D-Link DES-1228 user manual Configuration 802.1D Spanning Tree, Configuration Spanning Tree

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Configuration > 802.1D Spanning Tree

802.1D Spanning Tree Protocol (STP) implementation is a backup link(s) between switches, bridges or routers designed to prevent network loops that could cause a broadcast storm. When physical links forming a loop provide redundancy, only a single path will be forwarding frames. If the link fails, STP activates a redundant link automatically.

Figure 346 – Configuration > Spanning Tree

By default, Spanning Tree is Disabled. If Enabled, the Switch will listen for BPDU packets and its accompanying Hello packet. BPDU packets are sent even if a BPDU packet was not received. Therefore, each link between bridges is sensitive to the status of the link. Ultimately this difference results in faster detection of failed links, and thus faster topology adjustment. A draw-back of 802.1D is this absence of immediate feedback from adjacent bridges.

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Contents DES-1228 Table of Contents Page Iii Page Purpose Terms/UsageGigabit Ethernet Technology IntroductionSwitching Technology Fast Ethernet TechnologyFeatures IEEE802.1X Port-based Access ControlForwarding Mode Technical SpecificationsKey Components / Performance Switching Capacity Max. Forwarding RatePort Functions Sdram for CPUFlash Memory Front panel1000Mbps Copper Chassis DimensionsReset button on Ports in the frontEmission EMI and Safety Certifications Temperature Storage TemperaturePower consumption AC inputInstallation UnpackingRack Mounting Attach the adhesive rubber pads to the bottomConnecting Network Cable Attach the mounting brackets to the SwitchAC Power Front Panel Reset buttonLED Indicator 10/100 BASE-TX Twisted Pair Ports Port 1~2410/100/1000 BASE-T Twisted Pair Ports Port 27~28 AC Power ConnectorRear Panel Power LEDs Understanding LED IndicatorsPower and System LEDs Ports 1 ~ 24 Status LEDs Link/Act 100Mbps1000Mbps Ports 27~28 10/100/1000 Base-T LEDs Link/ActWhen the 1000Mbps LED light is on, the respective port Installing the SmartConsole Utility Supported web browsersSmartConsole Utility Features Menu ToolbarOption includes Refresh Time and Group Interval functions Definitions of the Discovery List features Discovery ListMonitor List Definitions of the Monitor List functions and termsView trap Device Setting This space has been intentionally reserved for notesFirmware Upgrade Login Web-based ManagementLog in screen Tool Menu Tool MenuSetup Menu Tool Menu Firmware Backup and UploadSystem System Setting C PSystem Trap Setting System System SettingSystem Port Setting System Trap SettingSystem Port Setting System Snmp Setting System Snmp Setting System Password Access Control Configuration 802.1Q VlanConfiguration 802.1Q Vlan Default Setting Configuration 802.1Q Vlan Add VID Configuration Trunking Configuration Igmp SnoopingConfiguration Igmp Snooping Configuration Page Page Configuration Igmp Router port Settings Configuration 802.1D Spanning Tree Configuration Spanning TreePage Configuration Port Mirroring Configuration Port MirroringQoS 802.1p Default Priority QoS 802.1p Default PrioritySecurity Broadcast Storm Control Security Safeguard EngineSecurity 802.1X Setting Security 802.1X Setting Page Security Mac Address Table Static Mac Security Static Mac AddressSecurity Mac Address Table Dynamic Forwarding Table Security Dynamic Forwarding TableMonitoring Statistics Monitoring StatisticsMonitoring Port Statistics