3Com 3000 TX STP Configurations

5-16 CHAPTER 5: ADVANCED MANAGEMENT

STP Configurations

Figure 5-12 shows two possible STP configurations

using SuperStack II Switch units:

■Configuration 1 — Redun dancy for Back-

bone Link

In this configuration, a Desktop Switch and

Switch 3000 TX both have STP enabled and are

connected by two Fast Ethernet links. STP discov-

ers a duplicate path and disables one of the links.

If the enabled link breaks, the disabled link

becomes re-enabled, therefore maintaining con-

nectivity.

■Configuration 2 — Redundancy through

Meshed Backbone

In this configuration, four Switch 3000 TX units

are connected such that there are multiple paths

between them. STP discovers the duplicate paths

and disables two of the links. If an enabled link

breaks, one of the disabled links becomes

re-enabled, therefore maintaining connectivity.

Figure5-12 STP configurations

Contents

Main 3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 C A BOUT T HIS G 1 2 3 4 5 6 A B C D E F ABOUT THIS GUIDE Introduction How to Use This Guide Conventions Related Documentation 1 About the Switch 3000 TX Summary of Features Port Connections Switch Operation and Features Page Network Configuration Examples Page Page 100BASE-TX Ports LEDs Page Page Unit Defaults Managing the Switch 3000 TX Quick Start For SNMP Users Entering an IP Address for the Switch Page I S Configuration Rules for Fast Ethernet Configuration Rules with Full Duplex Page Installing the Switch 3000 TX Rack Mounting Stacking the Switch and Other Units Wall Mounting Powering-Up the Switch Connecting a Redundant Power System (RPS) Connecting Equipmen t to the Console Port Connecting a VT100 Terminal Connecting a VT100 Terminal Emulator Connecting a Workstation Running SLIP 3 Methods of Managing the Switch 3000 TX Using the VT100 Management Interface Using Telnet Managing Over Th e Network IP Addresses Page 3-4 CHAPTER 3: SETTING UP FOR MANAGEMENT Navigating the VT100 Screens Screen Conventions To differentiate types of information, the VT100 screens use the following conventions: Keyboard Shortcuts Correcting Text Entry Setting up the Switch for Management Logging On Page Page Switch Management Setup Page Page Logging Off Auto Logout M S T 3000 TX Setting Up Users Creating a New User Deleting a User Editing User Details Assigning Local Security Choosing a Switch Management Level Page Setting Up the Switch Unit Page Setting Up the Switch Ports Page Page Page Setting Up the Switch Database (SDB) The Database View Searching the Switch Database Adding an Entry into the SD B Deleting an Entry from the SDB Specifying that an Entry is Permanent Setting Up Resilient Links Configuring Resilient Links Creating a Resilient Link Pair Deleting a Resilient Link Pair Viewing the Resilient Links Setup Page Setting Up Traps Setting up the Console Port Page Resetting the Switch 3000 TX CAUTION: Initializing the Switch 3000 TX Upgrading Software 5 Virtual LANs (VLANs) What are VLANs? Benefits of VLANs An Example VLANs and the Switch 3000 TX Page Page VLAN Configurati on Example Page Setting Up VLANs on the Switch Page Setting Up VLANs Using Auto Select VLAN Mode Page Spanning Tree Protocol What is STP? Page How STP Works Page STP Configurations Enabling STP on the Switch Configuring STP on the Switch Page Page Page RMON What is RMON? About the RMON Groups Page Benefits of RMON RMON and the Switch RMON 5-25 RMON Features of the Switch Tab le 5-2 details the RMON support provided by the Switch. About Alarm Actions About Default Alarm Settings About the Audit Log Page 6 Summary Statistics Port Statistics Port Traffic Statistics Page Port Error Analysis Page Status Monitoring Fault Log Remote Polling A Important Safety Information Page Power Supply and Fuse Sockets for Redundant Power System (RPS) RJ45 Ports Linformation de Scurit Importante La Source de Courant et Le Fusible Socle Pour Alimentation Multiple Les Ports RJ45 Wichtige Sicherheit sinformationen Stromversorgung und Sicherung Steckdose fr Redundant Power System RJ45 Anschluen B B-2 APPENDIX B: SCREEN ACCESS RIGHTS C - N I T Using the VT100 Interface Using the Switch Page Page Page Page Page E Physical Dimensions E-2 APPENDIX E: SWITCH 3000 TX TECHNICAL SPECIFICATIONS F Online Technical Services World Wide Web Site 3Com Bulletin Board Service 3ComFacts Automated Fax Service 3ComForum on CompuServe Online Service Support from Your Network Supplier Support from 3Com F-4 APPENDIX F: TECHNICAL SUPPORT Returning Products for Repair Regional Sales Office Telephone Number 44 1442 438125 44 1442 435822 Elsewhere 1 408 326 7804 1 408 764 7120 G Page Page Page Page Page I Numerics A B C D E F H I K L M Q R S T U V W Z 3Com Corporation LIMITED WARRANTY H S S TANDARD W W ARRANTIES E ELECTRO-MAGNETIC COMPATIBILITY STATEMENTS FCC S CSA S VCCI S INFORMATION T