Canton 3C16476CS manual Telephone Technical Support and Repair, Contact Us

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64APPENDIX A: OBTAINING SUPPORT FOR YOUR PRODUCT

at http://eSupport.3com.com/, or under the Product Support heading at http://www.3com.com/

Software Upgrades are the software releases that follow the software version included with your origi- nal product. In order to access upgrades and related documentation you must first purchase a service con- tract from 3Com or your reseller.

Telephone Technical Support and Repair

To obtain telephone support as part of your warranty and other service benefits, you must first register your product at http://eSupport.3com.com/

Warranty and other service benefits start from the date of purchase, so it is important to register your product quickly to ensure you get full use of the war- ranty and other service benefits available to you.

When you contact 3Com for assistance, please have the following information ready:

Product model name, part number, and serial number

Proof of purchase, if you have not pre-registered your product

A list of system hardware and software, including revision level

Diagnostic error messages

Details about recent configuration changes, if applicable

To send a product directly to 3Com for repair, you must first obtain a return authorization number (RMA). Products sent to 3Com, without authorization numbers clearly marked on the outside of the pack- age, will be returned to the sender unopened, at the sender’s expense. If your product is registered and under warranty, you can obtain an RMA number online at http://eSupport.3com.com/. First time users will need to apply for a user name and pass- word.

Contact Us

3Com offers telephone, e-mail and internet access to technical support and repair services. To access these services for your region, use the appropriate telephone number, URL or e-mail address from the list below.

Telephone numbers are correct at the time of publica- tion. Find a current directory of support telephone numbers posted on the 3Com web site at

http://csoweb4.3com.com/contactus/

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Contents Baseline Switch 2250 Plus 3C16476CSRegulated Materials Statement End of Life StatementEnvironmental Statement about the Documentation Contents Safety Information Icon Description ConventionsConvention Description Related Documentation Documentation CommentsOverview of the Baseline Switch 2250 Plus Features and CapabilitiesAutosensing of MDI/MDIX Connections Autonegotiating 10/100 Mbps PortsSFP Ports Traffic PrioritizationForwarding of Bpdu Packets Priority LevelFront Panel Physical Features48 RJ-45 Ports Link/Activity LEDs 10/100/1000BASE-T/SFP PortsStatusMeaning Module Active LEDs Status MeaningPackage Contents Positioning the Switch Before You BeginUsing the Mounting Kit Aufstellen des SwitchRack-Mounting or Free-Standing Montagesatz Anweisungen Inserting the ScrewsSupplying Power to the Switch Placing Units On Top of Each OtherChecking for Correct Operation Color StateConnecting a Network Device Connecting Devices to the SwitchApproved SFP Transceivers Using SFP TransceiversInserting an SFP Transceiver Removing an SFP Transceiver Performing Spot ChecksVerify That Installing the Switch Requirements for Accessing the Web Interface Running the Discovery ApplicationWelcome screen of Discovery appears Navigating the Web Interface Logging On to the Web InterfaceMenu Lists the available items on the menu Menu Item DescriptionButtons Navigating the Web InterfaceDhcp Assigned IP Address Accessing the Interface Without Using DiscoveryManually Assigned Static IP Address Device Summary Information Configuration OverviewDevice View Polling Interval Color KeyModifying the IP Address Settings Administration SettingsAutomatic IP Configuration Backup Configuration IP SetupRestore Configuration Firmware Upgrade InitializeSystem Access RebootUser Summary Modify User Create UserRemove User Setup System TimeSummary Snmp AddConfiguring VLANs Snmp RemoveVlan Modify VlanModify Port Modify Vlan ScreenRename RemovePort Detail Forwarding Tagged/Untagged FramesVlan Detail Setting Up Two VLANs on the Same Switch Sample Vlan ConfigurationsSetting Up Vlan Across Two Switches Tagged Vlan Configuration Spanning TreeIgmp Snooping Igmp QueryAdministration Configuring Port SettingsBroadcast Storm Port Administration Summary Screen DetailSpeed/Duplex for 1000 Mbps Connections Link AggregationGuidelines for Creating Trunks CreateSpanning Tree per Port ModifySpanning Tree Summary Screen Port Mirroring Spanning Tree Detail ScreenQoS VoIP Traffic Settings Port Mirroring ScreenPort Setup QoS VoIP Setup ScreenOUI Summary OUI ModifySecurity ConfigureRadius Client 802.1X Settings Radius Client Configure Screen802.1X Setup Screen Monitoring Cable DiagnosticsAddress Table Diagnostics Cable Diagnostic ScreenConfiguring the Switch Resetting to Factory Defaults Forgotten PasswordSolving LED Issues Forgotten Static IP AddressFiber cable is connected, but the Module Active LED is off Link/Activity LED is on, but network perfor- mance is poorIf the Problem Persists All ports appear to show continual activityTroubleshooting Troubleshoot Online Access Software Downloads Purchase Value-Added ServicesRegister Your Product Telephone Technical Support and Repair Contact UsCountry Telephone Number CountryUS and Canada Telephone Technical Support and Repair Safety Information Important Safety InformationAppendix B Safety Information Related Standards EnvironmentalPhysical ElectricalAppendix C Technical Information 1000BASE-T AutonegotiationBandwidth Category 3 cableCategory 5e cables Category 6 cableClient EthernetIeee 802.1p Ieee 802.3adIP Address LayerSwitch NetworkPing ProtocolTraffic monitoring TrunkingGlossary Index Index Regulatory Notices