Initialize, Reboot | 3Com 3C16491 specification

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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3Com 3C16491 manual Initialize, Reboot

Contents

3C16491 Baseline Switch PWR Plus 3Com Corporation 350 Campus Drive Marlborough MA USA Contents Snmp Regulatory Notices Glossary Index Page Conventions About this Guide Product Registration Documentation Comments Features and Capabilities Overview of the Baseline SwitchAutosensing of MDI/MDIX Connections Autonegotiating 10/100 Mbps Ports Power-over-Ethernet Capability Physical FeaturesGigabit Combo Ports RJ-45/SFP Front Panel Gigabit Combo Ports RJ-45/SFP Link/Activity Status LEDs Rear Panel Power LED Package Contents Before You Begin Positioning the Switch Rack-Mounting or Free-Standing Using the Mounting Kit Placing Units On Top of Each Other Montagesatz Anweisungen Checking for Correct Operation Supplying Power to the Switch Approved SFP Transceivers Using SFP TranceiversInserting an SFP Transceiver Inserting an SFP Transceiver Removing an SFP Transceiver Performing Spot Checks Installing the Switch Running the Discovery Application Requirements for Accessing the Web Interface Welcome screen of Discovery appears Discovered Devices Screen Logging On to the Web Interface Menu Navigating the Web Interface Lists the available items on the menu Menu Item Port Status Buttons Dhcp Assigned IP Address Accessing the Interface Without Using DiscoveryManually Assigned Static IP Address Device Summary Information Configuration Overview Polling Interval Device View Modifying the IP Address Settings Administration SettingsAutomatic IP Configuration Color Key To set the IP address for the Switch IP Setup Restore Configuration Backup Configuration Upgrade Screen Firmware Upgrade Initialize Reboot User Summary System Access Modify User Create User Remove User System Time Summary SetupSnmp Add Snmp Remove Configuring VLANs Vlan Modify Port Modify Vlan Modify Port Screen Rename Port Detail RemoveVlan Detail Forwarding Tagged/Untagged Frames Sample Vlan Configurations Setting Up Vlan Across Two Switches Setting Up Two VLANs on the Same Switch Spanning Tree Tagged Vlan Configuration Spanning Tree Screen Igmp Query Igmp SnoopingBroadcast Storm PoE Broadcast Storm Setup Screen Administration Configuring Port Settings Detail Port Administration Summary Screen Speed/Duplex for 1000 Mbps Connections Port Administration Setup Screen Guidelines for Creating Trunks Link Aggregation Link Aggregation Summary Screen Create Link Aggregation Modify Screen Modify Spanning Tree per Port Spanning Tree Summary Screen Port Mirroring Spanning Tree Setup Screen Statistics Port Mirroring Setup Screen QoS VoIP Summary Screen QoS VoIP Traffic Settings QoS VoIP Setup Screen Port Setup OUI Add OUI Summary Radius Client Security Radius Client Detail Screen Configure 802.1X Summary Screen 802.1X Settings 802.1X Detail Screen Address Table Monitoring Address Table Screen Cable Diagnostics Cable Diagnostic Screen Diagnostics Resetting to Factory Defaults Troubleshooting Solving 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 off All ports appear to show continual activity If the Problem Persists Troubleshoot Online Access Software Downloads Purchase Value-Added ServicesRegister Your Product Contact Us Telephone Technical Support and Repair Country Telephone Number Latsupportanc@3com.com Environmental Related StandardsPhysical Electrical Appendix B Technical Information Important Safety Information Safety Information Appendix C Safety Information Regulatory Notices Page Auto-negotiation 1000BASE-TBandwidth Category 5 Cables Category 3 CablesCategory 5e Cables Category 6 Cables Half Duplex Full DuplexIeee 802.1D Ieee 802.1Q Link Aggregation LayerMAC Address Network Server SwitchSubnet Address Subnet Mask Vlan Numbers Index Index