Features, Summary of PowerConnect Models | Dell 28XX instruction

Summary of PowerConnect Models

The following table summarizes the PowerConnect models.

Table 1-1. PowerConnect Models

Model	Copper Ports/	Optical Ports/	RS232 serial port -	Fans
	RJ-45 Connectors	GbE	baud rate is 9600 bps

PowerConnect 2808 8 built-in 10/100/1000 Base-T ports		none	Internal console port	none
PowerConnect 2816	16 built-in 10/100/1000 Base-T ports	none	External console port	none
PowerConnect 2824	24 built-in 10/100/1000 Base-T ports	2 SFP (combo)	External console port	1
PowerConnect 2848	48 built-in 10/100/1000 Base-T ports	4 SFP (combo)	External console port	2

Features

General Features

Management Modes

The device supports the following modes:

•Managed Mode — Provides switch management through the web interface.

•Unmanaged Mode — In this mode, the device operates as a hub with default configuration, and configuration cannot be changed.

•Secure Mode — This mode keeps the existing configuration active, but it prevents users from making configuration changes by removing the IP address of the device so that it becomes inaccessible for configuration.

For more information about the management modes, see "Management Modes" on page 49.

Head of Line Blocking Prevention

Head of Line (HOL) blocking results in traffic delays and frame loss caused by traffic competing for the same egress port resources. HOL blocking queues packets, and the packets at the head of the queue are forwarded before packets at the end of the queue. By default, the device is configured so that the HOL blocking prevention mechanism is active at all times, except when QoS (Quality of Service), Flow Control or Back Pressure is active on a port where the HOL blocking prevention mechanism is disabled on the whole system.

Back Pressure Support

On half-duplex links, the receiving port prevents buffer overflows by occupying the link so that it is unavailable for additional incoming traffic. The user may enable or disable this feature on a per-port basis. The default status on all ports is set to OFF.

Dell PowerConnect 28xx Systems User Guide

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Dell 28XX manual Summary of PowerConnect Models, General Features

Contents

User Guide December Contents Retrieving an IP Address From a Dhcp Server Port Connections, Cables, and Pinout Information Using the Switch Administrator Buttons Using Dell OpenManage Switch Administrator 114 Configuring the Spanning Tree Protocol 116103 144 126133 134 161 158 System Description PowerConnectIntroduction PowerConnect 2816 Front Panel General Features FeaturesSummary of PowerConnect Models AutoMDI/MDIX Support Virtual Cable Testing VCTAuto Negotiation Jumbo Frames Support Layer 2 Features MAC Address Supported Features Vlan Supported Features Spanning Tree Protocol Features Ethernet Switch Management Features Class of Service CoS Features Hardware Description Switch Port ConfigurationsPowerConnect 28xx Front and Back Panel Port Description PowerConnect 2808 Back Panel PowerConnect 2824 Front Panel PowerConnect 2824 Back Panel LED Definitions Physical Dimensions Port LEDs Power LEDManaged Mode LED Fan LED 2824/2848 only SFP Port LED Managed Mode ButtonSwitch Ventilation Fan RJ-45 Connections for 10/100/1000BASE-T Ports Port Default Settings Connector Port/Interface CableCables, Port Connections, and Pinout Information 1000BASE-T Cable Requirements SFP Pin Connections Pin No Use SFP Ports Internal Power Supply Connector Power Connectors Installation Precautions Installing the PowerConnect Device Unpacking the Device Package ContentsSite Requirements Unpacking Overview Device Rack InstallationMounting the Device Bracket Installation for Rack Mounting Installing on a Flat Surface Bracket Installation for Wall Mounting Installing on a Wall Connecting the Device to the Network Connecting the Device Connecting the Terminal to the Device Connecting to Console Port Connecting a Device to a Power Supply RJ-45 Connections for 10/100/1000BaseT Ports Ports, Connectors and Cables Port/InterfacePort Connections, Cables, and Pinout Information Back Pressure Port Default SettingsAuto-Negotiation Flow Control Port Default Settings Function Switching Port Default Settings Dell PowerConnect 28xx Systems User Guide Starting and Configuring the Device Installation and Configuration Flow Booting the Device Managed Mode Initial Configuration Managed Mode Wizard Step Welcome to Dell Easy Setup Wizard Wizard Step Finally, setup the default gateway Advanced Configuration Retrieving an IP Address From a Dhcp Server Startup ProceduresStartup Menu Procedures Erase Flash File Software Download System Image Download Erasing the Device ConfigurationPassword Recovery Software Download Through Tftp Server Boot Image Download Management Modes Default Values Transitioning Between Management Modes Transitioning Between Modes Restore Saved Configuration Returning to Managed Mode Dell PowerConnect 28xx Systems User Guide Understanding the Interface Using Dell OpenManage Switch Administrator Interface Components Name Device Representation Information Buttons Description Using the Switch Administrator ButtonsLed Indicators Component Name Information Buttons Device Management Buttons Description Access LevelsStarting the Application Device Management Buttons Dell PowerConnect 28xx Systems User Guide Dell PowerConnect 28xx Systems User Guide Viewing Device Information Configuring System InformationDefining General Device Information Asset Initiating a Telnet Session Viewing the VersionsDefining System Information Click Apply Changes Resetting the Device Resetting the Device Entering Secure Mode Entering Secure Mode Defining IP Interface Parameters Defining Device IP Addresses Setting static IP Interface parameters Running Cable DiagnosticsViewing Copper Cable Diagnostics Open the IP Interface Parameters Set Dhcp to Enable Integrated Cable Test for Copper Cables Performing a Cable Test Displaying Virtual Cable Test Results Table Viewing Optical Transceiver Diagnostics Open the Optical Transceiver Diagnostics Click Show All Defining the Local User Databases Password 0-64 Characters User-defined passwordAssigning Access Rights to a User Managing Device Security Deleting Users Defining a New UserDisplaying the Local User Table Click Show All Local User Table opens Select a User Name Configuring Radius Global Parameters Adding a Radius Server Open the Radius SettingsDefining Radius Parameters Displaying the Radius Server List Modifying the Radius Server SettingsAdd Radius Server page opens Deleting a Radius Server for the Radius Servers List Defining Snmp ParametersClick Show All Radius Servers List page opens Enabling Snmp Notifications Enabling Authentication NotificationsDefining Snmp Global Parameters Add Snmp Community page opens Defining CommunitiesDefining a New Community Open the Snmp Community Deleting Communities Displaying all Communities 19. Notification Recipients Defining Snmp Notification Recipients Displaying Notification Recipients Tables Adding a new Trap RecipientsOpen Notification Recipients Add Notification Recipients page opens Click Show All Notification Recipients Tables page opens Managing FilesDownloading Files Firmware Download Configuration Download Open the File Download From Server Uploading FilesDownloading Files Uploading Files Defining Dhcp Server SettingsRestoring Default Settings Restoring Default Settings → Dhcp Server → Dhcp Server Properties in the tree view Configuring Dhcp Properties Enabling the Dhcp Server Click Apply Changes. The server is enabledDefining Network Pool 25. Network Pool Excluding Addresses Deleting Excluded Addresses Adding an Excluded AddressOpen the Excluded Addresses 28. Static Hosts Manually Allocating IP Addresses Static Hosts Add Static Host page opens Adding a new Static Host Click Show All Static Hosts Table page opens Displaying Static Hosts Tables Deleting Static Hosts Configuring Address Binding Configuring General Device Parameters Defining Advanced Settings Update with your book title Advanced Port Based Authentication Configuring Device SwitchingConfiguring Network Security Port Based Authentication → Port Based Authentication Configuring Port Based Authentication Update with your book title Displaying the Port Based Authentication Table Select an interface in the Port Based Authentication Table Copying Parameters in the Port Based Authentication Table 100 Configuring Advanced Port Based Authentication 101 Displaying the Multiple Hosts Table 102 Authenticating UsersDisplaying the Authenticated Users Table Click Show All Authenticated Users Table opens 103 Configuring PortsDefining Port Parameters 104 Modifying Port Parameters Displaying the Port Configuration TableAggregating Ports Defining Port Parameters 106 LAG Configuration 107 Displaying the LAG Configuration TableDefining LAG Parameters Modifying LAG Parameters 108 Configuring Green EthernetLAG Configuration Table opens 109 11. Green Ethernet Configuration 110 Open the Green Ethernet ConfigurationEnabling Storm Control Enabling Green Ethernet on the Device 111 Enabling Storm Control on the DeviceDisplaying the Storm Control Table Click Show All Storm Control Table opens 112 Defining Port Mirroring Sessions 113 Adding a Port Mirroring SessionOpen the Port Mirroring Add Source Port page opens 114 Configuring Address TablesViewing Dynamic Addresses Deleting a Copy Port from a Port Mirroring Session 115 Redefining the Aging TimeOpen the Dynamic Address Table Sorting the Dynamic Address Table Configuring the Spanning Tree ProtocolDefining STP Global Settings Querying the Dynamic Address Table 117 16. STP Global Settings Modifying STP Global Parameters Open the STP Global SettingsSelect Enable in the Spanning Tree State field Defining STP Global Parameters 119 Defining STP Port Settings 120 Ethernet Fast Ethernet Gigabit Ethernet Displaying the STP Port Table Click Apply Changes. STP is enabled on the portEnabling STP on a Port Modifying STP Port Properties 122 Defining STP LAG Settings 123 124 Configuring Rapid Spanning TreeOpen the STP LAG Settings Modifying the LAG STP Parameters 19. Rapid Spanning Tree Rstp 125 126 Configuring VLANsDefining Vlan Members Enabling Rstp 127 Adding New VLANsOpen the Vlan Membership Create New Vlan page opens 128 Vlan Port Membership TableModifying Vlan Membership Groups Deleting Vlan Membership Groups 129 Assigning Ports to a Vlan GroupDeleting a Vlan 130 Defining Vlan Ports SettingsAssigning Port Settings Open the Vlan Port Settings 131 Defining Vlan LAG SettingsDisplaying the Vlan Port Table 132 Assigning Vlan LAG SettingsOpen the Vlan LAG Setting Displaying the Vlan LAG Table 133 Aggregating Ports Open the LAG Membership Configuring a Port to a LAGMulticast Forwarding Support Defining LAG Membership 135 Defining Multicast Global ParametersEnabling Bridge Multicast Filtering on the Device 136 Adding Bridge Multicast Address MembersEnabling Igmp Snooping on the Device Define the Vlan ID and New Bridge Multicast Address fields Adding Bridge Multicast AddressesOpen the Bridge Multicast Group Add Bridge Multicast Group page opens 138 Defining Ports to Receive Multicast ServiceAssigning LAGs to Receive Multicast Service Assigning Multicast Forward All Parameters Port Control Definition 139 140 Attaching a Port to a Multicast Router or SwitchAttaching a LAG to a Multicast Router or Switch Open Bridge Multicast Forward All 141 Igmp Snooping 142 Displaying the Igmp Snooping Table 143 Viewing Statistics 144 Viewing Rmon StatisticsViewing Rmon Statistics Group 145 Viewing ChartsViewing Interface Statistics Open the Rmon Statistics Group 146 Viewing the CPU Utilization CoS Value Forwarding Queue Values Configuring Quality of ServiceCoS to Queue Mapping Table Default values VPT Tag Classification Information 148 CoS ServicesDscp to Queue Mapping Table Default Values Dscp Value Forwarding Queue Values 149 Enabling Quality of ServiceDefining CoS Global Parameters Selecting Trust Displaying the QoS Interface Settings Table Defining QoS Interface SettingsAssigning QoS/CoS settings for an interface Open the Interface Settings 151 Defining Queue SettingsClick Show All QoS Interface Settings Table page opens 152 Defining the Queue SettingsOpen the QoS Queue Settings 153 Mapping CoS Values to QueuesMapping a CoS value to a Queue Open the CoS to Queue Mapping Table Mapping a Dscp value and assigning priority queue Restoring default values 154Mapping Dscp Values to Queues 155 156 Telnet Connection Managing the Device Using the CLIAccessing the Device Through the CLI Console Connection 158 Using the CLICommand Mode Overview User Exec Mode 159 Privileged Exec ModeGlobal Configuration Mode Port Channel Mode Interface Configuration ModeInterface Mode Vlan Mode Command copy CLI CommandsCommand asset-tag Character Description Command debug-modeCommand Mode Usage Guidelines Command exit configuration Command doCommand end Help Command exit ExecCommand help Examples Interface port-channel port-channel-number Command interface ethernetCommand interface port-channel Interface ethernet interface Ip address ip-address Command interface vlanCommand ip address Interface vlan vlan-id Defaults Command ip default-gatewayCommand login Command ping 168 169 Command reloadCommand show tech-support command Reload 170 Show tech-support config memory 171 Command snmp-server communityDefault 172 Command username 173 Glossary 174 175 Host FlappingFlow Control Fragment 177 178 179 180 181 182 183 Index 184 185 186