3Com 2250-SFP, 2226-SFP, 2426-PWR manual Broadcast Storm Summary Screen

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Broadcast Storm

A broadcast storm occurs when an incorrect packet is sent out on a network, causing most hosts to respond all at once and typically with wrong answers that start the process over again. Broadcast storms use substantial network bandwidth and may cause network time-outs.

Two tabs are available on the Broadcast Storm page:

■Summary

■Modify

Configuring VLANs

55

Summary

Use the Summary tab to display the broadcast mode and rate for all the ports.

Figure 44 Broadcast Storm Summary Screen

Image 55

Contents Installation and User Guide 3Com Corporation 350 Campus Drive Marlborough MA Contents Snmp 3COM CLI Reference Guide Page Conventions About this GuideProduct Registration Documentation CommentsAutonegotiating 10/100 Mbps Ports Overview of the Baseline SwitchFeatures and Capabilities Autosensing of MDI/MDIX ConnectionsPower-over-Ethernet Capability Physical FeaturesGigabit Combo Ports RJ-45/SFP RJ-45 10/100 Ports Front PanelGigabit Combo Ports RJ-45/SFP 10/100BASE-TX Link/Activity Status LEDs SFP Mode Rear Panel Power LEDPackage Contents Important Safety Information Installing the SwitchImportante Avviso di Sicurezza Positioning the SwitchRack-Mounting or Free-Standing Using the Mounting KitMontagesatz Anweisungen Supplying Power to the SwitchPlacing Units On Top of Each Other Status Meaning Checking for Correct OperationApproved SFP Transceivers Using SFP TranceiversInserting an SFP Transceiver Removing an SFP Transceiver Performing Spot ChecksRefer to Troubleshooting on Using the Console Command Line Interface CLI Requirements for Accessing the Web InterfaceCLI Summary with Default IP Address CLI Summary with Assigned IP Address Logging On to the Web InterfaceMenu Navigating the Web InterfaceMenu Item Description Snmp Port Status Buttons3Com Switch Detect Welcome Screen Running the 3Com Switch Detect Application3Com Switch Detect Search Screen Connecting to the WEB Interface Device Summary Information Configuration OverviewPolling Interval Device ViewColor Key Administration SettingsModifying the IP Address Settings Automatic IP ConfigurationBackup Configuration IP SetupFirmware Upgrade Restore ConfigurationInitialize, keep IP setting ResetSystem Access RebootCreate User User SummaryRemove User Modify UserSystem Name SetupSystem Time Snmp Add Configuring VLANsSnmp Remove Vlan Modify Vlan Setup ScreenRename Modify PortPort Detail RemoveForwarding Tagged/Untagged Frames Sample Vlan ConfigurationsVlan Detail Setting Up Vlan Across Two Switches Setting Up Two VLANs on the Same SwitchSpanning Tree Tagged Vlan ConfigurationSpanning Tree Summary Screen SummarySpanning Tree Setup Screen Port SetupIgmp Snooping & Query Spanning Tree Port Setup ScreenBroadcast Storm Summary Screen Broadcast StormModify QoS VoIP Traffic SettingsQoS VoIP Setup Screen OUI Add OUI SummaryQoS OUI Modify Screen PoE 3CBLSF26-PWR onlyAdministration Configuring Port SettingsDetail Port Administration Summary ScreenSpeed/Duplex for 1000 Mbps Connections Port Administration Setup ScreenGuidelines for Creating Trunks Link AggregationLink Aggregation Summary Screen CreateUse the Remove tab to delete a link aggregation group Statistics SecurityRadius Client Configure 802.1X Settings802.1X Summary Screen Address Table MonitoringPort Summary Port MirroringUse the Setup tab to create a port mirror session Cable Diagnostic Summary Screen Cable DiagnosticsCable Diagnostic Screen DiagnosticsConfiguring the Switch from the WEB Interface Resetting to Factory Defaults TroubleshootingForgotten Static IP Address Solving LED IssuesFiber cable is connected, but the Module Active LED is off Link/Activity LED is on, but network performance is poor If the Problem PersistsAll ports appear to show continual activity Troubleshooting Troubleshoot Online Access Software Downloads Purchase Value-Added ServicesRegister Your Product Contact Us Telephone Technical Support and RepairCountry Telephone Number Latsupportanc@3com.com Electrical 3CBLSF26 Related StandardsEnvironmental Physical3CBLSF26PWR Related Standards Electrical 3CBLSF50 Related StandardsEnvironmental PhysicalAppendix B Technical Information Console Cable PIN-OUTSPC-AT Serial Cable Null Modem CableModem Cable Pin Number 10/100 1000 Ethernet Port RJ-45 Pin AssignmentsAppendix C PIN-OUTS Console Port Getting Started with the Command Line InterfaceLogging on to the CLI Automatic Logout CLI CommandsConcurrent CLI Sessions Syntax Default Configuration Parameters Ping255.255.255.0 IpSetupUpgrade Initialize Following example resets the Switch to factory defaultsLogout PasswordRegulatory Notices 100 Auto-negotiation 1000BASE-TBandwidth Category 6 Cables Category 3 CablesCategory 5 Cables Category 5e CablesIeee 802.1Q Full DuplexHalf Duplex Ieee 802.1DMAC Address Power over EthernetLayer Link AggregationSubnet Mask SwitchServer Subnet AddressVlan Numbers IndexIndex