DUA1730-0AAA02.book Page 1 Thursday, January 23, 2003 12:28 PM SuperStack® 3 Switch 4200 Series Getting Started Guide 3C17300 3C17302 3C17304 http://www.3com.com/ Part No.
DUA1730-0AAA02.book Page 2 Thursday, January 23, 2003 12:28 PM 3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 Copyright © 2002, 3Com Technologies. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Technologies.
DUA1730-0AAA02.
DUA1730-0AAA02.
DUA1730-0AAA02.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 7 Thursday, January 23, 2003 12:28 PM ABOUT THIS GUIDE This guide provides all the information you need to install and use a SuperStack® 3 Switch 4200 in its default state.
DUA1730-0AAA02.book Page 8 Thursday, January 23, 2003 12:28 PM 8 ABOUT THIS GUIDE Conventions Table 1 and Table 2 list conventions that are used throughout this guide.
DUA1730-0AAA02.book Page 9 Thursday, January 23, 2003 12:28 PM Related Documentation Related Documentation 9 In addition to this guide, each Switch documentation set includes the following: ■ SuperStack 3 Switch Implementation Guide This guide contains information on the features supported by your Switch and how they can be used to optimize your network. It is supplied in PDF format on the CD-ROM that accompanies the Switch.
DUA1730-0AAA02.book Page 10 Thursday, January 23, 2003 12:28 PM 10 ABOUT THIS GUIDE Accessing Online Documentation The CD-ROM supplied with your Switch contains the following online documentation: ■ SuperStack 3 Switch Implementation Guide (PDF format) ■ SuperStack 3 Switch Management Interface Reference Guide (HTML format) 1 To access the documentation insert the CD-ROM into your CD-ROM drive. If your PC has auto-run enabled, a splash screen will be displayed automatically.
DUA1730-0AAA02.book Page 11 Thursday, January 23, 2003 12:28 PM 1 INTRODUCING THE SUPERSTACK 3 SWITCH 4200 SERIES This chapter contains introductory information about the Switch 4200 Series and how it can be used in your network.
DUA1730-0AAA02.book Page 12 Thursday, January 23, 2003 12:28 PM 12 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4200 SERIES About the Switch 4200 Series The Switch 4200 Series are stackable 10/100/1000 Mbps devices which consists of: ■ 24 or 48 10BASE-T/100BASE-TX ports ■ 2 10/100/1000BASE-T ports ■ 2 GBIC ports (Switch 4228G only) The Switch provides high-performance workgroups with a backbone to server connection.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 14 Thursday, January 23, 2003 12:28 PM 14 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4200 SERIES WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot be used as standard traditional telephone sockets, or to connect the unit to a traditional PBX or public telephone network. Only connect RJ-45 data connectors, network telephony systems, or network telephones to these sockets.
DUA1730-0AAA02.book Page 15 Thursday, January 23, 2003 12:28 PM About the Switch 4200 Series 15 Fiber GBIC's. The default state for these ports is auto-negotiation enabled, where speed, duplex and flow control modes are negotiated. Because the speed and duplex modes are fixed by the media type, only the flow control is negotiated with the link partner. Alternatively, auto-negotiation can be disabled and the flow control setting can be manually configured.
DUA1730-0AAA02.book Page 16 Thursday, January 23, 2003 12:28 PM 16 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4200 SERIES LED Color Indicates Green flashing Packets are being transmitted/received on the port. Yellow A 10 or 100 Mbps link is present and the port is enabled. Yellow flashing Packets are being transmitted/received on the port. Green / Yellow A 10, 100 or 1000 Mbps link present but disabled. alternating Off No link is present.
DUA1730-0AAA02.book Page 17 Thursday, January 23, 2003 12:28 PM About the Switch 4200 Series Switch 4200 Series — Rear View Detail 17 Figure 4 Switch 4200 Series — rear view Supply Data Warning Label Console (max) 19200,8,1,N Power Socket Power Socket Redundant Power System Socket Console Port The Switch automatically adjusts its power setting to any supply voltage in the range 90-240 VAC.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 19 Thursday, January 23, 2003 12:28 PM 2 INSTALLING THE SWITCH This chapter contains the information you need to install and set up the Switch 4200 Series. It covers the following topics: ■ ■ ■ ■ ■ ■ Package Contents Choosing a Suitable Site Rack-mounting Placing Units On Top of Each Other The Power-up Sequence GBIC Operation WARNING: Safety Information.
DUA1730-0AAA02.book Page 20 Thursday, January 23, 2003 12:28 PM 20 CHAPTER 2: INSTALLING THE SWITCH Package Contents Choosing a Suitable Site ■ Switch unit ■ CD-ROM ■ Getting Started Guide (this guide) ■ Management Quick Reference Guide ■ Release Notes ■ Unit Information Labels ■ Warranty Information ■ Power Cord ■ 2 x Mounting brackets ■ 4 x Screws ■ 4 x Rubber feet The Switch is suited for use on a desktop, either free standing or mounted in a standard 19-inch equipment rack.
DUA1730-0AAA02.book Page 21 Thursday, January 23, 2003 12:28 PM Rack-mounting Rack-mounting 21 ■ The air is as free from dust as possible. ■ The switch is situated away from sources of conductive (electrical) dust, for example, laser printers. ■ The unit is installed in a clean, air conditioned environment. ■ The AC supply used by the switch is separate to that used by units that generate high levels of AC noise, for example, air-conditioning units and laser printers.
DUA1730-0AAA02.book Page 22 Thursday, January 23, 2003 12:28 PM 22 CHAPTER 2: INSTALLING THE SWITCH Figure 5 Fitting a bracket for rack-mounting 3 Insert the two screws and tighten with a suitable screwdriver. You must use the screws supplied with the mounting brackets. Damage caused to the unit by using incorrect screws invalidates your warranty. 4 Repeat steps 2 and 3 for the other side of the Switch. 5 Insert the Switch into the 19-inch rack and secure with suitable screws (not provided).
DUA1730-0AAA02.book Page 23 Thursday, January 23, 2003 12:28 PM Placing Units On Top of Each Other Placing Units On Top of Each Other 23 If the Switch units are free-standing, up to eight units can be placed one on top of the other. If you are mixing a variety of SuperStack® 3 Switch and Hub units, the smaller units must be positioned at the top. If you are placing Switch units one on top of the other, you must use the self-adhesive rubber pads supplied.
DUA1730-0AAA02.book Page 24 Thursday, January 23, 2003 12:28 PM 24 CHAPTER 2: INSTALLING THE SWITCH When another Switch 4200 Series unit is added to the top of an established stack, no stack renumbering occurs. If however the unit being added takes the stack height above 4 then the ‘up’ port on the top unit of the existing stack will be disabled and its LED will flash green. You will then not be able to use that port again until the link is lost on that port.
DUA1730-0AAA02.book Page 25 Thursday, January 23, 2003 12:28 PM The Power-up Sequence Table 6 25 Power/Self Test LED colors Color State Green The Switch is powered-up and operating normally. Yellow The Switch has failed its Power On Self Test. Off The Switch is not receiving power. In addition, check the Unit LEDs on all Switches in the stack. If a Unit LED is off, initialization is not complete. 3Com recommends that you do not use the Switch's management interface until the Unit LED is green.
DUA1730-0AAA02.book Page 26 Thursday, January 23, 2003 12:28 PM 26 CHAPTER 2: INSTALLING THE SWITCH port, you need a cross-over cable. Many ports on workstations and servers are configured as MDI (straight-through). If you want to make a connection to an MDI port, you need to use a standard straight-through cable. See Table 7. 3Com recommends that you use Category 5 twisted pair cable — the maximum segment length for this type of cable is 100 m (328 ft).
DUA1730-0AAA02.book Page 27 Thursday, January 23, 2003 12:28 PM GBIC Operation GBIC Operation 27 The following section describes how to insert a GBIC transceiver into a GBIC port. This section applies to the SuperStack 3 Switch 4228G only. GBIC transceivers are hot-insertable and hot-swappable. You can remove them from and insert them into any GBIC port without having to power down the Switch.
DUA1730-0AAA02.book Page 28 Thursday, January 23, 2003 12:28 PM 28 CHAPTER 2: INSTALLING THE SWITCH Use this transceiver to connect the Switch directly to a single-mode fiber-optic cable or to multimode fiber using a conditioned launch cable. ■ 1000BASE-LH70 GBIC transceiver Use this transceiver to connect the Switch directly to a single-mode fiber-optic cable or to multimode fiber using a conditioned launch cable. ■ Fiber SC connector ■ Type 4 GBIC with internal EEPROM fitted.
DUA1730-0AAA02.book Page 29 Thursday, January 23, 2003 12:28 PM GBIC Operation 29 Figure 7 Inserting a GBIC Transceiver erstack 3 Switch 4228G GBIC Ports GBIC Transceiver 3 The transceiver connects to the network using a duplex SC connector. Attach a male duplex SC connector on the network cable into the duplex SC connector on the transceiver. 4 Connect the other end of the cable to a device fitted with an appropriate Gigabit Ethernet connection.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 31 Thursday, January 23, 2003 12:28 PM 3 SETTING UP FOR MANAGEMENT Your Switch can operate in its default state, that is, you can install it and it will work straight away (plug-and-play). However, to make full use of the features offered by the Switch, and to change and monitor the way it works, you have to access the management software that resides on the Switch. This is known as managing the Switch.
DUA1730-0AAA02.book Page 32 Thursday, January 23, 2003 12:28 PM CHAPTER 3: SETTING UP FOR MANAGEMENT This section gives an overview of what you need to do to get your Switch set up and ready for management when it is in its default state. The whole setup process is summarised in Figure 8. Detailed procedural steps are contained in the sections that follow.
DUA1730-0AAA02.book Page 33 Thursday, January 23, 2003 12:28 PM Setting Up Overview IP Configuration 33 You can use one of the following methods to allocate IP information to your Switch (essential if you wish to manage your Switch across the network). Manual IP Configuration You can choose to configure the IP information yourself. The Switch remembers the information that you enter until you change it again or set the configuration method to Automatic.
DUA1730-0AAA02.book Page 34 Thursday, January 23, 2003 12:28 PM 34 CHAPTER 3: SETTING UP FOR MANAGEMENT However, as soon as a DHCP or BootP server is detected, the Switch will configure itself with the IP address allocated by that server. When using automatic IP configuration it is important that the IP address of the Switch is static, otherwise you will not know what the IP address is and it will be difficult to manage.
DUA1730-0AAA02.book Page 35 Thursday, January 23, 2003 12:28 PM Manually Configuring IP Information Manually Configuring IP Information Connecting to a Front Panel Port 35 You can manually configure the Switch IP information in the following ways: ■ Connecting to a front panel port — Connect a workstation using an Ethernet cable to a front panel port of the Switch. You can then manually enter IP information using the web interface or the command line interface (CLI).
DUA1730-0AAA02.book Page 36 Thursday, January 23, 2003 12:28 PM 36 CHAPTER 3: SETTING UP FOR MANAGEMENT Connecting the Workstation to the Switch 1 Connect the workstation to a front panel port using an Ethernet cable as shown in Figure 9. Figure 9 Connecting a workstation to the Switch via a front panel port To connect the cable: a Attach an RJ-45 connector at one end of the Ethernet cable to the Network Interface Card (NIC) in the workstation.
DUA1730-0AAA02.book Page 37 Thursday, January 23, 2003 12:28 PM Manually Configuring IP Information 37 If there is no response, wait for one minute then re-enter the default IP address. 3 At the login and password prompts, enter admin as your user name and press Return at the password prompt (default user name and password). If you have logged on correctly, a set of Getting Started pages are displayed. 4 The Getting Started pages allow you to enter basic setup information for the Switch.
DUA1730-0AAA02.book Page 38 Thursday, January 23, 2003 12:28 PM 38 CHAPTER 3: SETTING UP FOR MANAGEMENT top-level menu of the command line interface is displayed as shown in the example in Figure 10.
DUA1730-0AAA02.book Page 39 Thursday, January 23, 2003 12:28 PM Manually Configuring IP Information 39 Pre-requisites ■ A workstation with terminal emulation software installed, such as Microsoft Hyperterminal. This software allows you to communicate with the Switch via the console port directly, or through a modem. ■ Documentation supplied with the terminal emulation software.
DUA1730-0AAA02.book Page 40 Thursday, January 23, 2003 12:28 PM 40 CHAPTER 3: SETTING UP FOR MANAGEMENT 2 Open your terminal emulation software and configure the COM port settings to which you have connected the cable. The settings should be set to match the default settings for the Switch, which are: ■ 19,200 baud ■ 8 data bits ■ no parity ■ 1 stop bit ■ no hardware flow control Refer to the documentation that accompanies the terminal emulation software for more information.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 42 Thursday, January 23, 2003 12:28 PM 42 CHAPTER 3: SETTING UP FOR MANAGEMENT Viewing Automatically Configured IP Information Using 3Com Network Supervisor If you allow the Switch to automatically configure its own IP information you need to discover and view the IP information before you can begin to manage the Switch.
DUA1730-0AAA02.book Page 43 Thursday, January 23, 2003 12:28 PM Viewing Automatically Configured IP Information ■ 43 A suitable cable: ■ ■ A standard null modem cable — if you are connecting directly to the console port, or A standard modem cable — if you are connecting to the console port using a modem. You can find pin-out diagrams for both cables in Appendix B on page 67. ■ A Category 5 twisted pair Ethernet cable with RJ-45 connectors to connect your Switch to the network.
DUA1730-0AAA02.book Page 44 Thursday, January 23, 2003 12:28 PM 44 CHAPTER 3: SETTING UP FOR MANAGEMENT Viewing IP Information via the Console Port You are now ready to view the automatically allocated IP information using the command line interface. 1 Connect your Switch to the network using an Ethernet cable. As soon as a network connection is made the Switch begins the automatic IP configuration process. The automatic IP configuration process usually completes within one minute.
DUA1730-0AAA02.book Page 45 Thursday, January 23, 2003 12:28 PM Methods of Managing a Switch 45 prompt enter all. A summary of the automatically allocated IP information is displayed. Make a note of the Network IP Address. The initial set up of your Switch is now complete and the Switch is ready for you to set up your chosen management method. See “Methods of Managing a Switch” on page 45.
DUA1730-0AAA02.book Page 46 Thursday, January 23, 2003 12:28 PM 46 CHAPTER 3: SETTING UP FOR MANAGEMENT Figure 15 CLI management via the console port Figure 16 CLI management over the network Refer to “Setting Up Command Line Interface Management” on page 47. Web Interface Management Each Switch has an internal set of web pages that allow you to manage the Switch using a Web browser remotely over an IP network (see Figure 17).
DUA1730-0AAA02.book Page 47 Thursday, January 23, 2003 12:28 PM Setting Up Command Line Interface Management 47 Figure 18 SNMP management over the network Refer to “Setting Up SNMP Management” on page 49. Setting Up Command Line Interface Management CLI Management via the Console Port This section describes how you can set up command line interface management using a local console port connection or over the network.
DUA1730-0AAA02.book Page 48 Thursday, January 23, 2003 12:28 PM 48 CHAPTER 3: SETTING UP FOR MANAGEMENT 4 To open a Telnet session via the DOS prompt, enter the IP address of the Switch that you wish to manage in the following format: >telnet xxx.xxx.xxx.xxx (where xxx.xxx.xxx.xxx is the IP address of the Switch) If opening a Telnet session via third party software you will need to enter the IP address in the format suitable for that software.
DUA1730-0AAA02.book Page 49 Thursday, January 23, 2003 12:28 PM Setting Up SNMP Management 49 For the browser to operate the web interface correctly, JavaScript™ and Cascading Style Sheets must be enabled on your browser. These features are enabled on a browser by default. You will only need to enable them if you have changed your browser settings.
DUA1730-0AAA02.book Page 50 Thursday, January 23, 2003 12:28 PM 50 CHAPTER 3: SETTING UP FOR MANAGEMENT Pre-requisites ■ Documentation supplied with the SNMP network management application software. To manage your Switch using an SNMP network management application, you need to specify SNMP community strings for the users defined on the Switch.
DUA1730-0AAA02.book Page 51 Thursday, January 23, 2003 12:28 PM Default Users and Passwords ■ 51 The Security > Device > User > Modify operation on the web interface. For more information about default users and passwords, refer to the “Superstack 3 Switch Management Interface Reference Guide” on the Switch CD-ROM.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 53 Thursday, January 23, 2003 12:28 PM 4 PROBLEM SOLVING This chapter helps you to diagnose and solve problems you may have with the operation of your Switch. There is also an explanation of IP addressing.
DUA1730-0AAA02.book Page 54 Thursday, January 23, 2003 12:28 PM 54 CHAPTER 4: PROBLEM SOLVING Solving Problems Indicated by LEDs If the LEDs on the Switch indicate a problem, refer to the list of suggested solutions below. The Power LED does not light Check that the power cable is firmly connected to the Switch and to the supply outlet. If the connection is secure and there is still no power, you may have a faulty power cord or an internal fault.
DUA1730-0AAA02.book Page 55 Thursday, January 23, 2003 12:28 PM Solving Hardware Problems Solving Hardware Problems 55 SNMP fan fail trap hardware failure In the rare event of your Switch unit experiencing an SNMP fan fail trap hardware failure, refer to the suggested solution below. 1 Power off the unit. 2 Check that the air vents are not obstructed. 3 Power cycle the unit. To do this, remove and reconnect all power supplies. 4 If a further fan fail trap is received, return the unit.
DUA1730-0AAA02.book Page 56 Thursday, January 23, 2003 12:28 PM 56 CHAPTER 4: PROBLEM SOLVING The IP address is split into two parts: ■ The first part (‘192.168.100’ in the example) identifies the network on which the device resides ■ The second part (‘.8’ in the example) identifies the device within the network The natural subnet mask for this example is 255.255.255.0.
DUA1730-0AAA02.book Page 57 Thursday, January 23, 2003 12:28 PM Solving Software Upgrade Problems Solving Software Upgrade Problems 57 You can upgrade the management software of the Switch by using the System > Control > Software Upgrade operation in the Web Interface, or the system control softwareUpgrade command in the command line interface. For details on these options, refer to the Management Interface Reference Guide supplied in HTML format on the CD-ROM that accompanies your Switch.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 59 Thursday, January 23, 2003 12:28 PM A SAFETY INFORMATION You must read the following safety information before carrying out any installation or removal of components, or any maintenance procedures on the Switch 4200 Series. WARNING: Warnings contain directions that you must follow for your personal safety. Follow all directions carefully. You must read the following safety information carefully before you install or remove the unit.
DUA1730-0AAA02.book Page 60 Thursday, January 23, 2003 12:28 PM 60 APPENDIX A: SAFETY INFORMATION Important Safety Information WARNING: Installation and removal of the unit must be carried out by qualified personnel only. WARNING: If installing the Switch 4200 Series unit in a stack with SuperStack II or SuperStack 3 units that are narrower than the 4200 Series, the Switch 4200 Series unit must be installed below the narrower units. WARNING: The unit must be earthed (grounded).
DUA1730-0AAA02.book Page 61 Thursday, January 23, 2003 12:28 PM Important Safety Information 61 WARNING: The socket outlet must be near to the unit and easily accessible. You can only remove power from the unit by disconnecting the power cord from the outlet. WARNING: This unit operates under SELV (Safety Extra Low Voltage) conditions according to IEC 950. The conditions are only maintained if the equipment to which it is connected also operates under SELV conditions.
DUA1730-0AAA02.book Page 62 Thursday, January 23, 2003 12:28 PM 62 APPENDIX A: SAFETY INFORMATION WARNING: Fiber Optic ports - Optical Safety Never look at the transmit laser while it is powered-up. Never look directly at the fiber ports and fiber cable ends when they are powered-up. WARNING: Use of controls or adjustments of performance or procedures other than those specified herein may result in hazardous laser emissions.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 64 Thursday, January 23, 2003 12:28 PM 64 APPENDIX A: SAFETY INFORMATION connexion portant l'appellation Neutre et avec raccordement direct à la terre (masse). AVERTISSEMENT: Points d’accès RJ-45. Ceux-ci sont protégés par des prises de données. Ils ne peuvent pas être utilisés comme prises de téléphone conventionnelles standard, ni pour la connection de l’unité à un réseau téléphonique central privé ou public.
DUA1730-0AAA02.book Page 65 Thursday, January 23, 2003 12:28 PM Wichtige Sicherheitsinformationen 65 VORSICHT: Das Gerät muß an eine geerdete Steckdose angeschlossen werden, die europäischen Sicherheitsnormen erfüllt. VORSICHT: Der Anschlußkabelsatz muß mit den Bestimmungen des Landes übereinstimmen, in dem er verwendet werden soll. VORSICHT: Der Gerätestecker (der Anschluß an das Gerät, nicht der Wandsteckdosenstecker) muß eine passende Konfiguration für einen Geräteeingang gemäß EN60320/IEC320 haben.
DUA1730-0AAA02.book Page 66 Thursday, January 23, 2003 12:28 PM 66 APPENDIX A: SAFETY INFORMATION VORSICHT: Faseroptikanschlüsse – Optische Sicherheit Niemals ein Übertragungslaser betrachten, während dieses eingeschaltet ist. Niemals direkt auf die Faseransnchlüsse und auf die Faserkabelenden schauen, während diese eingeschaltet sind.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 68 Thursday, January 23, 2003 12:28 PM 68 APPENDIX B: PIN-OUTS Modem Cable 9-pin to RS-232 25-pin Switch 4200 Cable connector: 9-pin female RJ-45 Pin Assignments Screen TxD RxD RTS CTS DSR Shell 3 2 7 8 6 Ground DCD DTR 5 1 4 RS-232 Modem Port Cable connector: 25-pin male 1 2 3 4 5 6 7 8 20 Screen TxD RxD RTS CTS DSR Ground DCD DTR Pin assignments are identical for 10BASE-TX and 100BASE-T RJ-45 connectors.
DUA1730-0AAA02.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 71 Thursday, January 23, 2003 12:28 PM C TECHNICAL SPECIFICATIONS Switch 4226T (3C17300) Physical Dimensions Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.) Weight: 2.4 kg (5.3 lbs) Environmental Requirements Operating Temperature 0 ° to 40 °C (32 ° to 104 °F) Storage Temperature –40 ° to +70 °C (-40 ° to 158 °F) Operating Humidity 10–95% relative humidity, non-condensing Standards EN60068 to 3Com schedule (Package testing: paras 2.1, 2.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 73 Thursday, January 23, 2003 12:28 PM Switch 4250T (3C17302) 73 Switch 4250T (3C17302) Physical Dimensions Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.) Weight: 2.83 kg (6.23 lbs) Environmental Requirements Operating Temperature 0 ° to 40 °C (32 ° to 104 °F) Storage Temperature –40 ° to +70 °C (-40 ° to 158 °F) Operating Humidity 10–95% relative humidity, non-condensing Standards EN60068 to 3Com schedule (Package testing: paras 2.1, 2.
DUA1730-0AAA02.book Page 74 Thursday, January 23, 2003 12:28 PM 74 APPENDIX C: TECHNICAL SPECIFICATIONS Switch 4228G (3C17304) Physical Dimensions Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.) Weight: 2.73 kg (6.
DUA1730-0AAA02.book Page 75 Thursday, January 23, 2003 12:28 PM D TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services. This appendix describes these services. You can purchase additional services from your network supplier or from 3Com. These services can enhance warranty response times. They can also provide supplementary services not included in your product warranty.
DUA1730-0AAA02.book Page 76 Thursday, January 23, 2003 12:28 PM 76 APPENDIX D: TECHNICAL SUPPORT 3Com Knowledgebase Web Services The 3Com Knowledgebase is a database of technical information to help you install, upgrade, configure, or support 3Com products. The Knowledgebase is updated daily with technical information discovered by 3Com technical support engineers.
DUA1730-0AAA02.book Page 77 Thursday, January 23, 2003 12:28 PM Support from 3Com Support from 3Com Internet Support 77 If you are unable to obtain assistance from the 3Com online technical resources discussed earlier in this appendix, or from your network supplier, 3Com offers a range of support services. Purchase of a support contract gives you priority response and is typically more cost effective than purchasing service for a specific incident.
DUA1730-0AAA02.book Page 78 Thursday, January 23, 2003 12:28 PM 78 APPENDIX D: TECHNICAL SUPPORT Here is a list of worldwide technical telephone support numbers. These numbers are correct at the time of publication. Refer to the 3Com Web site for updated information.
DUA1730-0AAA02.book Page 79 Thursday, January 23, 2003 12:28 PM Returning Products for Repair Returning Products for Repair Before you send a product directly to 3Com for repair, you must first obtain an authorization number. Products sent to 3Com without authorization numbers will be returned to the sender unopened, at the sender’s expense. You can obtain a Return Materials Authorization number (RMA) by entering the following URL into your Internet browser: http://www.3com.
DUA1730-0AAA02.
DUA1730-0AAA02.
DUA1730-0AAA02.
DUA1730-0AAA02.book Page 83 Thursday, January 23, 2003 12:28 PM REGULATORY NOTICES FCC STATEMENT This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
DUA1730-0AAA02.
