A-8 APPENDIX A USING THE CONSOLE PORT | 3Com Hub 1000 SX specification

A-8APPENDIX A: USING THE CONSOLE PORT

A-8APPENDIX A: USING THE CONSOLE PORT

(5)Show port settings

(6)Use factory default settings

(7)Save new port settings

(8)Exit without change to settings

(9)Apply changes and exit

Selected ports: 3, 5, 6, 7

Enter choice -> 2

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Port Configuration Menu

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(1)Enable port

(2)Disable port

(3)Enable Auto-Negotiation

(4)Disable Auto-Negotiation (Force link)

(5)Show port settings

(6)Use factory default settings

(7)Save new port settings

(8)Exit without change to settings

(9)Apply changes and exit

Selected ports: 3, 5, 6, 7

Enter choice -> 9

Changes applied

Any time you select option 9 without selecting option 7, the settings will return to the previous values in the event of a hub reset. This allows you to experiment with port settings without specifying that they persist after a hub reset. If you want settings to persist, select option 7 before selecting option 9.

Disabling Disabling the auto-negotiation capability enables forced link on a port. Auto-NegotiationWhen forced link is enabled, linked devices must have matching ﬂow

control capabilities. For example, a port that is set for forced link and outgoing ﬂow control can connect successfully only with a port that is set for forced link and incoming ﬂow control.

When you disable auto-negotiation on a Hub 1000 SX port, you also need to set forced link on the connected device. On some devices, this setting is called forced conﬁguration or link negotiation. For details on the correct conﬁguration, see the conﬁguration guidelines for the linked device.

The following example shows how to disable auto-negotiation on port 1, save the new port setting, and apply it.

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3Com Hub 1000 SX manual A-8 APPENDIX A USING THE CONSOLE PORT

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 LEGENDS CONTENTS 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 Description Menu commands CommandsSETDEFAULT !0 -IP NETaddr = and buttons INTRODUCTION Hub 1000 SXGeneral Description Full-Duplex Downlinksand Uplink Operation Flow Control Features and Functions INSTALLING THE HUB SuperStack II Hub 1000 SX User Guide Hub Description The hub’s front and rear panels are shown in Figure Installing and Connecting the Hub 4 Repeat steps 2 and 3 for the other side of the hub Maximum Cable ConnectorTable 2-1 Downlink Connections Type Color Table 2-2 Hub 1000 SX IndicatorsIndicator Status Connecting a GBIC ModuleThe gigabit interface connector GBIC port on the rear panel of the Using Optional Power Systems Power Modules Cabling Options A hub connects to a UPS unit through the hub’s AC power cord Table 2-4 Advanced RPS Conﬁguration Options You 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 Lengths Servers Power WorkgroupAggregating connecting to the network backbone. See Figure Switches 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 CONNECTIONS Connecting 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 Solution USING THE CONSOLE PORT Requirements Connecting theWith Power Console Port Connecting the Console Port A-3 from powerTo connect the console port when the hub is disconnected Disconnected Logging On message, return the hub to the supplierAfter 4 minutes of inactivity, the CLI logs off automatically Changing the PasswordPort Settings Conﬁguring To display the Port Conﬁguration menu Configuring Port Settings Table A-2 Port Conﬁguration Menu A-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 Information Displaying Hub Status A-13 Restoring the Factory Default Settings A-14 APPENDIX A USING THE CONSOLE PORT entering option Updating theFirmware Image Checking the Xmodem-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 Technical 1 408 654 Access by Analog ModemAccess by Digital Modem C-2 APPENDIX C TECHNICAL SUPPORT Local access numbers are available within the following countries Central European HQ Santa Clara, CaliforniaCzech Republic/Slovak 305 261 3266 Miami, Florida To 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 signals ﬂow control IEEEincoming Mbps control. 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 SOFTWARE FCC CLASS A VERIFICATION STATEMENT LIMITATION OF LIABILITYGOVERNING LAW