Cabletron Systems ELS100-24TXM User Manual

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SmartSTACK 100

ELS100-24TXM

ETHERNET SWITCH

INSTALLATION

AND

USER GUIDE

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Only qualified personnel should perform installation procedures.

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 SYS TEMS 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 03866-5005 All Rights Reserved Printed in the United States of America Part Number: 9032785 September 1998 ELS100-24TX is a trademark of Cabletron Systems, Inc.

All other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies.

FCC NOTICE

This device complies wit h Part 15 of the F CC ru les. Oper atio n is subje ct to the fo llo wing two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

NOTE: This equipme nt has been tested and fo und to compl y with the l imits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. Th is equipment uses, generates, and can radiate radio frequency energy and if not installed in accordance with the operator’s manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause interfer ence in wh ich case th e user w ill be re quired to correct t he interf erence at his own expense.

WARNING: Changes or mo difications made to th is device which ar e not ex pressly appro ved by the party responsible for compliance could void the user’s authority to operate the equip-

ment.

Printed on Recycled Paper

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DOC NOTICE

This digital apparatus do es no t exce ed the C lass A l imit s for radi o no is e emi ssion s f rom d igital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique édicté par le ministère des Communications du Canada.

VCCI NOTICE

This is a Class A prod uct base d on t he stan dard of the Vo luntar y Con trol Cou ncil fo r Inte rfer ence by Information Technology Equipment (VCCI). If this equipment is used in a domestic environment, radio disturbance may arise. When such trouble occurs, the user may be required to take corrective actions.

CABLETRON SYSTEMS, INC.

PROGRAM LICENSE AGREEMENT

IMPORTANT: Before utilizing this product, carefully read this License Agreement.

This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”) that sets for th your rights and obl igations with respect to the C abletron software program (the “Program”) contai ned in this package. The Program may be contained in firmware, chips or other media. BY UTILIZING THE ENCLOSED PRODUCT, YOU ARE AGREEING TO BECOME BOUND BY THE TERMS OF THIS AGREEMENT, WHICH INCLUDES THE LICENSE AND THE LIMITATION OF W ARR ANTY AN D D ISCL AIM ER OF LI ABI LITY. IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, PROMPTLY RETURN THE UNUSED PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND.

CABLETRON SOFTWARE PROGRAM LICENSE

1. LICENSE. You have the right to use only the one (1) copy of the Program provide d in this package subject to the terms and conditions of this Licens e Agreement.

You may not copy, reproduce or transmit any part of the Program except as permitted by the Copyright Act of the United States or as authorized in writing by Cabletron.

2. OTHER RESTRICTIONS ble the Progra m.

3. APPLICABLE LAW under the laws an d i n th e state a nd fe der a l cou rt s of New Hampshire. You accept the personal jurisdiction and venue of the New Hampshire courts.

. You may not reverse engineer, decompile, or disassem-

. This License Agreement shall be interpreted and governed

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EXCLUSION OF WARRANTY

AND DISCLAIMER OF LIABILITY

1. EXCLUSION OF WARRANTY. Except as may be spe ci fi call y p ro vided b y Cab l etron i n writing, Cabletron makes no warranty, expressed or implied, c oncerning the Program (including its documentation and media).

CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO YOU BY CABLETRON IN WRITING, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE ACCOMPANYING WRITTEN MATERIALS, AND ANY ACCOMPANYING HA RDW AR E.

2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN ADVISED OF THE POSSIBI LITY OF SUCH DA MAGES. BE CAUSE SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR ON THE DURATION OR LIMITATION OF IMPLIED WARRANTIES, IN SOME INSTANCES THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU.

. IN NO EVENT SHALL

UNITED STATES GOVERNMENT RESTRICTED RIGHTS

The enclosed product (a) was developed solely at private expense; (b) contains “restricted computer software” submitted with restricted right s in accordance with Section 522 27-19 (a) through (d) of th e Commerci al Comput er Softwar e - Restri cted Rights C lause and its successors, and (c) in all respects is proprietary data belonging to Cabletron and/or its suppliers.

For Department of Defense un its, th e prod uct is lice nsed wi th “Restr icted Rights” as defi ned in the DoD Supplement to the Federal Acquisition Regulations, Section 52.227-7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is subject to restrictions as set fo rth in subparagr aph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at 252.227-7013. Cabletron Systems, Inc., 35 Industrial Way, Rochester, New Hampshire 03867-0505.

SAFETY INFORMATION

LASER RADIATION AND CONNECTORS

When the connector is in place, all laser radiation remains within the fiber. The maximum amount of radiant power exiting the fiber (under normal conditions) is - 12.6 dBm or 55 x 10

watts. Removing the optical connector from the transceiver allows laser radiation to emit

directly from the opti cal por t. T he ma ximum radia nce fr om th e opt ical port (under wo rst case

-2

conditions) is 0.8 W cm

Do not use opt ical instruments to view the lase r output. The use of optical instruments to view laser output increases eye hazard. When viewing the output optical port, power must be removed from the network adapter.

or 8 x 10 3 W m 2 sr-1.

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DECLARATION OF CONFORMITY

Application of Council Directive(s): 89/336/EEC

73/23/EEC

Manufacturer’s Name: Cabletron Systems, Inc.

Manufacturer’s Address: 35 Industrial Way

PO Box 5005 Rochester, NH 03867

European Representative Name: Mr. J. Solari

European Represent ati ve Add r ess: Cabletron Systems Limited

Nexus House, Newbury Business Park London Road, Newbury

Berkshire RG13 2PZ, England Conformance to Directive(s)/ Product Standards: EC Directive 89/336/EEC

EC Directive 73/23/EEC

EN 55022

EN 50082-1

EN 60950 Equipment Type/Environment: Networking Equipment, for use in a Com-

mercial or Light Industrial Environment.

We the undersigned, hereby declare, under our sole responsibility, that the equipment packaged with this notice conforms to the above directives.

Manufacturer Legal Representative in Europe Mr. Ronald Fotino Full Name Full Name Principal Compliance Engineer Title Title Rochester, NH, USA Location Location

Newbury, Berkshire, England

Managing Director - E.M.E.A.

Mr. J. Solari

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TABLE OF CONTENTS

PREFACE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface i

Purpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

Message Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

Keyboard Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Other Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

1. PRODUCT OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Feature Summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

IEEE 802.1D Bridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Spanning Tree Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Frame Buffering and Fram e Lat ency . . . . . . . . . . . . . . . . . . . . . . . . 7

Software Download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Non-volatile Parameter Storage . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Configuration and Man agement Interfaces . . . . . . . . . . . . . . . . . . . 8

RMON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Port Mirroring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Auto-negotiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Broadcast Thrott ling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

BootP/DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Full Duplex Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Flow Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Virtual LANs (VLANs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Class of Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Application Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Client/Server Network Application. . . . . . . . . . . . . . . . . . . . . . . . .12

Local Backbone Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

2. INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Inspecting Your Shipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Site Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Mounting the Switch on a Table or Shelf . . . . . . . . . . . . . . . . . . . . . . .16

Mounting the Switch on a Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Mounting the Switch in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Installing a Fiber Uplink Module into the Switch . . . . . . . . . . . . . . . . . .19

Connecting a Terminal to t he Console Port . . . . . . . . . . . . . . . . . . . . . 20

Powering the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Power-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

ELS100-24TXM Table of Contents i

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Network Cable Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Copper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fiber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

10Base-T/100Base-TX Po r ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

100Base-FX Fiber Port s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Fiber Uplink Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3. ELS100-24TXM USER INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

User Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Factory Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Menu Hierarchy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

System Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

SNMP Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Switch Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Forwarding Table Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . 33

Spanning Tree Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Spanning Tree Port Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . 37

Spanning Tree Port #n Configuration Menu. . . . . . . . . . . . . . . . . . . . . 38

VLAN Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

VLAN Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

VLAN #n Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

VLAN Port Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Class of Service Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . 43

Port Priority Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Port Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Port Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Switch Statistics Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Switch Summary Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Port Statistics Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

General Information Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Download Software M enu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Save Current Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Return to Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Logout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

4. CONFIGURING & MONITORING THE SWITCH . . . . . . . . . . . . . . . . . . . . . 55

Common Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Setting Password Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Assigning an IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Checking Network Configuration Status. . . . . . . . . . . . . . . . . . . . . . . . 57

Connecting via Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Setting SNMP Management Access . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Viewing Switch Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Configuring Port Mirroring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

ii Table of Contents ELS100-24TXM

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Downloading a Software Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Downloading Via the Ser ial Port . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Downloading Via TFTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Configuring Spanning Tree Parameters . . . . . . . . . . . . . . . . . . . . . . . .61

Configuring VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Configuring Class of Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Configuring Port Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Configuring the Forwarding Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

Configuring Broadcast Cutoff Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Setting a Default Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Configuring BootP/DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

5. SNMP MANAGEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

The SNMP Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

MIB Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

RFC 1213 (MIB-II) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

RFC 1398 (Ethernet MIB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

RFC 1493 (Bridge MIB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

RFC 1757 (RMON MIB). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9

Cabletron Systems Proprietary MIB Extensions . . . . . . . . . . . . . .70

Compiling MIB Extensions: Cabletron Website. . . . . . . . . . . . . . . . . . .73

APPENDIX A. TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . .75

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5

Standards Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Data Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Environmental Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Port Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

10Base-T and 100Base-TX Ports . . . . . . . . . . . . . . . . . . . . . . . . . 77

MDI/MDI-X Crossover Cable Wiring . . . . . . . . . . . . . . . . . . . . . . .78

Power Cord Set Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

General Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Country-Specific Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

APPENDIX B. SPANNING TREE CONCEPTS. . . . . . . . . . . . . . . . . . . . . . . . .81

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1

Spanning Tree Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Spanning Tree Protocol in a Net work . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Spanning Tree Protocol Par a m e t e r s. . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Spanning Tree Protocol Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Communicating Between Bridges . . . . . . . . . . . . . . . . . . . . . . . . .84

Selecting a Root Bridge and Designated Bridges . . . . . . . . . . . . . 84

Selecting Designated Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

ELS100-24TXM Table of Contents iii

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Handling Duplicate Pa ths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Remapping Networ k Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

APPENDIX C. FLOW CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

APPENDIX D. VIRTUAL LANS (VLANS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

VLANs and Frame Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

ELS100-24TXM VLAN Co nfiguration. . . . . . . . . . . . . . . . . . . . . . . . . . 90

VLAN ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Ports in VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

VLAN Egress Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

VLAN Access Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

VLAN Hybrid Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

VLAN Application Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

APPENDIX E. CLASS OF SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

APPENDIX F. ACRONYMS & ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . 97

INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index 99

iv Table of Contents ELS100-24TXM

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PREFACE

Purpose

This guide provides information about the features and applications of the Cabletron Systems ELS100-24TXM switch as well as instr uctions for configuring and monitoring the switch.

Audience

This guide is intended for Et hernet local area network ( LAN) administrators and Management Information Systems (MIS) personnel with the following background:

•

Working knowledge of Ethern et LANs

•

Familiarity with Transmission Control Protocol/Internet Protocol

(TCP/IP) and Simp le Network Management Pr otocol (SNMP)

Conventions

This section describes the conventions used in this guide.

Message Formats

Two types of messages, identified by icons, appear in the text:

A note informs you of special circumstances.

A caution indicates the possibility of equipment damage.

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Keyboard Entries

This guide uses the following conventions for keyboard entries:

When you read “enter,” type the text and press the [Enter] key.

•

Example: Enter the Gatewa y IP add ress and press the [Enter] key.

•

When you read “select,” type the letter associated with the

•

parameter. Example: Select a from the System Configuration Menu to view the

SNMP Configuratio n Men u.

Other Conventions

This guide uses the following typographical conventions:

Initial Caps Menu titles and console menu selections

•

[Enter] Used to designate the Enter or Return key.

•

ALL CAPS Used to designate fields within the console menus.

•

(Example: CONNECTION)

•

courier font Screen messages and user prompts. Selection Describes a user-configurable user interface item.

•

Field Describes a read-only information item

•

Organization

Chapter 1. Product Overview

and rear panel components and applicati on examples.

Chapter 2. Installatio n

lists site requirements, and provides mounting inst ructions. Instructions for making connections and powering up the switch are provided as well.

Chapter 3. ELS100-24TXM User Interface

console menus and lists the factory defaults for system settings. Each of the console menus are presented along with a description of the selections/fields available wi thin each menu.

Chapter 4. Configuring and Monitoring the Swit ch

common tasks and associated steps required to configure the switch, and covers common switch and network considerations required to ensure system integrity.

: Describes the features of the switch, front

: Describes the content of your switch shipment,

: Describes the user interface

: Describes

Chapter 5. SNMP Management

Management Protocol (S NM P) communication protocol is use d to manage the switch, and provides a descri ption of industry standard and proprietary Managed Information Bases (MIBs) supported by the switch.

ii Preface ELS100-24TXM

: Describes how the Simple Net work

Page 13

Appendix A. Technical Specifications

: Provides a list of standards compliance and certifications as wel l as physi cal and operational specifications.

Appendix B. Spanning Tree Concepts

: Describes the operation of the Spanning Tree Protocol and how it is used to r esolve the problems of physical loops in a network.

Appendix C. Flow Control

: Describes how the flow control features are used to provide a mechanism for protecting the switch from overload conditions and to keep additional traffic off the network.

Appendix D. Virtual LANs (VLANs)

: Describes how the switch uses VLANs to create isolated network dom ains, and provides illustrations of VLAN switch configurations.

Appendix E. Class of Service

: Describes how the traffic Class of Service features can be used to assign mission-critical data a higher priority through the switch by delaying less cri tic al t ra ff ic dur ing periods of congestion.

Appendix F. Acronyms and Abbreviations:

Provides definitions f o r a list of common acronyms and abbreviation s used within the user guide and the networking industry.

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1. PRODUCT OVERVIEW

Description

This installation and user guide descr ibes the Cabletron Systems ELS100-24TXM Ethernet switch. The switch is IEEE 802.1D-compliant and supports 24 IEEE 802.3u 100Base-TX Fast Ethernet ports. Each port can alternatively operate as an IEEE 802.3i 10Base-T port. In addition, two of the switch’s ports suppo rt Fast Ethernet over fiber ( IE EE 80 2.3u 100Base-FX) when a modu lar daughtercard is installed.

The Cabletron ELS100-24TXM switch automatically learns end-station addresses from the network and stores them in a Media Access Control (MAC) address forwarding table. Incoming packets are then forwarded to the appropriate output port based on the addresses in the packet. Each port on the switch operates at full Fast Ethernet wire speed with full address and frame filtering.

The Cabletron ELS100-24TXM switch contains advanced features such as Remote Monitoring (RMON), IEEE 802.1Q virtual LANs (VLANs), IEEE 802.1p Class of Service , flow co ntr ol and broadcast throttling. For network management, the ELS100-24TXM switch includes a standardscompliant Simple Netw or k Management Protocol (SNM P) agent. This agent allows network management station applications to collect and present status and perfo rm ance information about a switch as well as providing the ability to conf igure and control functi ons on t he device.

Network management can also be performed in-band using the popular TCP/IP application, Telnet. In addition, a serial console port allows out-ofband management using a PC or an ASCII terminal. The ELS100-24TXM switch is desktop or rack-mountable. LEDs on the front panel provide information about the operating status of the switch. The back panel of the switch contains the power connector and a power switch. Two fans maintain ventilation and cooling for internal switch components.

This chapter provides the foll owing information:

•

Product Description

•

Features

•

Front and Rear Panel Component Descriptions

•

Feature Summaries

•

Application Examples

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Features

•

Ports:

- 24 dual-speed 10Base-T/100 Base-TX ports using RJ-45 connectors (MDI-X); 22 p ort s act ive when using modular slot for 100Base-FX connections

- 1 modular slot for 2 100Base-FX ports using SC connectors

Architecture:

- 8-port 10/100 switch ASIC in a distributed switchin g architecture

- 4.2 Gbps internal switching fabric

- 12 MB packet buffering (512 KB/port)

- 4096 MAC address forwarding table per port; up to 12,288 addresses per system

- IEEE 802.3u auto -negotiation for fu ll/half duplex and 10/100 Mbps speed operation on all RJ- 45 ports

- High performance store-and-forward switching

Performance:

- Forwarding: 3.6 million packets-per-second (64 byte packets)

- Filtering: 3.6 million packets - per-second (64 byte packets)

•

Traffic Management:

- Tag and port-based VLAN s p er the IEEE 802.1Q draft standard - 4094 VLAN IDs recogni zed per switch

- Class of Service support per the IEEE 802.1p draft standard

- Flow control per port: IEEE 802.3x frame-based for full duplex; back-pressure for half duplex

- Broadcast thro ttling for broadcast storm control

•

Network Management:

- SNMP compliant agent: MIB II (RFC 1213); Bridge MIB (RFC

1493); Ethernet MIB (RFC 1398); RMON - Statisti cs, History, Alarm and Event groups per port (RFC 1757); private MIB extensions

- Port mirroring for network monitoring and analysis

-Telnet

- Console port, RS-232, fem ale DB-9 connector, null modem

- BootP/DHCP for IP address configuration

•

LED Indicators

- 10Base-T/100Base-TX Ethernet ports: Link, Activity, 100Mbps Speed, Full Duplex

- 100Base-FX Ethern et por ts: Link and Activity

- System: Power, Test

•

Software:

- Extensive diagnostics for produ ct t esting and troubleshooting

- Upgrades using the front panel console port or in-band with TFTP

2 Product Overview ELS100-24TXM

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Front Panel

Figure 1-1 shows the front panel of the ELS100-24TXM. Table 1-1 defines the ELS100-24TXM front panel components.

Figure 1-1. ELS100-24TXM Front Panel

Table 1-1. Front Panel Components

Name Function

100Base-FX Fiber ports (Ports 1 and 2)*

Fiber Ports 1 and 2 LEDs*

10Base-T/100Base-TX RJ-45 ports (Ports 1-24)*

Ports 1-24 RJ-45 LEDs* Indicates Link, Activity, Speed and Duplex information

LED mode button Button used to switch RJ-45 port LEDs between Link/

Power LED Li

Test LED Li

Console port Female DB-9 connector confi

Fiber ports usin modules (see Table 2-3 for a list of available uplink modules).

Indicates Link and Activity information (see Table 1-2 for details).

Copper ports usin are wired MDI-X.

(see Table 1-2 for details).

Activity mode and 100M/Fu ll Duplex mode. This button has no affect on fiber port LEDs.

hts steady green to indicate power is supplied to the

switch. Off indicates no power is supplied to the switch.

hts steady green after a reset and remains on until successful completion of power-on self tests. Off indicates a successful completion of the power-on self tests.

connection for serial out-of-band mana the console menus.

SC fiber connectors for fiber uplink

RJ-45 port connectors. All ports

ured as a null modem

ement using

* There are 24 total ports on the ELS100-24TXM switch. When the fiber module is installed, these ports become ports 1 and 2, used for fiber connections. Ports 1 and 2 RJ-45 connectors then become disabled.

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Figure 1-2 shows the Link and Activity LEDs for the 2 100Base-FX ports (fiber port LED functions are defined in Table 1-2). The LEDs are positioned to the left of their associated port.

Link LEDs

Activity LEDs

Figure 1-2. 100Base-FX Po rt LEDs

Figure 1-3 shows the Link and Activity port LEDs for 24 10Base -T/ 100Base-TX ports (defau lt configuration). When the fiber module is installed, ports 1 and 2 RJ-45 LEDs become disabled.

Pressing the front panel LED mode button changes the operation of the RJ-45 LEDs to 100M Speed and Full Duplex, as shown in Figure 1-4.

Link

Activity

Link

Activity

10/100 speed

Full/half duplex

10/100 speed

Full/half duplex

The numbers above and below the port LEDs identify the LEDs associated with a specific RJ-45 port.

234

5678

Link

Activity

Link

Activity

13 14 15 16

Link

Activity

Link

Activity

18 19 20

21 22 23 24

10 11 12

Figure 1-3. RJ-45 Port LEDs Default Configuration

10 11 12

234

5678

10/100 speed

Full/half duplex

10/100 speed

Full/half duplex

13 14 15 16

10/100 speed

Full/half duplex

10/100 speed

Full/half duplex

21 22 23 24

18 19 20

Figure 1-4. Port LEDs LED Mode Button Pressed

4 Product Overview ELS100-24TXM

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The port LEDs are grouped to the left of their corresponding RJ-45 ports.

Table 1-2 defines the perf or m ance of the port LEDs for the 10Base -T/ 100Base-TX ports in bot h the default configuration and with the LED mode button pressed.

Table 1-2. Port LEDs Defined

Name Function

Fiber Ports Link LED On: Indicates a valid connection (link) on the associat-

ed port. Link LED Off: Indicates no link on the associated port.

RJ-45 Ports Default Confi tion

RJ-45 Ports LED mode button pressed

ura-

Activity LED flashin receive activity.

Activity LED Off: Indicates the absence of transmit or re ceive activity.

Link LED On: Indicates a vali d co nn ection (l ink) on the associa ted port.

Link LED Off: Indicates no link on the associated port. Activity LED flashin

receive activity. Activity LED Off: Indicates the absence of transmit or re ceive ac-

tivity. Speed LED On: Indicates the port is in the 100Base-TX mode.

Speed LED Off: Indicates the port is in the 10Base-T mode. Duplex LED On: Indicates the port is in the full duplex mode. Duplex LED Off: Indicates the port is in the half duplex mode.

: Indicates the presence of transmit and/or

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Rear Panel

Figure 1-5 shows the ELS100-24TXM rear panel and Table 1-3 defines the rear panel components.

Figure 1-5. ELS100-24 TXM Rear Panel

Table 1-3. Rear Panel Compone nts

Name Function

Power Connector Provides AC power to the switch. Power Switch Allows you to tu rn the switch power on and off. Fan Outlets Air exit vents throu

for ventilation purposes.

Feature Summaries

The following summaries provi de a brief description of ELS100 -24TXM features in areas such as standards compliance, functionality, performance, and options.

IEEE 802.1D Bridge

The ELS100-24TXM swit ch is fully compliant with IEEE 802 .1D transparent bridging speci fi c at ions. An aggregate address table containing 4096 entries per 8 switch ports is provided for learning, filtering, and forwardi ng. The switch can support up to a maximum of 12,288 addresses. Addresses are automatically learned by the switch, and can be individually assigned specific for warding treatment by the network administrator if d esir ed. Forwarding table configuration can be made out-of-band via th e console interface or in-band via SNM P or Telnet. Static and dynamic addresses are both stored in this table. One static address is assigned per port by def ault. The Forwarding Tabl e Configuration screen in the console menus allows you to assign additional static addresses if required.

h which internal fans discharge air

6 Product Overview ELS100-24TXM

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Spanning Tree Protocol

The ELS100-24TXM switch supports the IEEE 802.1D Spanning Tree Protocol. This protocol allows redundant connections to be created between different LAN segments for purposes of fault tolerance. Two or more physical paths between different segments can be created through the switch, with the Spanning Tree Protocol choosing a single path at any given time and disabling all others. If the chosen path fails for any reason, a disabled alternative is activated, thereby maintaining the connection. This prevents network traffic from circulating in an endless loop formed by multiple connections to the same LAN segment.

Spanning Tree parameters are configurable in the Spanning Tree Configuration Menu using the console menus or via SNMP (see Appendix B, “Spanning Tree Concepts,” for more information).

Frame Buffering and Frame Latency

The ELS100-24TXM switch is a store-and-forward switching device. Each frame is copied into switch memory before being forwarded to another port. This method ensures that all forwarded frames conform to a standard Ethernet frame size and have a correct cyclic redundancy check (CRC) for data integrity. This switching method prevents bad frames from traversing the network and using up valuable network bandwidth, as with cut-through switching technology.

To minimize the possibility of dropping frames on congested ports, the ELS100-24TXM switch provides 4 MB of dynamically allocated frame buffering per 8 ports. This buffer space is used to queue packets for transmission on congested networ ks. This is an additional advantage over cut-through switching technology, which drops packets immediately when experiencing collis ions.

Software Download

The ELS100-24TXM switch suppor ts t he industry-standard Trivial File Transfer Protocol (TFTP) for downloading software to th e s wit ch. All switch software is stored in a 2 MB sectored flash ROM. The download feature allows you to easily install software upgrades to the unit. Software can alternatively be downloaded via the serial console port usi ng the XMODEM protocol.

A TFTP or XMODEM software download is invoked via the Download Software Me nu usi ng the conso le menu s. A TFTP dow nlo ad can al so be invoked via SNMP.

Non-volatile Parameter Storage

Important operating param eters such as IP addresses, Spanning Tree configuration, and manag em ent secur it y par a meters, are stored in nonvolatile Flash memory. These values are retained when the switch experiences power interruptions or is powered down for normal maintenance.

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Configuration and Management Interfaces

The ELS100-24TXM swit ch can be managed using any of the following three methods:

Serial console, out-of-band

•

An RS-232 connection, using a DB-9 connector, is supported for outof-band switch management. Serial console management is performed using a terminal, or computer system running communications software. See Chapter 3, “ELS100-24TXM User Interface,” for more detailed information on managing the ELS100- 24TXM switch via the serial console.

Telnet, in-band (over Ethernet)

•

The switch supports management through a Telnet connection using the TCP/IP protocols. Telnet is performed using an ASCII terminal or computer system running communications software. See Chapter 3, “ELS100-24TXM User I nterface,” for more detailed information on managing the switch via the serial console. Global password protection for changing the operating parameters of the switch is provided.

SNMP-based network ma nager, in-band

•

The switch can be managed using SNMP, the most common protocol used today for network management. Standard agent MIBs embedded in the switch provide basic SNMP management through industry-standard SNMP applications.

Management security protection is provided based on SNMP community names. See Chapter 5, “SNMP Management,” for more information.

RMON

RMON (Remote Monitoring) is a facility used to manage networks remotely while providing multi-vendor interoperability between monitoring devices and management stations. RMON is defined by an SNMP MI B. This MIB is divided into nine different groups, each gathering specific statistical information or performing a specific function. RMON-capable devices gather network traffic data and then store them locally until downloaded to an SNMP management station.

The ELS100-24TXM supports four of the nine groups of RMON def ined for Ethernet networks on a per por t basi s. Specifically, these are:

Statistics: a function that maintains counts of network traffic statistics

•

such as number of packets, broadcasts, collisions, errors, and distribution of packet sizes.

History: a function which collects historical statistics based on user-

•

defined sampling intervals. The statistical information collected is the same as the Statistics group, except on a time stamped basis.

Alarm: a function that allows managers to set alarm thresholds based

•

on traffic statistics. Alarm s tr igger other actions throug h the Event group.

8 Product Overview ELS100-24TXM

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Event: a function that operates with the Alarm group to define an

•

action that will be taken when an alarm condition occurs. The event may write a log entry and/or send a trap message.

RMON Statistics group information is displayed on the Port Statistics Screen in the console menus. Additional RMON functionality is available via SNMP.

Port Mirroring

The ELS100-24TXM switch i ncludes the ability to mirror the traffic being switched on any port for purposes of net work traffic analysis and connection integrity. When this feature is enabled, a protocol analyzer or RMON probe is connected to any port in a group of eight. This port is configured to mirror the t ra ff ic f rom any other port in the same group of ports. The groupings are ports 1-8, 9-16 and 17-24. You can only mirror one port to another port at one time. Port mirroring occ urs at the same speed configured for the port (10Mbps-to-10Mbps or 100Mbps-to100Mbps). Port mirroring is configurable in the Switch Configuration Menu using the console menus or via SNMP.

Auto-negotiation

Auto-negotiation is a process that permits the swit ch to automatically select the operational modes of its 10/100 RJ-45 ports. Upon first being connected, the switch detects the speed of the network the port is connected to, either 10Mbps or 100Mbps, and the type of communication setting, half or full duplex. The port is then automatically set by the switch to operate in the proper mode, without user intervention. It is not required that the network device being connected to the switch supports autonegotiation as the ELS10 0-24TXM switch automatic al ly adjusts to the network device’s communicati on settings. Auto-negotiation is configurable in the Port Configuration Menu of the console menus or via SNMP.

Broadcast Throttling

The ELS100-24TXM has the capability to throttle (or limit) the flooding of packets through the switch. Broadcast, multicast, and unknown destination address unicast packets received by the switch are typical ly flooded to all ports on the switch or on a given VLAN. When the number of these types of packets being forwarded is large, the performance of the switch in forwarding packets of other types may suffer. A programm able broadcast cutoff rate param eter allows a rate threshol d to be set in the switch for the forwarding of broadcast and unknown destination address packets. If the cutoff rate is exceeded, further packets of these types are dropped. This capability helps to al leviate broadcast storms, a problem often encountered in Ether net networks. Broadcast throttling is configurable in the Swit ch Conf iguration menu of the console menus or via SNMP.

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BootP/DHCP

The Bootstrap Protocol (BootP) and the Dynamic Host Configuration Protocol (DHCP) provide for the capability of passing configur ation information to hosts on a TCP/IP network. Using this process, network devices do not need to be configured before they can communicate using the TCP/IP protocol suite. The ELS100-24TXM switch uses BootP and DHCP to automatically configure IP address information without requiring access to the console menus. BootP /D HCP operation is configurable using the BootP/DHCP Enable option in the System Configuration Menu of the console menus or via SNMP.

LEDs

The switch port LEDs provide a quick and accurate display of the integrity of switch connections and port mode. The default operation of the RJ-45 LEDs indicates Link (L) and Activity (A) for each of the ports. The operation of these LEDs can be changed by use of the LED mode button on the switch front panel. When the LED mode button is pressed (pressed and held in), the operation of the RJ-45 LEDs changes to indicate 10/100 Mbps speed and full/half duplex operation, respectively. The fiber port LEDs indicate Link (L) and Activity (A) for each of the ports. The fiber port LEDs are not affected by the LED mode button.

Full Duplex Mode

The full duplex mode of operation on a port can double the throughput of switch connections. This mode disables the collision detection portion of the Ethernet Carrier Sense Multiple Access with Coll ision Detection (CSMA/CD) protocol, allowing for two-way traffic. Full dupl ex is configurable using the Duplex Mode par am eter in the Port Menu of the console menus or via SNMP.

Flow Control

Flow control allows you to manage network traffic during con gestion periods and to prevent the loss of packets when port buffer thresholds are exceeded. Flow control also serves to deny access to additional traffic that could add to a congestion condition. The ELS100-24TXM switch supports flow control per th e IE EE 802.3x standard. See Appendix C, “Flow Control,” for more information on this feature.

Virtual LANs (VLANs)

VLANs allow you to connect users to a specific LAN segment regardless of their physical location. The ELS100-24TXM switch supports tagged VLANs per the IEEE 802.1Q draft standard. With fram e tagg ing, a short tag is appended to every frame that crosses the network backbone. The tag identifies which VLAN the frame belongs to. See Appendix D, “Virtual LANs,” for more inform ation.

10 Product Overview ELS100-24TXM

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Class of Service

Class of Service support allows you to assign a higher priority to selected traffic passing through the switch. The ELS100-24TXM switch supports Class of Service attributes per the IEE E 802.1p draft standard using a priority queuing mechanism. This feature ensures that tr af fic during congestion periods will not interfere with traffic assigned a higher priority. Traffic assigned a lower priority is subj ect to discard when memory is in short supply. See Appendix E, “ Cl ass of Service,” for more infor m ati on.

Application Examples

The exploding popularity of the Internet and of corporate intranets, as well as new, high-bandwidth desktop applications, are driving the demand for Fast Ethernet. The increase in multimedia traffic and the need to support legacy protocols alongside new, data intensive applications is driving the need for network segmentat ion and traffic prioritizati on.

The ELS100-24TXM switch is ideal for meeting the needs of today’s high performance networks. The switch’s low cost and high port count makes it attractive and affordabl e for dedicated 10/100Mbps connections to the desktop. In addition, extensive features, including redundant links, traffic Class of Service and VLAN capability, provide the management needed for the workgroup and local backbone.

The following sections illustrate the ELS100-24TXM switch employed in application examples:

Client/Server Network

•

Local Backbone

•

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Client/Server Network Application

To improve workstation per for m ance in a client/server environment, the ELS100-24TXM switch can be configured to provide 200 Mbps full duplex Fast Ethernet connections to servers by connecting each to a dedicated switch port (Figure 1-6). Users can be accommodated through connections to hubs, both at 10Mbps and 100M bps speeds, through 10Mbps switches with 100Mbps uplinks, or thr ough direct connections. The fiber uplinks are available to connect the switch to a remote location, such as another building floor or a separate building.

Figure 1-6. Client/Server Ne twork Applicat io n

12 Product Overview ELS100-24TXM

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Local Backbone Application

The ELS100-24TXM switch can be used in a local backbone application, connecting network segments together and providing file-server access (Figure 1-6). Workgroup hubs are provided with a single connection to the switch while servers are put on dedicated 100 Mbps ports. Routers and other networking devices can connect of f of the switched backbone as well. The fiber uplinks are available to connect the switch to a remote location, such as another building floor or a separate buil ding.

Figure 1-7. Local Backbone Appli cat ion

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Page 29

2. INSTALLATION

Inspecting Your Shipment

When you receive the shipment of your switch, check the package contents and make sure you have the following items:

•

ELS100-24TXM Fast Ethernet switch

•

Fiber port protective plugs inserted into switch

•

Mounting ears and mounting screws

•

Power cord

•

This document

Site Requirements

Before you install the switch, make sure the site meets the following requirements:

•

Mounting Provide a flat table, wall or shel f sur face, or an optional 19 in. (48.3

cm) equipment rack. Use an EIA standard equipment rack that is grounded and physically

secure.

•

Power source Provide a power source within six feet (1.8 m) of the installation loca-

tion. This source must provide 100 VAC to 240 VAC, and 50 Hz to 60 Hz power, with a 100 VA minimum. Power specifications for the switch are shown in Appendix A, “Specifications.”

Primary voltage selection within the above ranges is automatic and requires no user action.

•

Environmental Install the ELS100-24TXM switch in a dry area, with adequate air cir-

culation. Avoid placing the switch in direct sunlight or near other heat sources, such as hot-air vents. For temperatur e and humidity specifications, see Appendix A, “Sp e cif ications.”

•

Ventilation Do not restrict airflow by covering or obstructing air inlets on the side

of the switch or the rear panel in ternal air fan exits.

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Mounting the Switch on a Table or Shelf

Mount the switch on a table or shelf in a position whi ch allows access to the front panel RJ-45 ports, visi bility of the port LEDs, and access to the power cord. Make sure that the mounting surface can safely support the switch and that there is adequate space around the switch for ventilation and cooling.

16 Installation ELS100-24TXM

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Mounting the Switch on a Wall

The switch ships with two (2) mul ti -position mounting ears and four (4) mounting screws.

The mounting screws are used to attach the mounting ears to the switch. Once the ears are attached to the switch, you will need to provide appropriate screws to mount the switch to the wall.

Figure 2-1 shows the orientation of the m ount ing ears for attaching the ears to the switch for a wall mount application. Be sure that the wall surface can safely support the switch.

Do the followi n g:

Mount one of the ears to the switch using two (2) of the supplied screws. Repeat this step for t he other side of the switch.

Mount the switch to the wall using appr opriate screws.

Figure 2-1. Mounting the Switch on a Wall

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Mounting the Switch in a Rack

The switch ships with two (2) multi-position mounting ears and four (4) mounting screws.

The mounting screws are used to attach the mounting ears to the switch. Once the ears are attached to the switch, you will need to provide appropriate screws to mount the switch in a rack.

Figure 2-2 shows the orientation of the mounting ears for attaching the ears to the switch for a rack mount application. Mount the switch with the front panel facing forward. Do the following:

Mount one of the ears to the swit ch using two (2) of the supplied screws. Repeat this step for the ot her side of the switch.

Slide the switch into the rack and align the holes in the rack mounting ears with the holes in the rack rai ls.

Insert and tighten appropri ate rack-mounting screws (not provided).

Figure 2-2. Mounting the Switch in a Rack

18 Installation ELS100-24TXM

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Installing a Fiber Uplink Module into the Switch

The fiber uplink module op ti on permits you to enable 100Bas e- FX fiber connections to the switch. A 2 port fiber module can be installed into the modular slot on the left side of the switch (Figure 2-3).

To install the fiber module into the switch, do the following:

Turn off power to the switch.

Remove the blank metal pla te f rom the left side of the switch by unscrewing the two mounting screws.

While maintaining a firm grip on the fiber connectors, insert the fiber module card into the modular slot, with the module components facing upwards. Insert the module into the slot uniformly. There are no card guides. The connector on the fiber module mates with the connector inside the switch. Press firmly until the module is properly seated.

Figure 2-3. Installing a Fiber Module into the Switch

Position the mounting plate (shipped with the fiber module) over the port connectors and align the mounting plate hole with the modular port holes.

Insert the 2 mounting screws and fasten.

Turn on power to the switch.

9032785 Installation 19

Page 34

Connecting a Terminal to the Console Port

The console port is a serial RS-232 interface port that enables a connection to a terminal for performing switch monitoring and configuration functions. The terminal may be a PC or workstation running terminal emulation softw are, or a dumb terminal configured as a Data Terminal Equipment (DTE) connection. Alternatively, this port can be connected to an external modem t o enable remote dial-in managem ent .

If you connect a terminal to the console port prior to powering the switch, you can observe the progress and results of the power-up diagnostics as the switch goes through its initialization process.

The console port connector is configured as a female null modem connection using a female DB-9 ( see Table A-1 for pinouts). A standard straight-through wired R S- 232 cable is typically all that is neede d to connect to this interface . Any cable connected to the console port must be shielded to comply with emissi ons regulations and requirements.

To connect the ELS100-24TXM console por t to a terminal, do the following:

Connect a terminal to the console port using an interface ca ble (Figure 2-4).

Figure 2-4. Connecting a Terminal to the Console Port

Connect the male connecto r of the in terface cable directly to the switch console port and tighten the capti v e retaining screws.

Connect the other end of th e interface cable to a terminal (i n some instances, an adapter may be required to make this connection).

From your terminal, start the te rminal emulation program.

20 Installation ELS100-24TXM

Page 35

Configure the terminal to the following communication settings: 9600

baud, no parity, 8 data bits, 1 stop bit, no hardware flow control, ASCII character set.

Powering the Switch

To supply power to the switch, do the fol lowing:

Connect the power cord to the switch and to a grounded three-prong

wall outlet (Figure 2-5) . See Appendix A, “Power Cord Set Requirements,” for more information regarding specific international power cord requireme nts.

Figure 2-5. Connecting the Power Cord to the Switch

Turn on the power switch.

The Power LED lights green (see Figure 1-1). If it does not, check to make sure that the power cable is plugged in correctly and that the power source is good.

Power-Up

When you turn the power on, the switch cond uct s a series of har dw are and software tests to verify correct operation. If a terminal or computer is connected to the console port, the results of the tests are displayed on the screen. If you want to display the results of the tests after the switch has already been turned on, turn the power switch off and then back on.

The switch performs two basic types of tests at power-up. During this time, the Test LED (see Figure 1-1) lights steady green. These tests are:

Serial port

•

The serial console port test is the first test performed. If the switch fails this test, no further tests are performed, and the console displays no information.

9032785 Installation 21

Page 36

Memory

•

Memory tests on the CPU RAM are performed after the serial port test. No results are displayed on the console.

After these two tests are performed, the operational software of the switch is loaded. A series of more extensive diagnostic tests are then conducted during which the Test LED remains lit. The results of the tests are displayed on the terminal. If all tests pass, the Test LED turns off. When all tests are complete, the system is functional and the user interface is ready to receive commands at the console.

Network Cable Requirements

Copper

Table 2-1 specifies the cable types and length constraints for the copper interfaces on the ELS100-24TXM.

Table 2-1. Copper Cable Specif ic ations

Interface Type Cable Requirement Maximum Length

10Base-T Cate

100Base-TX Cate

ory 3 or 5 Unshielded Twisted

Pair (UTP)

ory 5 UTP 100m (328 ft.)

100m (328 ft .)

Fiber

Table 2-2 specifies the fiber types and length constraints on the ELS100-24TXM.

Table 2-2. Fiber Specifi cations

Interface Type Fiber Type Fiber Diameter

100Base-FX multi-mode 62.5 2,000m (6,560 ft.) 100Base-FX sin

le-mode 9 20,000m (65,600 ft.)

(microns)

Maximum Length

22 Installation ELS100-24TXM

Page 37

10Base-T/100Base-TX Ports

The 10Base-T/100Base-TX ports use RJ-45 connectors. Figure 2-6 shows an RJ-45 connector being inserted into a port.

Figure 2-6. Inserting an RJ-45 Connector into a Port

The 10Base-T/100Base-TX ports interface to UTP cabling for connection to 10Base-T or 100Base-TX network segments or end-stations. These UTP connections meet the requirements of ISO 8877, specified by 10Base-T, Section 14 of the IEEE 802.3 specification. The ports are wired with the MDI-X function implemented. Workstations or servers can be connected to the ELS100-24TXM switch using standard straight-through wired cables.

For connections to hubs or other swit ches, a crossover cable may be necessary (refer to the “MDI/MDI-X Crossover Cable Wiring” section in Appendix A). See Table A-2 fo r 10Base-T/100Base-TX connector pin assignments.

9032785 Installation 23

Page 38

100Base-FX Fiber Ports

The 100Base-FX Fiber ports use SC connectors. Figure 2-7 shows an SC fiber connector being insert ed into a fiber port on the ELS100-24TXM.

Figure 2-7. Inserting an SC Fiber Con nect or into a Fiber Port

Depending on the fiber uplink module employed (see Table 2-3), these ports support either multi- mode 62.5/125µm fiber or single-mode 9/ 125µm fiber. The 100Base-FX ports use SC fiber connectors. The SC fiber connectors are configured as a receive (RX)/transmit( TX) pair with the RX connector positioned on the left side of the port and the TX connector on the right side of the port.

Fiber Uplink Modules

Table 2-3 provides information for the three different 2 port fiber uplink modules (daughtercards) available for the ELS100-24TXM.

Table 2-3. Fiber Uplink Modules

Part Number Functions Description

EPIM100-2F2 100Base-FX-MM

100Base-FX-MM

EPIM100-2F3 100Base-FX-SM

100Base-FX-SM

2 port multimode (M M) fiber uplink module

SC fiber connectors.

usin

2 port sin usin

lemode (SM) f ibe r upl ink modu le

SC fiber connectors.

EPIM100-2F4 100Base-FX-SM

100Base-FX-MM

24 Installation ELS100-24TXM

2 port (1 SM and 1 MM) fi ber upli nk module usin

SC fiber connectors.

Page 39

3. ELS100-24TXM USER INTERFACE

Overview

When you have connected a terminal to the console port, or used Telnet to access the switch over the network, access is gai ned to the console menus. These menus allow you to reconfigure the switch from its factory default settings, as well as to monitor switch status and performance. The menus have a layout similar to the sample Main Menu shown in Figure 3-

1. The information is divi ded into the following parts:

•

Menu Identification (i ncludes model number)

•

Menu Name (includes access privileges)

•

Selectable Items listed by letters

•

Screen Prompt for menu selections an d entr y of fie ld par am et ers, and Message Area for display of next entry opt ion, parameters, or error messages.

Menu ID

Menu name

Selectable

items

Screen prompt

and message

area

Cabletron Systems E LS100-24TXM Access Control: READ/WRITE MAIN MEN U

a. System Conf ig uration Me nu b Switch Configurat io n Menu c. Port Menu d. Switch Stati s tics Screen e. General Information Screen f. Download Software Menu g. Save Current Conf iguration h. Return to Default Configuration i. Logout j. Reset

Enter Selection:

Figure 3-1. Sample Main Menu

9032785 ELS100-24TXM User Interface 25

Page 40

User Access

There are two modes of access to the user interface: READ-ONLY and READ/WRITE. READ-ONLY access allows you to view switch information, but not modify any operating parameters. READ/WRITE access allows you to both read and modify switch information. You are required to login with a password before obtaining READ/WRITE access. If no password is entered (press only the [Enter] key), you are logged in with READ-ONLY access. default settings, allowing full READ/WRITE access until a password is set.

To use the console menus, do the following:

Type the letter associated with the desired option. If the selected item is a submenu ti tle, the submenu is displayed

when you enter the letter.

Enter the parameter requested by the screen prompt.

If the selected item is a parameter, the system displays a prompt for the entry of a new parameter value . If the value entered is invalid, a beep sounds, or a message displays, requesting you to enter a valid value.

No password is configured in the factory

26 ELS100-24TXM User Interface ELS100-24TXM

Page 41

Factory Defaults

ging

Table 3-1 lists the factory default settings for the switch configurati on parameters. Each of these para meters can be changed via the console menus or Telnet.

Table 3-1. Factory Default Settings

Parameter Default Value

Active A Auto-ne Broadcast Cutoff Rate 500000 BootP/DHCP Enable Yes Brid

e Priority 32768 Class of Service Enable No Class of Service Port Priority 0 Class of Service Priority

Threshold Flow Control Enable No Forward Delay 15 Full Duplex Yes Hello Time 2 Max A Password <none> Path Cost 10 for 100Mbps s peed ports

Time 300

otiation Enab le Yes

e20

100 for 10Mbps speed ports Port Enable Yes Port Priority 128 Port Speed 100 Port Mirrorin Screen Timeout 0 SNMP Private Community Name private SNMP Public Community Name public Spannin Terminal Baud Rate 9600 Terminal Hard w ar e Flo w C ont rol No VLAN Enable No VLAN Port Type Access

9032785 ELS100-24TXM User Interface 27

Enable No

Tree Protocol Enable No

Page 42

Menu Hierarchy

Figure 3-2 shows the ELS100- 24TXM switch user interface menu hierarchy.

System Configuration Menu

Switch Configuration Menu

Port Menu

Switch Statistics Screen

General Information Screen

SNMP Configuration Menu System Name System Location System Contact IP Address Subnet Mask Default Gateway BootP/DHCP Enable Screen Timeout (minutes) Password Terminal Baud Rate

Forwarding Table Configuration Menu Spanning Tree Configuration Menu VLAN Configuration Menu Class of Service Configuration Menu Forwarding Table Aging Time (seconds) Broadcast Cutoff Rate Port Mirroring Enable Mirrored Port Mirroring Port

ID Port Name Enable Status Link Status Auto Negotiated Status Full Duplex Status Speed (10/100Mbps) Port Type Flow Control Configure

ID Transmitted Received Forwarded Filtered Dropped Errored Switch Summary Port Statistics

Software Version Serial Number Base MAC Address Up Time (minutes) Power Up Count

SNMP Private Community Name SNMP Public Community Name Trap Destination #1-4 Community Name #1-4

Display Table Make Entry Static Add Static Entry Delete Static Entry Modify Static Entry Search by Port# Search by MAC Address

Spanning Tree Protocol Enable Port Configuration Menu Hello Time (seconds) Forward Delay (seconds) Max Age (seconds) Bridge Priority

VLAN Enable VLAN Menu VLAN Port Menu

Class of Service Enable Priority Threshold Configure Port Priority

Port Name Port Enable Flow Control Enable Auto-negotiation Enable Full Duplex Port Speed

Frames Transmitted Frames Received Frames Forwarded Frames Filtered Frames Dropped Frames Errored

Port #n Statistics

Port ID Port Name Path Cost Port Priority Port State Select Port

ID VLAN Name Ports in VLAN VLAN Egress Ports Configure

Port ID Port Name Type Modify Port Type

Port ID Port Name Priority Default Configure

Download Software Menu

Save Current Configuration

Return to Default Configuration

Logout

Reset

Frames Transmitted Collisions Frames Received Late Collisions Frames Forwarded CRC/Alignment Errors Frames Filtered Undersized Frames Frames Dropped Oversized Frames Broadcasts Transmitted Fragments Broadcasts Received Jabbers Multicasts Transmitted 64 Byte Frames Multicasts Received 65 to 127 Byte Frames Bytes Transmitted 128 to 255 Byte Frames Bytes Received 256 to 511 Byte Frames Pause Frames Transmitted 512 to 1023 Byte Frames Pause Frames Received 1024 to 1518 Byte Frames

Figure 3-2. ELS100-24TXM User Interface Menu Hierarchy

28 ELS100-24TXM User Interface ELS100-24TXM

Page 43

Main Menu

The Main Menu is the first screen seen after successfully logging in to the system. Figure 3-3 shows the Main Menu and the accompanying ta ble

describes the Main Menu.

MAIN MENU Access Control: READ/WRITE

a. System Configuration Menu b Switch Configuration Menu c. Port Menu d. Switch Statistics Screen e. General Information Screen f. Download Software Menu g. Save Current Configuration h. Return to Default Configuration i. Logout j. Reset

x. Previous Menu

Enter Selection:

Figure 3-3. Main Menu

Selection Description

System

uration Menu

Confi Switch

Confi

uration Menu

Port Menu Shows the confi

Switch Statistics Screen

General Information Screen

Download Software Menu

Save Current

uration

Confi Return to Default

Configuration

Contains commands and parameters that reflect the

uration of the switch related to management.

confi Provides access to informa tion and paramet ers affectin

function of the switch, i. e. the m ovement of packet s throu the switch. For example, you can c onfi ble, Spannin

Tree, and virtual LANs (V LAN s) .

and allows you to modify switch port operation. Presents switch-level and port-level statistics.

Displays the system software version, switch serial number, base MAC address, system up time and power-up count.

Contains paramete rs and commands for initiatin download to up

Saves current switch operatin memory.

Restores switch operatin You must reset the switch for activate default parameters.

lobal

the

ure Forwarding Ta-

uration of the i ndividual p orts on the switch

a software

rade the switch operating software.

parameters to non-volatile

parameters to factory defaults.

out Logs out of the console inter face. Once you logout, you must

enter a password before you can access the console interface a

Reset Performs a software reset of the switch by restartin

tem software and reloadin

9032785 ELS100-24TXM User Interface 29

ain.

the sys-

all operating parameters.

Page 44

System Configuration Menu

The System Configuration Menu enables modif ication of system-level switch configuration parameters. Select a from the Main Menu to view the System Configuration Menu. Figure 3-4 shows the System Configuration Menu and the accompanying table descr ibes the System Configurat ion

Menu.

SYSTEM CONFIGURATION Access Control: READ/WRITE a. SNMP Configuration Menu

b System Name c. System Location d. System Contact e. IP Address 000.000.000.000 f. Subnet Mask 000.000.000.000 g. Default Gateway 000.000.000.000 h. BootP/DHCP Enable Yes i. Screen Timeout (minutes) 0 j. Password None k. Terminal Baud Rate 9600 l. Terminal Hardware Flow Control No

x. Previous Menu Enter Selection:

Figure 3-4. System Configuration Menu

Selection Description

SNMP Confi System Name The switch administrative name (1-36 character range). System Location The physical switch location (1-36 character range). System Contact The switch contact person (1-36 character range). IP Address The IP address of the switch. Subnet Mask Subnet mask associated with the switch IP address. Default Gateway The default gateway (or router) to which the switch sends

BootP/DHCP Enable Allows you to enable (Yes) or disable (No) the BootP and

Screen Timeou t (minutes) The duration of time before a seri al console or Teln et

Password Allows “read/write” access to the user interface, via the

Terminal Baud Rate Serial console baud rate (2400, 9600 or 19200). Terminal Hardware Flow

Control

uration Menu Menu for configuring SNMP-related parameters.

IP packets destined for a different subnet.

DHCP protocols for automatically confi

uring the

switch’s IP address information.

session terminates due to user inactivity (0-65535 numeric ran

e). A value of “0” means that the screen will

not terminate at any time.

serial console or Telnet (1-10 character ran

e).

Allows you to en able (Yes) or d isable (No) h ardware flow control on serial console interface. Si

nals DTR, RTS and CTS are used for this purpose. Flow control should be enabled if usin

external modem.

30 ELS100-24TXM User Interface ELS100-24TXM

Page 45

SNMP Configuration Menu

The SNMP Configuration Menu allows you to modify SNMP-related configuration parameters. Sel ect a from the System Configuration Menu to view the SNMP Configurat ion Menu. Figure 3-5 shows the SNM P Configuration Menu and accompanying table describes the SNMP

Configuration Menu.

SNMP CONFIGURATION Access Control: READ/WRITE

a. SNMP Private Community Name private b. SNMP Public Community Name public c. Trap Destination #1 000.000.000.000 d. Community Name #1 public e. Trap Destination #2 000.000.000.000 f. Community Name #2 public g. Trap Destination #3 000.000.000.000 h. Community Name #3 public i. Trap Destination #4 000.000.000.000 j. Community Name #4 public

x. Previous Menu

Enter Selection:

Figure 3-5. SNMP Configuration Menu

Selection Description

SNMP Private Community Name

SNMP Public Community Name

Trap Destination #1 The IP address of trap destination #1 wher e SNMP trap mes-

Community Name #1 The SNMP community na me to use for traps forwarded to trap

Trap Destination #2 The IP address of trap destination #2 wher e SNMP trap mes-

Community Name #2 The SNMP community na me to use for traps forwarded to trap

Trap Destination #3 The IP address of trap destination #3 wher e SNMP trap mes-

Community Name #3 The SNMP community na me to use for traps forwarded to trap

Trap Destination #4 The IP address of trap destination #4 wher e SNMP trap mes-

The community name for read/write SNMP access to the device (1-10 character ran

e; the default name is: “private”).

The community name for read only SNMP access to the device (1-10 character ran

es are forwarded.

e; the default name is: “public”).

destination #1.

es are forwarded.

destination #2.

es are forwarded.

destination #3.

es are forwarded.

Community Name #4 The SNMP community na me to use for traps forwarded to trap

destination #4.

9032785 ELS100-24TXM User Interface 31

Page 46

Switch Configuration Menu

The Switch Configuratio n Menu allows you to modify switchi ng- related configuration parameters. Select b from the Main Menu to view the Switch Configuration Menu. Fig ure 3-6 shows the Switch Configur at ion Menu

and the accompanying table describes the Switch Configuration Menu.

SWITCH CONFIGURATION Access Control: READ/WRITE a. Forwarding Table Configuration Menu

b. Spanning Tree Configuration Menu c. VLAN Configuration Menu d. Class of Service Configuration Menu e. Forwarding Table Aging Time(seconds) 300 f. Broadcast Cutoff Rate 500000 g. Port Mirroring Enable No h. Mirrored Port 2 i. Mirroring Port 1 j. Transmit Data Mirror Enable Yes k. Receive Data Mirror Enable No

x. Previous Menu Enter Selection:

Figure 3-6. Switch Configuration Menu

Selection Description

Forwardin Confi

Spannin

Table

uration Menu

Tree Configuration

Menu VLAN Confi Class of Service Confi

uration Menu Menu for configuring the VLAN operation of the switch.

uration

Menu Forwardin

Table Aging Time Time in seconds until entries in the filter table are aged

Broadcast Cutoff Rate Per second rate past which broadcast and destination

Port Mirrorin

Enable Allows you to enable (Ye s) or di sab le ( N o) port mirror-

Mirrored Port The source port for the data to be mirrored. Mirrorin

Port The destination port for the data to be mirrored.

Transmit Data Mirror Enable * Allows you to enable (Yes) or disable (No) the mirror-

Receive Data Mirror Enable * Allows you to enable (Yes) or disable (No) the mirror-

* Only one of these options can be enabled at any given time. Changing the setting of one of these options automatically changes the setting of the other option.

Menu for confi

uring the switch forwarding table.

Menu for configuring the switch Spanning Tree operation.

Menu for configuring Class of Service for the switch.

out if not accessed (10-1,000,000 second ran

e).

unknown unicast frames a r e not flooded on each

roup of 8 ports on the switch (100-500,000 frames per

second ran

of data transmitted out the mirrored port.

of data received by the mirrored port.

e).

32 ELS100-24TXM User Interface ELS100-24TXM

Page 47

Forwarding Table Configuration Menu

The Forwarding Table Configuration Menu allows you to view and modify forwarding table parameters. The MAC address of each forwarding table entry is displayed along with its type, disposition, and associated port number. Select a from the Switch Configuration Menu to view the Forwarding Table Configuration Menu. Figure 3-7 shows the Forwarding Table Configuration Menu and the accompanying table describes the

Forwarding Table Configuration Menu.

FORWARDING TABLE CONFIGURATION Access Control: READ/WRITE

MAC ADDRESS TYPE DISPOSITION PORT ID PORT NAME

-------------------------------------------------------------------------------------------------------------------- 0a0a0a0a0a0b DYNAMIC FORWARD 1

0a0a0a0a0a0b DYNAMIC FORWARD 2 0a0a0a0a0a0c DYNAMIC FORWARD 3 0a0a0a0a0a0d DYNAMIC FORWARD 4 0a0a0a0a0a0e DYNAMIC FORWARD 5 0a0a0a0a0a0f DYNAMIC FORWARD 6 0a0a0a0a0a10 DYNAMIC FORWARD 7 0a0a0a0a0a11 DYNAMIC FORWARD 8

n. Next Page p. Previous Page f. First Page l. Last Page

a. Display Table b. Make Entry Static c. Add Static Entry d. Delete Static Entry e. Modify Static Entry s. Search by Port # m. Search by MAC Address x. Previous Menu

Enter Selection:

Figure 3-7. Forwarding Table Conf iguration Menu

Field De scr ip ti o n

MAC Address MAC address for th e listed port. Type Displays the type of address en try: syst em, d yna mic or sta t-

ic.

Disposition Displays disposition of the address entry: local, forward or

discard.

Port ID Displays the port number associa ted with the MAC address

entry.

Port Name Displays the administrative name assi

Selection Description

Next Page Displays the next page of the forwarding table.

ned to the port.

Previous Pa First Pa Last Pa

e Displays the previous page of the forwarding table. e Displays the first page (top) of the forwarding table. e Displays the last page of the forwarding table.

continued on next page

9032785 ELS100-24TXM User Interface 33

Page 48

Selection Description

Display Table Redisplays the forwardin

table. Make Entry Static Makes a dynamic entry in the forwarding table static. Add Static Entry Adds a static entry to the forwarding table. Delete Static Entry Deletes a static entry from the forwarding table. Modify Static Entry Modifies a static entry from the forwarding table. Search by Port # Performs a search by port numb er and posts the search re-

sults at the top of the screen.

Search by MAC Address

Performs a search by MAC Address a nd po sts the search results at the top of the screen.

34 ELS100-24TXM User Interface ELS100-24TXM

Page 49

Spanning Tree Configuration Menu

The Spanning Tree Config ur ation Menu allows you to view and modi fy Spanning Tree parameters. Select b from the Switch Configuration Menu to view the Spanning Tree Configur ation Menu. A letter identifies selections that can be modified. All other fields are read-only. Figure 3-8 shows the Spanning Tree Configuration Menu and the accompanying

table describes the Spanning Tree Configuration Menu.

SPANNING TREE CONFIGURATION Access Control: READ/WRITE

Bridge ID 32768-000000000000 Designated Root Root Path Cost 0 Root Port NO PORT Topology Change Count 0

a. Spanning Tree Protocol Enable No b. Port Configuration Menu c. Hello Time (seconds) 2 d. Forward Delay (seconds) 15 e. Max Age (seconds) 20 f. Bridge Priority 32768

x. Previous Menu

Enter Selection:

Figure 3-8. Spanning Tree Configuration Menu

Field Description

e ID A unique identifier for the bridge (switch) in the Span-

Brid

Tree. The ID is a combinatio n of the bridge priority

nin and port 1 MAC address.

Desi

nated Root The bridge in the Spanning Tree with the lowest Bridge

ID value, desi Root Path Cost The cost of the path to the root brid Root Port The port identifier of t he por t t ha t off er s th e low e st cost

path to the root brid Topolo

y Change Count The cou nt o f th e n um be r of times the network topo logy

has chan

nated as the root bridge.

ed from a Spanning Tree reconfiguration.

continued on next page

9032785 ELS100-24TXM User Interface 35

Page 50

Selection Description

Spannin Enable

Port Confi

Tree Protocol

uration Menu Provides access to the Spanning Tree Port Configura-

Allows you to enable (Yes) or disable (No) the global Spannin

Tree operation on the switch.

tion Menu.

Hello Time (seconds) The time interval betwee n the se nd i n

BPDUs by the brid

e, if it is root (1-10 second range).

of Configuration

Forward Delay (seconds) The time interval delay before a port transfers into the

forwardin

Max A

e (seconds) The maximum age of received protocol information be-

fore it is discarded (6-40 second ran

Brid

e Priority A relative priority of bridges, with the lowest value bridge

ID indicatin

state, if it is root (4-30 second range).

e).

the highest priority (0-65535 range).

36 ELS100-24TXM User Interface ELS100-24TXM

Page 51

Spanning Tree Port Configuration Menu

The Spanning Tree Port Configuration Menu allows you to view Spanning Tree Configuration information for all of the ports in a table format. Select

from the Spanning Tree Configuration Menu to view the Spanning Tree Port Configuration Menu. Figure 3-9 shows the Spanning Tree Port Configuration Menu and the accompanying table describes the Spanning

Tree Port Configuration Menu.

SPANNING TREE PORT CONFIGURATION Access Control: READ/WRITE

PORT ID PORT NAME PATH COST PORT PRIORITY PORT STATE

-------------------------------------------------------------------------------------------------------- 1 10 128 FORWARDING 2 10 128 FORWARDING 3 10 128 FORWARDING 4 10 128 FORWARDING 5 10 128 FORWARDING 6 10 128 FORWARDING 7 10 128 FORWARDING 8 10 128 FORWARDING 9 10 128 FORWARDING 10 10 128 FORWARDING

n. Next Page p. Previous Page f. First Page l. Last Page

a. Select Port r. Refresh x. Previous Menu

Enter Selection:

Figure 3-9. Spanning Tree Port Configuration Menu

Field Description

Port ID A unique identifier for a port on the brid Port Name The administ rative name assi

ned to the port.

Path Cost The contribution of the path throu

to the total pat h cost from this b rid

ports, 100 for 10Mbps ports. Port Priority The relative priority of the port on the brid Port State The current Spannin

abled, listenin

Tree state of the port on the bridge, either dis-

, learning, forwarding, or blocking.

Selection Description

Next Page Displays the next page of the tabl e. Previous Pa

e Displays the previous page of the table.

e (switch).

h this port, when it is the root port,

e to the root bridge. 10 for 100Mbp s

First Pa Last Pa

e Displays the first page (top) of the table.

e Displays the last page of the table.

Select Port Allows you to enter a port number to view a nd modify port par ameters

in the Spannin

9032785 ELS100-24TXM User Interface 37

Tree Port #n Configuration Menu.

Page 52

Spanning Tree Port #n Configuration Menu

The Spanning Tree Port #n Confi guration Menu allows you to view Spanning Tree Port Configuration information for an individual port. Select a from the Spanning Tree Por t C onfiguration Menu to view the Spanning Tree Port # Spanning Tree Port # describes the Spanning Tree Port #

designation represents the speci f ic port number for configurat ion.

SPANNING TREE PORT #1 CONFIGURATION Access Control: READ/WRITE

Port State DISABLED MAC Address 000000000000 Designated Cost 0 Designated Port 0 Designated Root Designated Bridge

a. Path Cost 10 b. Port Priority 32768

x. Previous Menu

Configuration Menu. Figure 3-10 shows the

Configuration Menu and the accompanying table

Configuration Menu. The “Port #n”

Enter Selection:

Figure 3-10. Spanning Tree Port Configuration Menu

Field Description

Port State The current Spannin

listenin MAC Address The MAC address of the port. Designated Cost The cost of the path to the Root offered by the designated

port for the LAN associated with the port. Desi

nated Port The Port ID of the p ort be lieved to be th e designated port for

the LAN associated with the port. Desi

nated Root The Bridge ID of the bridge recorded as the Ro ot for the LAN

associated with the port.

nated BridgeThe Bridge ID of the bridge believed to be the designated

Desi

brid

Selection Description

Path Cost The contribution of the path through this port, when it is the

root port, to the total path cost from this brid

brid

, learning, forwarding, or blocking.

e for the LAN associated with the port.

e (1-65535 range).

Tree state of the po rt , ei th er d isabl ed ,

e to the root

Port Priority The relative priority of the port on the brid

38 ELS100-24TXM User Interface ELS100-24TXM

e (0-255 range).

Page 53

VLAN Configuration Menu

The VLAN Configuration Menu allows you to configure the operation of Virtual LANs (VLANs) in the switch. Select c from the Switch Configuration Menu to vi ew the VLAN Configuration Men u . Fi gure 3-11 shows the VLAN Configuration Menu and the accompanying table describes the VLAN Configuration Menu. See Appendix D, “Virtual LANs

(VLANs)” for more information about this feature.

VLAN CONFIGURATION Access Control: READ/WRITE

a. VLAN Enable No b. VLAN Menu c. VLAN Port Menu

x. Previous Menu

Enter Selection:

Figure 3-11. VLAN Configuration Menu

Selection Description

VLAN Enable Allows you to enable (Yes) or disable (No) the

operation of the switch. VLAN Menu Allows you to open the VLAN Menu. VLAN Port Menu Menu for confi

uring VLAN information per port.

lobal VLAN

9032785 ELS100-24TXM User Interface 39

Page 54

VLAN Menu

The VLAN Menu displays the configurat ion of VLANs in the switch and allows access to the VLAN #n Configuration Menu to create and configure VLANs. Select b from the VLAN Configurat ion Menu to view the VLAN Menu. Figure 3-12 shows the VLAN Menu and the accompanying table

describes the VLAN Menu.

VLAN MENU Access Control: READ/WRITE

ID VLAN NAME PORTS IN VLAN VLAN EGRESS PORTS

------------------------------------------------------------------------------------------------------ 1 default 1-24 None

c. Configure d. Delete x. Previous Menu

Enter Selection:

Figure 3-12. VLAN Menu

Field Description

ID The identification number of the VLAN (1-4 character ran VLAN Name The administrative name assi

ter ran Ports in VLAN The ports assi VLAN E

Selection Description

Confi

Delete Allows you to delete a specific VLAN.

ress Ports The egress (exit) ports which li nk the ELS100-24TX M to other

devices which also include members of the same VLAN.

ure Allows you to configure an existing VLAN listed in the VLAN

table, create a new VLAN (1-4094 numerical ran

open the VLAN #n Confi

e; entering a VLAN name is not required).

ned to the VLAN.

ned to the VLAN (1-1 4 char ac-

e), and to

uration Menu.

e).

40 ELS100-24TXM User Interface ELS100-24TXM

Page 55

VLAN #n Configuration Menu

The VLAN #n Configuration Menu allows you to configure a name for a specific VLAN, add or remove a port in the VLAN, and add or remove an egress port in the VLAN. Select c from the VLAN Menu to view the VLAN #n Configuration Menu. Figure 3-13 shows the VLAN #n Configur ation Menu and the accompanying table describes the VLAN #n Configuration

Menu.

The designation “#n” represents the number of the specific VLAN to be configured. When configuring ports using the Ports in VLAN parameter, they will be moved to that selected VLAN, and automatically removed from their previous VLAN.

VLAN #n CONFIGURATION Access Control: READ/WRITE

Ports in VLAN 1-24 VLAN Egress Ports None

a. VLAN Name default b. Add Port in VLAN c. Remove Port In VLAN d. Add VLAN Egress Port e. Remove VLAN Egress Port

x. Previous Menu

Enter Selection:

Figure 3-13. VLAN #n Configu rati on Menu

Field Description

Ports in VLAN Lists the ports in the specific VLAN. VLAN E

Selection Description

VLAN Name Allows you to enter an administrative name for the

Add Port in VLAN Allows you to enter a port in the VLAN. Remove Port in VLAN Allows you to remove a port in the VLAN. Add VLAN E

ress Ports Lists the VLAN Egress Ports for the specific VLAN.

VLAN (1-14 character ran

e; entering a VLAN name is

not required).

ress Port Allows you to add a VLAN Egress Port.

Remove VLAN E

9032785 ELS100-24TXM User Interface 41

ress Port Allows you to remove a VLAN Egress Port.

Page 56

VLAN Port Menu

The VLAN Port Menu displays a table of VLAN configuration information on a per port basis and allows you to modify the VLAN Port Type. Select

from the VLAN Configuration Menu to view the VLAN Port Menu. Figure

3-14 shows the VLAN Port Menu and the accompanying table describes the VLAN Port Menu.

VLAN PORT MENU Access Control: READ/WRITE

PORT ID PORT NAME TYPE

-------------------------------------------------------------------------------------------------------- 1 ACCESS 2 ACCESS 3 ACCESS 4 ACCESS 5 ACCESS 6 ACCESS 7 ACCESS 8 ACCESS 9 ACCESS 10 ACCESS

n. Next Page p. Previous Page f. First Page l. Last Page

a. Modify Port Type x. Previous Menu

Enter Selection:

Figure 3-14. VLAN Port Configura ti on M enu

Field Description

Port ID The number assi Port Name The administrative name assi Type The VLAN type for each port (either Hybrid or Access). Hybrid

ports accept ta only allow non-ta

Selection Description

Next Page Displays the next page of the table. Previous Pa First Pa Last Pa

e Displays the previous page of the table. e Displays the first page of the table. e Displays the last page of the table.

ned to the port.

ned to the port

ed and non-tagged frames while Access ports

ed frames.

Modify Port Type Allows you to modify the port type (either Hybrid or Access).

42 ELS100-24TXM User Interface ELS100-24TXM

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Class of Service Configuration Menu

The Class of Service Configuration Menu allows you to configure Class of Service settings for the system as well as to set the Class of Service for VLAN tagged frames. Select d from the Switch Configur at ion Menu to view the Class of Service Confi guration Menu. Figure 3-15 shows the Class of Service Configuration Menu and the accompanying table

describes the Class of Servic e Configuration Menu.

CLASS OF SERVICE CONFIGURATION Access Control: READ/WRITE

a. Class of Service Enable No b. Priority Threshold 4 c. Configure Port Priority

x. Previous Menu

Enter Selection:

Figure 3-15. Class of Service Configuration Menu

Selection Description

Class of Service Enable

Priority Threshold Allows you to enter the

Confi

ure Port Priority Allows you to open the Port Priority Menu for configuring

Allows you to enable (Yes) or disable (No) Class of Service operation for the system.

lobal priority threshold level. The

confi

urable range is 0-7 (0=low , 7=high).

VLAN ta level will be assi

VLAN ta than this threshold level will be assi the switch.

Class of Service information per port.

ed frames with a priority level below this threshold

ned normal priority level through the switch.

ed frames with a priori ty level eq ua l to or greater

ned high priority through

9032785 ELS100-24TXM User Interface 43

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Port Priority Menu

The Port Priority Menu all ows you to modify and display a table whic h shows Class of Service configuratio n information on a per port basis. Select c from the Class of Service Co nfiguration Menu to view th e Por t Priority Configuration Menu. Figure 3-16 shows the Port Priority Configuration Menu and the acco mpanying table describes the Port

Priority Configuration Menu.

PORT PRIORITY Access Control: READ/WRITE

PORT ID PORT NAME PRIORITY DEFAULT

---------------------------------------------------------------------------------------------------------- 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0

n. Next Page p. Previous Page f. First Page l. Last Page

c. Configure x. Previous Menu

Enter Selection:

Figure 3-16. Port Priority Configuration Menu

Field Description

Port ID The port number assi Port Name The administrative name assigned to the port (1-14 character

ran

e).

Priority Default The priority level assigned to non-tagged frames entering the

associated port. The conf i This value, compared to the Priority Threshold Value, determines the priority level assi

Selection Description

Next Page Displays the next page of the table. Previous Page Displays the previous page of the table.

ned to the port.

urable range is 0-7 (0=low, 7=high).

ned to all non-tagged frames.

First Page Displays the first page of the table. Last Pa

e Displays the last page of the table.

Configure Allows you to configure the priority defaul t for a specific port (0-

7 number ran

44 ELS100-24TXM User Interface ELS100-24TXM

e).

Page 59

Port Menu

The Port Menu allows you to displ ay information for each port in a table format, as well as to access the Port Confi gur ation Menu. You can also refresh the screen information. Select c from the Main Menu to view t he Port Menu. Figure 3-17 shows the Port Menu and the accompanying table

describes the Port Menu.

PORT MENU Access Control: READ/WRITE

ID PORT NAME ENABLED STATUS NEGOTIATED DUPLEX SPEED TYPE CONTROL

--------------------------------------------------------------------------------------------------------------------------------------1 Yes CONNECTED No Yes 100 100FX-MM No

2 Yes CONNECTED No Yes 100 100FX-MM No 3 Yes CONNECTED No Yes 100 100TX No 4 Yes CONNECTED No Yes 100 100TX No 5 Yes CONNECTED No Yes 100 100TX No 6 Yes CONNECTED No Yes 100 100TX No 7 Yes CONNECTED No Yes 100 100TX No 8 Yes CONNECTED No Yes 100 100TX No 9 Yes CONNECTED No Yes 100 100TX No 10 Yes CONNECTED No Yes 100 100TX No 11 Yes CONNECTED No Yes 100 100TX No 12 Yes CONNECTED No Yes 100 100TX No

n. Next Page p. Previous Page f. First Page l. Last Page

r. Refresh c. Configure x. Previous Menu

Enter Selection:

LINK AUTO FULL FLOW

Figure 3-17. Port Menu

Field Description

ID The number assi Port Name The administrative name assi Enabled The current “enabled” state of the port, either “Yes” or “No.” Link Status The current link state of the port, either “Connected” or “Disconnected.” Auto

otiated

The current state of auto-ne

completed auto-ne Full Duplex The current full duplex state of the port, either “Yes” or “No.” Speed The current speed of the port, either 10Mbps or 100Mbps. Port Type Current connection type: 10T=10Base-T, 100T=100Base-TX;

100FX-MM=100Base-FX multi-mode fiber, 100FX-SM=100Base-FX

single-mode fiber. Flow Control The current enable/disable flow control port state, either “Yes” or “No.”

Selection Description

Next Pa Previous Pa First Pa Last Pa

e Displays the next page of the table.

e Displays the previous page of the table. e Displays the first page (top) of the table. e Displays the last page of the table.

Refresh Refreshes the screen to reflect latest system conditions. Configure Opens up the Port Configuration Menu. From this menu you can

ure an individual port or multiple ports (See Section 4).

confi

ned to the port.

ned to the port (1-14 character range).

otiation for the port, whether or not it has

otiation, either “Yes” or “No”.

9032785 ELS100-24TXM User Interface 45

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Port Configuration Menu

The Port Configuration Menu allows you to configure port settings for a specific port. Select c from the Port Menu to view the Po rt Configuration Menu. Figure 3-18 shows the Port Configuration Menu and the

accompanying table describes the Port Configuration Menu .

PORTS 1-5 CONFIGURATION Access Control: READ/WRITE

a Port Name b. Port Enable Yes c. Flow Control Enable No d. Auto-negotiation Enable No e. Full Duplex Yes f. Port Speed 100

x. Previous Menu

Enter Selection:

Figure 3-18. Port Configuration Menu

Selection Description

Port Name Allows you to assi

character ran

n an administrative name to the port (1-14

e). Port Enable Allows you to enable (Yes) or disable (No) the port(s). Flow Control Enable Allows you to enable (Yes) or disable (No) flow control on the

port(s).

Auto-ne Enable*

otiation

Allows you to enab le (Ye s) or di sable (No) the auto-n egotiation mode for the port(s).

If Auto-ne Port Speed fields display and are eli

If Auto-ne

otiation Enable is set to “No,” the Full Dup lex and

ible for configuration.

otiation Enable is set to “Yes,” the Full Duplex and

Port Speed fields disappear and the system automatically man-

es these functions.

Full Duplex* Allows you to enable (Yes) or disable (No) the full dupl ex mode

for the port(s).

Port Speed* Allows you to set the speed (10 or 100Mbps) for th e port(s).

* These parameters are not configurable for 100Base-FX ports, which only operate in full duplex mode and at 100Mbps speed.

46 ELS100-24TXM User Interface ELS100-24TXM

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Switch Statistics Screen

The Switch Statistics Screen provi des a sum m ary display of port-level statistics, and provides access to the Port Statistics screens. You can also clear or refresh the statistics. Select d from the Main Menu to view the Switch Statistics Screen. Figure 3-19 shows the Switch Statistics Screen

and the accompanying table describes the Switch Statistics Screen .

SWITCH STATISTICS Access Control: READ/WRITE

ID TRANSMITTED RECEIVED FORWARDED FILTERED DROPPED ERRORED

--------------------------------------------------------------------------------------------------------------------------1 0 0 0 0 0 0

2 0 0 0 0 0 0 3 0 0 0 0 0 0 4 0 0 0 0 0 0 5 0 0 0 0 0 0 6 0 0 0 0 0 0 7 0 0 0 0 0 0 8 0 0 0 0 0 0 9 0 0 0 0 0 0 10 0 0 0 0 0 0

n. Next Page p. Previous Page f. First Page l. Last Page

s. Switch Summary d. Port Statistics r. Refresh c. Clear x. Previous Menu

Enter Selection:

Figure 3-19. Switch Statistics Screen

Field Description

ID The number assi Transmitted Number of frames transmitted out the port. Received Number of frames received on the port. Forwarded Number of frames forwarded through the port. Filtered Number of frames filtered on the port. Dropped Number of frames received on the port that were dropped by the

switch due to lack of resources.

Errored Number of errored fr ames received on the port.

Selection Description

Next Pa

e Displays the next page of the table. Previous Page Displays the previous page of the table. First Page Displays the first page of the table. Last Page Displays the last page of the table. Switch Summary Allows you to open the Switch Summary Screen. Port Statistics Allows you to open the Port Statistics Screen. Refresh Refreshes switch statistics. Clear Clears (or sets to zero) switch statistics.

ned to the port.

9032785 ELS100-24TXM User Interface 47

Page 62

Switch Summary Screen

The Switch Summary Screen allows you to display sum total statistics for all ports of the switch. You can also clear or refresh the statistics. Select

from the Switch Statistics Screen to view the Switch Summary screen.

Figure 3-20 shows the Switch Summary Screen and the accompanying table describes the Switch Summary Screen.

SWITCH SUMMARY Access Control: READ/WRITE

Frames Transmitted 0 Frames Received 0 Frames Forwarded 0 Frames Filtered 0 Frames Dropped 0 Frames Errored 0

r. Refresh c. Clear x. Previous Menu

Enter Selection:

Figure 3-20. Switch Summary Screen

Field Description

Frames Transmitted Total number of frames transmitted out all ports. Frames Received Total number of frames received on all ports. Frames Forwarded Total number of frames forwarded throu Frames Filtered Total number of frames filtered on all ports. Frames Dropped Total number of frames dropped by the switch due to lack of

resources.

Frames Errored Total number of errored frames received from all ports.

Selection Description

Refresh Refreshes switch summary statistics. Clear Clears (or sets to zero) switch summary statistics.

h the switch.

48 ELS100-24TXM User Interface ELS100-24TXM

Page 63

Port Statistics Screen

The Port Statistics Screen allows you to display statistics for each port on the switch. Many of these statistics corr espond to the Statistics group of RMON. You can also refresh or clear the statistics. Select s from the Switch Statistics Screen to view the Port Statistics screen. Figure 3-21 shows the Port Statistics Screen and the accompanying table describes

the Port Statistics Screen.

PORT 1 STATISTICS Access Control: READ/WRITE

Frames Transmitted 0 Collisions 0 Frames Received 0 Late Collisions 0 Frames Forwarded 0 CRC/Alignment Errors 0 Frames Filtered 0 Undersized Frames 0 Frames Dropped 0 Oversized Frames 0 Broadcasts Transmitted 0 Fragments 0 Broadcasts Received 0 Jabbers 0 Multicasts Transmitted 0 64 Byte Frames 0 Multicasts Received 0 65 to 127 Byte Frames 0 Bytes Transmitted 0 128 to 255 Byte Frames 0 Bytes Received 0 256 to 511 Byte Frames 0 Pause Frames Transmitted 0 512 to 1023 Byte Frames 0 Pause Frames Received 0 1024 to 1518 Byte Frames 0

r. Refresh c. Clear x. Previous Menu

Enter Selection:

Figure 3-21. Port Statisti cs Screen

Field Description

Frames Transmitted Total number of frames transmitted on the port. Frames Received Total number of frames received on the port. Frames Forwarded Total number of frames received on the port which were

forwarded to other ports.

Frames Filtered Total number of frames received on the port which were

filtered.

Frames Dropped Total number of frames received on the port which were

dropped by the switch due to lack of resources. Broadcasts Transmitted Total number of broadcast frames transmitted on the port. Broadcasts Received Total number of broadcast frames received on the port.

continued on next page

9032785 ELS100-24TXM User Interface 49

Page 64

Field Description

Multicasts Transmitted Total number of multicast frames transmitted on the port. Multicasts Received Total number of multicast frames received on the port. Bytes Transmitted Total number of bytes transmitted on the port. Bytes Received Total number of bytes received on the port. Pause Frames Transmitted Total number of flow contr ol p au se fr a me s tr an smi tt ed on

the port.

Pause Frames Received Total number of flow control pau se frames receive d on the

port. Collisions Total number of collisions detected on the port. Late Collisions Total number of late collisions detected on the port. CRC/Ali

nment Errors Total number of frames received on the por t which ha d ei-

ther a CRC or an ali

nment error.

Undersized Frames Total number of frames received on the port which were

undersized. Oversized Frames Total number of frames received on the port which were

oversized.

ments Total number of frames received on the port which were

Fra

ments.

fra Jabbers Total number of frames received on the port which were

jabbers. 64 Byte Frames Total number of frames received and transmitted on the

port which were 64 bytes in len

th.

65 to 127 Byte Frames Total number of frames received and transmitted on the

port which were from 65 to 127 bytes in len

th.

128 to 255 Byte Frames Total number of frames received and transmitted on the

port which were from 128 to 255 bytes in len

th.

256 to 511 Byte Frames Total number of frames received and transmitted on the

port which were from 256 to 511 bytes in len

th.

512 to 1023 Byte Frames Total number of frames received and transmitted on the

port which were from 512 to 1023 bytes in len

th.

1024 to 1518 Byte Frames Total number of frames received and transmitted on the

port which were from 1024 to 1518 bytes in len

th.

Selection Description

Refresh Refreshes port statistics. Clear Clears (or sets to zero) port statistics.

50 ELS100-24TXM User Interface ELS100-24TXM

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General Information Screen

The General Information Screen all ows you to view general system information. Select e from the Main Menu to view the General Information Screen. Figure 3-22 shows the General Information S creen and the

accompanying table describes the General Inform ation Screen.

GENERAL INFORMATION Access Control: READ/WRITE

Software Version 1.00 Serial Number 100 Base MAC Address 00c0ba000000 Up Time(minutes) 12 Power Up Count 1

x. Previous Menu

Enter Selection:

Figure 3-22. General Information Screen

Field Description

Software Version The version of system software currently operatin

on the switch. Serial Number T he serial number of the switch. Base MAC Address The base MAC address of the switch (port 1 ad-

dress). Up Time (minutes) The number of minutes the switch has been oper-

ational since the last power cycle or reset. Power Up Count The number of times the system has powered up

or been reset since the switch was ori

inally

shipped from the factory .

9032785 ELS100-24TXM User Interface 51

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Download Software Menu

The Download Software Menu allows you to set up and initiate a software download. Select f from the Main Menu to view the Download Software Menu. Figure 3-23 shows the Dow nload Software Menu and the

accompanying table describes the Download Software Menu.

DOWNLOAD SOFTWARE Access Control: READ/WRITE

a. TFTP Server IP Address 1.2.3.4 b. TFTP File Name c. Start TFTP Download d. Start XMODEM Download

x. Previous Menu

Enter Selection:

Figure 3-23. Download Software Menu

Selection Description

TFTP Server IP Address The IP address of the TFTP server. TFTP File Name The file name to be downloaded from the TFTP server

(maximum of 80 characters).

Start TFTP Download Starts a TFTP download usin

and TFTP File Name information.

Start XMODEM Download Starts an XMODEM (serial) download.

TFTP Server IP Address

52 ELS100-24TXM User Interface ELS100-24TXM

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Save Current Configuration

The Save Current Configuration screen ensures that all changes made to the ELS100-24TXM switch via the console menus will be stor ed in t he event of power outages or power cycles.

To save your current configuration, do the following:

Select g from the Main Menu to view the Save Current Configuration screen.

The following message prompt displays:

The current settings will become permanent. All the saved settings will be lost!

a. OK x. Cancel and return to the Previous Menu

Select either a to confirm the process or x to cancel the process.

Return to Default Configuration

The Return to Default Configuration screen allows you to restore the original factory default switch settings before changes were made via the user interface or SNMP.

Logout

To return to default configuration settings, do the following:

Select h from the Main Menu to view the Return to Default Configuration screen.

The following message prompt displays:

Switch will return to default settings. All the current changes and settings will be lost!

a. OK x. Cancel and return to the Previous Menu

Select either a to confirm the process or x to cancel the process.

The Logout menu item allows you to log out of the user interface and return to the Login screen. Select i from the Main Menu to logout. After this command is entered, the system logout occurs aut omatically.

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Reset

The Reset screen allows you to perform a switch hardware reset. You are first prompted as to whether or not to save the current switch configuration.

To reset the switch, do the following:

Select j from the Main Menu to view the Reset screen. The following message prompt displays:

Switch will go through a hardware reset. All the current changes that have not been saved will be lost!

a. Save changes and Reset b. Don’t save changes and Reset

x. Cancel and return to the Previous Menu

Select either a or b to confirm the process or x to cancel the process.

54 ELS100-24TXM User Interface ELS100-24TXM

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4. CONFIGURING & MONITORING THE SWITCH

Common Tasks

The switch console menus allow you to modify default switch settings and configure the switch for network management. They also allow you to monitor switch performance and status. See Section 3, “ELS100-24TXM User Interface,” for an overview of the menu hierarchy and a description of all menus. The following sections describe common tasks in setting up and operating the ELS100-24 TXM switch using the console menus.

To begin, set operating parameter s and m ake sur e the network connections are correct by performing these tasks:

•

Setting password protection for the swi tch to prevent unauthorized access to console menus

•

Assigning an IP address for the s wi tch if you plan to manage the switch using SNMP, or if you use Telnet to access the switch

•

Checking network configuration status and verifying that network connections are correct

After the switch is installed and oper at ing, you may want to perform any of the following tasks:

•

Connecting via Telnet for in-band access to t he console menus

•

Setting SNMP parameters for managem ent access

•

Viewing switch statistics to monitor and evaluate switch performance and traffic patterns on the netw o rk

•

Configuring port mirroring

•

Downloading a software upgr ade

•

Configuring Spanning Tree parameters

•

Configuring VLANs

•

Configuring Class of Se rv ic e

•

Configuring port operation (enable/disable, port speed, full/half duplex and flow control)

•

Configuring the forwarding table

•

Configuring the broadcast cutoff rat e

•

Setting a default gateway

•

Configuring BootP/DHCP

9032785 Configuring & Monitoring the Switch 55

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Setting Password Protection

The ELS100-24TXM switch is factory-configured with access rights to the console menus set to READ/WRITE. This setting allows anyone to use the console menus to modify any operational parameter. To protect the configuration of the switch from unaut horized modification, you should enable password protection to the console menus.

To enter a password, do the following:

Select Password from the System Configuration Me nu and pr ess [Enter].

Enter a password containing six to eig ht alphanumeric characters.

The password is not case sensitive. For verification, you are asked to enter your password again. If both entries agree, the new password is stored.

By factory default, there is no password configured. This means that at the login: prompt, all you have to do is press [Enter] to gai n REA D/ WRITE access to the console menus. When you configure the password parameter, the factory default setting is deactivate d and the new password governs access to the console menus.

After you enter a password and logo ut using the Logout command from the Main Menu, all access rig hts change to READ-ONLY. The curr ent level of access control is indicated at the top of the management screen.

If you forget your password, contact your Cabletron Systems Support Representative.

You are automatically logged out from the console menus based on the Screen Timeout setting in the System Configuration Menu. A setting of “0” permits the console menus to remain available indefinitely.

56 Configuring & Monitoring the Switch ELS100-24TXM

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Assigning an IP Address

To assign an IP address to the swit ch, do the following:

Select System Configuration Menu from the Main menu.

Select IP address from the menu and en ter the IP address. Press [Enter].

The IP address is now programmed. The subnet mask is automatically set to correspond to the class of the address entered. If a different mask is used on the network, select Subnet Mask from the menu and enter the appropriate mask.

Checking Network Configuration Status

To check connection status for the net work, do the following:

Select Port Menu from the Mai n Menu. If a network cable is properly connected to a port, the Link Status for

the port reads CONNECTED. If no cable is connected to the port, or if the cable or port is faulty, the Li nk St atus for the port reads DISCONNECTED.

If you see a DISCONNECTED status for a connected port, plug t he cable into another port on the switch or try anot her cabl e.

Connecting via Telnet

You can connect to the ELS100- 24TXM switch from a remote location using the Telnet application. Thi s application allows you to establish inband access to the console menus.

To connect to the ELS100-24TXM swi tch via Telnet, do the following:

. Assign an IP address using the System Configuration Menu.

Set a password using the System Configuration Menu.

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Setting SNMP Management Access

Access to the ELS100-24TXM switch through SNMP is controll ed by community names. The community names set for the switch must match those used by the SNMP management station for successful communication to occur. The switch uses two community names. The “Public” community name allows r ead- only access to the device via SNMP. The “Private” com m uni ty nam e allows read/write access.

The ELS100-24TXM swit ch can send SNMP messages called traps to SNMP management stati ons when an important event occurs with the switch. The switch allows up to four destinations to be config ur ed for these trap messages to be sent.

To configure SNMP access for the switch, do the f oll owing:

Select System Configur at ion M enu f rom the Main Menu.

Select SNMP Configur ation Menu.

Select SNMP Private Community Name from the menu and enter the desired read/write access community name (you are permitted to enter from one to 10 characters).

Select SNMP Public Community Name and enter the desir ed r eadonly community name (you are perm itted to enter from one to 10 characters).

Select one or more Trap Destination entries from the menu and enter the appropriate IP addresses.

For each trap destination entered, a corresponding community name should be entered.

Viewing Switch Statistics

To view switch statistics, do the following:

. Select Switch Statistics Screen from the Main Menu .

The screen lists the main statistical counts for all ports on the switch simultaneously.

Select Switch Summar y fr om the Switch Statistics Screen. The screen lists a summary of sum total statistics for all ports on the

switch.

Select Port St atistics fro m the Switch Statistics Screen.

Enter the port number. Press [Enter]. The screen lists expanded port-level statistics for an individual port.

On any of the statistics screens, select Cl ear to clear (zero) the displayed statistical counts and Refresh to refresh (update) the displayed statistical counts.

58 Configuring & Monitoring the Switch ELS100-24TXM

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Configuring Port Mirroring

You can mirror the traffic being switched on any port for the purposes of network traffic analysis and connection assurance. When Port Mirroring is enabled, one port in each group of eight becomes a monitor port for any one of the other ports within the group. The two ports must be operating at the same speed.

To configure port mirroring, do the following:

Select Switch Configuration Menu from the Main Menu.

Turn the switch port mirroring operation on or off by toggling the Port Mirroring Enable opti on (pressing g).

Select Mirrored Port fo r the port to be mirrored (traffic information source) and enter the number of the port. Press [ Ent er ].

Select Transmit Data Mirror Enable to mirror the data being transmitted out the mirrored port to the mirroring port . Alt er natively, select Receive Data Mirror Enable to mirror the data being received on the mirrored port to the mi rr or ing port. Only one of these parameters can be enabled at a given time.

Connect a traffic analyzer or RM ON probe to the mirroring port.

Downloading a Software Upgrade

You can upgrade the operational software in the ELS100-24TXM switch without physically opening the switch or being in the same location. The software storage sector in the flas h memory of the switch is reprogrammable, allow ing you to easily download software feature enhancements and problem fixes to the switch from a local or remote location.

Software can be downloaded to the switch in two ways:

•

Via the serial port. This procedure is an out- of -band operation that copies the software through the ser ial p or t to the swi tch. This operation takes approximately 10 minutes and requires minimal configuration.

•

Via TFTP download. This procedure uses a TFTP server connected to the network and downloads the software using the TFTP protocol. A TFTP download is much faster than a serial download, requir ing only a few seconds, and can be used to upgrade an ELS100-24TXM switch that is not physically proximate. The disadvantage is that this method requires a TFTP ser ver and additional setup.

9032785 Configuring & Monitoring the Switch 59

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Downloading Via the Serial Port

A serial download is the easiest method to upgrade the ELS1 00-24TXM switch software, requiring the least amount of equipment and configuration.

To download switch software via the seria l port, do the following:

Select Download So ft ware Menu from the Main Menu.

Select Start XMODEM Download. The following message prompt displays:

Software downloader is running. Software downloader request: Please start XMODEM

transfer (9600, N, 1).(Please ignore any characters that may appear on the next line).

Send the file using the XMODEM protocol from your comput er application (the proc edur e var ies depending upon the applicat ion used).

When the XMODEM procedure fi nishes, the following message prompt displays:

Software download successfu lly completed XMODEM download. Please wait while program flash is being written. Software downloader is exiting after successful download to flash. Please wait while system initializes.

The system software will reinitialize and display the logi n pr ompt.

Downloading Via TFTP

To perform a TFTP downloa d, you must first configure the ELS100-24TXM switch. This consists of programming the switch with an IP address, if this has not already been done, and entering the IP address of the TFTP server and the name of the u pgr ade file. To program the switch IP address, go to the System Configuration Menu which is accessible from the Main Menu screen.

To download switch software via TFTP, do the following:

Select TFTP Server IP Addr ess fr om the Download Software M enu.

Enter the TFTP server I P addr ess and press [Enter].

Select TFTP File Name an d en ter the file name to be downloaded from the TFTP server.

For a TFTP download, the path to the file must be included in its name. For example, if the upgrade file name is filename.bin and it resides in the directory / usr/tftp on the TFTP server, then you must enter the TFTP file name as: “/usr/tftp/filename.bin”.

60 Configuring & Monitoring the Switch ELS100-24TXM

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If necessary, configure the addr ess of an IP gateway to reach the

server from the switch using the Default Gateway field on the System Configuration Menu.

Configure the TFTP server by copying the download file from the

upgrade disk to an appropriate director y and st arting the server. Select Start TFTP Download and press [Enter].

To verify that the TFTP download has been successfully completed, note the software version level displayed on the General Information screen accessible from the Main Menu. This number should match the version number that appears on the upgrade disk.

Configuring Spanning Tree Parameters

The ELS100-24TXM switch supports the IEEE 802.1D Spanning Tree Protocol. This protocol allows redundant connections to be created between LAN segments for pur poses of fault tolerance. Two or m or e physical paths between different segm ents can be created through the switch, with the Spanning Tree Protocol choosing a single path at any given time and disabling all others.

If the chosen path fails for any reason, a disabled alternative is activated, thereby maintaining the connect ion. See Appendix B, “Spanning Tree Concepts,” for further information on using the Spanning Tree Protocol in a network.

Configuring Spanning Tree parameters from their default can cause serious deterioration of network performance.

To configure Spanning Tree Parameters, do the following:

Select Switch Configuration Menu from the Main Menu.

Select Spanning Tree Configuration Menu.

Turn the switch Spanning Tree operation on or off by toggling the

Spanning Tree Protocol Enabl e option by pressing a. Select Port Configuration.

The Spanning Tree Port Confi gur ation Menu displays. Change the parameters that display in this menu as required.

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Configuring VLANs

A virtual LAN (VLAN) is a group of devices on one or more LANs that are configured such that they can communicate as if they were attached to the same wire. Because VLANs are based on logical instead of physical connections, they are extremely flexible.

The most fundamental benefit of VLAN technology is the ability to create workgroups based on function rather than on physical location or media. For further information, see Appendix D, “Virtual LANs (VLANs).”

To configure VLANs, do the following:

Select Switch Configur ation Menu from the Main Menu.

Select VLAN Configurat ion Menu.

Turn the global switch VLAN operation on or off by toggling the VLAN Enable option by pressing a.

Select VLAN Menu. The VLAN Menu displays. This menu displays the current configura-

tion of VLANs in the system.

To delete a current VLAN, select Delete, then enter the number of the VLAN.

To configure a VLAN, select Configure and enter a VLAN number. A new VLAN can be created this way.

The VLAN #n Configuration Menu displays. From this menu, you can configure VLAN names, add/delete ports in a VLAN, and add/delete egress ports for a VLAN.

From the main VLAN Configuration Menu, select VLAN Port Menu to configure the VLAN port mode (hybrid or access) for individual ports.

Configuring Class of Service

You can configure Class of Service parameters using the Class of Service Configuration Menu. This menu permits you to configure priority levels to traffic being forwarded through the switch. During periods of congestion, Class of Service settings ensure that traffic which has been assigned high priority is forwarded through the switch ahead of normal priority traffic. For further information, see Appendix E, “Class of Service.”

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To configure Class of Service, do the f ollowing:

Select Class of Service Config uration Menu from the Switch

Configuration Menu. Turn the global switch Class of Service operation on or off by toggling

the Class of Service Enable option by pressing a. Select Priority Threshold and ty pe a num ber between 0 and 7.

Select Configure Port Priority.

The Port Priority Menu displays. From this menu, individual port priority levels can be configured.

Configuring Port Operation

You can configure switch ports for oper ational parameters such as autonegotiation, duplex mode, port speed and flow control. The fib er ports always operate in full duplex mode and 100Mbps speed. Therefore, these two parameters, along with auto-negotiation, are not configurable on fiber ports.

To configure port operation, do the following:

Select Port Menu from the Mai n Menu.

Select Configure and enter an individual port number or multiple port

numbers. Press [Enter].

Examples: You can configure an individual port or multiple ports, separated by commas or hyphens, in either: a list: ports 1, 3, 5, 7 a range: ports 6-9 or a combination of both: 1, 3, 5, 7, 10-15, 21, 23

The port number(s) entered disp lays on the top of the Port Configuration screen.

Select Port Name and en t e r a Port Name. Press [Enter].

Select Port Enable to toggle between enabling (Yes) and disabling

(No) the port(s).

. Select Flow Control Enable to toggle between enabling (Yes) or

disabling (No) flow contr ol on t he port(s). Select Auto-negotiation Enable to toggle between enabling (Yes) or

disabling (No) auto-negot iation on the port.

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If Auto-negotiation Enable is set to No, the Full Duplex and Port Speed modes need to be configured.

If Auto-negotiation Enable is set to Yes, the Full Duplex and Port Speed fields disappear and the system automatically configures these functions.

Select Full Duplex to toggle between Yes (Full Duplex) and No (Half

Duplex) mode on the port(s). Select Port Speed to toggle between 10Mbps and 100Mbps speeds

on the port(s).

Configuring the Forwarding Table

The Forwarding Table allo ws you t o d esignate forwarding treatment through the switch for specific MAC addresses, allowing you to maint ain the efficiency and security of your network. You can search for specific MAC addresses by the address itself or by port number. The switch learns addresses dynamically from incoming packets and builds a table of these addresses along with their associated ports. There are three types of MAC addresses in the forw arding table:

Dynamic MAC addresses, which are dynam ically learned and

•

removed by the switch based on a time period defined using the Forwarding Table Aging Time option in the Switch Confi gur at ion Menu.

Static MAC addresses, which are ent er ed manually, stored in

•

nonvolatile memory and automatically placed in the forwarding table. System MAC addresses, which are set by the system software and

•

cannot be modified. Each switch port has a permanent system MAC address assigned to it.

There are three types of dispositions associated with each address in the forwarding table:

Forward, which directs packets destined for a specific MAC address

•

to a specific port. Discard, which drops packets destined for a specific MAC address

•

(and thus provides a security function by blocking certain packets). Local, which is for packets destined for the switch itself (such as a

•

“local” SNMP management packet).

To configure the forwardi ng table, do the following:

Select Switch Configur ation Menu from the Main Menu.

Select Forwarding Ta ble Configuration Menu.

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To either make an existing dynamic entry static (Make Entry Static) or delete a static entry (Delete Static Entry), do the following:

Select the letter associated with the option.

The following message prompt displays:

Enter MAC Address:

Enter the MAC address. Press [Enter].

To either add a static entry (Add St at ic Entry) or modify a static entry (Modify Static Entry), do the following:

Select the letter associated with the option.

The following message prompt displays:

Enter MAC Address:

Enter the MAC address. Press [Enter].

The following message prompt displays:

Forward to Port (Y/N):

Do one of the following:

If you select “Y” and Press [Enter], the system displays:

Enter Port Number (1-24):

Enter the port number. Press [Enter]. If you select “N” and press [Enter], the system displays “discard” in

the Disposition field.

Configuring Broadcast Cutoff Rate

This setting affects the throttl in g of excessive broadcast or unicast packets with unknown MAC addresses being handled by the switch. Normally, when these types of packe ts ar e received by the switch, they are forwarded (flooded) to every port on the switch or on a VLAN. However, if the receiving rate of these packets exceeds the broadcast cutoff rate, the switch will throttle bac k or li mit the forwarding of these packets based on the configured Broadcast Cutoff Rate. This mechanism helps to prevent broadcast storms, a pr obl em often encountered in Ethernet networks.

To configure the broadcast cutoff rate, do the following :

Select Switch Configuration Menu from the Main Menu.

Select Broadcast Cutoff Rate, enter the rate value, and press [Enter].

Valid values are in the range from 100 t o 500, 000 per second. This rate value is applied to each grouping of 8 ports on the switch. A setting of 500,000 essentially disables t his f eature.

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Setting a Default Gateway

The Default Gateway param eter defines the IP address of a router or other network device to whic h IP packets are to be sent if destined for a subnet outside of that which the switch is operating.

To s et a def ault gateway, do the following:

Select System Configur at ion Menu from the Main Menu.

Select Default Gateway.

Enter the gateway IP add ress. Press [Enter].

Configuring BootP/DHCP

The DHCP and BootP protocols allow you to automatically configure the switch’s IP address information. Enabling this feature greatly speeds up device configuration, especially when a large number of devices are installed.

A DHCP and/or BootP server must be operating on the network and be properly configured for this option to work. When this option is enabled, the switch first tries to obtain an IP address from a DHCP server. If this fails, the switch tries to obtain an IP address from a BootP server. If this fails, the switch uses a previously configur ed IP address, if one exists.

To configure BootP/DHCP, do the following:

Select System Configur at ion M enu f rom the Main Menu.

Select BootP/DHCP En able. This selection toggles betwee n Enable and Disable.

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5. SNMP MANAGEMENT

The SNMP Protocol

SNMP (Simple Network Managem ent Pr otocol) is a communication protocol designed specifically f or t he pur pose of managing devices or other elements on a network. Network equipment commonly m anaged with SNMP includes hubs, switches, routers, and host computers. SNMP is typically used to configure these types of devices for proper operation in their network environment, as well as to monitor them to evaluate their performance and detect potential problems.

Managed entities supporting SNMP typically contain software, which runs locally on the device and is referred to as an agent. In Figure 5-1, software in an ELS100-24TXM switch functions as an agent, monitoring and controlling the functio nality of the switch.

Figure 5-1. ELS100-24TXM Swi tch es Managed by an SNMP Management

Workstation

A defined set of variables, referred to as managed objects, is maintained by the agent and used to manage the device. These objects are defined in a Management Information Base (MIB) which allows for a standard presentation of the infor m a t ion controlled by the agent over the netw ork.

The software used to access the information maintained by the SNMP agents across a network is referred to as the SNMP Manager, and typically runs on a workstation.

The SNMP manager software uses a MIB specification, equivalent to that which the agent maintain s, to r ead and write objects controlled by th e agent for purposes of configur ing and monitoring the device . SN MP defines the format of the MI B speci fi c at ions and the protocol used to access this information.

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There are three main operations defined in SNMP:

Operations that read information from the managed device, such as

•

those used to obtain status or statistical data, are called GET operations.

Operations that change a functional parameter on the device, such

•

as those used to configure Spann ing Tree or to initiate a software download, are referred to as SET oper at ions. GET and SET operations are initiated only by the manager software, and result in a response by the agent.

The third operation type, the TR AP, allows the agent to send an

•

unsolicited message to the manager. This operation is typically used as an alert of a potential probl em or a change of status with the device. The Trap Destination parameter in the SNMP Configuration Menu is used to configure the IP addresses of the SNMP Manager to which ELS100-24TXM trap me ssages ar e sent.

MIB Objects

A number of standard MIB specifications have been defined for managing network equipment. SNMP complian t devices typically support one or more standard MIBs defined by the Internet Engineering Task Force (IETF), in the form of Request for Commen ts (RFC) documents.

These MIBs provide a common method of managing devices, such as switches and hubs, and network interfaces, such as Ethernet and token ring. The primary standard MIB, referred to as MIB-II, provides an overall view of the managed agent and must be supported, at least in part, by all SNMP agents. In addition, proprietary MIB extensions are defined by commercial vendors for managing devi ce- specific functions of their products.

The ELS100-24TXM swit ch suppor ts four standard MIBs:

RFC 1213 - Management Inf or mat ion Base for Network

•

Management of TCP/IP based Internets (MIB-II) RFC 1398 - Definitio ns of M anaged Objects for the Ethernet-like

•

Interface Types (Ethernet MIB) RFC 1493 - Definitio ns of M anaged Objects for Bridges

•

RFC 1757 - Remote Netw ork Monitoring Management Inf ormation

•

Base

The ELS100-24TXM switch also supports Cabletron Systems proprietary MIB extensions.

RFC 1213 (MIB-II)

RFC 1213 provides management of switch system-level parameters, including TCP/IP protocol-re lat ed st atistics, IP addressing, routing tabl e information, and interf ace statistics for each switch port. MI B-II is the standard MIB defined by RFC 1213. All agent devices operating SNMP are required to support at least part of MIB-II.

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This MIB reports infor ma ti on about the protocols and network interfaces supported on the agent itself, as well as other general information. The MIB is divided into a number of groups, each of which corresponds to a specific protocol or set of infor mation. Some groups are defin ed in other RFC documents.

The groups specifically defined in RFC 1213 and supported by the ELS100-24TXM switch system software are as follows:

System – General information about the agen t syst em

•

Interfaces – Information about the network interfaces of the system

•

Address Translation – Interface address information, both MAC level

•

and network (IP) level IP – Statistics and information related to the IP protocol

•

ICMP – Statistics and information relate d to the ICMP protocol

•

TCP – Statistics and information related to the TCP protocol

•

UDP – Statistics and inform ation related to the UDP prot ocol

•

Transmission – Statistics and information related to the physical

•

network medium to which the system interfaces (e.g. Ethernet, token ring, etc.).

SNMP – Statistics and information related to the SNMP protocol

• RFC 1398 (Ethernet MIB)

RFC 1398 provides management and monitoring for the Ethernet-specific aspects of each port on the switch. This is the Ethernet-specific statistics subgroup of the MIB-II Transmission group. This group provides a set of statistics related to Ethernet’s physical level operation. Specifically, error and collision-related statistics are presented.

RFC 1493 (Bridge MIB)

RFC 1493 is a group defined under MI B-II. This MIB deals with the operation of the system as an 802.1D-compliant bridge. Areas of functionality supported by this group include Spanning Tree and forwarding table information and configuration.

RFC 1757 (RMON MIB)

RFC 1757 is a group defined under MI B-II. This MIB provides management for the RMON as pect s of the switch. The ELS100-24TXM switch supports four of the nine groups of RMON defined for Ethernet networks on a per port basis. For further information, see the subsection “RMON” in Chapter 1.

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Cabletron Systems Proprietary MIB Extensions

Areas of ELS100-24TXM switch functionality not covered by the standard RFC MIBs are specified in the Cabletron Systems private MIB. This MIB definition is specified separately from MIB-II. Ar eas cover ed in this MIB include various system, switch, and port level information. System information MIB variables are shown in Table 5-1, switch information variables in Table 5-2, and port variable s in Table 5-3.

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Table 5-1. System Information Variables

ging

Variable Description

SerialNo Serial number of t he unit. TftpIpAddress TFTP server IP address for TFTP downloads. TftpFilenam e Filename of the downl oad up PowerUpCount Cumulative numb er of times sw itch has powere d up or been

reset.

BroadcastCutoffRate Per second rate past which broadcast and destination un-

known unicast frames are not flooded on each ports on the switch.

GatewayIPAddress IP address of the default

destined for another subnet are sent.

TftpStartDownload Start TFTP downloads vi a SNMP, usin

TftpFilename. BootpDhcpEnable Enable/disable BootP/DHCP for IP address confi Reset Remotely execute a software reset of the switch.

rade file on the TFTP server.

roup of 8

ateway (router) to whi ch packets

TftpIpAddress and

uration.

Table 5-2. Switch Informatio n Vari abl es

Variable Description

SwitchIpAddress IP address of the switch, used for mana SwitchSubnetMask Subnet mask correspondin ActiveA

Time Aging tick period in seconds by which addresses in the for-

wardin

table are aged out.

to the SwitchIPAddress.

ement.

SwitchStpStatus Enable/disable operation of Spannin SwitchMana SwitchTrapRcvr1 SNMP trap mana SwitchTrapCommunity1 SNMP community associated with trap mana

SwitchTrapRcvr2 SNMP trap mana SwitchTrapCommunity2 SNMP community associated with trap mana

SwitchTrapRcvr3 SNMP trap mana SwitchTrapCommunity3 SNMP community associated with trap mana

SwitchTrapRcvr4 SNMP trap mana SwitchTrapCommunity4 SNMP community associated with trap mana

SwitchPortMirrorin tus

er List of SNMP trap manager IP addresses.

er IP address #1.

#1.

er IP address #2.

#2.

er IP address #3.

#3.

er IP address #4.

#4.

Sta-

Enable/disable port mirroring operation of the switch.

Tree on the switch.

continued on next page

er IP address

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Table 5-2 Switch Information Variables (continued)

Variable Description

SwitchMirroredPort Port to be mirrored from. SwitchMirrorin SwitchXmitMirrorEnable Enable/disable mirrorin

SwitchRcvMirrorEnable Enable/ disable mirrorin

SwitchVlanEnable Enable/disable SwitchVlanConfi

Port Port to be mirroring to.

of transmitted traffic out of the

mirrored port to the mirrorin

of received traffic into the mir-

rored port to the mirrorin

lobal VLAN operation of switch.

Table Table indexed by SwitchVlanId

port.

SwitchVlanId VLAN number or ID. SwitchVlanName Text string for VLAN name. SwitchVlanPorts Ports in the VLAN. SwitchVlanStatus Variable used to add or delete entries from the VlanConfig-

Table.

SwitchVlanE

ressPorts Ports to which traffic destined for this VLAN may be trans-

mitted.

SwitchVlanStatus Variable used to add or delete entries from the VlanConfi

Table.

SwitchVlanPortTable Table indexed by SwitchVlanP ortId. SwitchVlanPortId Port number or ID. SwitchVlanPvid Port VLAN ID (PVID) for this port. SwitchVlanPortType The type of VLAN this port is operatin

as, either hybrid or

access.

SwitchPriorityEnable Enable/disable

lobal traffic priority in the switch.

SwitchPriorityThreshold Priority threshold level (0-7) in the switch which defines

switch traffic to be hi

h or low priority. SwitchPriorityPortTable Priority table indexed by SwitchPriorityPortId. SwitchPriorityPortId Port number or ID. SwitchPriorityDefault Priority level (0-7) assi

ned to untagged traffic entering the

associated port.

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Table 5-3. Port Variables

Variable Description PortId Port number or ID. PortStatus Link status of the port. PortDuplexStatus Full/half duplex settin

otiation is enabled. PortName Text name assi PortEnable Enable/disable status of the port. PortSpeed Speed the port is operating at. Not configurable if auto-ne-

otiation is enabled. PortAutone PortFlowControlEnable Enable/disable flow control on the port. PortType The type of port, either : 1 0Ba se- T, 10 0Ba s e- TX, 1 00B ase -

Enable Enable/disable auto-negotiation on the port.

FX.

of the port. Not configurable if auto-

ned to the port.

Compiling MIB Extensions: Cabletron Website

The MIBs supported by the ELS100-24TXM switch must be compiled into the SNMP network management platform befo re the switch can be managed. The supported MIB s are available via the Internet at the following address:

ftp://134.141.197.25 /p ub/ snmp/mibs/enterprise

file name:

ctELS100-NG-mib .t x t

The four standard MIB specific ations listed above with which the ELS100-24TXM switch is compliant are generally available with the SNMP management platform.

Application modules specific to managing the ELS100-24TXM switch under different network management platforms are available. Contact Cabletron Systems for information regarding supported platforms. If you require assistance, contact the Cabletron Systems Global Support Center directly at either:

(603) 337-3219 or (603) 332-9400

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Page 89

APPENDIX A. TECHNICAL SPECIFICATIONS

General

Standards Compliance

IEEE 802.1D Transparent Bridging Specifications (ISO/IEC 10038) IEEE 802.1p Traffic Class Expediting and Dynamic Mult icast Filtering IEEE 802.1Q Virtual Bridged Local Area Networks IEEE 802.2 Local Area Netw or ks, Logical Link Control (LLC) IEEE 802.3 CSMA/CD 9 (ISO/IEC 8802-3) IEEE 802.3i 10Base-T (ISO/IEC 8802-3, clause 14) IEEE 802.3u 100Base-TX (ISO/IEC 8802-3, clause 25) IEEE 802.3u 100Base-FX IEEE 802.3x Flow Control EIA RS-232C (DTE-to-DCE) EIA RS-310C (19” rackmount)

Certification

Emissions: FCC Part 15, Subparts A and B, Class A; EN55022 (CI SP R

22), Class A; VCCI, Class A Safety: UL 1950, CUL 1950 B (CSA); IEC 950 (TUV ) CE Mark: 89/336/EE C; 93/68/EEC; 73/23/EEC Immunity: IEC 801-2; I EC 801-3; IEC 801-4

Data Rate

10 Mbps Manchester encoded or 100 Mbps 4B/5B encoded

Environmental Specifications

Operating temperature: 32° to 113° F ( 0° C to 45° C) Operating humidity: 5 to 95% relative, non-condensing Storage temperature: -22° to 158°F (-30° C to 70° C) Storage humidity: 5 to 95% rel ative, non-condensing

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Electrical Specifications

Input voltage: 100-240 VAC Input frequency: 50-60 Hz Maximum power consump ti on: 75 VA

Physical

Height: 1.75 in. (4.4 cm) Length: 16.0 in. (40.6 cm) Width: 17.1 in. (43.4 cm mountabl e

in a standard 19 in. rack)

Weight: 10.5 lb. (4.8 kg)

Microprocessor

Type: Intel i960J series, 32 bit Speed: 33 MHz

Memory

Processor DRAM: 4 MB Packet Buffer Memory: 4 MB/8 ports Flash Memory: 2 MB

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Port Specifications

Console Port

Table A-1 shows the console port pin assignments.

Table A-1. RS-232 Console Port Pin Assignments

Pin Signal Name 1 RTS/CTS 2TXD 3RXD 4DSR 5Ground 6DTR 7 DCD 8 DCD 9 Not used

10Base-T and 100Base-TX Ports

The ELS100-24TXM switch provides IEEE 802.3u auto-negotiation on its 10Base-T/100Base -TX ports for 10/100 speed and ful l/ half duplex operation. Table A-2 shows the 10Base-T/100Base-TX pinouts. These ports are wired MDI-X. All undefined pins are not used.

Table A-2. 10Base-T/100Base-TX Pinouts

Pin MDI-X Signal Name

1 RD+ 2 RD3TD+ 6TD-

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MDI/MDI-X Crossover Cable Wiring

Figure A-1 shows the wiring scheme for implementing a crossover cable if needed for connection to the switch’s 10Base-T or 100Base-TX ports. Such a cable may be required when connecting t he swi tch to another switch or a hub device.

Figure A-1. External Crossover Cable Wiring

Power Cord Set Requirements

The wide-range input feature of the ELS100-24TXM Ethernet switch permits it to operate from any line voltage between 100 and 120 or 200 and 240 VAC.

The power cord set (applianc e co upl er, flexible cord, and wall plug) you received with the switch meets the requirements for use in the country where you purchased the switch.

Power cord sets for use in other countries must meet the requirements of the country where you use the switch. For more information on power cord set requirements, contact your Cabletron Systems Support Representative.

General Requirements

The requirements listed below are applicable to all countries:

The length of the power cord set must be at least 5.00 feet (1.5 m)

•

and a maximum of 6.56 feet (2.0 m). All power cord sets must be approved by an acceptable accredited

•

agency responsible for evaluation i n the cou ntry where the power cord set will be used.

The power cord set must have a mini mum current capacity of 10A

•

and a nominal voltage rating of 125 or 250 VAC, as required by each country’s power system.

The appliance coupler must meet the mechanical configuration of an

•

EN 60 320/IEC 320 Standard Sheet C13 connector for mating with appliance inlet on the switch.

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Country-Specific Requirements

Table A-3 lists the power cord set requirements by country and identifies the accredited agency within that country.

Table A-3. Power Cord Set Requirements by Country

Country Accredited Agency See Notes *

Australia EANSW 1 Austria OVE 1 Bel

ium CEBC 1 Canada CSA 2 Denmark DEMKO 1 Finland FIMKO 1 France UTE 1 Germany VDE 1 Italy IMQ 1 Japan JIS 3 Netherlands KEMA 1 Norway NEMKO 1 Sweden SEMKO 1 Switzerland SEV 1 United Kin United States UL 2 * The note column includes a number. Associate this number with the correspondin

notes listed after the table to obtain specific power standards and requirements.

dom BSI 1

NOTE 1

Flexible cord must be <HAR> Type HO5VV-F or HO3VV-F, 3-conductor,

1.0 mm

, or 0.75 mm2 conductor size. Power cord set fittings (appliance

coupler and wall plug) must bear the certification mark of t he agency responsible for evaluation in the country where it will be used.

NOTE 2

Flexible cord must be Type SV, SJ, SPT or equivalent, No. 18 AWG , 3conductor. Wall plug must be a two- pole grounding type with a NEMA 5 15P (15A, 125V) or NEMA 6-15P (15A 250V) configuration.

NOTE 3

Appliance coupler, flexible cord, and wall plug must bear a "T" mark and registration number in accordance with the Japanese Dentori Law. Flexible cord must be Type VCT or VCTF, 3-conductor, 0.75mm2 conductor size. Wall plug must be a two-pole grounding type with a Japanese Industrial St andard C8303 (15A, 125V) configuration.

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Page 95

APPENDIX B. SPANNING TREE CONCEPTS

General

The IEEE 802.1D Spanning Tree Protocol resolves the pro blems of physical loops in a network by establishing one primary path between any two switches in a network. An y duplicate paths are barred from use an d become standby or blocked paths until the original path fails, at which point they can be brought into service.

Spanning Tree Features

The ELS100-24TXM switch meets the requirements of the Spanning Tree Protocol (STP) by perfo rm ing the following functions:

•

Creates a single spanning tree from any arrangement of switching or bridging elements.

The term “switch” is used as an equi valent to “bridge” in this document.

•

Compensates automatically for the failure, removal, or addition of any device in an active data path.

•

Achieves port changes in short time intervals, which establishes a stable active topology quickl y wit h a mi nimum of network disturbance.

•

Uses a minimum amount of communicati ons bandwidth to accomplish the operation of the Spanning Tree Protocol.

•

Reconfigures the active topology in a manner that is transparen t t o stations transmitting and receiving data packets.

•

Manages the topology in a consist ent and reproducible manner through the use of Spanning Tr ee Pr otocol parameters.

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Spanning Tree Protocol in a Network

Figure B-1 illustrates t he use of three ELS100-24TXM switches to establish an effective Spanning Tree configuration. Switches A, B and C are connected together in a redundant topology (more than one path between two points). If the connection between A and B goes down, the link between A and C becomes activ e , t hereby establishing a path between A and B through switch C. Additionally, if the connection between B and C goes down, the link between A and C becomes active, establishing a path between B and C through switch A.

Figure B-1. Spanning Tree Using ELS100-24TXM Switche s

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Spanning Tree Protocol Parameters

gy g

Several configuration pa rameters control the oper at ion of the Spanning Tree Protocol. Table B-1 describes the parameters and lists the ELS100-24TXM switch def ault settings for each paramete r.

You can cause serious network performance degradation if you do not fully understand Spanning Tree concepts. Be sure to consult personnel experienced with this process prior to configuring Spanning Tree parameters.

Table B-1. Spanning Tree Protocol Defaults

Parameter Description Default Value

Brid

e Group Address

e Iden-

Brid tifier

Port Identifier

Unique MAC group address, recognized by all bridges in the network.

Identifier for each bridge. This parameter consists of two parts: a 16-bit brid adapter address. Ports are numbered in absolute numbers starting from 1 regardless of their bridge attachment. The net work adapt er addr ess is the same address as the first port of the bridge.

Identifies each port of each brid tal default value

Port 1 -32768 Port 9 -32776 Port 17 -32784

e priority and a 48-bit network

e, with an incremen-

iven for each port.

32768 (brid priority)

Port 2 -32769 Port 10 -32777 Port 18 -32785 Port 3 -32770 Port 11 -32778 Port 19 -32786 Port 4 -32771 Port 12 -32779 Port 20 -32787 Port 5 -32772 Port 13 -32780 Port 21 -32788 Port 6 -32773 Port 14 -32781 Port 22 -32789 Port 7 -32774 Port 15 -32782 Port 23 -32790 Port 8 -32775 Port 16 -32783 Port 24 -32791

Port Priority Indicates the priority of a specific port in relation to

other ports.

Cost Component of Each Port

The Spannin that an active topolo A value of 100 is networks and a value of 10 is 100Mbps Ethernet networks.

Tree Protocol calculates and ensu res

enerates minimal cost p aths.

enerally used for 10Mbps Ethernet

enerally used for

For detailed information on the operation of the Spanning Tree Protocol, consult Section 4 of IEEE Sta ndard 802.1D, ISO/IEC 10038:1993.

128

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Spanning Tree Protocol Operation

When the Spanning Tree Proto c ol is enabled for the first time or when there is a change in the network topology, such as a failure or the addition or removal of a component, the Spanning Tree Protocol automatically sets up the active topology of the current network.

Communicating Between Bridges

Periodically, all devices running the Spanning Tree Protocol on a network transmit packets to each other “in care of” the Bridge Group Address which all bridges share. When a bridge receives a frame sent to the Bridge Group Address, the bridge’s S panning Tree Protocol processes the packet. Application software and other LAN segments ignore the packet. Bridges communicate between each other in order to determine the Root Bridge.

Selecting a Root Bridge and Designated Bridges

During communication between bridges, one bridge is determined to have the lowest bridge identifier. This bridge becomes the Root Br idge.

After the Root Bridge has been selected, each LAN segment looks for the bridge that has the lowest cost relative to the Root Bridge. These bridges become Designated Bridg es.

Selecting Designated Ports

Each Designated Bridge sele cts a Designated Port. This port is responsible for forwarding packets to the Root Bridge.

Handling Duplicate Paths

When the active topology of the network is determined, all packets between any two nodes in the network use only one path. Where a duplicate path exists, the non-designated port is put into a blocking state.

Remapping Network Topology

If there is a change in the network topology due to a failure or the removal or addition of any active components, the active topology also changes. This may trigger a change in the state of some blocked ports.

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There are five (5) states that the ports can be in for spanning tree:

Blocking: A port in this state does not participate in the transmission

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of frames, thus preventing duplication arising through multiple paths existing in the active topol ogy of t he bridged LAN.

Listening: A port in this state is preparing to participate in th e

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transmission of frames. The tr ansmission of frames is tempor arily disabled in order to prevent tempora ry loops, which may occur in a bridged LAN during the lifetime of this state as the active topology of the bridged LAN changes.

Learning: A port in this state is preparing to participate in the

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transmission of frames. Forwarding: A port in this state is participating in the transmission of

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frames. Disabled: A port in this state does not participate in the transmission

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of frames or the operation of the spanning tree process.

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