓN 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.
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.
VORSICHT 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.
DANGER 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.
AVISO 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.

Product Introduction 1-1
Chapter 1
Product Introduction
Overview
This chapter describes the features of the DIGITAL VNswitch 900GV module.
For further technical information on the DIGITAL VNswitch 900GV, refer to the
DIGITAL VNswitch 900 Series Switch Management and the DIGITAL VNswitch 900
Series Technical Overview.
In This Chapter
This chapter contains the following topics:
Topic Page
What is the DIGITAL VNswitch 900GV? 1-2
Features 1-3

What is the DIGITAL VNswitch 900GV?
1-2 Product Introduction
What is the DIGITAL VNswitch 900GV?
The DIGITAL VNswitch 900GV (also referred to in this manual as the module) is a
single Gigabit Ethernet port switch that allows a Modular Media Interface (MMI)
connection using industry standard GBIC (Gigabit Interface Connector). The Gigabit
Ethernet port supports: Gigabit Ethernet Single-Mode Fiber (SMF), and Gigabit
Ethernet Multi-Mode Fiber (MMF).
The DIGITAL VNswitch 900GV network module is a true backbone network switch
that supports complete filtering (including source address, destination address,
protocol type, and VLAN) for greater network control, increased security and
bandwidth utilization, and reduced propagation of network problems.
The module includes a large address table (approximately 8,000 entries) and is fully
IEEE 802.1d standards-compliant, ensuring the high performance and packet integrity
required in large switched networks. The module’s MMI port is IEEE 802.3z
standards-compliant.
When installed into a MultiSwitch 900 chassis and connected to the VNbus, the
module can function as an uplink for other DIGITAL VNswitch 900 series modules.
You can install and configure the module in a DIGITALMultiSwitch 900 chassis. The
module is fully interoperable with other modules when installed in the DIGITAL
MultiSwitch 900 chassis.

Product Introduction 1-3
Features
Features
This section describes the features of the DIGITAL VNswitch 900GV module. For
further information, refer to the DIGITAL VNswitch 900 Series Technical Overview.
Hot Swap With hot-swapping capabilities, you can install or remove the DIGITAL VNswitch
900GV froma DIGITAL MultiSwitch 900 chassis without turning offthe power ofthe
DIGITAL MultiSwitch 900. The MMI cards, also hot-swappable, can be removed
from the module without detaching the module from the chassis.
Configuration and Management
The following configuration and management options are available:
•Auto-configuring at power-up.
•Support for up to 256 internal addresses for management and other purposes.
•Manageable via SNMP and the Command Line Interface (CLI) management via
Telnet or an attached terminal device.
•Upgradeable device firmware (in nonvolatile flash memory) using TFTP with
clearVISN Flash Loader.
•A built-in SNMP management agent. It supports a comprehensive graphical user
interface (GUI) (using the clearVISN MultiChassis Manager) that is identical for
both in-band and out-of-band management.
•Support for up to approximately 8,000 network addresses.
•User-configured rate limiting for broadcast and multicast packets by address and
specified protocol.
•Serves as an uplink to Gigabit backbones for Ethernet, Fast Ethernet, FDDI and
ATM modules installed in a MultiSwitch 900.

Features
1-4 Product Introduction
Bridging The following bridging features and options are available:
•High-speed local traffic filtering and forwarding
•Compliant with spanning tree loop detection protocol, IEEE 802.1d
•Support for multiple spanning trees with the ability to turn off the spanning tree
algorithm on an individual port
Ethernet The Ethernet feature supports the following:
•Full-duplex operation over Gigabit Ethernet port
•IEEE 803.2z pause control.
SNMP The DIGITAL VNswitch 900GV has a built-in SNMP agent and can be managed by
any generic SNMP management application.
•SNMP support for GETs and for the following standard traps, along with many
proprietary traps:
—coldStart
—warmStart
— linkUp
— linkDown

Product Introduction 1-5
Features
MIBS The following MIBs are supported:
— MIB II (RFC 1213)
— Interfaces MIB (RFC 1573)
— Bridge MIB (RFC 1493)
— DIGITAL VLAN V1 MIB
— DIGITAL VLAN V2 MIB
— DIGITAL Comet MIB
—ProteonMIB
— Ethernet MIB (RFC 1643)
— DIGITAL Public Common MIB (pcom)
— DIGITAL Internal Common MIB (icom)
— DIGITAL ELAN Vendor MIB V3.0 (elan MIB)
— RMON MIB RCFs
— DIGITAL VLAN MIB V1
RMON The DIGITAL VNswitch 900GV supports the following RMON groups:
•Events
•Alarms
•Statistics
•History

Features
1-6 Product Introduction
VLAN Secure Domains
The VLAN Secure Domains (VSD) support has the following features:
•Ability to group ports into VSDs
•Ability to join VSDs in different modules in the DIGITAL VNswitch family
across the VNbus
•Support of port groups within a MultiSwitch 900 to create larger distributed
multicast domains
•Support for as many as 32 port-based VSDs across each VNbus
•Support for multiple spanning trees per module, one per VSD
For further information, refer to the clearVISN User’s Guide, the clearVISN Overview,
or the DIGITAL VNswitch 900 Series Technical Overview manual.