3Com Hub 1000 SX Technical Support, Online Technical, Services, 3Com Bulletin, Board Service

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TECHNICAL SUPPORT

C

TECHNICAL SUPPORT

	3Com provides easy access to technical support information through a
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	Information contained in this appendix is correct at time of publication.
	For the very latest, we recommend that you access 3Com Corporation’s
	World Wide Web site.

Online Technical	3Com offers worldwide product support 24 hours a day, 7 days a week,
Services	through the following online systems:
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	■ 3Com Bulletin Board Service (3ComBBS)
	■ 3ComFactsSM automated fax service
	■ 3ComForum on CompuServe online service
World Wide Web Site	Access the latest networking information on 3Com Corporation’s
	World Wide Web site by entering our URL into your Internet browser:
	http://www.3com.com/
	This service features the latest information about 3Com solutions and
	technologies, customer service and support, news about the company,
	Net Age® Magazine, technical documentation, and more.
3Com Bulletin	3ComBBS contains patches, software, and drivers for all 3Com products,
Board Service	as well as technical articles. This service is available through analog
	modem or digital modem (ISDN) 24 hours a day, 7 days a week.

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Contents User Guide SuperStack II Hub 1000 SXA member of the 3Com SuperStack II System UNITED STATES GOVERNMENT LEGENDS 3Com Corporation 5400 Bayfront Plaza Santa Clara, California2 INSTALLING THE HUB CONTENTSABOUT THIS GUIDE 1 INTRODUCTION 3 MAKING CONNECTIONS A USING THE CONSOLE PORTPOST Messages FCC CLASS A VERIFICATION STATEMENT SPECIFICATIONSGLOSSARY INDEX 3COM CORPORATION LIMITED WARRANTY TECHNICAL SUPPORTPage FIGURES Page Port Conﬁguration Menu TABLESPage Description ABOUT THIS GUIDEIcon Notice Typeand buttons CommandsSETDEFAULT !0 -IP NETaddr = Menu commandsHub 1000 SX INTRODUCTIONGeneral Description Operation Downlinksand Uplink Full-DuplexFlow Control Functions Features andSuperStack II Hub 1000 SX User Guide INSTALLING THE HUBHub Description The hub’s front and rear panels are shown in Figure Connecting the Hub Installing and4 Repeat steps 2 and 3 for the other side of the hub Type ConnectorTable 2-1 Downlink Connections Maximum CableStatus Table 2-2 Hub 1000 SX IndicatorsIndicator ColorGBIC Module Connecting aThe gigabit interface connector GBIC port on the rear panel of the Power Systems Using OptionalCabling Options Power ModulesTable 2-4 Advanced RPS Conﬁguration Options A hub connects to a UPS unit through the hub’s AC power cordYou can connect a UPS unit to an Advanced RPS unit as long as you do not exceed the maximum wattage 325 watts for the UPS unit. To verify that the UPS unit’s maximum wattage is not exceeded, calculate the total power consumption of all units connected to the Advanced RPS. If the result is less than 325 watts, your conﬁguration is safe if the result is greater than 325 watts, then there are too many units connected to the Advanced RPS Page Table 3-1 Gigabit Ethernet Maximum Cable Lengths MAKING CONNECTIONSconnecting to the network backbone. See Figure Power WorkgroupAggregating ServersThe Hub 1000 SX does not support bandwidth aggregation trunking SwitchesYou can use the Hub 1000 SX downlinks to aggregate 10/100 Mbps 3-4 CHAPTER 3 MAKING CONNECTIONS Figure 3-3 Aggregated Switches ConnectionFigure 3-4 Mixed Connection ConnectingThe best use of the hub uplink is as a backbone connection to a 3Com Solution Figure 3-6 Uplink Connection to a 10/100 Mbps SwitchTable 3-2 Troubleshooting Tips SymptomUSING THE CONSOLE PORT Console Port Connecting theWith Power RequirementsDisconnected from powerTo connect the console port when the hub is disconnected Connecting the Console Port A-3message, return the hub to the supplier Logging OnAfter 4 minutes of inactivity, the CLI logs off automatically Conﬁguring PasswordPort Settings Changing theTo display the Port Conﬁguration menu Table A-2 Port Conﬁguration Menu Configuring Port SettingsA-8 APPENDIX A USING THE CONSOLE PORT Configuring Port Settings and be conﬁgured to receive pause frames Configuring Port Settings A-11 Table A-3 Hub Status Information DisplayingHub Status matrix, Y indicates yes and n indicates no. See Table A-3Displaying Hub Status A-13 A-14 APPENDIX A USING THE CONSOLE PORT Restoring the Factory Default SettingsChecking the Updating theFirmware Image entering optionXmodem-CRC To transfer the ﬁrmware image ﬁle Logging Off during a ﬁrmware update, the CLI displays the following messagelog in again. To restart the ﬁle transfer, repeat steps 6 and Table A-5 Fatal Error Messages Table A-4 File Transfer Error MessagesWhile saving port settings or Physical Dimensions SPECIFICATIONSEnvironmental Operating Ranges Page Online Technical ServicesBoard Service TECHNICAL SUPPORTC-2 APPENDIX C TECHNICAL SUPPORT Access by Analog ModemAccess by Digital Modem 1 408 654Local access numbers are available within the following countries 305 261 3266 Miami, Florida Santa Clara, CaliforniaCzech Republic/Slovak Central European HQTo obtain an RMA number, call or fax Page GLOSSARY transmission of light signals Carrier Sense Multiple Access/Collision Detection. Channel accesscable is based on CSMA/CD Carrier Sense Multiple Access/Collision access methodMbps IEEEincoming ﬂow controlcontrol. See also asymmetric ﬂow control, ﬂow control, pause frame INDEX SymbolsNumbers Page Switch 9300 3-2, 3-3 Page SOFTWARE 3Com Corporation LIMITED WARRANTYSTANDARD WARRANTY SERVICE HARDWARELIMITATION OF LIABILITY FCC CLASS A VERIFICATION STATEMENTGOVERNING LAW