Page 3 - ONTENTS
C ONTENTS A BOUT T HIS G UIDE Conventions 7 Related Documentation 8 Paper Documents 9 Documents on CD-ROM 9 World Wide Web Site 9 3Com Facts Automated Fax Service 10 Year 2000 Compliance 10 1 A BOUT THE S WITCH 4007 Overview 11 Physical Description 11 Switch Features 12 Management Features 13 Switch...
Page 7 - This; Conventions
A BOUT T HIS G UIDE This Switch 4007 Getting Started Guide provides an overview of your Switch 4007 and its components, describes the power management subsystem, provides information about what occurs when you start up your switch, explains how to use the online manuals on CD-ROM, and lists importan...
Page 8 - Related Documentation; Documents are available in three forms:; Table 2
8 A BOUT T HIS G UIDE Related Documentation The following documents compose the Switch 4007 documentation set. Documents are available in three forms: ■ Paper documents This section lists the paper documents that are shipped with your system. ■ CD-ROM The Switch 4007 Online Manuals CD-ROM contains o...
Page 9 - Paper Documents
Related Documentation 9 Paper Documents These documents are shipped with the Switch 4007 chassis: ■ Switch 4007 Getting Started Guide (this guide) ■ An overview of the switch and its components ■ A description of the power subsystem ■ Important safety, location, and preinstallation information ■ How...
Page 10 - Com Facts Automated Fax Service; The 3Com Facts; automated fax service provides
10 A BOUT T HIS G UIDE 3Com Facts Automated Fax Service The 3Com Facts SM automated fax service provides technical articles, diagrams, and troubleshooting instructions on 3Com products 24 hours a day, 7 days a week. Call 3Com Facts using your Touch-Tone telephone: 1 408 727-7021 Year 2000 Compliance...
Page 11 - Overview; Physical Description
1 A BOUT THE S WITCH 4007 This chapter contains an overview of the 3Com ® Switch 4007 and describes the Gigabit Ethernet and Fast Ethernet starter kits. The topics in this chapter include: ■ Overview ■ Switch 4007 Starter Kits ■ Hardware Components Overview The Switch 4007 is a high-performance modu...
Page 12 - Figure 1; Figure 2; Switch Features; The Switch 4007 has the following features:
12 C HAPTER 1: A BOUT THE S WITCH 4007 Figure 1 and Figure 2 show the front and the rear, respectively, of the Switch 4007. Figure 1 Switch 4007 Chassis Front View Figure 2 Switch 4007 Chassis Rear View Switch Features The Switch 4007 has the following features: ■ An intelligent power management sys...
Page 13 - warm; Management Features
Overview 13 ■ Slots for two Enterprise Management Engine (EME) management modules that do not take up interface module or switch fabric module space. Switch 4007 starter kits are supplied with with one management module (Model Number: 3CB9EME) installed in the lower slot. You can install a second ma...
Page 14 - Four configurations are available:; Layer 2 Gigabit Ethernet Starter Kit
14 C HAPTER 1: A BOUT THE S WITCH 4007 Switch 4007 Starter Kits 3Com enables you to simplify your installation by selecting from four pre-configured starter kits. Four configurations are available: ■ Layer 2 Gigabit Ethernet Starter KitModel Number: 3C16810 ■ Layer 3 Gigabit Ethernet Starter KitMode...
Page 15 - Hardware Components; Power Supplies
Hardware Components 15 Layer 3 Fast Ethernet (10/100BASE-TX) Starter Kit Model Number: 3C16815 The Layer 3 FEN (10/100BASE-TX) Starter Kit has 48 copper Fast Ethernet ports and 3 GBIC slots for uplinks. This starter kit is preinstalled with the following options: ■ EME Management Module (Model Numbe...
Page 16 - Figure 3; warm swapping; 30-watt AC Power Supply; Figure 4
16 C HAPTER 1: A BOUT THE S WITCH 4007 Power Supplies The Switch 4007 can contain two back-loading, 930-watt, modular AC power supplies (Model Number 3CB9EP9). The power supplies provide power to the management modules, switch fabric module, interface modules, fans, and backplane. Figure 3 shows a 9...
Page 17 - Fan Tray; Figure 5; Module Slots in the Switch 4007 Chassis; The chassis contains:; Management slots; — There are two slots (slot 8; Payload slots; — There are six slots (slot 1 through; Switch fabric slots; screw
Hardware Components 17 Fan Tray The Switch 4007 chassis contains one fan tray, which contains four fans (Model Number 3CBEF7). The fans cool the interface modules, the switch fabric module, and the management modules. Figure 5 Switch 4007 Chassis Fan Tray Module Slots in the Switch 4007 Chassis You ...
Page 20 - Switch Fabric Modules; 8 Gbps or 48 Gbps switching capacity; -port Gigabit Ethernet Switch Fabric; Model Number: 3CB9FG9; Figure 6; To learn more about this module, refer to the; 4-port Gigabit Ethernet Switch Fabric
20 C HAPTER 2: S WITCH 4007 M ODULES Switch Fabric Modules The Switch 4007 supports 9-port and 24-port Gigabit Ethernet Switch Fabric modules. Both switch fabric modules fit into slot 7 of the Switch 4007 chassis. 3Com enables you to simplify your installation by selecting from four pre-configured s...
Page 21 - Figure 7; Management Modules; Figure 8; You manage the switch through:; Table 3; Allows you to
Management Modules 21 Figure 7 Front Panel of 24-port Switch Fabric Module To learn more about this module, refer to the 24-Port Gigabit Ethernet Switch Fabric Module Quick Start Guide on the Online Manuals CD-ROM. Management Modules The Switch 4007 chassis contains two slots (slots 8 and 9) for Man...
Page 22 - Enterprise Management Engine Quick Start Guide; Fast Ethernet Modules; Figure 9; Front Panel of Module 3CB9LF20MM
22 C HAPTER 2: S WITCH 4007 M ODULES For information about how to install the EME and how to perform an initial configuration, see the Enterprise Management Engine Quick Start Guide on the Online Manuals CD-ROM. Fast Ethernet Modules The frame-based switching modules are intelligent Layer 2 and Laye...
Page 23 - Gigabit Ethernet Modules; Quick Start Guide
Gigabit Ethernet Modules 23 Figure 10 identifies the components on the front panel of the module. Figure 10 Front Panel of Module 3CB9LF36R To learn more about this module, refer to the 36-Port 10/100BASE-TX Fast Ethernet RJ-45 Layer 2 Switching Module Quick Start Guide on the Online Manuals CD-ROM....
Page 24 - -port Gigabit Ethernet Interface Module; -port Gigabit MultiLayer Switching Module
24 C HAPTER 2: S WITCH 4007 M ODULES 4-port Gigabit Ethernet Interface Module Model Number: 3CB9LG4 The 4-port Gigabit Ethernet (GEN) Interface Module (GBIC) is an interface for gigabit rate data between the Switch 4007 chassis backplane and other 802.3z-compliant Gigabit Ethernet devices. The modul...
Page 25 - GBIC Transceivers; SX GBIC Transceiver; GBIC; GBIC
GBIC Transceivers 25 Figure 14 identifies the components on the front panel of the module. Figure 14 Front Panel of Module 3CB9RG4 To learn more about this module, refer to the 4-Port Gigabit Ethernet Layer 3 Switching Module (GBIC) Quick Start Guide on the Online Manuals CD-ROM. GBIC Transceivers T...
Page 26 - 0-km Long Haul GBIC Transceiver; Administration Console Access; Enterprise Management Engine User Guide.; Command; Table 4; Module type
26 C HAPTER 2: S WITCH 4007 M ODULES 70-km Long Haul GBIC Transceiver Model Number: 3CGBIC97 The 70-km Gigabit Ethernet GBIC Fiber-Optic Transceiver connects to the network using a fiber-optic duplex SC connector. To learn more about this transceiver, refer to the 70-km Gigabit Ethernet GBIC Transce...
Page 27 - Web Management Access; Where to Go from Here
Where to Go from Here 27 Web Management Access Web Management applications are an embedded part of the Switch 4007. They include Web Console, DeviceView, and Performance monitoring tools. Additional installable applications include online Help. After you have set up your IP address for the Switch, y...
Page 29 - This chapter contains the following topics:
3 I NSTALLING THE S WITCH 4007 This chapter contains the following topics: ■ Site Requirements for the Switch 4007 ■ Preinstallation Guidelines ■ Installing the Chassis Figure 16 summarizes the installation procedure. For a Switch 4007 starter kit, you can simplify the installation proceedure becaus...
Page 30 - Site Requirements for the Switch 4007; Location Requirements
30 C HAPTER 3: I NSTALLING THE S WITCH 4007 Site Requirements for the Switch 4007 This section describes the following site requirements for setting up your Switch 4007: ■ Location Requirements ■ Precautionary Guidelines ■ Ventilation Requirements ■ Power Requirements ■ Safety Information Location R...
Page 31 - at least two; Telco Rack Unit — 7 RU; Use at least two people to install any chassis.
Site Requirements for the Switch 4007 31 ■ For rack installations, the selected rack is grounded in accordance with the rack manufacturer’s recommendations. ■ To reduce the possibility of personal injury or serious damage to the chassis, use at least two people to install the chassis. This is especi...
Page 32 - To maintain proper cooling in the chassis; Preinstalled
32 C HAPTER 3: I NSTALLING THE S WITCH 4007 WARNING: To maintain proper cooling in the chassis and to maintain safety compliance, make certain that blank faceplates cover any empty slots. ■ If you install more than one chassis in a rack, install the bottom chassis first. Make certain that there is s...
Page 33 - Ventilation Requirements; Operate a Switch 4007 chassis with four; Power Requirements; Table 5 lists power requirements for each country.
Site Requirements for the Switch 4007 33 Ventilation Requirements This section describes ventilation requirements for the Switch 4007. The chassis contains one fan tray that contains four fans. To ensure that installed fans are able to provide adequate ventilation, maintain at least 7 cm (2.76 in.) ...
Page 34 - Safety Information; Denmark Safety Certification; Laser Safety Information:; FDA Class 1 Laser Device
34 C HAPTER 3: I NSTALLING THE S WITCH 4007 Safety Information This section lists warning notices to read before you install the Switch 4007 and its components. WARNING: The Switch 4007 must be installed only by trained service personnel. WARNING: To maintain proper cooling in the chassis and mainta...
Page 35 - LED Warning; To ensure optical safety when you install; Preinstallation Guidelines; Rack-Mount Installation Guidelines; Before you attempt to mount the chassis in a rack:
Preinstallation Guidelines 35 LED Warning The following warning is required when you install fiber-optic communication modules into the Switch 4007: WARNING: To ensure optical safety when you install a fiber-optic interface module, comply with the following precaution: Although the data communicatio...
Page 36 - Installing the Chassis; This section contains:; Installing the Chassis in a Rack
36 C HAPTER 3: I NSTALLING THE S WITCH 4007 Figure 18 shows two types of racks that you may use to install the Switch 4007 chassis. Figure 18 Rack Types ■ Move the Switch 4007 chassis close to where you plan to install it. Place the chassis in front of the rack, table, or shelf that you plan to use....
Page 37 - bottom; Installing the Chassis Using Rack-Mount Clip Nuts; each
Installing the Chassis 37 3 Use the preinstalled flange pins in the Telco rack slot to position the chassis in the rack. Support the back of the chassis until the two bottom screws are fully inserted. 4 While you support the back of the chassis, insert one bottom screw on each side of the chassis an...
Page 38 - Safety regulations state that the selected; Attaching the Chassis Feet; Installing the Chassis on a Table or Shelf
38 C HAPTER 3: I NSTALLING THE S WITCH 4007 Installing the Chassis on a Table or Shelf This section describes how to attach plastic feet to the chassis and how to install the chassis on a table or a shelf. WARNING: Safety regulations state that the selected table or shelf must be able to support at ...
Page 39 - Where To Go from Here; Task
Where To Go from Here 39 Where To Go from Here After you have installed the chassis, use the following information to proceed: Task See this document Install power supplies Power Supply Installation Guide Install an EME Enterprise Management Engine Quick Start Guide Install a switch fabric module Gi...
Page 41 - Power On the Switch; specific to that; What Occurs During Startup; Table 7; Characters in Display Indication
4 S TART THE S WITCH This chapter summarizes what happens when you power on your Switch 4007 after you have installed all the switch components. Before you power on the Switch 4007, review the setup tasks (Figure 16 on page 29) and make certain that all the tasks have been performed. Power On the Sw...
Page 42 - Where; and; or; Table 8
42 C HAPTER 4: S TART THE S WITCH If you power on a power supply and it is not operating, the Character Display displays the following: PWR x . Where x is the number of the power supply that is not operating. The installed switch fabric module Status LED flashes green. When the power-on phase has co...
Page 43 - EME Management Module Architecture; Configurations
5 M ANAGEMENT T OOLS The Switch 4007 supports a range of network management methods and contains an embedded Web-based management agent. This chapter contains: ■ EME Management Module Architecture ■ Switch 4007 Setup Wizard ■ Transcend Network Supervisor ■ Web Management Tools EME Management Module ...
Page 44 - Transcend Network Supervisor
44 C HAPTER 5: M ANAGEMENT T OOLS ■ In-Band and Out-of-Band Download — The management module provides both in-band and out-of-band downloads. In-band download uses TFTP (Trivial File Transfer Protocol) through a network connection. Out-of-band download uses XMODEM software and the RS-232 serial port...
Page 45 - Web Management Tools; Features; Software CD; Browser and Platform Requirements
Web Management Tools 45 Transcend Network Supervisor is included on the Switch 4007 Software CD. You can obtain the latest version from 3Com at: http://www.3com.com/ Web Management Tools The Web Management suite of features consists of embedded Web Management applications and installable tools. This...
Page 46 - Browser Support; Installing Supplemental Tools; Windows Installation; Table 9; Feature
46 C HAPTER 5: M ANAGEMENT T OOLS Browser Support Web Management requires Microsoft Internet Explorer 4.01 or later OR Netscape Navigator 4.03 or later. If you are using Netscape Navigator 4.03 or 4.04, be sure to install the Netscape JDK 1.1 Patch. Download the patch from this URL: http://help.nets...
Page 47 - Custom; Finish; UNIX Help Installation
Web Management Tools 47 To download the installable Web Management tools: 1 Close all open programs and applications. 2 In the CD directory, locate the webmanagev30.exe file. 3 Double-click the file and follow the instructions in the installation wizard. Select one of these three types of installati...
Page 48 - Setting Up the Form-specific Help Files; Help Installation URL
48 C HAPTER 5: M ANAGEMENT T OOLS Setting Up the Form-specific Help Files To access Help, install the Help files on your workstation using Help Files Install or Typical in the installation wizard. See “Windows Installation” or “UNIX Help Installation”. The first time that you access Help, the system...
Page 49 - Interface Description
Web Management Tools 49 Interface Description The screen for the embedded Web Management applications is divided into three areas (Figure 21): ■ Tabs panel — At the top of the Web Management screen, the Tabs panel has three tabs: ■ WebConsole tab — When you select this tab, the menu tree lists folde...
Page 50 - Web Management and Internet Explorer
50 C HAPTER 5: M ANAGEMENT T OOLS Web Management and Internet Explorer If you are using Microsoft Internet Explorer, install the latest 4.01 Service Pack 1. This service pack makes Internet Explorer Year 2000-compliant and fixes other product support issues. Download the 4.01 Service Pack 1 from the...
Page 51 - Web Management and Netscape Navigator
Web Management Tools 51 4 In the Security Settings area, scroll down to Java per- missions and select the Custom option button. The Java Custom Settings button at the bottom of the dialog box is now available. 5 Click Java Custom Settings. 6 Select the Edit Permissions tab. If you cannot configure t...
Page 52 - is set through the; Examples of Good and Problematic; Settings; The following setting is also acceptable:; Additional Resources for Solving Problems; Release
52 C HAPTER 5: M ANAGEMENT T OOLS In Windows NT, your CLASSPATH is set through the System icon in the Control Panel. If you do not know how to change your environment variables, ask your system administrator. Examples of Good and Problematic CLASSPATH Settings This minimal setting is required for We...
Page 53 - Only trained electrical service personnel; Routine Maintenance; The Switch 4007 sends a fan fault
6 M AINTAINING THE S WITCH 4007 This chapter describes the routine maintenance to perform to keep your Switch 4007 chassis working at its best. This chapter also provides instructions for replacing power supplies and fan trays. WARNING: Only trained electrical service personnel should perform switch...
Page 54 - Removing and Replacing a Power Supply; When you replace a power supply, leave a; command to display current power conditions; Removing a 930-watt Power Supply; Remove the power cord from the electrical outlet.; On position
54 C HAPTER 6: M AINTAINING THE S WITCH 4007 Removing and Replacing a Power Supply This section describes how to remove and then replace the 930-watt AC power supply (Model Number 3CB9EP9) in the Switch 4007 chassis. CAUTION: When you replace a power supply, leave a sufficient number of power suppli...
Page 55 - To prevent damage to the guide pins and; Replacing a 930-watt Power Supply
Removing and Replacing a Power Supply 55 4 Remove the power supply (Figure 23). a Using a flat-blade screwdriver, loosen the spring-loaded screws that secure the power supply to the back of the chassis. b Face the back of the chassis and grasp the power supply handle. c Pull the power supply straigh...
Page 56 - You feel a slight resistance as the connectors engage.; Removing and Replacing a Fan Tray
56 C HAPTER 6: M AINTAINING THE S WITCH 4007 Figure 25 Installing a 930-watt Power Supply Using the Handle You feel a slight resistance as the connectors engage. CAUTION: If the resistance is too great, the power supply connectors and the backplane connectors may not be aligned properly. Do not forc...
Page 57 - Removing the Fan Tray from a Chassis; Before you completely remove the fan
Removing and Replacing a Fan Tray 57 Removing the Fan Tray from a Chassis The Switch 4007 chassis contains one fan tray. The fan tray contains four fans. Fans in the power supplies help to ventilate the Switch, but they are not designed to act as a substitute for the dedicated fan tray. To remove th...
Page 58 - Replacing the Fan Tray in a Chassis; hot swapping
58 C HAPTER 6: M AINTAINING THE S WITCH 4007 Replacing the Fan Tray in a Chassis You can install a fan tray in your Switch 4007 chassis while the power is still on. This is called hot swapping . To install a new fan tray: 1 Grasp the handle on the fan tray and then face the front of the chassis. 2 L...
Page 59 - Installing a 16 MB Expansion Memory Card; Introduction; enables you to simplify your installation by; Safety Precautions; Allow only trained service personnel to
Installing a 16 MB Expansion Memory Card 59 6 Verify that the fan tray is flush with the front of the chassis. If the fan tray and the chassis are not aligned, remove the fan tray and reseat it. 7 Using a flat-blade screwdriver, tighten the two spring-loaded screws to secure the fan tray to the fron...
Page 60 - Hazardous energy exists within the; ESD Safety Information; Use proper grounding techniques.; Handling Precautions; When you handle the EME, follow these precautions:; Unpacking Procedure; Ensure that the box also contains the
60 C HAPTER 6: M AINTAINING THE S WITCH 4007 WARNING: Hazardous energy exists within the Switch 4007 system. Use extreme caution when you install, remove, or replace the EME or a memory card. When the system is on, never insert metal objects such as a screwdriver or a finger with jewelry into open m...
Page 61 - Removing an EME from the Chassis; hot swap; Installing Expansion Memory; To avoid damage due to static discharge,
Installing a 16 MB Expansion Memory Card 61 Removing an EME from the Chassis If you have two EMEs in the chassis, upgrade the inactive (slave) EME first. You do not need to power off the Switch 4007 chassis to install, remove, or replace the EME module. You can replace the module while the chassis i...
Page 62 - Reinstalling the EME; To reinstall an EME module:; Open the module ejector handles.; Verifying EME Operation; If the character display on the EME shows; CARD; when; Characters in Display
62 C HAPTER 6: M AINTAINING THE S WITCH 4007 Reinstalling the EME To reinstall an EME module: 1 Before you start the reinstallation process, read “Safety Precautions” and “Handling Precautions” earlier in this document. WARNING: Hazardous energy levels exist inside of the chassis. Do not place hands...
Page 63 - PECIFICATIONS; Chassis Specifications; Physical; To maintain proper ventilation, keep the
A S PECIFICATIONS This appendix lists the following specifications for the Switch 4007: ■ Physical ■ Environmental ■ Power ■ Regulatory Compliance ■ Interfaces Chassis Specifications This section contains specifications for the Switch 4007. Physical Environmental CAUTION: To maintain proper ventilat...
Page 64 - Power; For use in Denmark, each 3CB9EP9; Regulatory Compliance; Output voltage; EMC Directive
64 A PPENDIX A: S PECIFICATIONS Power WARNING: For use in Denmark, each 3CB9EP9 power supply must receive power from a separately dedicated socket outlet having a 16-ampere fuse in the installation. This product must be mounted in a fixed installation such as a permanent rack. WARNING: Ved brug i Da...
Page 65 - Interfaces; Power Supply Regulatory Compliance; Safety
Power Supply Regulatory Compliance 65 Interfaces Power Supply Regulatory Compliance This section lists regulatory standards for the following Switch 4007 930-watt AC power supply. 930-watt AC Power Supply Network Interfaces 45 Mbps DS-3: BNC 34 Mbps E3: BNC 2.047 Mbps E1/nxE1 (IMA): RJ-48-c 1.54 Mbp...
Page 68 - Power Management; The EME manages power use in the chassis by:; Power Availability and Power Supply Capacity; Power available to modules; — The amount of; Power capacity of a power supply; — The
68 A PPENDIX B: I NTELLIGENT P OWER S UBSYSTEM Power Management The Enterprise Management Engine (EME) works protects network integrity using power management. The EME determines how much power a Switch 4007 module requires before it permits the module to power on. The EME manages power use in the c...
Page 69 - Power Supply Modes; Non-Fault Tolerant Mode
Power Management 69 See the documentation that is supplied with each module to determine your module power requirements. Take into account any modules that you plan to install, as well as those that are already installed. Power Supply Modes The Switch 4007 runs in either of two power supply modes: ■...
Page 70 - command at the EME prompt.
70 A PPENDIX B: I NTELLIGENT P OWER S UBSYSTEM Operate the Switch 4007 in power fault-tolerant mode to ensure that power that is equivalent to at least one power supply is available to replace power that is lost if a single power supply fails. To set the Switch 4007 to power fault-tolerant mode or t...
Page 71 - Online Technical Services; World Wide Web Site
C T ECHNICAL S UPPORT 3Com ® provides easy access to technical support information through a variety of services. This appendix describes these services. Information contained in this appendix is correct at time of publication. For the most recent information, 3Com recommends that you access the 3Co...
Page 72 - Com FTP Site; Com Bulletin Board Service; Access by Analog Modem; Call 3Com Facts using your Touch-Tone telephone:
72 A PPENDIX C: T ECHNICAL S UPPORT 3Com FTP Site Download drivers, patches, software, and MIBs across the Internet from the 3Com public FTP site. This service is available 24 hours a day, 7 days a week. To connect to the 3Com FTP site, enter the following information into your FTP client: ■ Hostnam...
Page 73 - Support from Your Network Supplier; Diagnostic error messages; Diagnostic error messages; Country
Support from Your Network Supplier 73 Support from Your Network Supplier If you require additional assistance, contact your network supplier. Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services, including network planning, installation, hardware mai...
Page 74 - Returning Products for Repair; To obtain an authorization number, call or fax:
74 A PPENDIX C: T ECHNICAL S UPPORT 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. To obtain an a...
Page 77 - LOSSARY; Both 10 Mbps and 100 Mbps on the same port.
G LOSSARY 10/100 Both 10 Mbps and 100 Mbps on the same port. ambient air temperature The temperature of air that surrounds any electrical part or device. Usually refers to the effect of such temperature in aiding or slowing down removal of heat by radiation and convection from the part or device in ...
Page 78 - A 100 Mbps local area data network technology.
78 G LOSSARY client/server A single-user computer that requests application or network services from a server. CoS Class of Service. This feature differentiates traffic into classes and assigns prioritization to those classes. collision Overlapping transmission of two or more nodes onto media. All d...
Page 79 - Gigabit Ethernet; The IEEE standard for bridging.; IGMP
G LOSSARY 79 Gigabit Ethernet The IEEE standard for 1000 Mbps Ethernet; compatible with existing 10/100 Ethernet standards. The IEEE, with the help of the Gigabit Ethernet Alliance, defines the standard for full duplex over fiber-optic cable and short-haul copper cable. header Protocol control infor...
Page 82 - A central backplane aggregator for the Switch 4007.
82 G LOSSARY router A device that connects two remote networks by selectively forwarding messages between them. A router differs from a bridge and a gateway in that it selectively forwards information between the networks. Routers can be implemented in pairs, or a router may communicate directly wit...
Page 85 - NDEX; Numbers
I NDEX Numbers 3Com bulletin board service (3Com BBS) 723Com Facts 723Com URL 9, 71930-watt power supply 16, 65 A access mechanisms EME 21Transcend Network Control Services 21Web Management 21 ambient temperature, maximum 30, 63amperage 34, 64architecture chassis management 43 B bandwidth capacity 1...
Page 89 - Com Corporation L; IMITED
3Com Corporation L IMITED W ARRANTY Switch 4007 H ARDWARE 3Com warrants to the end user (“Customer”) that this hardware product will be free from defects in workmanship and materials, under normal use and service, for one (1) year from the date of purchase from 3Com or its authorized reseller. 3Com’...
Page 90 - A P
When an advance replacement is provided and Customer fails to return the original product to 3Com within fifteen (15) days after shipment of the replacement, 3Com will charge Customer for the replacement product, at list price. Advance Replacement is provided for ninety (90) days, after which time i...