D-Link DES-2212 manual Spanning Tree Protocol and Configuration

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5.Set the Status of the entry to Permanent in order to enter and save the settings in the memory of the switch.

6.Choose SAVE to add the entry to the forwarding table.

Spanning Tree Protocol and Configuration

The DES-2212 implements the IEEE 803.1d Spanning Tree Protocol (STP) to provide the following functions:

Network loop detection and prevention. There should only be one path between any two stations on the network. If there is more than one path, packets will be forwarded in loops forever. The spanning tree protocol detects any looping paths, and selects the path with the lowest path cost as the active path, while blocking other paths and using them as backups.

Automatic topology reconfiguration. If a path for which there is a backup path fails, the backup path will be automatically activated, and the spanning tree protocol will automatically reconfigure the network topology.

STP parameters are mainly used to determine the root bridge and root ports on the network. If there is a loop in the network, data packets will go through the root bridge. If the bridge has several ports, then the root port will be used to pass data packets to the root bridge.

STP settings are complex, so you probably want to leave these default parameter values as they are. If you really need to modify their values, please refer to the following discussion.

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Using the Console Interface

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Contents Recyclable Wichtige Sicherheitshinweise Warranties Exclusive Limited Warranty Software Trademarks Table of Contents Making Network Connections Product Specifications Page About this Guide Page DES-2212 Ethernet/Fast Ethernet Switch IntroductionPorts Switching ManagementCables and Connectors 100Mbps Fast Ethernet Introduction100BASE-TX Technology Overview Topology NetworkHubs Connectivity RulesEthernet Switching Introduction External Features Front PanelExternal Features LED Indicators Rear Panel External Features Page Installation Unpacking the SwitchInstalling the Switch LocationRack Mounting Connecting Power Replacing the Fuse Making Network Connections 10BASE-T Connection100BASE-T Connection MII Connection Making Network Connections Using the Console Interface Connecting to the SwitchConsole Usage Conventions First Time Connecting To The Switch Super and General User Privileges Steps to create a Super User or General UserMain Menu for General User Super User and General User Privileges Login On The Switch Console By Registered Users Changing your Password Choose Change PasswordAdding and Deleting Users Adding a New UserDeleting a User Setting up the Switch TCP/IP SettingsUsing the Console Interface Out-of-band management and console settings 10. TCP/IP Parameters Configuration MenuSoftware Updates 11. Out-of-Band/Console Setting MenuSnmp Information and Console Timeout 12. Software Update Menu13. System Configuration Menu 14. Snmp Trap Manager Configuration Menu Snmp TrapsSwitch Configuration Snmp Security Community Names16. Port Configuration Menu Controlling Individual PortsForwarding Configuration 17. STA, Forwarding TableUsing the Console Interface Spanning Tree Protocol and Configuration Introduction to Spanning Tree Protocol Parameters Using the Console Interface Setting Spanning Tree Protocol Parameters Using the Console Interface Using the Console Interface Using the Console Interface Monitoring the Switch Displaying Port StatisticsUsing the Console Interface Resetting the Switch System ResetFactory Reset Using the Console Interface Page Product Specifications GeneralEnvironmental and Physical Cables Connectors 10BASE-T/100BASE-TX ConnectorsStraight-through Cable MII Connector Crossover CableMII Connector Pin Assignment RS-232 DB9 Pin Specification E , D BE , D B -2 R 2 Page Boot Configuration File Sysdescr stringSyslocation string Clear-SNMP-comm-table Index IndexSnmp Page Offices Page Registration Card