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3Com 9100 manual Forwarding Database FDB

Models: 9100

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Page 6

Spanning Switches with Port-Based VLANs 67

Tagged VLANs	69
Uses of Tagged VLANs			70
Assigning a VLAN Tag			70
Mixing Port-Based and Tagged VLANs 72
Protocol-Based VLANs		72
Predefined Protocol Filters				73
Defining Protocol Filters				74
Deleting a Protocol Filter				75
Precedence of Tagged Packets Over Protocol Filters 75
VLAN Names 75
Default VLAN	75
Configuring VLANs on the Switch				76
VLAN Configuration Examples				77
Displaying VLAN Settings		78
Deleting VLANs	79

5FORWARDING D ATABASE (FDB)

Overview of the FDB	81
FDB Contents 81
FDB Entry Types	81
How FDB Entries Get Added		82
Associating a QoS Profile with an FDB Entry 82
Configuring FDB Entries 83
FDB Configuration Examples		83
Displaying FDB Entries	84
Removing FDB Entries	85

6SPANNING T REE P ROTOCOL (STP)

Overview of the Spanning Tree Protocol 87

How STP Works	89
Initialization	89
Stabilization	90
Reconfiguration		90
Spanning Tree Domains		90
Defaults 91
STP Configurations	91

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3Com 9100 manual Forwarding Database FDB

Contents

SuperStack Switch User Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Installation and Setup Virtual Lans Vlans Forwarding Database FDB Quality of Service QOS Using the WEB Interface Technical Specifications Troubleshooting Page Ethernet concepts Ethernet switching and bridging concepts About this GuideConvention Description ConventionsIcon Description Screen displaysYear RelatedDocumentation ComplianceAbout this Guide Features Switch 9100 OverviewSwitch AboutSimple Network Management Protocol Snmp For information on load sharing, refer to Chapter Virtual LANs VLANsNetwork ConfigurationQuality of Service QoS ExampleSwitch 9100 used in a backbone configuration KeyFront panel has the following features ViewPorts Standard Media Type Mhz/Km Rating Maximum Distance Describes the LED behavior on the SwitchLEDs Color Indicates 1000BASE-SX Port Status LEDsSwitch 9100 Rear shows the Switch 9100 rear view Color Indicates 100/1000BASE-TX Port Status LEDsUnit Status LED Serial Number Power SocketsReset Button MAC AddressPublic Installation and Setup DeterminingLocation Installing TabletopRack Mounting Installing the Switch 9100 Connecting Equipment to the Console Port Function Pin Number DirectionSwitch Installation Flashes until the switch has successfully passed the PostLogging on for Default Vlan named defaultLogin admin First TimeInstallation and Setup Accessing the Switch Accessing the Switch You could enter the following shortcut Be a range of numbers, for exampleConfig snmp community readonly readwrite string Symbol DescriptionConfig vlan name ipaddress ipaddress Reboot date time cancelCreate account admin user username encrypted password Line-Editing KeysCommand Description Disable clipaging Disable bootp vlan name allDisable cli-config-logging Disable idletimeoutShow banner Configuring Management AccessUnconfig switch all 3C177052Changing the Default Password Account Name Access Level3C1770519# Create account admin user username encrypted Viewing AccountsShow accounts Profiles Methods Managing SwitchUsing Access Deleting an AccountConfig access-profile accessprofile Access Profile Example To view the contents of an access profile, typeConnecting to Another Host Using Telnet Using TelnetTo view the Telnet configuration, type Using a Bootp ServerManually Configuring the IP Settings For example Config vlan name ipaddress ipaddress subnetmaskConfig iproute add default ipaddress metric Your changes take effect immediatelyTerminate the session by using the following command Show sessionClear session sessionnumber On the switch CommandsUsing the Web IP HostAgents Using SnmpAccessing Switch Supported MIBsEnable Snmp access Enable Snmp trapsCommand Checking Basic Ping command syntax isOptions for the ping command are described in Table ConnectivityEnabling Switch 9100 PortsConfiguring Switch Port Speed Duplex Setting DisablingEnable sharing masterport Enable learning ports portlistEnable ports portlist Config ports portlist qosprofileDisable sharing masterport Disable learning ports portlistDisable ports portlist Show ports portlist txerrorsAccessing the Switch Enable sharing 4 grouping Verifying the Load ConfigurationPort-Mirroring SharingExample CommandsDisable mirroring Show mirroringAccessing the Switch VLANs help to control traffic VLANs provide extra securityIgmp Overview VLANs ease the change and movement of devicesIgmp Snooping Enable igmp vlan name Enable igmp snoopingForward-mcrouter-only Forward-mcrouter-only is specified, Types of VLANs Port-Based VLANsSpanning Switches with Port-Based VLANs Marketing Finance SalesSwitch AccountingEngineering Uses of Tagged VLANs Assigning a Vlan TagShows a logical diagram of the same network Tagged PortsMixing Port-Based and Tagged VLANs Predefined Protocol Filters Following protocol filters are predefined on the switchNetBIOS DECNet IPX8022 AppleTalkConfig protocol protocolname add protocoltype Hexvalue Defining Protocol FiltersCreate protocol protocolname Vlan Names Deleting a Protocol FilterPackets Over Protocol Configuring VLANs On the Switch6 to it Displaying Vlan Settings To display Vlan settings, use the following commandShow vlan name Deleting VLANs Virtual Lans Vlans Forwarding Database FDB Associating a QoS Profile with an FDB Entry Entries Config fdb agingtime numberDisable learning ports Following example adds a permanent entry to the FDBTo display FDB entries, use the command Displaying FDB EntriesShow fdb macaddress vlan name portlist Permanent Removing FDB Delete Fdbentry macaddress vlanName Clear fdb macaddress vlan name portlist Forwarding Database FDB Spanning Tree Spanning Tree Protocol STPOverview ProtocolNetwork with an illegal topology Initialization Traffic flowing through Bridge BReconfiguration DomainsStabilization STPD2 contains VLANs Manufacturing and Engineering Stpd Marketing & Sales Marketing, Sales & Engineering Enable stpd stpdname Configuring STP on the SwitchConfig stpd stpdname add vlan name Create stpd stpdnameShows the commands used to configure STP Enable stpd port portlistSettings Displaying STPThrough 3, and port Resetting STP Listed in TableSpanning Tree Protocol STP Quality of Service QOS Quality of ServiceBuilding Blocks QoS Profiles Profile Name Priority Minimum Bandwidth Maximum Bandwidth Vlan Permanent MAC addresses Dynamic MAC AddressesOr the command Command to clear the FDB is as followsVerifying MAC-Based QoS Settings Blackhole802.1p Packets Config dot1p type dot1pvalue qosprofile qosnameEnable dot1p replacement ports portlist all Physical and Logical GroupingsSource Port Verifying Physical and Logical GroupingsVerifying Configuration Performance Displaying QoS Information QoS MonitorShow ports portlist qosmonitor Enable qosmonitor port port Disable qosmonitorConfiguring QoS Quality of Service QOS Status Monitoring Statistics Show log priority Show log configShow switch Show memoryTo view port statistics, use the following command Port StatisticsAccuracy Port Errors To view port transmit errors, use the following commandTo view port receive errors, use the following command Port Monitoring Display KeysLogging Level Description Is specific to the problemWhere the following is true Clear log staticTo configure the log display, use the following command Configure remote logging by using the following commandReal-Time Display Disable log display Disable syslogAllows you to monitor LANs remotely Rmon features supported by the switchOn the network Clear CountersAlarms StatisticsHistory Allowing Proactive Management EventsImproving Efficiency Reducing the Traffic LoadHistory Rmon Group Support Supplied by the Switch StatisticsAlarms EventsEnable disable rmon Action High ThresholdStatus Monitoring and Statistics Using the WEB Interface Enabling Disabling Web AccessTo re-enable Web access, use the following command Setting Up Your Accessing the WebBrowser Navigating the Web Interface Task FrameWebserver busy Browser Controls Status MessagesSelection Type Key Sequence Configuring a Vlan Saving ChangesDo a Get When Using the WEB Interface Downloading a Software Upgrade and Boot OptionsSecondary image and configuration file on the switch New ImageRebooting the Switch SavingChanges Upgrading Software Upgrade and Boot Options Cancel option Boot OptionShow configuration Save configuration primarySoftware Upgrade and Boot Options Safety Information Important Safety InformationLithium Battery Appendix a Safety Information ’information de Sécurité ImportanteAppendix a Safety Information Batterie au lithium Wichtige Sicherheitsinformat ionen EuropeWarnung Faseroptikanschlüsse Optische Sicherheit LithiumbatterieAppendix a Safety Information Technical Specifications Protocols Used for Administration Terminal EmulationTroubleshooting LEDsSnmp Network Manager cannot access the device Using Command-Line InterfaceSwitch does not power up Telnet workstation cannot access the deviceTraps are not received by the Snmp Network Manager Permanent entries remain in the FDBYou forget your password and cannot log Port Configuration No link light on 100/1000BASE-TX portExcessive RX CRC errors No link light on Gigabit fiber port VLANs You cannot add a port to a VlanVLANs, IP Addresses and default routes Vlan names802.1Q links do not work correctly Using the Command-Line Interface Appendix C Troubleshooting Services Technical SupportOnline Technical Hours a day, 7 days a week Access by Analog ModemUsername anonymous Country Data Rate Telephone NumberAccess by Digital Modem 847 262408 727 Europe, South Africa, and Middle East Country Telephone Number Asia, Pacific RimCountry Telephone Number Fax Number Page Glossary Broadcast storm BridgeBroadcast CollisionGlossary Line speed IP addressLatency LoopPort trunks See load sharing Router RepeaterResilient link SegmentStandby port SwitchSwitch Database TelnetGlossary Admin IndexNumbers FDB Rmon Tftp Index Index Index of Commands 118 Index of Commands Index of Commands 3Com Corporation Limited Warranty Warranties Exclusive Governing LAW EMC Statements