3Com Hub 1000 SX manual Hub Description The hub’s front and rear panels are shown in Figure

Page 18

Hub Description The hub’s front and rear panels are shown in Figure 2-1.

2-2CHAPTER 2: INSTALLING THE HUB

If you need to return the hub to 3Com, pack it in the original (or equivalent) packing material to maintain the warranty.

If you ordered a GBIC module or optional power system, it is packaged separately from the hub.

Hub Description The hub’s front and rear panels are shown in Figure 2-1.

Front panel

1000BASE-SX

TX

1

RX

TX

2

RX

TX

3

RX

TX

4

RX

TX

5

RX

TX

6

RX

TX

7

RX

TX

8

RX

3C510-SX

100						PORT STATUS						SUPER
						PORT STATUS						STACK
50		ACTIVITY								OVERTEMP	RPS ON	UNIT
50												STATUS
		LINK								PWR	RPS FAIL	PAUSE
		1	2	3	4	5	6	7	8	9
10												SuperStack II
10												SuperStack II
% BW USAGE												HUB 1000 SX

1000BASE-SX downlink ports	% BW
	usage meter

Hub operation

LEDs

PORT STATUS

LEDs

Rear panel

AC

IN

REFER TO

INSTRUCTION MANUAL

FOR CORRECT !

SELECTION OF

POWER CORD

CAUTION: For continued protection against risk of fire use only with same type and rating of of anti-surge fuse.

SUPPLY DATA


FUSE	V~	H z	A
2.0 A	100-240	50/60	1.0

3Com Corporation

Santa Clara, CA

Made in USA

INPUT

V	5	+12	-12
A max	8.5	2.5	1.0

DC POWER

CONSOLE

GBIC

RESET

AC input

DC power

Console

Reset

GBIC port

Figure 2-1Hub 1000 SX Front and Rear Panels

Front Panel Eight 850-nanometer (nm) ﬁber-optic 1000BASE-SX Gigabit Ethernet downlink ports accept SC connectors and support 50/125 ∝ or 62.5/125 ∝ ﬁber-optic cable. The ports can connect to servers that are equipped with Gigabit Ethernet NICs or to switches that are equipped with Gigabit Ethernet uplink devices.

Indicators (see Table 2-2) show hub and port status when power is on.

Image 18

Contents SuperStack II Hub 1000 SX User GuideA member of the 3Com SuperStack II System 3Com Corporation 5400 Bayfront Plaza Santa Clara, California UNITED STATES GOVERNMENT LEGENDSCONTENTS 2 INSTALLING THE HUBABOUT THIS GUIDE 1 INTRODUCTION A USING THE CONSOLE PORT 3 MAKING CONNECTIONSPOST Messages TECHNICAL SUPPORT SPECIFICATIONSGLOSSARY INDEX 3COM CORPORATION LIMITED WARRANTY FCC CLASS A VERIFICATION STATEMENTPage FIGURES Page TABLES Port Conﬁguration MenuPage Notice Type ABOUT THIS GUIDEIcon DescriptionMenu commands CommandsSETDEFAULT !0 -IP NETaddr = and buttonsINTRODUCTION Hub 1000 SXGeneral Description Full-Duplex Downlinksand Uplink OperationFlow Control Features and FunctionsINSTALLING THE HUB SuperStack II Hub 1000 SX User GuideHub Description The hub’s front and rear panels are shown in Figure Installing and Connecting the Hub4 Repeat steps 2 and 3 for the other side of the hub Maximum Cable ConnectorTable 2-1 Downlink Connections TypeColor Table 2-2 Hub 1000 SX IndicatorsIndicator StatusConnecting a GBIC ModuleThe gigabit interface connector GBIC port on the rear panel of the Using Optional Power SystemsPower Modules Cabling OptionsA hub connects to a UPS unit through the hub’s AC power cord Table 2-4 Advanced RPS Conﬁguration OptionsYou 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 MAKING CONNECTIONS Table 3-1 Gigabit Ethernet Maximum Cable LengthsServers Power WorkgroupAggregating 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 Figure 3-3 Aggregated Switches Connection 3-4 CHAPTER 3 MAKING CONNECTIONSConnecting Figure 3-4 Mixed ConnectionThe best use of the hub uplink is as a backbone connection to a 3Com Symptom Figure 3-6 Uplink Connection to a 10/100 Mbps SwitchTable 3-2 Troubleshooting Tips SolutionUSING THE CONSOLE PORT Requirements Connecting theWith Power Console PortConnecting the Console Port A-3 from powerTo connect the console port when the hub is disconnected DisconnectedLogging On message, return the hub to the supplierAfter 4 minutes of inactivity, the CLI logs off automatically Changing the PasswordPort Settings ConﬁguringTo display the Port Conﬁguration menu Configuring Port Settings Table A-2 Port Conﬁguration MenuA-8 APPENDIX A USING THE CONSOLE PORT Configuring Port Settings and be conﬁgured to receive pause frames Configuring Port Settings A-11 matrix, Y indicates yes and n indicates no. See Table A-3 DisplayingHub Status Table A-3 Hub Status InformationDisplaying Hub Status A-13 Restoring the Factory Default Settings A-14 APPENDIX A USING THE CONSOLE PORTentering option Updating theFirmware Image 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 TECHNICAL SUPPORT ServicesBoard Service Online Technical1 408 654 Access by Analog ModemAccess by Digital Modem C-2 APPENDIX C TECHNICAL SUPPORTLocal access numbers are available within the following countries Central European HQ Santa Clara, CaliforniaCzech Republic/Slovak 305 261 3266 Miami, FloridaTo obtain an RMA number, call or fax Page GLOSSARY access method Carrier Sense Multiple Access/Collision Detection. Channel accesscable is based on CSMA/CD Carrier Sense Multiple Access/Collision transmission of light signalsﬂow control IEEEincoming Mbpscontrol. See also asymmetric ﬂow control, ﬂow control, pause frame Symbols INDEXNumbers Page Switch 9300 3-2, 3-3 Page HARDWARE 3Com Corporation LIMITED WARRANTYSTANDARD WARRANTY SERVICE SOFTWAREFCC CLASS A VERIFICATION STATEMENT LIMITATION OF LIABILITYGOVERNING LAW