Dell 2724 - PowerConnect Switch Betriebsanweisung

www.dell.com | support.dell.comDell™ PowerConnect™ 27XXSystemsUser’s Guide

10Auto NegotiationAuto negotiation allows an Ethernet switch to advertise modes of operation. The auto negotiation function provides the means to exch

11MAC Address Supported FeaturesMAC Address Capacity SupportThe PowerConnect 2708, 2716, and 2724 switches support a total of 8K MAC addresses, and th

12VLAN Supported FeaturesVLAN SupportVLANs are collections of switching ports that comprise a single broadcast domain. Packets are classified as belon

13A CoS is defined by the user, whereby packets are related to the same Class of Service. After a packet has been classified, it is assigned to one of

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152Hardware DescriptionSwitch Port ConfigurationsPowerConnect 2708/2716/2724/2748 Front Panel Port DescriptionThe Dell™ PowerConnect™ 2708, 2716, 2724

16Figure 2-2. PowerConnect 2708 Back PanelFigure 2-3. PowerConnect 2716 Front PanelOn the front panel, there are 16 ports, which are numbered 1 to 16,

17Figure 2-5. PowerConnect 2724 Front PanelOn the front panel there are 24 ports which are numbered 1 to 24, top down and left to right. On each port

18Figure 2-7. PowerConnect 2748 Front PanelOn the front panel, there are 48 ports, which are numbered 1 to 48, top down and left to right. On each por

19Physical DimensionsThe PowerConnect 2708 switch has the following physical dimensions:• Height — 43.2 mm (1.7008 in.)• Width — 256 mm (10.079 in.)•

Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates

20Fan LED (2748 only)On the PowerConnect 2748 front panel there is a fan LED. The following table describes the fan status LED indications.Port LEDs10

21SFP Port LEDThe following table describes the SFP LED indications.Managed Mode ButtonThe PowerConnect 2708/2716/2724/2748 has a Managed Mode push bu

22Switch Ventilation FanThe PowerConnect 2748 switch has three fans and the PowerConnect 2724 switch has one fan for system ventilation. The PowerConn

23Table 2-7. RJ-45 Pin Number Allocation for 10/100/ 1000BASE-T Ethernet PortSFP PortsThe PowerConnect 2724 switch supports two SFP transceivers combo

24Pin Connections for SFP InterfacesTable 2-8. SFP Pin ConnectionsPower ConnectorsThe PowerConnect 2708/2716/2724/2748 switches are powered by using t

253Installing the Dell™ PowerConnect™ 27XXThis chapter contains information about unpacking, installation procedures, and how to make cable and port c

26to Managed Mode. The chapter "Starting and Configuring the Dell™PowerConnect™ 2708/2716/2724/2748 for Managed Mode Operation" explains ho

27Handling Static Sensitive Devices NOTICE: Static electricity can damage electronic Ethernet switch system. To avoid damage, keep static-sensitive E

28Mounting the DeviceThe following mounting instructions apply to the PowerConnect 2708/2716/2724/2748 devices. There are three device mounting option

29Installing the DeviceThe following mounting instructions apply to all three hardware configurations of PowerConnect 2708, 2716, 2724 and 2748 device

Contents 3Contents1 IntroductionSystem Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 1-Gigabit Ethernet Ports . . . . . .

30Installing the Device on a Flat SurfaceThe device can be installed on a flat surface, such as a desk-top, if it is not installed on a rack or on a w

317Secure the unit to the wall with screws (not provided). Ensure that the ventilation holes are not obstructed.Figure 3-4. Mounting Device on a WallC

32Figure 3-5. Back Panel Power Connector2After connecting the device to a power source, confirm that the device is connected and operating correctly b

334Starting and Configuring the Dell™ PowerConnect™ 27XX NOTE: Before proceeding, read the release notes for this product. The release notes can be d

34The following information must be obtained from the network administrator before configuring the device:• The IP address to be assigned to the VLAN

352Enter the IP address, Subnet Mask and Default Gateway as supplied by the System Administrator.3Click Apply Changes.The switch is configured with th

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375Using the Dell OpenManage™ Switch AdministratorThis section provides an introduction to the Embedded Web Server (EWS), which serves HTML pages thro

38The following table lists the interface components with their corresponding numbers. Table 5-1. Interface ComponentsComponent Description 1 The tree

39Using the OpenManage Switch Administrator ButtonsThis section describes the buttons found on the Dell™ PowerConnect™ OpenManage Switch Administrator

4 ContentsPower Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Internal Power Supply Connector . . . . . . . . . . . . . . .

40Starting the Application1Open a Web browser. 2Enter the Ethernet Switch IP address (the default IP address is: 192.168.2.1) in the address bar and p

41Resetting the DeviceThe Reset page resets the device. To open the Reset page, click Reset in the tree view. Figure 5-2. Reset1Click Reset. A confirm

42Displaying Configuration on DemandThe EWS shortens user wait time by providing Data Display on Demand. When the system retrieves vast amounts of con

436Configuring System InformationThis section provides information for defining system parameters including switch status features, downloading switch

44Asset Tag (0-16 Characters) — Specifies the user-defined switch reference.Service Tag — The service reference number used when servicing the switch.

45Figure 6-2. IP AddressingDHCP — The DHCP client can be enabled to acquire the network configuration dynamically. The DHCP default value is Disable.

46Configuring DHCP Client1Open the IP Addressing page. 2Change the DHCP to Enable.3Click Apply Changes. The switch requests from the DHCP server to as

47Defining Interface ConfigurationThe Interface Configuration page enables the user to set the port parameters, such as port speed, port type, and add

48Current Port Speed — The actual synchronized port speed, in bits per second. Admin Duplex — Full Duplex (FDX) indicates that the switch interface su

49Auto — Use to automatically detect the cable type.Current MDI/MDIX — Displays the current MDI/MDIX status of the port.LAG — Specifies if port is a p

Contents 5Resetting the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Displaying Configuration on Demand. . . . . . . . . . . . .

50Current — Shows what the current status is for Jumbo Frames support.After Reset — Indicates the Jumbo Frames status after the next time the switch i

51Blank — The interface is not a VLAN member. Packets associated with the interface are not forwarded.Show VLAN ID — Displays the list of the VLAN IDs

52Figure 6-6. VLAN Interface SettingsInterface — Indicates the interface number of the port, LAG, or VLAN that is configured on the switch.PVID (1-409

53The LAG Aggregation Configuration page displays the LAGs defined, and the ports aggregated and assigned to them. To open the page, click LAG Members

54Managing System Files Use the File Management section to manage switch software, the image file, and the configuration files. Files can be downloade

55Downloading Files From ServerThe File Download page contains fields for downloading files from the TFTP server. To open the page, click File Downloa

56Figure 6-9. File Download (PowerConnect 2748 Switch Configuration)Firmware Download — The Firmware file is downloaded. If Firmware Download is selec

57Configuration DownloadServer IP Address (1-159 Characters) — The Server IP Address from which the configuration files are downloaded.Source File Nam

58Destination File Name (1-159 Characters) — Indicates the Configuration file path to which the file is uploaded. NOTE: This list of user-defined con

59Use Saved IP — Uses the saved IP address for device configuration, when selected. Use Current IP — Uses the current IP address for device configurat

6 Contents

60Local User DatabaseThe Local User Database page contains fields for defining User Names, Passwords and access Level. To open the page, click the Loc

61Adding a User to the Local User Database1Open the Local User Database page.2Select New and enter the field.3Complete the fields for the new user.4Cl

62Figure 6-13. Integrated Cable Test Port — The port to which the cable is connected.Test Result — Specifies the cable test results. One of the follow

63Optical Transceivers DiagnosticsThe Optical Transceivers Diagnostics page contains fields for performing tests on Fiber Optic cables. The optical tr

643Click show All.The test is performed and the Optical Transceiver Diagnostics test table opens.Port MirroringThe Port Mirroring mechanism monitors a

65Enabling Storm ControlWhen Layer 2 frames are forwarded, Broadcast, Multicast and Unknown Unicast frames are flooded to all ports on the designated

66Broadcast Rate Threshold (70-285000) — The rate of Broadcast threshold ranges from 70-285,000 packets per second. The default value is zero. Modifyi

67Port — The port from which the storm control is enabled.Broadcast Control — Enables or disables forwarding Broadcast packets on the switch. The defa

68The range is 3500 - 1000000. The default value is 3500. Modifying PowerConnect 2748 Storm Control Port Parameters1Open the Storm Control page.2Enter

697Configuring Quality of ServiceThis section provides information for defining and configuring Quality of Service (QoS) parameters. Quality of Servic

71IntroductionThis User’s Guide contains the information needed for installing, configuring and maintaining the PowerConnect 2708, PowerConnect 2716,

70Packets arriving untagged are assigned a default VPT value, which is set on a per port basis. The assigned VPT is used to map the packet to the egre

71Defining CoS SettingsClass of Service global parameters are set from the CoS Settings page.Configuring QoS SettingsThe CoS Settings page contains fi

72 NOTE: The interface Trust settings overrides the global Trust setting.Strict Priority — Specifies if traffic scheduling is based strictly on the q

73Mapping a CoS value to a Queue1Open the Cos to Queue page.2Define the egress queue for each CoS value.3Click Apply Changes. The CoS value is mapped

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758Viewing StatisticsRMON StatisticsRemote Monitoring (RMON) is an extension to the Simple Network Management Protocol (SNMP) which provides network t

76Received Bytes (Octets) — Number of octets received on the interface since the system was last reset. This number includes bad packets and FCS octet

77GlossaryThis glossary contains key technical words of interest. AAuto-negotiationAllows 10/100 Mpbs or 10/100/1000 Mbps Ethernet ports to establish

78Broadcast StormAn excessive amount of broadcast messages simultaneously transmitted across a network by a single port. Forwarded message responses a

79FFlow ControlEnables lower speed Ethernet switch modules to communicate with higher speed Ethernet switch module s, that is, that the higher speed E

816 1-Gigabit Ethernet PortsThe following figure illustrates the PowerConnect 2716 front panel.Figure 1-2. PowerConnect 2716 Front PanelThe PowerConne

80Ingress PortPorts on which network traffic is received.IPInternet Protocol. Specifies the format of packets and there addressing method. IP addresse

81MAC LayerA sub-layer of the Data Link Control (DTL) layer.Managed ModeProvides switch management through a web interface, and maintains the device c

82A set of rules that governs how Ethernet switch modules exchange information across networks.

83QQoSQuality of Service. QoS allows network managers to decide how and what network traffic is forwarded according to priorities, application types,

84TFTPTrivial File Transfer Protocol. Uses User Data Protocol (UDP) without security features to transfer files. TrunkingLink Aggregation. Optimizes p

9FeaturesGeneral FeaturesHead of Line Blocking PreventionHead of Line (HOL) blocking results in traffic delays and frame loss caused by traffic compet