3Comメーカー3CR17662-91の使用説明書/サービス説明書
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www.3Com.com Part No. 10014914 Rev . AA Published July 2006 3Com ® Switch 4200G Family Getting Started Guide 4200G 12-Port (3 CR17660-91) 4200G 24-Port (3 CR17661-91) 4200G 48-Port (3 CR17662-91) 10014914AA.
3Com Corporati on 350 Campus Drive Marlborough, MA 01752-3064 Copyright © 2 006, 3Com Corporation. All rights reserved . No part of this documen tation may be reproduced in any form or by any means or us ed to make any derivative work (such as translati on, transformation, or adaptation) without writt e n permission fr om 3Com Corporation.
D OWNLOAD THE LATEST SOFTWAR E AND DOCUMENTATION FOR YOUR 3C OM SWITCH Thank you for purchasing a 3Com Sw itch 4200G Family sw itch. As p art of our commitment to bringing yo u the most capable and dependable network equipment, 3Com offers fr ee software maintenance updates and documentation updates on our website.
10014914AA.book Page 4 Friday, Jul y 7, 2006 2:08 PM.
C ONTENTS D OWNLOAD THE LATEST SOFTWAR E AND DOCUMENTATION FOR YOUR 3C OM SWITCH A BOUT T HIS G UIDE Before Y ou Start 9 Release Notes 9 About Y our CD-ROM 9 Conventions 10 Related Documentat ion 11 A.
6 C ONTENTS 2 I NSTALLING THE S WITCH Package Contents 22 Choosing a Suitable Site 22 Rack-mounting 23 Placing Units On T op of Each Other 25 The Power-up Sequence 25 Powering-up th e Switch 4200G 25 .
C ONTENTS 7 Prer equisites 48 Web Management Ove r the Network 49 Setting Up SNMP Management V1 or V2 50 Prer equisites 50 Default Users and Pass words 50 Configuration Conversion Utility 51 4 P ROB L.
8 C ONTENTS A S AFETY I NFORMATION Power Cord Set—Japan 76 Important S afety Informa tion 76 L ’information de Sécurité Importante 78 Wichtige Sicherheitsinformationen 81 Información de Segur i.
A BOUT T HIS G UIDE This guide provides all the information you need to install and use the 3Com ® Switch 4200G Family . The guide is intended for use by net work administrators who are responsible for installing and setting up networ k equipment; consequently , it assumes a basic work in g knowledge of LANs (Local Area Networks).
10 A BOUT T HIS G UIDE Conventions T able 1 and T able 2 list conventions that are used throughout this guide. Ta b l e 1 Notice Ic ons Icon Notice Type Description Information note Information that d.
Related Documentation 11 Related Documentation In addition to this guide, Switch 4200G do cumentation set includes the following: ■ Switch 4200G Co nfiguration Guide This guide cont ains information on the features supported by your Switch and how they can be used to optimize your network.
12 A BOUT T HIS G UIDE Documentation Comments Y our suggestions are ve ry important to us. Th ey will help make our documentation more useful to you. Please e-mail co mments about this document to 3Com at: pddtechpubs_comments@3com.
1 I NTR ODUCING THE S WITCH 4200G F AMILY This chapter contain s introductory information about the Switch 4200G and how it can be used in your network.
14 C HAPTER 1: I NTRODUCING THE S WITCH 4200G F AMILY About the Switch 4200G The Switch 4200G Family are mixe d media devices which consist of: ■ 12, 24 or 48 10/100/1000BASE-T ports ■ Four 1000BASE-X SFP ports ■ One option module slot for a 10 Gigabit Ethernet port modu le on the Switch 4200G 1 2-Port.
Switch 4200G—Front View Detail 15 Switch 4200G—Front View Detail Figure 1 Switch 4200G 12-Port—fron t view Figure 2 Switch 4200G 24-Port—fron t view Mounting 19-inc h rack or s tandalone mount.
16 C HAPTER 1: I NTRODUCING THE S WITCH 4200G F AMILY Figure 3 Switch 4200G 48-Port—fr ont view WAR N I N G : RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot be used as standard traditional teleph one sockets, or to connect the unit to a traditional PBX or public telephone networ k.
Switch 4200G—Front View Detail 17 1000BASE-X SFP Ports SFP (Small Form Factor Pluggable) ports support fiber G igabit Ether net long-wave (LX), long-haul (LH70) an d copper (T) SFP T ransceive rs in any combination.
18 C HAPTER 1: I NTRODUCING THE S WITCH 4200G F AMILY LEDs T able 5 lists LEDs visible on the front of the Switch, and how to r ead their status. For information on using the LEDs for problem solving, see “Solving Problems Indicated by LEDs” on page 54.
Switch 4200G — Rear View Detail 19 Switch 4200G — Rear View Detail Figure 4 Switch 4200G—r ear view Power Socket The Switch automatica lly adjusts its power setting to any supply voltage in the range 100–240 V AC. 10 Gbps Interface Slots The MOD 1 and MO D 2 interface slot s accept the 10 Gbps SFP modules.
20 C HAPTER 1: I NTRODUCING THE S WITCH 4200G F AMILY Default Settings T able 6 shows the default settings for the Switch 4200G Family . Ta b l e 6 Default Settings Feature Switch 4200G Automatic IP C.
2 I NSTALLING THE S WITCH This chapter contains the informat ion you need to install and set up the Switch 4200G. It covers the following topics: ■ Package Contents ■ Choosing a Suitable Site ■ .
22 C HAPTER 2: I NSTALLING THE S WITCH A VVERTENZA: Informazioni di sicurezza. Prima di installare o rimuovere qualsiasi componente dal Sw itch 4200G o di eseguire qualsiasi procedura di manutenzione, leg gere le informazion i di sicurezza riportate nell'Appendice A della pres ente guida per l'utente.
Rack-mount ing 23 ■ W ater or moisture cannot enter the case of the Sw itch. ■ Air flow is not restricted around the Switch or through the vents in the side of the Switch. 3Com recommends that you pr ovide a minimum of 25mm (1in.) cleara nce. ■ Air temperature ar ound the Switch does not exceed 40 °C (104 ° F).
24 C HAPTER 2: I NSTALLING THE S WITCH Figure 5 Fitting a Bracket for Rack-Mounting 3 Insert the two screws and tighten with a suitable screwdriver . Y ou must use the screws supplied wi th the mounting brackets. Damage caused to the unit by using incorrect screws invalidates your warranty .
Placing Units On Top of Each Other 25 Placing Units On T op of Each Other If the Switch units ar e free-standing, up to four units can be placed one on top of the other . If you are mixing a variety of 3Com equipment, the smaller units must be positioned at the top.
26 C HAPTER 2: I NSTALLING THE S WITCH If there is evidence of a problem, see “Solving Problems Indicated by LEDs” on page 54 for a list of suggested solutions. CAUTION: The Switch has no ON/OFF switch; the only method of connecting or disconnecting main s power is by connecting or disconnecting the power cord.
SFP Operation 27 ■ 1000BASE-T SFP transceiver This transceiver uses Category 5 copper cabling with RJ-45 co nnectors and supports segment lengths of up to 100 m (328 ft ). If the SFP transceiver is faulty , it will not operate within the Switch. See “Solving Hardwar e Problems” on page 55 .
28 C HAPTER 2: I NSTALLING THE S WITCH Removing an SFP T r ansceiver If you wish to remove the transceiver (it is not necessary to power -down your Switch): 1 Disconnect the cable from the transceiver . 2 Move the wire r elease lever downwards until it is pointing toward you.
Choosing th e Correct Cables 29 CAUTION: If you want to install the Switch usin g a Categor y 5E or Category 6 cable, 3Com recomm ends that you briefly connect the cable to a grounded port before connectin g ne twork equipmen t. If you do not, the cable’ s Electrostatic Discharge (ESD) may damage the Switch's port.
30 C HAPTER 2: I NSTALLING THE S WITCH 10014914AA.book Page 30 Friday , July 7, 2006 2:0 8 PM.
3 S ETTING U P FOR M ANAGEMENT T o make full use of the features of f ered by your Switch, and to change and monitor the way it works, y ou have to access the management software that r esides on the Switch.
32 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Methods of Managing a Switch T o manage your Switch you can use one of the following methods: ■ Command line interface management ■ Command line interfa.
Methods of Managing a Switch 33 There are two main views in the CLI: ■ User View This view is shown when you first connect to the Swit ch and shows basic information about operation and statistics. The prompt for user view is <S4200G> . ■ System View This view enables yo u to configure the system parameters.
34 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Figure 10 SNMP Management over the Network Refer to “Setting Up SNMP Mana gement V1 or V2” on page 50. Setting Up Overview This section gives an overview of what you need to do to get yo ur Switch set up and ready for man agement when it is in its default stat e.
Setting Up Overview 35 Figure 11 Initial Switch Setup and Management Flow Diagram CAUTION: T o protect your Switch from unauthorized access, you must change all three default passwords as soon as possible, even if you do not intend to actively manage your Swit ch.
36 C HAPTER 3: S ETTING U P FOR M ANAGEMENT IP Configuration Y ou can use one of the following methods to allocate IP information to your Switch (essential if you wish to manage your Swit ch across the network).
Manually Configuring IP Informatio n 37 Y ou sho uld use the automatic IP configu ration method if: ■ your network uses DHCP to a llocate IP information, or ■ flexibility is needed.
38 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Connecting to the Console Port T o set up your Switch manually you can make a connection to the console port, (this example describes a loca l connect ion to the console port, rather than one using a modem).
Manually Configuring IP Informatio n 39 2 Open your terminal emulation software and configure the COM port settings to which you have conn ected the cable.
40 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Figure 13 User View Login 3 Enter th e system-view command and Enter . T o confirm that you are in the System View , the following should be displayed: [S4200G] Enter interface vlan 1 and Enter . 4 Enter the IP address and subnet mask for the Sw itch as follows: ip address xxx.
Manually Configuring IP Informatio n 41 Connecting to a Front Panel Port T o set up your Swit ch manually you can , alter natively , make a connection to a front panel port. T o do this you will need an IP address, r efer to “Viewing Automatically Configured IP Information” on page 44 for more information.
42 C HAPTER 3: S ETTING U P FOR M ANAGEMENT T o connect the cable: a Attach an RJ-45 connector at one en d of the Ethern et cable to the Network Interface Card (NIC) in the workstation. b Connect the RJ-45 connector at the other end of the cable to one of the front panel ports on the Switch.
Manually Configuring IP Informatio n 43 Using Command Line Interface using T elnet 1 T o start a T elnet session to the unit, click Start in Microsoft Windows 95/98/2000/NT/XP . a Click Run . b In the dialogue box that appea rs type the IP address of the unit, that is: Telnet xxx.
44 C HAPTER 3: S ETTING U P FOR M ANAGEMENT 7 Enter the default gateway for the Switch: ip route-static 0.0.0.0 0.0.0.0 xxx.xxx.xxx.xxx (where xxx. xxx.
Viewing Automaticall y Configured IP Informatio n 45 Connecting to the Console Port Alter natively , you can view the automat ically configu red IP information using the command line interface (CLI) through a connection to the console port. (This example describe s a local connection to the console port, rather than a remote one using a modem.
46 C HAPTER 3: S ETTING U P FOR M ANAGEMENT 4 Enter display ip interface br to view a summary of allocated IP addresses. The initial set up of your Switch is now complete and the Switch is r ead y for you to set up your chosen man agement method. See “Methods of Managing a Switch” on page 32.
Setting Up Command Line Interface Management using SSH 47 3 Check you can communicate with the Switch by entering a ping command at the DOS prompt in the f ollowing format: c: ping xxx.
48 C HAPTER 3: S ETTING U P FOR M ANAGEMENT The switch automatically generates a host key pair when it is powered up for the first time, or after any re set to factor y defaults. Host key generation may take a while, during which time SSH connections to the switch will be refused.
Setting Up Web Interface Management 49 Ta b l e 9 Supported Web Browsers and Platforms For the browser to operate the web in terface corr ectly , JavaScript™ and Cascading Style Sheets must be enabled on your browser . The se features are enabled on a browser by default.
50 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Setting Up SNMP Management V1 or V2 Any network management application running the Simple Network Management Protocol (SNMP) can manage a Switch if: ■ The correct Management Information Bases (MIBs) are installed on the management workstation.
Configuration Conversion Utility 51 CAUTION: T o protect your Switch from unauthorized access, you must change all three default passwords as soon as possible, even if you do not intend to actively manage your Switch. T able 10 Default Users Use the admin default user name (no password) to login and carr y out initial Switch setup.
52 C HAPTER 3: S ETTING U P FOR M ANAGEMENT T o download the CCU package, se lect the CCU link on the CD that accompanies your Switch 4200G. Al ter natively , the CCU download and further information is available at: http://www.3com.com/switchmigration/ 10014914AA.
4 P RO B LE M S OLVING This chapter helps you to diagnose an d solve problems you may have with the operation of your Switch. There is also an explanation of IP addressing and upgrading software.
54 C HAPTER 4: P ROBLEM S OLVING Solving Problems Indicated by LEDs If the LEDs on the Switch indicate a problem, re fer to the list of suggested solutions below . The PWR LED does not light Check that the power cable is firmly connected to the Switch and to the supply outlet.
Solving Hardware Problems 55 Auto-negotiation problems will occur with 10BASE-T or 100BASE-T where auto-negotiation is disabled a nd incorr ect cables ar e being used (cross-over or straight) Auto-neg.
56 C HAPTER 4: P ROBLEM S OLVING If a fan failure warning message is generated: 1 Power of f the unit. 2 Check that the air vents are not obstructed. 3 Power cycle the unit.
Solving Communication Problems 57 Solving Communication Problems If you experience communication problems with the Switch, ensur e that: ■ The Switch IP address and Management VLAN ID has been configured.
58 C HAPTER 4: P ROBLEM S OLVING If your IP network is inter nal to your organization only , that is, you do not access the Inter net, you may use any arbitrary IP address as long as it is not being used by another device on your network. 3Com suggests you use addresses in the range 192.
5 U PGRADING S OFTWAR E This chapter describes how to upgrade the software in your Switch 4200G. It covers the following topics: ■ Upgrading from the Command Line Interface ■ Upgrading from the Bo.
60 C HAPTER 5: U PGRADING S OFTWARE Upgrading from the Command Line Interface This section describes how to upgrad e files to y our Switch fro m the Command Line Interface (CLI). The basic procedur e is to check that you have enoug h space available in flash memory , backup your existing Switch software, and then upgrade the Switch software.
Upgrading from the Command Line Interface 61 3 The /unreserved option will cause the file to be deleted fr o m both the flash and the r ecycle-bin. T o check th at deleted files have been removed from.
62 C HAPTER 5: U PGRADING S OFTWARE T able 11 Switch 4200G Filenames 2 T o download the Web user interface file, enter: [4200G] tftp aaa.aaa.aaa.aaa get http.web 3 T o download the default configurat ion file, enter: [4200G] tftp aaa.aaa.aaa.aaa get 3ComOScfg.
Upgrading from the Command Line Interface 63 After the update is complete and you have verified that everything is working, the files that were saved in the backup phase can be deleted from the file system.
64 C HAPTER 5: U PGRADING S OFTWARE The following information is disp layed if the download h as been successful: 200 PORT command successful. 150 Opening ASCII mode data connecti on for vrpcfg.def(10986 bytes).......226 Transfer complete. FTP: 10986 byte(s) received in 8.
Upgrading from the Command Line Interface 65 XModem (using the console cable) T o upgrade software to your Switch using XModem do the following : 1 From the User View , enter: xmodem get unit1>flash:/3ComOScfg.
66 C HAPTER 5: U PGRADING S OFTWARE Upgrading from the Bootrom Interface This section describes how to upgr ade your Switch from the Bootrom Interface. Introduction When the Switch is running the initial boot phase usin g the console, the following prompt is displayed with a five second countdown timer: Press CTRL-B to enter Boot Menu.
Upgrading from the Bootrom Interface 67 3 Select option 3 from the Boot Menu. A file list similar to the following is displayed: Boot menu choice: 3 Free Space: 10469376 bytes The current application file is s3t0 3_01_00s56.
68 C HAPTER 5: U PGRADING S OFTWARE TF TP T o upg rade software to your Switch using TF TP , do the following: 1 From the Boot Menu, select option 1 (D ownload application file to flash) to display the following: 1. Set TFTP protocol parameter 2. Set FTP protocol parameter 3.
Upgrading from the Bootrom Interface 69 2 Select option 2 to display the following: Load File name: Switch IP address: Server IP address: FTP User Name: FTP User Password: 3 Enter the file name, Switc.
70 C HAPTER 5: U PGRADING S OFTWARE 4 Press Enter to start the download. The following information is displayed: Now please start transfer file with XMODEM protocol If you want to exit, Press <Ctrl+X> Loading.
Upgrading the Bootrom 71 A similar scr een will be displayed fo r the configuration files and the web files. In each case, the file is given the attribute “main” or “backup” Bootrom Upgrade us.
72 C HAPTER 5: U PGRADING S OFTWARE 2 Select option 2 to display the following: Load File name: Switch IP address: Server IP address: FTP User Name: FTP User Password: 3 Enter the file name, Switch IP.
Upgrading the Bootrom 73 4 Press Enter to start the download. The following informat ion is displayed: Now please start transfer file with XMODEM protocol If you want to exit, Press <Ctrl+X> Loading .
74 C HAPTER 5: U PGRADING S OFTWARE 10014914AA.book Page 74 Friday , July 7, 2006 2:0 8 PM.
A S AFETY I NFORMATION Y ou must read the following safety information before carrying out any installation or removal of components, or any maintenance pr ocedures on the Switch 4200G. WAR NI N G : Warnings contain directions that you mu st follow for your personal safety .
76 A PPENDIX A: S AFETY I NFORMATI ON urz ą dzenia nale ż y uwa ż nie przeczyta ć poni ż sze informacje o bezpiecze ń stwie. Power Cord Set—Japan Important Safety Information WAR NI N G : Installation and removal of the unit must be carried out by qualified personnel only .
Important Safety Information 77 WAR NI N G : The appliance coupler (the connecto r to the unit and not the wall plug) must have a configuration for mating with an EN603 20/IEC320 appliance inlet. WAR NI N G : The socket outle t must be near to the unit and easily accessible.
78 A PPENDIX A: S AFETY I NFORMATI ON WAR NI N G : Fiber Optic ports—Optical Safety Never look at the transmit laser while it is powered on. Never look directly at the fiber TX port and fiber cable ends when they are p owered on.
L’information de Sécurité Importante 79 A VERTISSEMENT : Le coupleur d'appareil (l e connecteur du groupe et non pas la prise murale) doit respecter une configuration qui permet un branchement sur une entrée d'appareil EN60320/CEI 320.
80 A PPENDIX A: S AFETY I NFORMATI ON A VERTISSEMENT : Ports pour fibres op tiques—sécurité sur le plan optique. Ne regardez jamais le laser d'émission en utilisant un dispositif d'agrandissement, tant qu'il est so us tension.
Wichtige S icherheitsi nformationen 81 Wichtige Sicherheitsinformationen VORSICHT : Alle V erfahren die in dieser Anleitung beschrieben werden gelten für alle Modelle, sofern nicht anders angegeben. W o eine V orgehensweise für die Schalter 5500-SI 24 und Schalter 55 00-SI 52 gilt wird nur der Begriff Schalter verw endet.
82 A PPENDIX A: S AFETY I NFORMATI ON Bedingungen sind nur ge geben, wenn auch die an das Gerät angeschlossenen Geräte unter SEL V -B edingungen betrieben werden.
Información de Seguridad Importante 83 ADVERTENCIA: Conjunto de cables eléctricos: Debe estar homologado para el país donde se utilice: ADVERTENCIA: El acoplador del equipo (el co nector para la unidad y no la toma de la pared) debe tener un a configuración que se adapte a una entrada del equipo EN60320/IEC320.
84 A PPENDIX A: S AFETY I NFORMATI ON secundario etiquetado como neutro conectado direct amente a tierra. †Impédance à la terre. ADVERTENCIA: Sólo para el Reino Unido: si conecta un módem al puerto de consola del 4200G, utilice sólo un módem que sea adecuado para la conexión con el si st ema de telecomunicaciones.
Importanti Informazioni di Sicurezza 85 A VVERTENZA: Set dei cavi di alimentazione Deve essere approvato per il paese in cui viene utilizzato. A VVERTENZA: L'accoppiatore (il connettore all'un ità e no n la spina a muro) deve avere una configuraz io ne abbinabile a una presa EN60320/IEC320.
86 A PPENDIX A: S AFETY I NFORMATI ON contrassegnato come Neutro, colle gato direttamente a terra. †Impédance à la terre. A VVERTENZA: Solo Regno Unito. Se si collega un modem alla porta Console dello 4200G, utilizzare solo un modem idoneo per il collegamento con il sistem a di telecomunicazi oni.
Wa ż ne informacje o zabezpieczeniach 87 Niezb ę dna jest zgodno ść z przepisami kraju, w którym jest stosowan y: OSTRZE Ż ENIE: Z łą cz ka urz ą dzenia (pod łą czona do prze łą cznika, a nie do wtyczki ś ciennej) musi by ć odpowiednio do pasowana do normy EN60320/IEC320 otworu wlotowego.
88 A PPENDIX A: S AFETY I NFORMATI ON mente a tierra. †Impédance ŕ la terre. OSTRZE Ż ENIE: T ylko Wielka Brytania: Podczas pod łą czania modemu do portu konsoli Switch 4200G nale ż y stosowa ć tylko modem odpowiedni do pod łą czenia do sieci telekomuni- kacyjnej.
B P IN - OUTS Null Modem Cable RJ-45 to RS-232 25-pin PC-A T Serial Cable RJ-45 to 9-pin Screen TxD RxD Ground RTS CTS DSR DCD DTR Screen RxD TxD Ground RTS DTR CTS DSR DCD Shell 3 2 5 7 8 6 1 4 1 3 2.
90 A PPENDIX B: P IN - OUTS Modem Cable RJ- 45 to RS-232 25-pin Ethernet Port RJ-45 Pin Assignments 10/100 and 1000BASE-T RJ- 45 connections. T able 10 Pin assignments T able 11 Pin assignments Screen.
Ethernet Port RJ-45 Pin Assignments 91 3 Transmit Data + Bidirectional Data A+ 4 Not assigned Bidirectional Data A- 5 Not assigned Bidirectional Data D+ 6 Transmit Data – Bidirec tional Data D- 7 Not assigned Bidirectional Data C+ 8 Not assigned Bidirectional Data C- Pin Number 10/ 100 1000 10014914AA.
92 A PPENDIX B: P IN - OUTS 10014914AA.book Page 92 Friday , July 7, 2006 2:0 8 PM.
C T ECHNICAL S PECIFICATIONS Switch 4200G 12-Port Physical Dimensions Height: 44 mm (1.7 in.) x Width: 440 mm (17 .3 in.) x Depth: 274 mm (10.8 in.) Weight: 4.
94 A PPENDIX C: T ECHNICAL S PECIFICATIONS Switch 4200G 24-Port Physical Dimensions Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.
Switch 4200G (48-Port) 95 Switch 4200G (48-Port) Physical Dimensions Height: 44 mm (1.7 in.) x Width: 440 mm (17 .3 in.) x Depth: 274 mm (10.8 in.) Weight: 4.
96 A PPENDIX C: T ECHNICAL S PECIFICATIONS 10014914AA.book Page 96 Friday , July 7, 2006 2:0 8 PM.
D O BTAINING S UPPORT FOR YOUR P R ODUCT Register Y our Product W arrant y and other service benefits start from the date of purchase, so it is important to register your product quickly to ensure you get full use of the warranty and other service benefits available to you.
98 A PPENDIX D: O BTAINING S UPPORT FOR YOUR P RODUCT T roubleshoot Online Y ou will find support tools posted on the 3Com web site at http://www.3com.com/ 3Com Knowledgebase helps you troubleshoot 3Com products. This query-based interactive tool is located at http://knowledgebase.
Contact Us 99 T o send a product dir ectly to 3Com for repair , you must first obtain a return authorization number (RMA). Products sent to 3Com, without authorization numbers clearly marked on the outside of the package, will be returned to the sender unopened, at the sender’ s expense.
100 A PPENDIX D: O BTAINING S UPPORT FOR YOUR P RODUCT Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy 01 7956 7124 070 700 770 7010 7289 01080 2783 0825 809 622 01805 404 747 06800 12813 1407 3387 1800 945 379 4 199 161346 Luxembourg Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U.
I NDEX 101 I NDEX Numbers 3C number 2 4 A access levels of default us ers 50 automatic setup 44 3Com Network Director 44 console port 45 B browsers choosing 48 C cable 10/100/1000 28 FX 29 pin-outs 89.
102 I NDEX R rack mounting a Swit ch 5500 23 related documentation 11 S safety information English 76 French 7 8 German 81 Italian 84 Spanish 82 serial number of the Switch 24 SFP transceivers 26 Simple Network Management Protocol.
R EGULATORY N OTICES FCC S TATEMENT This equipment has been tested and found to comply wi th the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection ag ainst harmful interference when the equipment is operated in a co mmercial environment.
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デバイス3Com 3CR17662-91の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
3Com 3CR17662-91をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこには3Com 3CR17662-91の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。3Com 3CR17662-91の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。3Com 3CR17662-91で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
3Com 3CR17662-91を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又は3Com 3CR17662-91の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、3Com 3CR17662-91に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわち3Com 3CR17662-91デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
