D-Link DES-3224 manual Spanning Tree Configuration, STA Operation Levels

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10/100 Auto Negotiation Switch User’s Guide

2.Enter a new value between zero and 255.

3.Select Save and press Enter.

Spanning Tree Configuration

The Spanning Tree Configuration panel is used to configure the Spanning Tree Algorithm. The Spanning Tree Algorithm (STA) in the DES-3224 allows you to create alternative paths (using multiple switches or bridges) in your network. These backup paths are idle until the DES-3224 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-3224 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

Managing the DES-3224

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Contents DES-3224 10/100 Auto Negotiation Switch User’s Guide Link Limited Warranty Hardware North, Central, and South America FCC Warning Wichtige Sicherheitshinweise Page Table of Contents Page Page Page Organization About This GuideAudience Front Panel FeaturesIntroduction Side Panels MDI-Uplink port MDI-X portsLocal Console Management Rear PanelManagement Methods Telnet ManagementUpdating Firmware Unpacking the DES-3224 Installing the DES-3224Installation Options Rack Installation Power OnDesktop/ Shelf Installation Connecting the DES-3224 to the Network Cable SpecificationsCable Diagram Cable Requirements MDI-X Port PortsMDI-II Port RS-232 PortConnecting the DES-3224 to the DES-5024 and Hubs DES-3224 to DES-3224 ConnectionPower LED LEDsFull/ Half LED DES-3224 LED PanelSpeed/ Link/ Activity LED Utilization LEDs Managing the DES-3224 Local Console ManagementTelnet ∙ Parity None ∙ Stop bits ∙ Flow Control None∙ Default User Name D-Link ∙ Default Password D-Link LogHelp Message Help MessageSpacebar Spanning Tree Configuration System ConfigurationSwitch Port 1-8, 9-16, 17-24 Configuration Console ProgramVlan Port Management System Configuration MenuSnmp Management Configuration Trunking Port ManagementSoftware Update System ResetFactory Reset to Default Config Values System InformationHardware Revision Boot Prom Firmware VersionSystem Information Menu Software VersionSystem Name LAN Default GatewaySystem Description System LocationSystem Reset System ResetFactory Reset Factory ResetFactory Reset Confirmation Disadvantages of Store and Forward System Rate ControlAdvantages of Store and Forward Advantages of Cut-Through Disadvantages of Cut-ThroughSoftware Update Menu Software UpdateSoftware Update Transfer Message Displayed as Eeprom is Being Written Create New User User Account ManagementUser Account Change Menu Access Level PasswordConfirm Password User NameDelete Users StatusDelete New Password Change PasswordOld Password State Switch Port ConfigurationSwitch Port Configuration Menu Priority PhysicalPort State STA Operation Levels Spanning Tree ConfigurationSpanning Tree Configuration Menu Bridge Priority Forward Delay TimeSpanning Tree Algorithm Root CostRoot Bridge Root PortSnmp Management Configuration Snmp Management Configuration MenuSnmp Community String Snmp Manager SettingAccess Right Cold Start Snmp Trap Manager SettingAuthentication Failure Link Change EventPage Vlan Port Management Vlan Port Management MenuVlan Port Management menu Port # Create/ View VlanNew Vlan Name TrunkGroupDelete Vlan Menu Vlan NameModify Vlan Menu Virtual LAN NameVlan Modify menu Trunking Port Management Menu Trunking Port Management menuName Create New Trunking PortNew Trunking Group Name Delete Trunking Port Trunking PortModify Trunking Port Trunking Port NameTrunking Port Modify menu Troubleshooting Problem SolutionPower LED is Off System Error LED Indicators Port Specifications DES-3224 Technical SpecificationsSwitch Specifications General EMI Access Level IndexUser Name 34, 35