D-Link DES-5016 manual Spanning Tree Configuration, STA Operation Levels

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Fast Ethernet Switching System User’s Guide

Spanning Tree Configuration

The Spanning Tree Configuration panel is used to configure the Spanning Tree Algorithm. The Spanning Tree Algorithm (STA) in the DES-5016 allows you to create alternative paths (using multiple switches or bridges) in your network. These backup paths are idle until the DES-5016 determines that a problem has developed in the primary path. If the primary path breaks down STA will activate the backup path. STA is very complicated and you should understand it well before changing the default settings. See Table 8: User Selective STA Parameters.

STA Operation Levels

STA operates on the bridge level and the port level. On the bridge level, STA calculates the Bridge Identifier for each DES-5016, then sets the Root Bridge and the Designated Bridges. On the port level, STA sets the Root Port and Designated Ports.

Spanning Tree Configuration Menu

The Spanning Tree Configuration menu, displayed in Figure 37, allows you to enable or disable STA, set bridge priority and other configurations.

Figure 37: Spanning Tree Configuration

Managing the DES-5016

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Contents DES-5016 Fast Ethernet Switching System User’s Guide Software Link Limited Warranty HardwareLink Offices for Registration and Warranty Service North, Central, and South AmericaEurope and Israel Copyright Statement Wichtige Sicherheitshinweise Table of Contents Page Page About This Guide AudienceOrganization Introduction FeaturesPage DES-5016TX Front PanelDES-5016TF DES-5016TFDES-5016 Rear Panel Rear PanelUpdating Firmware Management MethodsLocal Console Management Telnet ManagementUnpacking the DES-5016 Installing the DES-5016Installation Options Install Feet on Bottom Desktop/ Shelf InstallationAttach Feet Attach Mounting Brackets Rack InstallationInsert into Rack Installing Optional Modules Remove Blank Bracket Insert Optional Module Power On Connecting the DES-5016 to the Network Cable SpecificationsCopper Cable Cable Diagram Fiber Optic Cable MDI-X Ports PortsFiber Optic Ports RS-232 PortDES-5016 to DES-5016 Connection Connecting the DES-5016 to other Switches and HubsDES-5016TF LEDs LEDsDiagnostic PowerCPU Module StatusLED Link Port TX ModuleAct 100/10Port TX Module LEDs Link/ Act Port FX ModuleCol Port 100BASE-FX ModuleLit Dark Gigabit Module LED Port 1000BASE-SX ModuleManaging the DES-5016 ∙ Data bits ∙ Parity None ∙ Stop bits ∙ Flow Control None Local Console ManagementTelnet Log ∙ Default User Name D-Link ∙ Default Password D-LinkHelp Message Help MessageSpacebar Panel ConventionsSwitch Port 1-8, 9-16 and Optional Module Configuration System Configuration100BASE-FX/ 1000BASE-SX Switch Port Module Console ProgramSnmp Management Configuration Spanning Tree ConfigurationVlan Port Management Trunking Port ManagementSystem Reset System Configuration MenuFactory Reset to Default Config Values System InformationBoot Prom Firmware Version Software UpdateSystem Information Menu Hardware RevisionMAC Address LAN Default GatewaySystem Description System NameSystem Reset System ResetFactory Reset Factory ResetFactory Reset Confirmation System Rate Control Advantages of Store and ForwardDisadvantages of Store and Forward Disadvantages of Cut-Through Advantages of Cut-ThroughSoftware Update menu Software Update MenuTransfer Firmware Xmodem User Account Change Menu User Account ManagementConfirm Password PasswordAccess Level Create New UserPage Delete Users StatusDelete Page Change Password Old PasswordNew Password Page Switch Port Configuration Switch Port Configuration Menu StatePhysical Port State PriorityFlow Control Spanning Tree Configuration Spanning Tree Configuration MenuSTA Operation Levels Spanning Tree Algorithm Forward Delay TimeBridge Priority Root CostRoot Port Root BridgeSnmp Management Configuration Snmp Manager Setting Snmp Management Configuration MenuAccess Right Snmp Community StringAuthentication Failure Snmp Trap Manager SettingCold Start Link Change EventPage Vlan Port Management Vlan Port Management menu Vlan Port Management MenuNew Vlan Name Create New VlanPort # TrunkGroupPage Vlan Name Delete Vlan MenuVirtual LAN Name Modify Vlan MenuTrunking Port Management menu Trunking Port Management MenuCreate New Trunking Port New Trunking Group NameName Page Delete Trunking Port Trunking PortModify Trunking Port Modify Trunking Port Trunking Port NameProblem Solution Post Errors TroubleshootingCables Port StatesPage Diagnostic LED Appendix a DES-5016 Technical Specifications Switch SpecificationsPort Specifications Page Fast Ethernet Switching System User’s Guide General EMI Fast Ethernet Switching System User’s Guide Performance Act IndexUser Name 52, 54