Spanning Tree Protocol STP | 3Com 9100 specs

98CHAPTER 6: SPANNING TREE PROTOCOL (STP)

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3Com 9100 manual Spanning Tree Protocol STP

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 Guide Convention Description ConventionsIcon Description Screen displays Year RelatedDocumentation Compliance About this Guide Features Switch 9100 OverviewSwitch About Simple Network Management Protocol Snmp For information on load sharing, refer to Chapter Virtual LANs VLANs Network ConfigurationQuality of Service QoS Example Switch 9100 used in a backbone configuration Key Ports Front panel has the following featuresView Standard Media Type Mhz/Km Rating Maximum Distance Describes the LED behavior on the SwitchLEDs Color Indicates 1000BASE-SX Port Status LEDs Unit Status LED Switch 9100 Rear shows the Switch 9100 rear viewColor Indicates 100/1000BASE-TX Port Status LEDs Serial Number Power SocketsReset Button MAC Address Public Location Installation and SetupDetermining Rack Mounting InstallingTabletop Installing the Switch 9100 Connecting Equipment to the Console Port Function Pin Number Direction Switch Installation Flashes until the switch has successfully passed the Post Logging on for Default Vlan named defaultLogin admin First Time Installation and Setup Accessing the Switch Accessing the Switch You could enter the following shortcut Be a range of numbers, for example Config snmp community readonly readwrite string Symbol DescriptionConfig vlan name ipaddress ipaddress Reboot date time cancel Create account admin user username encrypted password Line-Editing Keys Command Description Disable clipaging Disable bootp vlan name allDisable cli-config-logging Disable idletimeout Show banner Configuring Management AccessUnconfig switch all 3C177052 3C1770519# Changing the Default PasswordAccount Name Access Level Show accounts Create account admin user username encryptedViewing Accounts Profiles Methods Managing SwitchUsing Access Deleting an Account Config access-profile accessprofile Access Profile Example To view the contents of an access profile, type Connecting to Another Host Using Telnet Using TelnetTo view the Telnet configuration, type Using a Bootp Server Manually Configuring the IP Settings For example Config vlan name ipaddress ipaddress subnetmaskConfig iproute add default ipaddress metric Your changes take effect immediately Clear session sessionnumber Terminate the session by using the following commandShow session On the switch CommandsUsing the Web IP Host Agents Using SnmpAccessing Switch Supported MIBs Enable Snmp access Enable Snmp traps Command Checking Basic Ping command syntax isOptions for the ping command are described in Table Connectivity Enabling Switch 9100 PortsConfiguring Switch Port Speed Duplex Setting Disabling Enable sharing masterport Enable learning ports portlistEnable ports portlist Config ports portlist qosprofile Disable sharing masterport Disable learning ports portlistDisable ports portlist Show ports portlist txerrors Accessing the Switch Enable sharing 4 grouping Verifying the Load ConfigurationPort-Mirroring Sharing Example CommandsDisable mirroring Show mirroring Accessing the Switch VLANs help to control traffic VLANs provide extra security Igmp Snooping Igmp OverviewVLANs ease the change and movement of devices Forward-mcrouter-only Forward-mcrouter-only is specified, Enable igmp vlan nameEnable igmp snooping Types of VLANs Port-Based VLANs Spanning Switches with Port-Based VLANs Marketing Finance Sales Switch AccountingEngineering Uses of Tagged VLANs Assigning a Vlan Tag Shows a logical diagram of the same network Tagged Ports Mixing Port-Based and Tagged VLANs Predefined Protocol Filters Following protocol filters are predefined on the switchNetBIOS DECNet IPX8022 AppleTalk Create protocol protocolname Config protocol protocolname add protocoltype HexvalueDefining Protocol Filters Packets Over Protocol Vlan NamesDeleting a Protocol Filter Configuring VLANs On the Switch 6 to it Show vlan name Displaying Vlan SettingsTo display Vlan settings, use the following command 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 FDB Show fdb macaddress vlan name portlist Permanent To display FDB entries, use the commandDisplaying FDB Entries Name Clear fdb macaddress vlan name portlist Removing FDBDelete Fdbentry macaddress vlan Forwarding Database FDB Spanning Tree Spanning Tree Protocol STPOverview Protocol Network with an illegal topology Initialization Traffic flowing through Bridge B Stabilization ReconfigurationDomains 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 stpdname Shows the commands used to configure STP Enable stpd port portlist Through 3, and port SettingsDisplaying STP Resetting STP Listed in Table Spanning Tree Protocol STP Building Blocks Quality of Service QOSQuality of Service QoS Profiles Profile Name Priority Minimum Bandwidth Maximum Bandwidth Vlan Permanent MAC addresses Dynamic MAC Addresses Or the command Command to clear the FDB is as followsVerifying MAC-Based QoS Settings Blackhole 802.1p Packets Config dot1p type dot1pvalue qosprofile qosnameEnable dot1p replacement ports portlist all Physical and Logical Groupings Source Port Verifying Physical and Logical Groupings Show ports portlist qosmonitor Verifying Configuration PerformanceDisplaying QoS Information QoS Monitor Enable qosmonitor port port Disable qosmonitor Configuring QoS Quality of Service QOS Status Monitoring Statistics Show log priority Show log configShow switch Show memory Accuracy To view port statistics, use the following commandPort Statistics To view port receive errors, use the following command Port ErrorsTo view port transmit errors, use the following command Logging Port MonitoringDisplay Keys Level Description Is specific to the problemWhere the following is true Clear log static Real-Time Display To configure the log display, use the following commandConfigure remote logging by using the following command Disable log display Disable syslog Allows you to monitor LANs remotely Rmon features supported by the switchOn the network Clear Counters History AlarmsStatistics Allowing Proactive Management EventsImproving Efficiency Reducing the Traffic Load History Rmon Group Support Supplied by the Switch StatisticsAlarms Events Enable disable rmon Action High Threshold Status Monitoring and Statistics To re-enable Web access, use the following command Using the WEB InterfaceEnabling Disabling Web Access Browser Setting Up YourAccessing the Web Webserver busy Navigating the Web InterfaceTask Frame Selection Type Key Sequence Browser ControlsStatus Messages Do a Get When Configuring a VlanSaving Changes Using the WEB Interface Downloading a Software Upgrade and Boot OptionsSecondary image and configuration file on the switch New Image Changes Rebooting the SwitchSaving Upgrading Software Upgrade and Boot Options Cancel option Boot OptionShow configuration Save configuration primary Software Upgrade and Boot Options Safety Information Important Safety Information Lithium Battery Appendix a Safety Information ’information de Sécurité Importante Appendix a Safety Information Batterie au lithium Wichtige Sicherheitsinformat ionen Europe Warnung Faseroptikanschlüsse Optische Sicherheit Lithiumbatterie Appendix a Safety Information Technical Specifications Protocols Used for Administration Terminal Emulation Troubleshooting LEDs Snmp Network Manager cannot access the device Using Command-Line InterfaceSwitch does not power up Telnet workstation cannot access the device Traps are not received by the Snmp Network Manager Permanent entries remain in the FDB Excessive RX CRC errors You forget your password and cannot logPort Configuration No link light on 100/1000BASE-TX port No link light on Gigabit fiber port VLANs You cannot add a port to a Vlan 802.1Q links do not work correctly VLANs, IP Addresses and default routesVlan names Using the Command-Line Interface Appendix C Troubleshooting Online Technical ServicesTechnical Support Hours a day, 7 days a week Access by Analog ModemUsername anonymous Country Data Rate Telephone Number 408 727 Access by Digital Modem847 262 Europe, South Africa, and Middle East Country Telephone Number Asia, Pacific Rim Country Telephone Number Fax Number Page Glossary Broadcast storm BridgeBroadcast Collision Glossary Line speed IP addressLatency Loop Port trunks See load sharing Router RepeaterResilient link Segment Standby port SwitchSwitch Database Telnet Glossary Numbers AdminIndex 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