Configuring Rapid Spanning Tree, 122 | Dell 28XX specification

Modifying the LAG STP Parameters

1Open the STP LAG Settings page.

2Select a LAG from the Select a LAG drop-down menu.

3Modify the fields as desired.

4Click Apply Changes.

The STP LAG parameters are modified, and the device is updated.

Configuring Rapid Spanning Tree

While Classic Spanning Tree guarantees preventing L2 forwarding loops in a general network topology, convergence can take up to 30-60 seconds. The convergence time is considered too long for many applications. When network topology allows, faster convergence may be possible. The Rapid Spanning Tree Protocol (RSTP) detects and uses of network topologies that provide faster convergence of the spanning tree, without creating forwarding loops.

RSTP has the following port states:

•Disabled

•Learning

•Discarding

•Forwarding

Rapid Spanning Tree is enabled on the STP Global Settings page. To open the Rapid Spanning Tree (RSTP) page, click Switch→ Spanning Tree→ Rapid Spanning Tree in the tree view.

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Dell PowerConnect 28xx Systems User Guide

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Dell 28XX manual Configuring Rapid Spanning Tree, Modifying the LAG STP Parameters, Open the STP LAG Settings, 122

Contents

User Guide March 4 Contents Installing the PowerConnect Device Using Dell OpenManage Switch Administrator Manually Allocating IP Addresses Static Hosts 144 169 PowerConnect System Description PowerConnect 2816 Front Panel General Features FeaturesSummary of PowerConnect Models Jumbo Frames Support Virtual Cable Testing VCTAuto Negotiation AutoMDI/MDIX Support MAC Address Supported Features Layer 2 Features Vlan Supported Features Spanning Tree Protocol Features Class of Service CoS Features Ethernet Switch Management Features Switch Port Configurations PowerConnect 28xx Front and Back Panel Port Description PowerConnect 2808 Back Panel PowerConnect 2824 Front Panel PowerConnect 2824 Back Panel Physical Dimensions LED Definitions Fan LED 2824/2848 only Power LEDManaged Mode LED Port LEDs SFP Port LED Managed Mode ButtonSwitch Ventilation Fan RJ-45 Connections for 10/100/1000BASE-T Ports Cables, Port Connections, and Pinout Information1000BASE-T Cable Requirements SFP Ports SFP Pin Connections Pin No Use Power Connectors Internal Power Supply Connector Installing the PowerConnect Device Installation Precautions Unpacking Package ContentsSite Requirements Unpacking the Device Overview Device Rack InstallationMounting the Device Installing on a Flat Surface Bracket Installation for Rack Mounting Installing on a Wall Bracket Installation for Wall Mounting Mounting Device on a Wall Connecting the Terminal to the Device Connecting the DeviceConnecting the Device to the Network Connecting a Device to a Power Supply Port Connections, Cables, and Pinout Information RJ-45 Connections for 10/100/1000BaseT Ports Ports, Connectors and Cables Port/Interface Flow Control Port Default SettingsAuto-Negotiation Back Pressure Switching Port Default Settings Following table gives the port default settings 43+ Management Modes Enter Wizard Unmanaged Mode In this mode Transitioning Between Modes Transitioning Between Management Modes Restore Saved Configuration Booting the Device Managed Mode Initial Configuration Through the Set-up Wizard Welcome to Dell Easy Setup Wizard Wizard Step Wizard Step Initial Configuration Through the Web Basic Configuration Retrieving an IP Address From a Dhcp Server Web management IP Interface Parameters Startup Menu Erase Flash File Erasing the Device ConfigurationSoftware Download System Image Download Password RecoverySoftware Download Through Tftp Server Boot Image Download Using Dell OpenManage Switch Administrator Understanding the Interface Using the Switch Administrator Buttons Information Buttons Device Management Buttons Access LevelsStarting the Application Dell PowerConnect 28xx Systems User Guide Defining General Device Information Viewing Device Information Defining System Information Asset Initiating a Telnet Session Viewing the VersionsClick Apply Changes Resetting the Device Resetting the Device Entering Secure Mode Entering Secure Mode Defining IP Interface Parameters Setting static IP Interface parametersDefining Device IP Addresses No Cable Running Cable DiagnosticsViewing Copper Cable Diagnostics Open the Integrated Cable Test Click Test Now Viewing Optical Transceiver DiagnosticsPerforming a Cable Test Displaying Virtual Cable Test Results Table Open the Optical Transceiver Diagnostics Click Show All Optical Transceiver Diagnostics TXTransmitter Fault Transmitter fault LOSLoss of Signal Loss of signal Managing Device Security Password 0-64 Characters User-defined passwordAssigning Access Rights to a User Defining the Local User Databases Defining a New User Displaying the Local User Table Configuring Radius Global Parameters Deleting Users Adding a Radius Server Open the Radius SettingsDefining Radius Parameters Add Radius Server page opens Modifying the Radius Server Settings Displaying the Radius Server List Defining Snmp Parameters Deleting a Radius Server for the Radius Servers List Enabling Snmp Notifications Enabling Authentication NotificationsDefining Snmp Global Parameters Open the Snmp Community Defining CommunitiesDefining a New Community Add Snmp Community page opens Displaying all Communities Deleting Communities Defining Snmp Notification Recipients 19. Notification Recipients Add Notification Recipients page opens Adding a new Trap RecipientsOpen Notification Recipients Displaying Notification Recipients Tables Managing Files Downloading Files Firmware Download 21. File Download From Server Downloading Files Configuration DownloadUploading Files Open the File Download From Server Uploading Files Restoring Default SettingsRestoring Default Settings Open the File Upload to Server → Dhcp Server → Dhcp Server Properties in the tree view Defining Dhcp Server SettingsConfiguring Dhcp Properties Enabling the Dhcp Server 24. Dhcp Server Properties Click Apply Changes. The server is enabled Defining Network Pool Excluding Addresses Deleting Excluded Addresses Adding an Excluded AddressOpen the Excluded Addresses Manually Allocating IP Addresses Static Hosts 28. Static Hosts Add Static Host page opens Domain Name- SpecifiesAdding a new Static Host Displaying Static Hosts Tables Click Show All Static Hosts Table page opens Address Binding Deleting Static Hosts Defining Advanced Settings Configuring General Device Parameters Advanced Port Based Authentication Configuring Network SecurityPort Based Authentication Configuring Port Based Authentication → Port Based Authentication Displaying the Port Based Authentication Table Copying Parameters in the Port Based Authentication Table Select an interface in the Port Based Authentication Table Configuring Advanced Port Based Authentication Multiple Hosts Displaying the Multiple Hosts Table Multiple Hosts Table Click Show All Authenticated Users Table opens Authenticating UsersDisplaying the Authenticated Users Table Authenticated Users Table 100 101 Configuring PortsDefining Port Parameters 102 Defining Port Parameters Displaying the Port Configuration TableAggregating Ports Modifying Port Parameters LAG Configuration 104 Defining LAG Parameters Open the LAG ConfigurationCurrent Flow Control Modifying LAG Parameters 106 Configuring Green EthernetDisplaying the LAG Configuration Table 11. Green Ethernet Configuration 107 Enabling Green Ethernet on the Device Open the Green Ethernet ConfigurationEnabling Storm Control 108 Click Show All Storm Control Table opens Enabling Storm Control on the DeviceDisplaying the Storm Control Table 109 Defining Port Mirroring Sessions 110 Add Source Port page opens Adding a Port Mirroring SessionOpen the Port Mirroring 111 Deleting a Copy Port from a Port Mirroring Session Configuring Address TablesViewing Dynamic Addresses 112 113 Redefining the Aging TimeOpen the Dynamic Address Table Querying the Dynamic Address Table Configuring the Spanning Tree ProtocolDefining STP Global Settings Sorting the Dynamic Address Table 16. STP Global Settings 115 Defining STP Global Parameters Open the STP Global SettingsSelect Enable in the Spanning Tree State field Modifying STP Global Parameters Defining STP Port Settings 117 Ethernet Fast Ethernet Gigabit Ethernet 118 Modifying STP Port Properties Click Apply Changes. STP is enabled on the portEnabling STP on a Port Displaying the STP Port Table Defining STP LAG Settings 120 121 Modifying the LAG STP Parameters Configuring Rapid Spanning TreeOpen the STP LAG Settings 122 Enabling Rstp 123 124 Configuring VLANsDefining Vlan Members Create New Vlan page opens Adding New VLANsOpen the Vlan Membership 125 Deleting Vlan Membership Groups Vlan Port Membership TableModifying Vlan Membership Groups 126 127 Assigning Ports to a Vlan GroupDeleting a Vlan Open the Vlan Port Settings Defining Vlan Ports SettingsAssigning Port Settings 128 129 Defining Vlan LAG SettingsDisplaying the Vlan Port Table Displaying the Vlan LAG Table Assigning Vlan LAG SettingsOpen the Vlan LAG Setting 130 Aggregating Ports 131 Defining LAG Membership Configuring a Port to a LAGMulticast Forwarding Support Open the LAG Membership 133 Defining Multicast Global ParametersEnabling Bridge Multicast Filtering on the Device 134 Adding Bridge Multicast Address MembersEnabling Igmp Snooping on the Device Add Bridge Multicast Group page opens Adding Bridge Multicast AddressesOpen the Bridge Multicast Group Define the Vlan ID and New Bridge Multicast Address fields Assigning Multicast Forward All Parameters Defining Ports to Receive Multicast ServiceAssigning LAGs to Receive Multicast Service 136 137 Port Control Definition Open Bridge Multicast Forward All Attaching a Port to a Multicast Router or SwitchAttaching a LAG to a Multicast Router or Switch 138 Igmp Snooping 139 Displaying the Igmp Snooping Table 140 141 Viewing Rmon StatisticsViewing Rmon Statistics Group Viewing Interface Statistics Viewing ChartsViewing the CPU Utilization Open the Rmon Statistics Group 143 CPU Utilization 144 VPT Tag Classification InformationCoS Value Forwarding Queue Values 145 CoS ServicesDscp Value Forwarding Queue Values Defining CoS Global Parameters Defining CoS SettingsEnabling Quality of Service 147 Defining QoS Interface SettingsSelecting Trust Open the Interface Settings Defining Queue SettingsAssigning QoS/CoS settings for an interface Displaying the QoS Interface Settings Table 149 Defining the Queue SettingsOpen the QoS Queue Settings Open the CoS to Queue Mapping Table Mapping CoS Values to QueuesMapping a CoS value to a Queue Mapping a Dscp value and assigning priority queue Restoring default valuesMapping Dscp Values to Queues 151 Open the Dscp to Queue Check the Restore Defaults checkbox Telnet Connection Accessing the Device Through the CLIConsole Connection 153 User Exec Mode Using the CLICommand Mode Overview 154 155 Privileged Exec ModeGlobal Configuration Mode Vlan Mode Interface Configuration ModeInterface Mode Port Channel Mode CLI Commands Command copy Character Description Command debug-modeCommand do Debug-mode Command end Command exit configuration Command interface ethernet Command exit ExecCommand help 160 Interface port-channel port-channel-number Command interface port-channelCommand interface vlan Interface vlan vlan-id 162 Command ip addressNo ip address User Guidelines Command pingDefaults 163 164 Show clock show system show version Command show tech-support commandShow tech-support config memory 165 Command snmp-server community 166 167 Command usernameDefault 168 169 170 171 172 173 174 175 176 177 178 Index Page Page 182 183 184