Manuals / Cabletron Systems / Computer Equipment / Network Router

Cabletron Systems NB25 E, NB20E user manual Copyright May 1990 by Cabletron Systems Inc

Models: NB25 E NB20E

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NOTICE

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 May 1990 by:

Cabletron Systems Inc.

P.O. Box 6257, E. Rochester, NH 03867-6257

All Rights Reserved

Printed in the United States of America

Order Number: 9030040-02 May 90

Remote LANVIEW, LANVIEW, NB25E, NB20E, and LAN-MD are trademarks of Cabletron Systems Inc.

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Cabletron Systems NB25 E, NB20E user manual Copyright May 1990 by Cabletron Systems Inc

Contents

CABLETRON SYSTEMS, P.O. BOX 6257, ROCHESTER, NH NB20E and NB25 E TWO PORT ETHERNET BRIDGES USER’S MANUALPage Copyright May 1990 by Cabletron Systems Inc FCC NOTICE INSTALLING THE NB20E OR NB25E BRIDGE CONTENTSINSTALLATION REQUIREMENTS SPECIFICATIONSCONTENTS CHAPTER INTRODUCTION 1.1 USING THIS MANUAL1.3 THE NB20E AND NB25E TWO PORT ETHERNET BRIDGE 1.2 GETTING HELP1.4 THE BRIDGE FILTERING METHOD LAN NODE B Figure 1-1 Bridging MethodNODE A NODE C1.5.1 The Root Bridge 1.5 MULTIPLE BRIDGE ENVIRONMENTSFigure 1-2 Multiple Bridging Environments 1.5.2 Primary and Redundant Data Paths1.6 REMOTE LANVIEW 1.7 RELATED MANUALS CHAPTER INSTALLATION REQUIREMENTS SPECIFICATIONS 2.1 LOCATION REQUIREMENTS2.2 NETWORK REQUIREMENTS INSTALLATION REQUIREMENTS/ SPECIFICATIONS 2.3 OPERATING SPECIFICATIONSFRONT PANEL SWITCHES FRONT PANEL INDICATORSFRONT PANEL SWITCHES cont AUI PORT NB20E/NB25ERS232 PORT Worst POWER SUPPLY REQUIREMENTSParameter TypicalSAFETY SERVICEPHYSICAL PROPERTIES CHAPTER INSTALLING THE NB20E OR NB25E BRIDGE 3.2 INSTALLING THE BRIDGE3.1 UNPACKING THE NB20E OR NB25E BRIDGE 3.2.1 Installing the Rack Mount Brackets 3.2.3 Connecting The Bridge To The Network 3.2.2 Cable Support Installation3.2.4 Setting The Mode Switches NB-25E 3.2.5 Connecting The NB20E or NB25E To The Power SourceThe following conditions indicate a problem has been detected with the bridge CHAPTER TESTING AND LANVIEW 4.1 INSTALLATION CHECK-OUTNB-25E 4.2 USING LANVIEW TRANSMIT XMT LED 4.3 USING THE FORWARD BROADCAST SWITCHTESTING AND LANVIEW ON LINE LED STAND BY LED4.4 USING THE ROOT SWITCH