D-Link DES-3216 manual Spanning Tree Configuration, STA Operation Levels, Spanning Tree Algorithm

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10/100 Auto Negotiation Switch 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-3216 allows you to create alternative paths (using multiple switches or bridges) in your network. These backup paths are idle until the DES-3216 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.

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-3216 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 24, allows you to enable or disable STA, set bridge priority and other configurations.

Figure 24: Spanning Tree Configuration menu

Spanning Tree Algorithm

Spanning Tree Algorithm can be enabled or disabled. Use Spanning Tree to prevent network loops.

Managing the DES-3216

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Contents DES-3216 10/100 Auto Negotiation Switch User’s Guide Link Limited Warranty Hardware North, Central, and South America FCC Warning Wichtige Sicherheitshinweise Table of Contents Page Page Organization About This GuideAudience Introduction FeaturesRear Panel Front PanelTelnet Management Management MethodsUpdating Firmware Local Console ManagementDesktop/ Shelf Installation Installing the DES-3216Installation Options Rack Installation Power OnCable Specifications Connecting the DES-3216 to the NetworkCable Diagram MDI-X Port Connecting the DES-3216 to the DES-5024 and HubsPorts DES-3216 to DES-3216 ConnectionLEDs LQNDES-3216 LED Panel Power LEDLED Local Console Management Managing the DES-3216∙ Data bits ∙ Parity None ∙ Stop bits ∙ Flow Control None TelnetLog ∙ Default User Name D-Link ∙ Default Password D-LinkHelp Message Help MessageSpacebar Panel ConventionsConsole Program System ConfigurationSwitch Port 1-8, 9-16 Configuration Spanning Tree ConfigurationTrunking Port Management Snmp Management ConfigurationVlan Port Management System Information System Configuration MenuSystem Reset Factory Reset to Default Config ValuesHardware Revision Software UpdateBoot Prom Firmware Version System Information MenuSystem Description LAN Default GatewaySoftware Version MAC AddressSystem Reset System ResetFactory Reset Factory ResetFactory Reset Confirmation Disadvantages of Store and Forward System Rate ControlAdvantages of Store and Forward Disadvantages of Cut-Through Advantages of Cut-ThroughSoftware Update Software Update MenuSoftware Update Transfer File Transfer through Xmodem Create New User User Account ManagementUser Account Change Menu User Name PasswordConfirm Password Access LevelDelete Delete UsersStatus Change Password Change PasswordNew Password Old PasswordSwitch Port Configuration Physical Switch Port Configuration MenuState Priority Port StateSpanning Tree Algorithm Spanning Tree ConfigurationSpanning Tree Configuration Menu STA Operation LevelsHello Time Forward Delay TimeBridge Priority Root CostUser Selective STA parameters Root PortSnmp Management Configuration Menu Snmp Management ConfigurationSnmp Community String Snmp Manager SettingAccess Right Link Change Event Snmp Trap Manager SettingAuthentication Failure Cold StartPage Vlan Port Management Menu Vlan Port ManagementVlan Port Management menu TrunkGroup Create New VlanNew Vlan Name Port #Vlan Name Delete Vlan MenuVirtual LAN Name Modify Vlan MenuTrunking Port Management menu Trunking Port Management MenuName Create New Trunking PortNew Trunking Group Name Trunking Port Delete Trunking PortTrunking Port Name Modify Trunking PortProblem Solution TroubleshootingPage Port Specifications Appendix a DES-3216 Technical SpecificationsSwitch Specifications 10/100 Auto Negotiation Switch Users’ Guide General EMI 10/100 Auto Negotiation Switch Users’ Guide Performance Index Access LevelUser Name 32, 33