3Com 3CR16709-91, 3CR16708-91 manual Solving Software Upgrade Problems

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Solving Software Upgrade Problems

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The Internet Assigned Numbers Authority is the organization responsible for supplying registered IP addresses. The following contact information is correct at time of publication:

World Wide Web site: http://www.iana.org/

If your IP network is internal to your organization only, that is, you do not access the Internet, you may use any arbitrary IP address as long as it is not being used by another device on your network. 3Com suggests you use addresses in the range 192.168.0.0 to 192.168.255.255 with a subnet mask of 255.255.255.0.

These suggested IP addresses are part of a group of IP addresses that have been set aside specially for use ‘in house’ only.

Solving Software You can upgrade the management software of the Switch by using the Upgrade Problems System > Control > Software Upgrade operation in the Web Interface, or

the system control softwareUpgrade command in the command line interface. For details on these options, refer to the Management Interface Reference Guide supplied in HTML format on the CD-ROM that accompanies your Switch.

If you have problems with your software upgrade, refer to the Problem

Solving section in the Management Interface Reference Guide.

Recovering from a The password recovery mechanism assumes that the Switch is located in

Lost Password a physically secure area, and access is restricted to legitimate network administrators. The first time the Switch is powered on, you will be prompted to set a password for administrator access. Record the password and store it in a safe place.

If you forget the password, follow this recovery procedure:

■Connect a workstation to the Switch’s console port.

■Use a terminal emulation software package such as Microsoft Hyperterminal to connect to the console interface on the Switch.

■Log onto the Switch with the reserved user name “recover” and the password “recover” to place it into password recovery mode.

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Contents 3CR16708-91 3CR16709-91 United States Government Legend 3Com Corporation Campus Drive Marlborough, MA USAContents Setting UP for Management Outs Problem SolvingPage About this Guide Icon Description ConventionsConvention Description Documentation RelatedDocumentation Pddtechpubscomments@3com.com CommentsIntroducing Hardware Features Switch Alert LED Power LED Port Status Leds PoE Status Leds Switch Front View Detail100BASE-FX Port Status LEDs Switch 9 FX only SFP Module Status LED Switch 9 FX onlyColor Indicates 10BASE-T/100BASE-TX Port Status LEDs Alert LED LEDSwitch 9 rear view Switch Rear View DetailSwitch Rear View Detail Page Default Settings shows the default settings for the Switch Page Installing the Switch Choosing a Suitable Package ContentsSite Air temperature around the Switch does not exceed 50 C 122 F Instructions for Cement Walls Wall-mountingUpwards MountingMake two holes 150 mm 5.9 in. apart Instructions for Wood WallsColor State Power and Alert LED colorsPower-up Sequence Cross-over Cable Straight-through Cable SFP Operation Installing the Switch Inserting a SFP Transceiver Installing the Switch Setting UP for Management Overview Setting UpConfigure IP information manually for your Switch or view Automatically configured IP informationAutomatic IP Configuration Manual IP ConfigurationSetting UP for Management Pre-requisites Manually Configuring IP InformationConnecting a workstation to the Switch via the console port Connecting the Workstation to the SwitchExample top-level command line interface menu Setting Up the Switch with IP InformationViewing Configured IPAutomatically Viewing Automatically Configured IP Information Viewing IP Information via the Console Port Methods of Managing a Switch Refer to Setting Up Web Interface Management on Refer to Setting Up Command Line Interface Management onCLI Management via Command LineNetwork Using Telnet Interface ManagementInterface Setting Up WebChoosing a Browser Management workstation Setting Up SnmpManagement Protocol Snmp can manage a Switch if Over the NetworkUser Default Name Password Access Level Default UsersDefault Users and Passwords Setting UP for Management Problem Solving Indicated by LEDs Solving ProblemsRefer to the list of suggested solutions below ProblemsSolving Hardware IP Addressing Solving Communication ProblemsHow do you obtain a registered IP Address? Solving Software Upgrade Problems Problem Solving Safety Information This must be approved for the country where it is used Power Cord Set Japan Important Safety InformationImportant Safety Information Schko ’information de Sécurité Importante’information de Sécurité Importante Vorsicht Europe Wichtige SicherheitsinformationenInformación de seguridad importante Schuko Dispositivo Láser DE Clase CSA Importanti Informazioni di SicurezzaAvvertenza porte a fibre ottiche Protezione degli occhi Appendix a Safety Information Panel. The pinout is shown below RJ-45 Pin Signal DB-9 Pin DirectionRJ-45 to RS-232 Adapter CablePin Number ConnectorsRJ-45 Pin AssignmentsOfficeConnect Managed Switch 9 and Switch 9 FX Standards Supported Protocols Used for AdministrationTerminal Emulation Purchase ServicesRegister Your ProductDownloads Access SoftwareTroubleshoot OnlineContact Us Latin America Telephone Technical Support and Repair Country Telephone NumberUS and Canada Telephone Technical Support and Repair Index Snmp Regulatory Notices