3Com 3CR17451-91 manual

http://www.3com.com/ Part No. DUA1745-0AAA03 Published April 2005 SuperStack ® 3 Switch 3870 Family Getting Started Guide 3CR17450-91 3CR17451 -91 DUA1745-0AAA03.book Page 1 Friday, April 8, 2005 12:34 PM[...]

3Com Corporati on 350 Campus Drive Marlborough MA USA 01752-3064 Copyright © 2 004, 2005, 3Com Co rporation. All rights r eserved. No p art of this d ocumentation may be repr oduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation ) without written permissi on from 3Com Corporation[...]

C ONTENTS A BOUT T HIS G UIDE Conventions 6 Related Documentat ion 7 Accessing Online Documentation 7 Documentation Comments 8 I NTRO DUCING THE S UPER S TACK 3 S WITCH 3870 About the Switch 38 70 9 Summary of Har dwar e Feat ures 10 Switch 3870 — Fr ont View Detail 11 10BASE-T/ 100BASE-TX/ 1000BASE-T Ports 12 Dual Personality SFP Ports 12 Consol[...]

Checking for Correct Operation of LEDs 23 Connecting a Redu ndant Power Sup ply 23 Choosing the Correct Cables 24 SFP Operation 25 Appro ved SFP T ranscei vers 25 Inserting an SFP T ransceiver 25 Removing an SFP T ransceiver 27 S ETTING U P FOR M ANAGEMENT Setting Up Overview 30 IP Configuration 31 Preparing for Management 32 Manually Configuring I[...]

Solving Software Upgrade Pr oblems 51 S AFETY I NFORMATION Power Cord Set — Japan 54 Important S afety Informatio n 54 L ’informat ion de Sécur ité Importan te 56 Wichtige Sicherheitsinformationen 59 Información de segur idad importante 60 Importanti Informazioni di Sicurezza 63 Wa ż ne informacje o zabe zpieczeniach 65 P IN - OUTS Null Mod[...]

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A BOUT T HIS G UIDE This guide provides all the informat ion you n eed to install and use 3Com ® SuperStack ® 3 Switch 3870 (2 4 and 48 port) in its default state. 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 ing knowledge o f [...]

6 A BOUT T HIS G UIDE Conventions T ab le 1 and T a ble 2 list conventions that are used thr oughout this guide. Ta b l e 1 Notice Icons Icon Notice Type Description Information note Information that describes important features or instructions. Caution Information that alerts you to potential loss of data or potential damage to an application, sys[...]

Related Documentation 7 Related Documentation In addition to this guide, each Switch documentat ion set includes the following: ■ Management Quick Reference Guide This guide contains: ■ a list of software features supported by each Switch. ■ a summary of the web interface and comma nd line interface commands for the Switch. ■ Release No tes[...]

8 A BOUT T HIS G UIDE T o access th e online documentation from the CD-ROM: 1 Insert the CD-ROM into th e relevant CD-ROM drive. If your PC h as auto-run enabled, a splash scr een will be displayed automatically . 2 Select the Documentation section from the contents page. If the online documentation is to be accessed from a local drive or server , [...]

1 I NTR ODUCING THE S UPER S TACK 3 S WITCH 3870 This chapter contain s introductory information about the Switch 3870 and how it can be used in your netw ork. It covers summary information about the hardwar e and the following topics: ■ About the Swit ch 3870 ■ Switch 3870 — Front View Detail ■ Switch 3870 — Rear View Detail ■ Default [...]

10 C HAPTER 1: I NTRODUCING THE S UPER S T ACK 3 S WITCH 3870 Summary of Ha rdw a re F e at u res T abl e 3 summarizes the hardwar e features that ar e supported by the Switch 3870. Ta b l e 3 Ha rdw are f ea tu res Feature Switch 3870 MAC Addr esses Up to 16,000 supported Forwarding Modes Store and Forward Auto-negotiation Supported on all ports A[...]

Switch 3870 — Fr ont View Detail 11 Switch 3870 — Front View Detail Figure 1 Switch 3870 (24 ports) — fr ont view Figure 2 Switch 3870 (48 ports) — fr ont view WAR NI N G: RJ-45 Po rts. These are shielded RJ -45 data sockets. They cannot be used as standard traditi onal telephone sockets, or to connect the unit to a traditional PBX or publi[...]

12 C HAPTER 1: I NTRODUCING THE S UPER S T ACK 3 S WITCH 3870 10BASE-T/ 100BASE-TX/ 1000BASE-T Ports The 10BASE-T/100BASE-TX/ 1000 BASE-T ports have RJ-45 connectors an d ar e configure d as Auto MDIX (c ross-ov er). The default state for these ports is auto-negotiatio n enabled, wher e the speed, duplex and flow control modes of a link ar e automa[...]

Switch 3870 — Fr ont View Detail 13 LEDs T abl e 4 lists LEDs visible on the front of the Switch, and how to r ead their status according to color . For information on using the LEDs for problem solving, see “Checking for Correc t Operation of LEDs ” on page 23. Ta b l e 4 LED behavior LED Color Indicates Port Status/Packet LEDs Green A high [...]

14 C HAPTER 1: I NTRODUCING THE S UPER S T ACK 3 S WITCH 3870 Module LEDs Packet Yellow Packets are being transmitt ed/received on the port. Off No packets are being transmi tted/received on the port. Status Green The Module is inst alled and supported and the Link Status has been determined. Yellow The Module is installed and supported but there i[...]

Switch 3870 — Rear View Detail 15 Switch 3870 — Rear View Detail Figure 3 Switch 3870 — r ear view Expansion Module Slot Y ou can use this slot to install an Expansion Module. Contact your supplier for further informat ion. WAR NI N G: Wh en an Expansion Module is not installed, ensure the blanking plate is fitted by tightenin g all screws wi[...]

16 C HAPTER 1: I NTRODUCING THE S UPER S T ACK 3 S WITCH 3870 Some combinations of stacked 24 and 48 port units restrict the numb er of modules supported by the stack. Ta b l e 5 shows which stack configurations restrict the number of supported modules: Ta b l e 5 Maximum Stack Configurations Default Settings T ab le 6 shows the default settings fo[...]

Default Settings 17 If you initialize a Switch unit by selecting System > Control > Initialize in the Web interface or by entering system control initialize in the Command Line Interface, the fo llowing settings are r etained to allow you to connect to and manage the Switch: ■ IP Address ■ Subnet Mask ■ Default Gateway DUA1745-0AAA03.bo[...]

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2 I NSTALLING THE S WITCH This chapter contains the informat ion you need to install and set up the Switch 3870. It covers the following top ics: ■ Package Contents ■ Choosing a Suitable Site ■ Rack-mounting ■ Placing Units On T op of Each Other ■ The Power -up Sequence ■ SFP Operation WARNING: Safety Information. Befo re installing or [...]

20 C HAPTER 2: I NSTALLING THE S WITCH A VVERTENZA: Informazioni di sicurezza. Prima di installare o rimuovere qualsiasi componente dal Sw itch 3870 o di eseguire qualsiasi procedura di manutenzione, leg gere le informazioni di sicurezza riportat e nell'Appendice A della pres ente guida per l'utente. OSTRZE Ż ENIE: Informacje o zabezpiec[...]

Rack-mount ing 21 ■ power lines and fluorescent lighting fixtures. ■ The Switch is accessible and cables can be connected easily . ■ W ater or moisture cannot enter the case of the Switch. ■ 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 25 mm (1 in[...]

22 C HAPTER 2: I NSTALLING THE S WITCH Figure 4 Fitting a bracket for rack-mounting Y ou must use the screws supplied wi th the securing 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[...]

The Power-up Sequence 23 The Power -up Sequence The following sections describe how to get your Switch 3870 powered-up and r eady for operatio n. Powering-up the Switch 3870 Use the following sequence of steps to power -up the Switch. 1 Plug the power co rd into the power socket at the r ear of the Switch. 2 Plug the other end of the power cord int[...]

24 C HAPTER 2: I NSTALLING THE S WITCH For full redundancy , the unit requires two T ype 3 Power Modules combined using a T ype 3 Y -Cable (part number 3C16077). WAR NI N G: If yo u are connecting the Switch to a T ype 3 Power Mod ule, read the Safety Information section in the T ype 3 Power Module User Guide. CAUTION: The Sw itch can o nly use a S[...]

SFP Operation 25 CAUTION: If you want to install the Switch usin g a Category 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. Y ou can create a grounded port by c onnec[...]

26 C HAPTER 2: I NSTALLING THE S WITCH Use this transceiver to connect the Switch directly to a single-mode fiber -opt ic cable or to multimode fiber using a conditioned launch cable. ■ 1000BASE-LH70 SFP transceiver Use this transceiver to connect the Switch directly to a single-mode fiber -optic cable. If the SFP transceiver is faulty , it wi ll[...]

SFP Operation 27 Figure 5 Inserting an SFP T ransceiver 5 Use an appropriate cable to connect the transceiver to a suitable device. 6 Check the LEDs on the front of the Switch to ensure that it is operating correctly . Refer to “LEDs” on page 13 for more information. Removing an SFP T ransceive r If you wish to remove the transceiver (it is not[...]

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3 S ETTING U P FOR M ANAGEMENT Y our 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 of fered by the Switch, and to change and monitor th e way it works, you have to acce ss the management software that r esides on the Switch. This is kn[...]

30 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Setting Up Overview This section gives an overview of what you need to do to get your Switch set up and r eady for man agement wh en it is in i ts default st ate. The whole setup process is summarized in Figur e 6. Detailed procedural steps ar e containe d in the sect ions that follow . In brief, you need[...]

Setting Up Overview 31 CAUTION: T o protect yo ur Switch from unauthorized access, yo u must change all three default passwords as soon as possible, even if you do not intend to actively manage your Swit ch. For more inform ation on de fault users and changing default passwords, see “Def ault Users and Passwords” on page 43 . IP Configuration Y[...]

32 C HAPTER 3: S ETTING U P FOR M ANAGEMENT addresses to be configur ed so that you know what IP addr ess will be allocated to the Switch . Refer to the document ation that accompanies your DHCP server . For a detailed description of how au tomatic IP configu ration ope rates, please refer to the Implementati on Guide on the CD-ROM that accompanies[...]

Manually Configuring IP Informatio n 33 Manually Configuring IP Information Y ou can manually configure the Switch IP information in the following way: ■ Connecting to the console port — connect a workstation using a console cable to the console port of the Switch . Y ou can then manually enter IP information using the command line interface (C[...]

34 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Connecting the W orkstat ion to the Switch 1 Connect the workstation to the console port using an RJ-45 to DB9 converter cable and a standard null modem cable as shown in Figure 7. Figure 7 Connecting a workstation to th e Switch via the console port T o connect t he cable: a Insert the RJ-45 end of the R[...]

Manually Configuring IP Informatio n 35 2 At the login and password pr ompts, enter admin as your user name and press Return at the password prompt. If you have logged on correctly , the top-level menu of the co mmand line i nterface is displayed as shown in the example in Figure 8. Figure 8 Example top-level command line interface menu 3 At the Se[...]

36 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Viewing Automatically Configured IP Information If you allow the Switch to automatica lly configure its own IP information you need to discover and view the IP information before you can begin to manage the Switch. Y ou can discover the IP information in two ways: ■ Using 3Com Network Supervisor — th [...]

Viewing Automaticall y Configured IP Information 37 ■ A suitable cable: ■ An RJ-45 to DB9 converter cable. ■ A standard null modem cable — if you ar e connecting directly to the console port, or ■ A standard modem cable — if y ou are connecting to the console port using a modem. Y ou can find pin-out d iagrams for both cables in Appen d[...]

38 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Refer to th e documen tation tha t ac companies the terminal emulation software for mor e information. Viewing IP Information via the Console Port Y ou are now r eady to view the auto matically allocate d IP information using the command line interface. 1 Connect your Switch to the network using an Ether [...]

Methods of Managing a Switch 39 The initial set up of your Switch is now complete and the Switch is r eady for you to set up your chosen management method. See “Methods of Managing a Switch” on page 39. If you do not intend to use the command line interface via the conso le port to ma nage the Sw itch, you ca n disconnec t the serial cable and [...]

40 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Web In t er f ac e Management Each Switch has an inter nal set of web pages that allow you to manage the Switch using a W eb browser r emotely over an IP network (see Figur e 13). Figure 13 W eb interface management over the network Refer to “Setting Up Web Inte rface Management” on page 42. SNMP Mana[...]

Setting Up Command Line Interface Management 41 CLI Management via the Console Port T o manage a Switch using the co mmand line interface via the local console port connection: 1 Ensure you have conne cted your work station to the console port correctly as described in “Connecting to the Console Port” on page 33. 2 Y our Switch is no w ready to[...]

42 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Setting Up Web Interface Management This section describes how you ca n set up web interface man agement over the network. Pre-r equisites ■ Ensure you have already set up the Switch with IP information a s described in “Set ting Up Overview” on page 30. ■ Ensure that the Swit ch is connect ed to [...]

Setting Up SNMP Management 43 If you get an error message, check that your IP information has been entered corr ectly and the Switch is powered up. 3 Open your web browser and enter the IP address of the Switch that you wish to manage in the URL locator , for example, in the following format: http://xxx.xxx.xxx.xxx 4 At the login and password pr om[...]

44 C HAPTER 3: S ETTING U P FOR M ANAGEMENT user names, and each user name has a differ ent password and level of access. These default users are listed in T able 9. CAUTION: T o protect your Switch f rom unaut horized a ccess, you mu st change all three default passwords as soon as possible, even if you do not intend to actively manage your Switch[...]

4 P RO B L E M S OLVING 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. The topics covered ar e: ■ Solving Pr oblems In dicated by LEDs ■ So lvi ng H ardw are Pro ble ms ■ Solving Commu nication Pr oble ms ■ Solving Software Upgrade Problems[...]

46 C HAPTER 4: P ROBLEM S OLV ING Solving Problems Indicated by LEDs If the LEDs on the Switch indicate a problem, r efer to the list of suggested solutions below . The Unit LED does not light Check that the power cable is firmly connected to the Switch and to the supply outlet. If the c onnection is secure and ther e is still no power , you may ha[...]

Solving Hardware Problems 47 ■ An inter nal fan has malfunctioned . If a fan has stopped spinning, power off the unit and check the air vents for obstructio ns. If this situation occurs, the Fault LED will light red. ■ The internal PSU has failed and power is being supplied by an e xternal Redundant Power Supply (RPS). Although the Switch has a[...]

48 C HAPTER 4: P ROBLEM S OLV ING A fan failure warning message is r eceived Y our Switch has a fan monitoring syst em that will generate fan failure warning messages. Fan failure could poten tially r educe th e lifet ime of th e Switch. The monitoring system polls the fan status at periodic intervals while the unit is powered up. Should one or mor[...]

Solving Communication Problems 49 ■ The ambient temperatures and environmental conditions meet those specified in Appendix C. 4 Power cycle the unit. If a further thermal shutdown occurs, and all environmental conditions are satisfactory , return the unit to 3Com. Error message indicating that the SFP transceiver is invalid The Switch has iden ti[...]

50 C HAPTER 4: P ROBLEM S OLV ING ■ The second part (‘.8’ in the example) identifies th e device within the network The natural subnet mask for th is example is 255.255.255.0. If your network has a connection to the external IP network, that is, you access the Internet, you must appl y for a registered IP address. How do you obtain a r egiste[...]

Solving Software Upgrade Problems 51 Solving Software Upgrade Problems Y ou can upgrade the management software of the Switch by using the System > Control > Software Upgrade oper ation in the Web Interface, or the system control softwareUpgrade command in the command line interface. For details on these options, refe r to the Management Inte[...]

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A S AFETY I NFORMATION Y ou must read the following safety information befor e carrying out any installation or removal of components, or any maintenance pr ocedures on the Switch 3870. WAR NI N G: Warnings contain directions that you must follow for your personal safety . Follow all directions carefully . Y ou must read the following safety inform[...]

54 A PPENDIX A: S AFETY I NFORMATION przestrzega ć wszystkic h wskazówek. Przed instalacj ą lub demonta ż em 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 personne[...]

Important Safety Information 55 WAR NI N G: The appliance coupler (the connect or to the unit and not the wall plug) must have a configuration for mating with an EN60320/IEC32 0 appliance inlet. WAR NI N G: The socket outlet must be near to the unit and easily accessible. Y ou can only remove power from the unit by disco nnecting the power cord fro[...]

56 A PPENDIX A: S AFETY I NFORMATION tool. Keep the blanking plate and the fixings in a safe place. If you remove the Module at any tim e, yo u must then replace the blanking plate. WAR NI N G : Fiber Optic ports - Optical Safety Never look at the transmit laser wh ile it is powered-up. Never look directly at the fiber ports and fiber cable ends wh[...]

L’information de Sécurité Importante 57 A VERTISSEMENT : Cordon électrique: Il doit être agréé ans le pays d'utilisation: A VERTISSEMENT : Le coupleur d'appareil (le 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. A VERTISS[...]

58 A PPENDIX A: S AFETY I NFORMATION connexion portant l'appellation Neutre et avec raccordement direct à la terre (masse). A VERTISSEMENT : 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 po ur la conn ection d e l’unit[...]

Wichtige S icherheitsi nformationen 59 Wichtige Sicherheitsinformationen VORSICHT : Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen. VORSICHT : Wenn Sie einen Switch 3870 zusammen mit schmaleren SuperStack ® 3 Einheiten in einem Stack aufstellen, muss die Switch 3870 Einheit unterhalb dieser schmaleren Einhe iten a[...]

60 A PPENDIX A: S AFETY I NFORMATION Erdung angeschlossen sein. † Impédance à la terre. VORSICHT : RJ-45-Port e. Diese Porte si nd geschützte Datensteckdosen. Sie dürfen weder wie normale t radit ionelle T elefonsteckdosen noch für die V erbin dung der Einheit mit eine m tradit ionellem privatem oder öffentlichem T elefonnetzwerk gebraucht [...]

Información de seguridad importante 61 unidad Switch 3870 debe instalar se debajo de las unidades más estrechas. ADVERTENCIA: la unidad debe te ner toma de tierra (conexión a tierra). ADVERTENCIA: conecte la unidad a una fu ente de alimentación con toma de tierra para garantizar el cumplimiento de las normas de seguridad. ADVERTENCIA: conjunto [...]

62 A PPENDIX A: S AFETY I NFORMATION ADVERTENCIA: el enchufe debe estar cerca de la unidad y ser de fácil acceso. La única forma de cortar la a limentación de la unidad consiste en desconectar el cable eléctrico de la toma de corriente. ADVERTENCIA: esta unidad funciona en condiciones SEL V (voltaje extrabajo de seguridad) de confor midad con l[...]

Importanti Informazioni di Sicurezza 63 ADVERTENCIA: Puertos de fibra óptica: segu ridad óptica No mire nunca al láser de transmisión mientras esté encendido. No mire nunca directamente al puerto de tra nsmisión de fibra óptica ni a los extremos del cable de fibra ópt ica mientras estén conectados. El uso de controles, ajustes de rendi mie[...]

64 A PPENDIX A: S AFETY I NFORMATION A VVERTENZA: l'accoppiatore (il connettore all'unità e no n la spina a muro) deve avere una configuraz io ne abbinabile a una presa EN60320/IEC320. A VVERTENZA: la presa deve trovarsi vicino all'unità ed essere facilmente accessibile. L' unico modo per rimu overe l'alimentazione dall&a[...]

Wa¿ne informacje o zabezpieczeniach 65 privato) o a una rete telefonica pub blica. Collegare a queste porte solo prese dati RJ-45, sistemi di telefoni a o telefoni di rete. A queste prese dati è possibile collegare cavi dati schermat i o non schermati con p rese dati schermate o non schermate. A VVERTENZA: una volta inserito il modulo nello switc[...]

66 A PPENDIX A: S AFETY I NFORMATION Niezb ę dna jest zgodno ść z przepisami kraju, w którym jest stosowan y: OSTRZE Ż ENIE: Z łą czka urz ą dzenia (pod łą czona do prze łą cznika , a nie do wtyczki ś ciennej) musi by ć od powiednio dopasowana do normy EN60320/IEC320 otworu wlotowego. OSTRZE Ż ENIE: Gniazdo zasilaj ą ce musi by ć u[...]

Wa¿ne informacje o zabezpieczeniach 67 uziemiony . † impédance a la terre OSTRZE Ż ENIE: T ylko Wielka Brytania: Podczas pod łą czania modemu do portu konsoli Switch 3870 nale ż y stosowa ć tylko modem odpowiedni do pod łą czenia do sieci telekomuni- kacyjnej. OSTRZE Ż ENIE: Porty RJ-45. S ą to ekranowa ne gniazda danych RJ-45. Nie mog[...]

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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 7 4 20 5 6 8 Switch 3870 Cable connector: RJ-45 female PC/T erminal Cable connector: 25-pin male/female only required if screen always required requi[...]

70 A PPENDIX B: P IN - OUTS Modem Cable RJ-45 to RS-232 25-pin RJ-45 Pin Assignments Pin assignments are identical fo r 10/100 and 1000 RJ-45 connect ors. T able 10 Pin assignments Screen TxD RxD RTS CTS DSR Ground DCD DTR Screen TxD RxD RTS CTS DSR Ground DCD DTR Shell 3 2 7 8 6 5 1 4 1 2 3 4 5 6 7 8 20 Switch 3870 Cable connector: RJ-45 female RS[...]

RJ-45 Pin Assignments 71 T able 11 Pin assignments Pin Number 10/ 100 1000 Ports configured as MDIX 1 Receive Data + Bidirectional Data B+ 2 Receive Data - Bidirectional Data B- 3 Transmit Data + Bidirectional Data A+ 4 Not assigned Bidirectional Data D+ 5 Not assigned Bidirectional Data D- 6 Transmit Data - Bidirectional Data A- 7 Not assigned Bid[...]

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C T ECHNICAL S PECIFICATIONS Switch 3870 (24 Port) Physical Dimensions Height: 43.6 mm (1.7 in.) x W idth: 440 mm (17.32 in.) x Depth: 415 mm (16.34 in.). W eight: Under 5.0 kg. Environmental Requirements Operating Temperature 0 ° to 40 °C (32 ° to 104 °F) Storage Temperature –10 ° to +70 °C (14 ° to 158 °F) Operating Humidity 10–95% re[...]

74 A PPENDIX C: T ECHNICAL S PECIFICATIONS Switch 3870 (48 Port) Physical Dimensions Height: 43.6 mm (1.7 in.) x W idth: 440 mm (17.32 in.) x Depth: 415 mm (16.34 in.). W eight: Under 5.0 kg. Environmental Requirements Operating Temperature 0 ° to 40 °C (32 ° to 104 °F) Storage Temperature –10 ° to +70 °C (14 ° to 158 °F) Operating Humidi[...]

D O BTAINING S UPPORT FOR YOUR P R ODUCT Register Y our Product to Gain Service Benefits T o take advantag e of warranty and ot her service benefits, you must first register your product at http://eSupport.3com.com/ . 3Com eSupport services are based on accounts that you cr eate or have authorization to access. First time users must apply for a use[...]

76 A PPENDIX D: O BTAINING S UPPORT FOR YOUR P RODUCT ■ Connection Assistant helps you inst all, configure and troubleshoot 3Com desktop and server NICs, wire less cards and Bluetooth devices. This diagnostic software is located at: http://www.3com.com/prodforms/softwa re/connection_assistan t/ca_thankyou.html Access Software Downloads Software U[...]

Telephone Technical Support and Repair 77 T o sen d a product dir ectly to 3Com for r epair , 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. If your product is r egistere[...]

78 A PPENDIX D: O BTAINING S UPPORT FOR YOUR P RODUCT Latin America T elephone T echni cal Support an d Repair Antigua Argentina Aruba Bahamas Barbados Belize Bermuda Bonaire Brazil Cayman Chile Colombia Costa Rica Curacao Ecuador Dominican Republic 1 800 988 2 112 0 810 444 3 COM 1 800 998 2 112 1 800 998 2 112 1 800 998 2 112 52 5 201 0010 1 800 [...]

I NDEX A access leve ls of defa ult users 43 automatic setup 36 3Com Network Supervisor 36 console port 36 C cable 15 10/100/1000 24 pin-outs 69 CD-ROM 7 command line interface management 39 console port 12 conventions notice icons, About This Guide 6 text, About This Guide 6 cross-over configuration 24 D default settings 16 users 43 E expansio n m[...]

80 C HAPTER : I NDEX rack mounting a Switch 3870 21 redundant power system socket 15 S safety information English 54 French 5 6 German 59, 60 Italian 63 SFP Operation 25 transceivers 25 Simple Network Manag ement Pr otocol. See SNMP SNMP 43 SNMP management 40 setting up 43 specifications, system 73 stacking 15 stacking cable ports 15 straight-throu[...]

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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, pur suant to part 15 of the FCC rules. These limits are designed to provide reasonable protectio n against harmful interference when the equipment is operated in a co mmercial environment. This equipment generates, u[...]

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