3Com 3CR17450-91, 3CR17451-91 manual Repeat steps 2 and 3 for the other side of the Switch

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22CHAPTER 2: INSTALLING THE SWITCH

Figure 4 Fitting a bracket for rack-mounting

You must use the screws supplied with the securing brackets. Damage caused to the unit by using incorrect screws invalidates your warranty.

4Repeat steps 2 and 3 for the other side of the Switch.

5Insert the Switch into the 19-inch rack and secure with suitable screws (not provided). Ensure that ventilation holes are not obstructed.

6Connect network cabling.

Placing Units On If the Switch units are free-standing, up to four units can be placed one

Top of Each Other on top of the other. If you are mixing a variety of Switch and Hub units, the smaller units must be positioned at the top.

If you are placing Switch units one on top of the other, you must use the self-adhesive rubber pads supplied. Apply the pads to the underside of each Switch, sticking one in the marked area at each corner. Place the Switch units on top of each other.

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Contents SuperStack 3 Switch 3870 Family Getting Started Guide 3Com Corporation Campus Drive Marlborough MA USA United States Government LegendContents Setting UP for Management PIN-OUTS Page About this Guide Conventions Icon DescriptionConvention Description Related DocumentationDocumentation documentation To access the online documentation from the CD-ROM CommentsSwitch 3870Hardware Features Switch Switch Front View Detail1000BASE-T Ports Color Indicates Port Status/Packet LEDs Stacking Status LEDStack Master LED Power/Self Test LED Fault LEDColor Indicates Module LEDs Unit LEDView Detail Feature Switch Port Status Duplex ModeType of Unit Total Units in the Stack Maximum Modules Port Port SpeedDefault Settings Introducing the Superstack 3 Switch Installing the Switch Package Contents Choosing a SuitableSite Power lines and fluorescent lighting fixtures To rack-mount your SwitchSwitch, as shown in Figure Rack-mountingRepeat steps 2 and 3 for the other side of the Switch Fitting a bracket for rack-mountingPower-up Powered-up and ready for operationSwitch SequencePower System output Cross-over Cable Straight-through CableSFP Operation Remove the plastic protective cover if fitted Your Switch TransceiverRemoving an SFP Installing the Switch Setting UP for Management Setting Up OverviewManual IP Configuration Automatic IP ConfigurationSetting UP for Management Manually Configuring IP Information Pre-requisitesConnecting the Workstation to the Switch Setting Up the Switch with IP InformationExample top-level command line interface menu Configured IP ViewingAutomatically Viewing Automatically Configured IP Information Viewing IP Information via the Console Port Refer to Setting Up Command Line Interface Management on Command Line Interface ManagementWeb Interface ManagementNetwork Using Telnet Where xxx.xxx.xxx.xxx is the IP address of the SwitchSetting Up Web InterfaceChoosing a Browser Over the NetworkSetting Up Snmp Default UsersPasswords User Default Access Level Name Password Security Device User Modify operation on the web interfaceProblem Solving Solving Problems Power/Self Test LED does not lightOn powering-up, the Power/Self Test LED remains yellow Indicated by LEDsProblems Refer to the list of suggested solutions belowSolving Hardware Port Status LED is flashing green/yellowFan failure warning message is received Unit fails or Snmp thermal shutdown trap is receivedSolving Communication Problems Error message indicating that the SFP transceiver is faultyIP Addressing How do you obtain a registered IP Address? Solving Software Upgrade Problems Problem Solving Safety Information Power Cord Set Japan Important Safety Information This must be approved for the country where it is usedImportant Safety Information ’information de Sécurité Importante Class’information de Sécurité Importante Dispositif Laser De Classe Wichtige Sicherheitsinformationen Vorsicht EuropeInformación de seguridad importante Laser Gerät der KlasseSchuko Appendix a Safety Information Importanti Informazioni di Sicurezza CSASolo Regno Ważne informacje o zabezpieczeniach Appendix a Safety Information Laser Produkt Klasa Appendix a Safety Information PC-AT Serial Cable Null Modem Cable RJ-45 to RS-232 25-pinRJ-45 to 9-pin Modem Cable RJ-45 Pin AssignmentsRJ-45 to RS-232 25-pin Pin Number 10/100 1000Pin Number 10/100 1000 Appendix B PIN-OUTS Switch 3870 24 Port Switch 3870 48 Port Product to Gain Service Benefits ServicesRegister Your PurchaseAccess Software DownloadsContact Us Telephone TechnicalAustralia 800 678 Philippines US and Canada Telephone Technical Support and Repair Index SFP Page Chapter Index Regulatory Notices