3Com 3C16491 manual Initialize, Reboot

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case the upgrade process fails for any reason (for example, the connection between the computer and the Switch is lost while the new firmware is being copied to the Switch).

A progress screen displays while the upgrade is taking place.

The upgrade procedure can take a few minutes, and is complete when the progress bar has finished running and the Power LED has stopped flashing and is permanently green.

CAUTION: Do not interrupt power to the Switch during the upgrade procedure. If you do, the firmware may be corrupted and the Switch may not start up properly afterwards.

Initialize

To reset the Switch to factory default settings:

1Click Administration, then Initialize on the menu.

Administration Settings

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You will lose all your configuration changes. The Switch LAN IP address will revert to the default IP address 169.254.x.y. (see “Automatic IP Configuration” on page 33). You may need to restart your computer to re-establish communication with the Switch.

Reboot

Clicking on Administration, then Reboot on the menu has the same effect as power cycling the unit. No configuration information will be lost. Reboot the Switch if you are experiencing problems and you want to re-establish your Internet connection.

Any network users that are currently accessing the Internet will have their access interrupted while the reboot takes place, and they may need to restart their computers when the reboot has completed and the Switch is operational again.

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Contents 3C16491 Baseline Switch PWR Plus3Com Corporation 350 Campus Drive Marlborough MA USA Contents Snmp Regulatory Notices Glossary Index Page Conventions About this GuideProduct Registration Documentation CommentsFeatures and Capabilities Overview of the Baseline SwitchAutosensing of MDI/MDIX Connections Autonegotiating 10/100 Mbps PortsPower-over-Ethernet Capability Physical FeaturesGigabit Combo Ports RJ-45/SFP Front PanelGigabit Combo Ports RJ-45/SFP Link/Activity Status LEDs Rear Panel Power LEDPackage Contents Before You Begin Positioning the SwitchRack-Mounting or Free-Standing Using the Mounting KitPlacing Units On Top of Each Other Montagesatz AnweisungenChecking for Correct Operation Supplying Power to the SwitchApproved SFP Transceivers Using SFP TranceiversInserting an SFP Transceiver Inserting an SFP Transceiver Removing an SFP TransceiverPerforming Spot Checks Installing the Switch Running the Discovery Application Requirements for Accessing the Web InterfaceWelcome screen of Discovery appears Discovered Devices Screen Logging On to the Web InterfaceMenu Navigating the Web InterfaceLists the available items on the menu Menu Item Port Status ButtonsDhcp Assigned IP Address Accessing the Interface Without Using DiscoveryManually Assigned Static IP Address Device Summary Information Configuration OverviewPolling Interval Device ViewModifying the IP Address Settings Administration SettingsAutomatic IP Configuration Color KeyTo set the IP address for the Switch IP SetupRestore Configuration Backup ConfigurationUpgrade Screen Firmware UpgradeInitialize RebootUser Summary System AccessModify User Create UserRemove User System TimeSummary SetupSnmp Add Snmp Remove Configuring VLANsVlan Modify Port Modify VlanModify Port Screen RenamePort Detail RemoveVlan Detail Forwarding Tagged/Untagged Frames Sample Vlan ConfigurationsSetting Up Vlan Across Two Switches Setting Up Two VLANs on the Same SwitchSpanning Tree Tagged Vlan ConfigurationSpanning Tree Screen Igmp Query Igmp SnoopingBroadcast Storm PoE Broadcast Storm Setup ScreenAdministration Configuring Port SettingsDetail Port Administration Summary ScreenSpeed/Duplex for 1000 Mbps Connections Port Administration Setup ScreenGuidelines for Creating Trunks Link AggregationLink Aggregation Summary Screen CreateLink Aggregation Modify Screen ModifySpanning Tree per Port Spanning Tree Summary Screen Port Mirroring Spanning Tree Setup ScreenStatistics Port Mirroring Setup ScreenQoS VoIP Summary Screen QoS VoIP Traffic SettingsQoS VoIP Setup Screen Port SetupOUI Add OUI SummaryRadius Client SecurityRadius Client Detail Screen Configure802.1X Summary Screen 802.1X Settings802.1X Detail Screen Address Table MonitoringAddress Table Screen Cable DiagnosticsCable Diagnostic Screen DiagnosticsResetting to Factory Defaults TroubleshootingSolving LED Issues Forgotten PasswordForgotten Static IP Address Link/Activity LED is on, but network performance is poor Fiber cable is connected, but the Module Active LED is offAll ports appear to show continual activity If the Problem PersistsTroubleshoot Online Access Software Downloads Purchase Value-Added ServicesRegister Your Product Contact Us Telephone Technical Support and RepairCountry Telephone Number Latsupportanc@3com.com Environmental Related StandardsPhysical ElectricalAppendix B Technical Information Important Safety Information Safety InformationAppendix C Safety Information Regulatory Notices Page Auto-negotiation 1000BASE-TBandwidth Category 5 Cables Category 3 CablesCategory 5e Cables Category 6 CablesHalf Duplex Full DuplexIeee 802.1D Ieee 802.1QLink Aggregation LayerMAC Address NetworkServer SwitchSubnet Address Subnet MaskVlan Numbers IndexIndex