3com 3C16476CS Manual do Utilizador

http://www.3com.com/Baseline Switch 2250 PlusUser GuideInstallationsanleitung3C16476CSPart No. 10015237 Rev. AAPublished August 2006

10 CHAPTER 1: INTRODUCING THE BASELINE SWITCH(half-duplex or full-duplex) are automatically determined by the capabilities of the connected device. Ea

Physical Features 11Tab le 5 10BASE-T/100BASE-TX/1000BASE-T Ports(4) Module Active LEDsThe Module Active LEDs show the status of any SFP modules tha

12 CHAPTER 1: INTRODUCING THE BASELINE SWITCH(5) Power LEDThe Power LED shows the power status of the Switch.Tab le 7 Power LED(6) Self-Adhesive Pad

2INSTALLING THE SWITCHThis chapter contains information that you need to install and set up the Switch. It covers the following topics: Positioning t

14 CHAPTER 2: INSTALLING THE SWITCHrecommends that you provide a minimum of 25 mm or 1 in. clearance). The air is as free of dust as possible. Tempe

Rack-Mounting or Free-Standing 15To rack-mount the Switch:1 Place the unit the right way up on a hard, flat surface with the front facing towards you.

16 CHAPTER 2: INSTALLING THE SWITCHPlacing Units On Top of Each OtherIf the Switch units are free-standing, up to four units can be placed one on top

Connecting a Network Device 17If POST fails, try the following: Power off the Switch, and then power it on again. Check the Power LED and see if POST

18 CHAPTER 2: INSTALLING THE SWITCHUsing SFP TransceiversThe following sections describe how to insert and remove an SFP transceiver from an SFP slot.

Performing Spot Checks 19CAUTION: SFP transceivers are keyed and can be properly inserted only one way. If the transceiver does not click when you ins

3Com Corporation • 350 Campus Drive • Marlborough • MA USA 01752-3064Copyright © 2006, 3Com Corporation. All rights reserved. No part of this document

20 CHAPTER 2: INSTALLING THE SWITCH

3CONNECTING TO THE WEB INTERFACEThe Switch has a built-in Web interface that you can use to set the admin password, change the IP address that is assi

22 CHAPTER 3: CONNECTING TO THE WEB INTERFACEThe Welcome screen of Discovery appears.Figure 5 Welcome Screen of Discovery2 If the computer has multi

Logging On to the Web Interface 23Logging On to the Web InterfaceAfter the Web interface loads in your Web browser, the first page that appears is the

24 CHAPTER 3: CONNECTING TO THE WEB INTERFACETable 10 lists the available items on the menu.Tab le 10 Available Menu ItemsMenu Item DescriptionDevi

Navigating the Web Interface 25ButtonsDepending on the screen that is currently displayed, the following buttons may appear: Apply – Click to save an

26 CHAPTER 3: CONNECTING TO THE WEB INTERFACEAccessing the Interface Without Using DiscoveryThe Discovery application works by automatically detecting

4CONFIGURING THE SWITCHThis chapter provides information on how to configure the Switch’s advanced features. Topics include: Device Summary Informati

28 CHAPTER 4: CONFIGURING THE SWITCHFigure 9 Device ViewIf you request for technical assistance from 3Com Support, you may be asked to print out the

Administration Settings 29Administration SettingsThe Administration menu includes eight administration items: IP Setup Backup Configuration Restore

CONTENTSABOUT THIS GUIDEConventions 5Related Documentation 6Documentation Comments 61 INTRODUCING THE BASELINE SWITCHOverview of the Baseline Switch 2

30 CHAPTER 4: CONFIGURING THE SWITCHIP SetupTo set the IP address for the Switch:1 Click Administration, then IP Setting on the menu. The IP Settings

Administration Settings 313 Click Restore to copy the configuration back to the Switch.For security purposes, restoring the configuration does not cha

32 CHAPTER 4: CONFIGURING THE SWITCHyour computer to re-establish communication with the Switch.RebootClicking on Administration, then Reboot on the m

Administration Settings 33Create UserThis page allows you to create a user and define the access level and password for that user.Figure 17 CreateUs

34 CHAPTER 4: CONFIGURING THE SWITCHSystem TimeClick Administration, then System Time on the menu. This screen allows you to set the system time. You

Configuring VLANs 35Figure 23 SNMP Add ScreenSNMP RemoveThis page allows you to remove community strings.Figure 24 SNMP Remove ScreenConfiguring V

36 CHAPTER 4: CONFIGURING THE SWITCHVLANClick Device, then VLAN on the menu. A screen appears with seven tabs that include: Setup Modify VLAN Modi

Configuring VLANs 37Figure 26 Modify VLAN Screen1 Enter a set of VLANs or select all VLANs to configure, then click Select.2 From the drop down menu

38 CHAPTER 4: CONFIGURING THE SWITCHRenameUse the Rename screen to change the name of a VLAN.Figure 28 Rename Screen1 Enter a set of VLANs or select

Configuring VLANs 39Port DetailChoose a port to display the tagged and untagged VLAN memberships it is associated with.Figure 30 Port Detail ScreenV

Backup Configuration 30Restore Configuration 30Firmware Upgrade 31Initialize 31Reboot 32System Access 32System Time 34SNMP 34Configuring VLANs 35VLAN

40 CHAPTER 4: CONFIGURING THE SWITCHThe Switch will only forward a frame to ports that are members (tagged or untagged) of the VLAN to which the frame

Configuring VLANs 41Figure 33 Tagged VLAN ConfigurationTo set up the configuration shown in Figure 33, do the following:1 Create VLAN2 on both Switc

42 CHAPTER 4: CONFIGURING THE SWITCHAfter all the bridges on the network have determined the configuration of their ports, each bridge only forwards t

Configuring Port Settings 43Broadcast StormUse the Broadcast Storm page to set the Switch’s broadcast storm control and threshold limits.A broadcast s

44 CHAPTER 4: CONFIGURING THE SWITCHFigure 38 Port Administration Summary ScreenDetailUse the Detail tab to display detailed port setting informatio

Configuring Port Settings 45 Duplex – Sets the duplex mode of the port. Available options include auto, half, and full.If you modify any of these set

46 CHAPTER 4: CONFIGURING THE SWITCHGuidelines for Creating Trunks Any port on the Switch can be used for creating a trunk. This switch supports a m

Configuring Port Settings 47ModifyUse the Modify tab reassign port members to a link aggregation group.Figure 43 Link Aggregation Modify ScreenTo mo

48 CHAPTER 4: CONFIGURING THE SWITCHthe Root Bridge generates BPDUs (Bridge Protocol Data Units) on all ports at a regular interval known as the Hello

Configuring Port Settings 49Figure 46 Spanning Tree Detail ScreenSetupUse the Setup tab to configure the spanning tree settings for each port. The f

ABOUT THIS GUIDEThis guide describes how to install your Switch and perform initial management configurations.This guide is intended for use by networ

50 CHAPTER 4: CONFIGURING THE SWITCHFigure 48 Port Mirroring ScreenTo set up port mirroring:1 Connect a network analyzer to a port.2 Access the Web

QoS VoIP Traffic Settings 51SetupUse the Setup tab to configure the global settings for Voice VLAN. The following options are available: Voice VLAN S

52 CHAPTER 4: CONFIGURING THE SWITCHFigure 52 QoS Port Detail ScreenOUI SummaryUse the OUI Summary tab to display the list of Organizational Unique

Security 53SecurityUsing the Web interface, you can configure the RADIUS Client and 802.1X settings.The Security menu includes two items: RADIUS Clie

54 CHAPTER 4: CONFIGURING THE SWITCHFigure 56 RADIUS Client Configure Screen802.1X SettingsThe IEEE 802.1X (dot1x) standard defines a port-based acc

Security 55SetupUse the Setup tab to configure the 802.1X authenticaion settings. The following fields are available: System Authentication – Sets th

56 CHAPTER 4: CONFIGURING THE SWITCHMonitoringUsing the Web interface, you can display address table information and cable diagnostics.The Monitoring

Monitoring 57DiagnosticsUse the Diagnostics tab to display individual port information on Test Result, Cable Fault Distance, and Last Update.Figure 62

58 CHAPTER 4: CONFIGURING THE SWITCH

5TROUBLESHOOTINGThis chapter lists some issues that you may encounter while installing, using, and managing the Switch, with suggested courses of corr

6 ABOUT THIS GUIDERelated DocumentationIn addition to this guide, each 3Com Baseline Switch 2250 Plus documentation set includes the following: Onlin

60 CHAPTER 5: TROUBLESHOOTINGForgotten Static IP AddressIf you forget the static IP address that you assigned to the Switch and you need to access the

If the Problem Persists 61Ensure that the connected device has either: Autonegotiation enabled, or The ports are configured for half-duplex operatio

62 CHAPTER 5: TROUBLESHOOTING

AOBTAINING SUPPORT FOR YOUR PRODUCTRegister Your ProductWarranty and other service benefits start from the date of purchase, so it is important to reg

64 APPENDIX A: OBTAINING SUPPORT FOR YOUR PRODUCTat http://eSupport.3com.com/, or under the Product Support heading at http://www.3com.com/Software Up

Contact Us 65.Country Telephone NumberAsia, Pacific Rim Telephone Technical Support and RepairAustraliaHong KongIndiaIndonesiaJapanMalaysiaNew Zealand

66 APPENDIX A: OBTAINING SUPPORT FOR YOUR PRODUCTAntiguaArgentinaArubaBahamasBarbadosBelizeBermudaBonaireBrazilCaymanChileColombiaCosta RicaCuracaoEcu

BSAFETY INFORMATIONImportant Safety InformationPlease refer to the safety information found in the 3Com Switch Family Safety and Regulatory Informa-ti

68 APPENDIX B: SAFETY INFORMATION

CTECHNICAL INFORMATIONRelated StandardsThe 3Com Baseline Switch 2250 Plus has been designed to the following standards:EnvironmentalPhysicalElectrical

1INTRODUCING THE BASELINE SWITCHThis chapter provides an overview of the features and capabilities of the 3Com® Baseline Switch 2250 Plus. It also ide

70 APPENDIX C: TECHNICAL INFORMATION

GLOSSARY10BASE-TThe IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable.100BASE-TXThe IEEE specification for 100 Mbps F

72 GLOSSARYcategory 5e cablesOne of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-568 standard. Category 5e can be used in Ethernet

GLOSSARY 73standard way for VLANs to communicate across switched networks.IEEE 802.1pAn IEEE standard for providing quality of service (QoS) in Ethern

74 GLOSSARYMost devices that connect to a LAN have a MAC address assigned to them as they are used to identify other devices on a network. MAC address

GLOSSARY 75developed for the interconnection of networks. Originally a UNIX standard, TCP/IP is now supported on almost all platforms, and is the prot

76 GLOSSARY

INDEXNumbers1000BASE-LX 711000BASE-SX 711000BASE-T 71100BASE-TX 7110BASE-T 71Aauto IP configuration 29default IP address 29default mask 29autonegotiat

78 INDEXchanging 32, 34default (blank) 32setting 28physical features 9port settingsconfiguring 43, 50, 53portsRJ-45 11SFP 8, 10positioning 13POST 16po

REGULATORY NOTICESFCC STATEMENTThis equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of

8 CHAPTER 1: INTRODUCING THE BASELINE SWITCHSFP PortsThe two SFP ports support fiber Gigabit Ethernet short-wave (SX) and long-wave (LX) SFP transceiv

Physical Features 9available communication paths between switches and to determine the best available path and block less optimal paths. For informati