3Com Hub 1000 SX manual Connecting, 4 Mixed Connection

Page 33

Figure 3-4Mixed Connection

Connecting Through the Uplink 3-5

SuperStack II

Switch 9300

Single-mode fiber-optic cable

SuperStack II

Maximum distance: 3 km

Hub 1000 SX

Servers with 3C985-SX Gigabit EtherLink Server NICs

62.5/125 ∝ fiber-optic cable Maximum distance: 260 m

SuperStack II Switch 3900

SuperStack II Switch 3000 with 3C16925 uplink device

SuperStack II

Switch 1000 with 3C16925 uplink device

10/100 Mbps

UTP links

Maximum distance: 100 m

Multiple 10/100 Mbps	Multiple 10 Mbps
clients	clients

	Figure 3-4Mixed Connection
Connecting	The best use of the hub uplink is as a backbone connection to a 3Com

Through the Uplink SuperStack II Switch 9300 Gigabit Ethernet switch, as shown earlier in Figure 3-1 through Figure 3-2. Although two Hub 1000 SX units can be connected to each other through their uplinks, as shown in Figure 3-5, such a connection excludes connection to the network backbone.

Single-mode fiber-optic cable

Maximum distance: 3 km

SuperStack II Hub 1000 SX

SuperStack II Hub 1000 SX

Figure 3-5Connection to Another Hub 1000 SX

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Contents SuperStack II Hub 1000 SX User GuideA member of the 3Com SuperStack II System UNITED STATES GOVERNMENT LEGENDS 3Com Corporation 5400 Bayfront Plaza Santa Clara, CaliforniaCONTENTS 2 INSTALLING THE HUBABOUT THIS GUIDE 1 INTRODUCTION A USING THE CONSOLE PORT 3 MAKING CONNECTIONSPOST Messages GLOSSARY INDEX 3COM CORPORATION LIMITED WARRANTY SPECIFICATIONSTECHNICAL SUPPORT FCC CLASS A VERIFICATION STATEMENTPage FIGURES Page Port Conﬁguration Menu TABLESPage Icon ABOUT THIS GUIDENotice Type DescriptionSETDEFAULT !0 -IP NETaddr = CommandsMenu commands and buttonsINTRODUCTION Hub 1000 SXGeneral Description and Uplink DownlinksFull-Duplex OperationFlow 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 Table 2-1 Downlink Connections ConnectorMaximum Cable TypeIndicator Table 2-2 Hub 1000 SX IndicatorsColor StatusConnecting a GBIC ModuleThe 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 CONNECTIONSAggregating Power WorkgroupServers connecting to the network backbone. See FigureSwitches The Hub 1000 SX does not support bandwidth aggregation trunkingYou can use the Hub 1000 SX downlinks to aggregate 10/100 Mbps 3-4 CHAPTER 3 MAKING CONNECTIONS Figure 3-3 Aggregated Switches ConnectionConnecting Figure 3-4 Mixed ConnectionThe best use of the hub uplink is as a backbone connection to a 3Com Table 3-2 Troubleshooting Tips Figure 3-6 Uplink Connection to a 10/100 Mbps SwitchSymptom SolutionUSING THE CONSOLE PORT With Power Connecting theRequirements Console PortTo connect the console port when the hub is disconnected from powerConnecting the Console Port A-3 DisconnectedLogging On message, return the hub to the supplierAfter 4 minutes of inactivity, the CLI logs off automatically Port Settings PasswordChanging the ConﬁguringTo 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 Hub Status Displayingmatrix, Y indicates yes and n indicates no. See Table A-3 Table A-3 Hub Status InformationDisplaying Hub Status A-13 A-14 APPENDIX A USING THE CONSOLE PORT Restoring the Factory Default SettingsFirmware Image Updating theentering option Checking theXmodem-CRC To transfer the ﬁrmware image ﬁle during a ﬁrmware update, the CLI displays the following message Logging Offlog in again. To restart the ﬁle transfer, repeat steps 6 and Table A-4 File Transfer Error Messages Table A-5 Fatal Error MessagesWhile saving port settings or SPECIFICATIONS Physical DimensionsEnvironmental Operating Ranges Page Board Service ServicesTECHNICAL SUPPORT Online TechnicalAccess by Digital Modem Access by Analog Modem1 408 654 C-2 APPENDIX C TECHNICAL SUPPORTLocal access numbers are available within the following countries Czech Republic/Slovak Santa Clara, CaliforniaCentral European HQ 305 261 3266 Miami, FloridaTo obtain an RMA number, call or fax Page GLOSSARY cable is based on CSMA/CD Carrier Sense Multiple Access/Collision Carrier Sense Multiple Access/Collision Detection. Channel accessaccess method transmission of light signalsincoming IEEEﬂow control Mbpscontrol. See also asymmetric ﬂow control, ﬂow control, pause frame Symbols INDEXNumbers Page Switch 9300 3-2, 3-3 Page STANDARD WARRANTY SERVICE 3Com Corporation LIMITED WARRANTYHARDWARE SOFTWAREFCC CLASS A VERIFICATION STATEMENT LIMITATION OF LIABILITYGOVERNING LAW