3Com 3C16116, 3C16115 User Manual

SuperStack® 3

Webcache 1000 (3C16115) Webcache 3000 (3C16116) User Guide

http://www.3com.com/

Part No. DUA1611-5AAA02 Published May 2001

3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145

Copyright © 2001, 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.

3Com Technologies reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Technologies to provide notification of such revision or change.

3Com Technologies provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.

If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentation, or on the removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

If you are a United States government agency, then this documentation and the software described herein are provided to you subject to the following:

All technical data and computer software are commercial in nature and developed solely at private expense. Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries.

3Com and SuperStack are registered trademarks of 3Com Corporation. The 3Com logo and CoreBuilder are trademarks of 3Com Corporation.

Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Novell and NetWare are registered trademarks of Novell, Inc. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd.

Netscape Navigator is a registered trademark of Netscape Communications. JavaScript is a trademark of Sun Microsystems All other company and product names may be trademarks of the respective companies with which they are

associated.

ENVIRONMENTAL STATEMENT

It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we are committed to:

Establishing environmental performance standards that comply with national legislation and regulations. Conserving energy, materials and natural resources in all operations. Reducing the waste generated by all operations. Ensuring that all waste conforms to recognized environmental

standards. Maximizing the recyclable and reusable content of all products. Ensuring that all products can be recycled, reused and disposed of safely. Ensuring that all products are labelled according to recognized environmental standards. Improving our environmental record on a continual basis.

End of Life Statement

3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components.

Regulated Materials Statement

3Com products do not contain any hazardous or ozone-depleting material.

Environmental Statement about the Documentation

The documentation for this product is printed on paper that comes from sustainable, managed forests; it is fully biodegradable and recyclable, and is completely chlorine-free. The varnish is environmentally-friendly, and the inks are vegetable-based with a low heavy-metal content.

CONTENTS

ABOUT THIS GUIDE

Conventions 12 Related Documentation 13 Documentation Comments 13 Product Registration 14

IGETTING STARTED

1 INTRODUCING THE WEBCACHE

What is the Webcache? 17 The Webcache and 3Com Network Supervisor 18 Webcache — Front View Detail 19

LEDs 19

Webcache — Rear View Detail 20

Power Socket 20 Console Port 20 WAN Port 21 LAN Port 21 WAN and LAN Port LEDs 21

Default Settings 22

2 INSTALLING THE WEBCACHE

Package Contents 26 Choosing a Suitable Site 26 Rack-Mounting the Webcache 27 The Power-up Sequence 31

Powering-up the Webcache 31 Checking for Correct Operation of LEDs 32 Solving Problems Indicated by LEDs 32

Deploying the Webcache in Your Network 33

Proxy Cache 33 Transparent Cache 34 Migrating from Proxy Cache to Transparent Cache Mode 35 Deploying the SuperStack 3 Firewall as a Proxy Forwarder 35

Setting Up the Webcache for Management 36

Before You Begin 37 Setting Up Using the Web Interface 38

Setting Up Using the Command Line Interface 40 Getting Started Wizard Settings 43 Connecting the Webcache to the Live Network 44

Choosing the Correct Cables 44

Connecting the Webcache 44 Network Configuration Concepts 45

IP Addresses 45

Subnets and Using a Subnet Mask 46

Default Router 46

Domain Name System 47

Domain Name System Syntax 47

3 CONFIGURING WEB BROWSERS

Manual Configuration 49 Proxy Auto Configuration (PAC) File Scripts 50 Web Proxy Auto-Discovery (WPAD) 53

Web Proxy Auto-Discovery Resources 54 Third-party Tools 54

II WEBCACHE FEATURES

4 MANAGING THE WEBCACHE

Management Software Interfaces 57 Logging in as a Default User 58 Accessing the Web Interface 58 Understanding the Web Interface 60 The Banner 60 The Toolbar 61

The Summary View 61

The Device View 61

The Help View 63 The Navigation Tree 64 The Information Area 65

5 SYSTEM TIME

Configuring the System Time 67 What is the Network Time Protocol? 68 Choosing a Network Time Protocol Server 68 Configuring the System Time Using the Network Time Protocol 69 Configuring the System Time Manually 69 System Time and Performance Graphs 69

6 SECURITY

What are Passwords? 71 Setting Passwords 71 What is Password Recovery? 72 Enabling/Disabling Password Recovery 72 Performing Password Recovery 73

7 CONTROLLING AND MONITORING WEB ACCESS

What is Web Site Blocking? 75 Configuring Web Site Blocking 76 Customizing the Response 76 What is Web Client Blocking? 77 Configuring Web Client Blocking 78 What is Access Logging? 79 Configuring Access Logging 80 Viewing the Access Log 81 Analyzing the Access Logs 81

8 SYSTEM EVENTS

What are System Events? 83 Email Notification 83

Configuring Email Notification 83

SNMP Traps 85

Configuring SNMP Traps 86

9 PERFORMANCE MONITORING

What is Performance Monitoring? 87 Caching Performance Graphs 87 System Performance Graphs 89 I/O Performance Graphs 89

10 SYSTEM DIAGNOSTICS

What are System Diagnostics? 91 Pinging Other Devices 91

Performing a Ping 91

Tracing IP Addresses 92

Performing a Trace Route 92

System Log 93

Configuring the System Log 93 What is a Syslog Server? 94 Obtaining a Syslog Server 94 Viewing the System Log 95

11 SOFTWARE UPGRADE AND INSTALLATION

What is a Software Upgrade? 97

Software Upgrade SNMP Traps 98

Unsuccessful Software Upgrades 98 Detecting Software Upgrades 98 Performing a Software Upgrade 99 What is a Software Installation? 102

Unsuccessful Software Installations 102 Performing a Software Installation 102 Saving and Restoring Configurations 103 Saving a Configuration 105 Restoring a Configuration 105

III COMMAND LINE INTERFACE

12 COMMAND LINE INTERFACE

Accessing the Command Line Interface 109

Accessing the Command Line Interface Through the Console Port 110 Accessing the Command Line Interface Over the Network 111

Logging In To the Command Line Interface 111

Exiting the Interface 111

Understanding the Command Line Interface 112

Entering Commands 113 Displaying Menus 113

Obtaining Help 114 A Quick Guide to the Commands 114 Getting Started 115 Exiting the Command Line Interface 117 Displaying and Changing IP-related Information 117

Specifying Basic IP Configuration 118

Specifying Domain Name System Configuration 118

Resetting IP Information to Factory Default Settings 119

Pinging Other Devices 119

Displaying IP Summary Information 120

Tracing IP Addresses 120 Displaying and Changing Security Information 121

Changing the Admin Password 121

Enabling and Disabling Password Recovery 122 Displaying and Changing Webcache Information and Functions 122

Initializing the Webcache 122

Rebooting the Webcache 123

Specifying a Contact Name 123

Specifying Location Details 124

Specifying a Webcache Name 124

Setting the Webcache SNMP Community String 124

Displaying Summary Information 125

IV PROBLEM SOLVING

13 PROBLEM SOLVING

Accessing the Webcache via the Console Line 129 Accessing the Webcache via Telnet 130 Solving Web Interface Problems 130 Solving Command Line Interface Problems 133 Solving Webcache Performance Problems 134

VAPPENDICES AND INDEX

A SAFETY INFORMATION

Important Safety Information 140 Consignes importantes de sécurité 142 Wichtige Sicherheitsinformationen 144

B CABLE SPECIFICATIONS AND PIN-OUTS

Cable Specifications 147 Pin-outs 148

Null-Modem Cable 148 PC-AT Serial Cable 148 Modem Cable 149 RJ-45 Pin Assignments 149

C TECHNICAL SPECIFICATIONS

D TECHNICAL SUPPORT

Online Technical Services 153

World Wide Web Site 153 3Com Knowledgebase Web Services 153

3Com FTP Site 154 Support from Your Network Supplier 154 Support from 3Com 154

Returning Products for Repair 156

GLOSSARY

INDEX

3COM END USER SOFTWARE LICENSE AGREEMENT

GNU GENERAL PUBLIC LICENSE VERSION 2, JUNE 1991

REGULATORY NOTICES

ABOUT THIS GUIDE

This guide provides all the information you need to install and use a SuperStack Webcache and outlines how to use those features to optimize the performance of the Webcache.

This guide is intended for the system or network administrator who is responsible for installing, configuring and managing the network. It assumes a basic working knowledge of local area network (LAN) and wide area network (WAN) operations.

If release notes are shipped with your product and the information there differs from the information in this guide, follow the instructions in the release notes.

Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format (PDF) or HTML on the 3Com World Wide Web site:

http://www.3com.com/

3 Webcache 1000/3000. It also describes the features of the

12 ABOUT THIS GUIDE

Conventions Table 1 and Table 2 list conventions that are used throughout this guide.

Tab 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

Warning Information that alerts you to potential personal injury

Tab l e 2 Text Conventions

Convention Description

Screen displays This typeface represents information as it appears on the

Syntax The word “syntax” means that you must evaluate the syntax

Commands The word “command” means that you must enter the

The words “enter” and “type”

Keyboard key names If you must press two or more keys simultaneously, the key

(continued)

potential damage to an application, system, or device

screen.

provided and then supply the appropriate values for the placeholders that appear in angle brackets. Example:

To change your password, use the following syntax:

system password <password>

In this example, you must supply a password for <password>.

command exactly as shown and then press Return or Enter. Commands appear in bold. Example:

To reboot the Webcache, enter the following command:

system control reboot

When you see the word “enter” in this guide, you must type something, and then press Return or Enter. Do not press Return or Enter when an instruction simply says “type.”

names are linked with a plus sign (+). Example:

Press Ctrl+Alt+Del

Tab l e 2 Text Conventions (continued)

Convention Description

Words in italics Italics are used to:

■ Emphasize a point.

■ Denote a new term at the place where it is defined in the

text.

■ Identify menu names, menu commands, and software

button names. Examples: From the Help menu, select Contents. Click OK.

Documentation Comments

In addition to this Guide, the Webcache 1000/3000 documentation set includes the following documents:

■ Webcache 1000/3000 Online Help

This online help system contains information about the Web interface operations that enable you to manage the Webcache. It contains an explanation for each operation and the available parameters. You can access it by clicking Help on any of the Web interface screens.

■ Webcache 1000/3000 Release Note

These notes provide information about the current software release, including new features, modifications, and known problems.

There are other publications you may find useful, such as:

■ Documentation accompanying 3Com Network Supervisor. This is

supplied on the CD-ROM that accompanies the Webcache.

Your suggestions are very important to us. They will help make our documentation more useful to you. Please e-mail comments about this document to 3Com at:

pddtechpubs_comments@3com.com

Please include the following information when contacting us:

■ Document title

■ Document part number (on the title page)

14 ABOUT THIS GUIDE

■ Page number (if appropriate)

Example:

■ SuperStack 3 Webcache 1000/3000 User Guide

■ Part number: DUA1611-5AAA01

■ Page 25

Please note that we can only respond to comments and questions about 3Com product documentation at this e-mail address. Questions related to technical support or sales should be directed in the first instance to your network supplier.

Product Registration

You can now register your SuperStack 3 Webcache on the 3Com Web site:

http://support.3com.com/registration/frontpg.pl

GETTING STARTED

Chapter 1 Introducing the Webcache

Chapter 2 Installing the Webcache

Chapter 3 Configuring Web Browsers

INTRODUCING THE WEBCACHE

This chapter contains introductory information about the Webcache 1000/3000 and how it can be used in your network. It covers summaries of hardware and software features and also the following topics:

■ What is the Webcache?

■ The Webcache and 3Com Network Supervisor

■ Webcache — Front View Detail

■ Webcache — Rear View Detail

■ Default Settings

What is the Webcache?

The SuperStack® 3 Webcache 1000 and 3000 are high-performance, easily configurable webcache appliances. They offer the following benefits to your network:

■ Reduced Network Traffic

The Webcache locally stores frequently accessed Web content and quickly serves it to the end user on demand. This reduces the amount of traffic on the WAN, providing significant cost benefits by reducing the bandwidth requirement on expensive WAN links.

■ Reduced Web Latency

The end user receives Web content more quickly and with greater quality of service if it is served from a local, high-speed Webcache than if it is served from the Internet. Web object requests that have to travel over long distances are limited to the speed and capacity of the slowest link in the path. A Webcache that is closer to the client machines reduces the potential for slow links and dropped data packets.

18 CHAPTER 1: INTRODUCING THE WEBCACHE

■ Smoother Traffic Flow

Traffic surges can stress your network and server. The Webcache can

help smooth out network traffic and reduce delays in serving Web

content. As more users request the same Web content, it becomes

more likely that the content will be stored in the Webcache, and in

turn the Webcache becomes more effective at eliminating upstream

traffic.

■ Controlled Web Access

The Webcache allows you to control which client machines in your

network can access the Internet, and which Web sites can be

accessed. Access Logs show you who has used the Internet and where

they have been.

The Webcache and 3Com Network Supervisor

The latest version of 3Com Network Supervisor is supplied on the CD-ROM that accompanies the Webcache. 3Com Network Supervisor provides powerful, intuitive network management for small to medium enterprise networks. It automatically discovers network devices and reports network activity, stress monitoring and performance metrics for network managers. This information helps to provide the most efficient, cost-effective use of network resources.

3Com Network Supervisor offers the following support:

■ If your 3Com Network Supervisor management station is located on

the LAN, it discovers the Webcache automatically and displays it on

the topology map.

■ The topology map indicates that the Webcache is a 3Com Webcache

and uses a caching icon to represent it.

■ Double-clicking on the caching icon launches the Web interface of the

Webcache.

Webcache — Front View Detail 19

Webcache — Front View Detail

Cache Storage

Status LED(s)

Link Status

LED(s)

Cache StorageStatus

Link Status

LEDs Table 3 lists LEDs visible on the front of the Webcache, and how to read

Figure 1 Webcache — Front View

Activity LED

Power/Self

test LED

LANLANLAN WAN

Activity

Power/Selftest

CacheStorage Status

green = ok yellow = failed

Link Status

green = 100 Mbps yellow = 10 Mbps

Webcache 3000

3C16116

SuperStack 3

The above illustration shows a Webcache 3000. The Webcache 1000 contains a single Cache Storage Device and therefore has one Cache Storage Status LED on the front panel. The Webcache 3000 contains two Cache Storage Devices and can also be upgraded with a third device in the future; therefore it has three Cache Storage Status LEDs.

their status according to color. For information on using the LEDs for problem solving, see “Solving Problems Indicated by LEDs” on page 32.

Tab l e 3 LED Behavior

LED Color Indicates

Cache Storage Status LED(s)

Green The cache storage device is present and operating normally. Yellow The cache storage device has failed. Off The cache storage device is not present.

Link Status LEDs

Green A Fast Ethernet speed (100 Mbps) link is present, and the port

is enabled.

Yellow An Ethernet speed (10 Mbps) link is present, and the port is

enabled.

Off No link is present.

(continued)

20 CHAPTER 1: INTRODUCING THE WEBCACHE

LED Color Indicates

Activity LED

Green flashing The cache is active and caching is occurring. Off The cache is not active. This is normal behavior for an idle

Power/Self test LED

Green The Webcache is powered-up and operating normally. Green flashing The Webcache is either initializing or performing a software

Yellow The Webcache is powered-up but is not caching - a failure has

Off The Webcache is not powered-up. This may indicate a power

Webcache.

upgrade.

occurred.

failure.

Webcache — Rear View Detail

Power Socket The Webcache automatically adjusts its power setting to any supply

Console Port The console port allows you to connect a terminal, terminal emulator or

Figure 2 Webcache — Rear View

WARNING: WAN and LAN 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, Switches or Routers to these sockets.

Either shielded or unshielded data cables with shielded or unshielded jacks can be connected to these data sockets.

voltage in the range 90-240 VAC.

modem and perform remote or local out-of-band management. The

Webcache — Rear View Detail 21

console port uses a standard null-modem cable and is set to 9600 baud, 8 data bits, no parity and 1 stop bit.

WAN Port The WAN port is an auto-negotiating 10BASE-T/100BASE-TX RJ-45 port.

It is used to connect the Webcache to the network in an inline deployment environment.

CAUTION: The Webcache does not support inline deployment in Version

1.0. You should not connect network cabling to the WAN port.

LAN Port The LAN port is an auto-negotiating 10BASE-T/100BASE-TX RJ-45 port. It

is used to connect the Webcache to the network in either Proxy or Transparent deployment environments. Web network traffic travels to and from the Webcache via the LAN port. For more information, see “Deploying the Webcache in Your Network” on page 33.

You must connect the LAN port to your network using an appropriate network cable. For more information, see the “Cable Specifications and Pin-outs” appendix on page 147.

WAN and LAN Port

LEDs

Figure 3 Webcache — WAN and LAN Port LEDs

Table 4 lists LEDs visible on the rear of the Webcache, and how to read their status according to color. For information on using the LEDs for problem solving, see “Solving Problems Indicated by LEDs” on page 32.

22 CHAPTER 1: INTRODUCING THE WEBCACHE

Tab l e 4 LED Behavior

LED Color Indicates

Port Activity LED

Green On A link is present. Green Flashing Packets are being transmitted/received on the port. Green Off No link is present.

Link Speed LED

Yellow On A Fast Ethernet speed (100 Mbps) link is present. Yellow Off An Ethernet speed (10 Mbps) link is present.

The Link Speed LED does not change its state if the link is broken. It remains in its current state until a new link is established. Therefore Green Off, Yellow On indicates that no link is present and that the link was previously 100Mbps. It does not indicate that a 100Mbps link is still present.

Default Settings Table 5 shows the factory default settings for the Webcache:

Tab l e 5 Default Settings

Feature Webcache 1000/3000 Port Speed 10BASE-T/100BASE-TX Mbps ports are

auto-negotiated

Duplex Mode 10BASE-T and 100BASE-TX ports are auto-negotiated Flow Control Enabled with auto-negotiation in full duplex Console Port 9600 Baud, 8 data bits, no parity, 1 stop bit, no flow

IP Address 192.168.1.253 non-broadcast address Subnet Mask 255.255.255.0

Domain Name System (DNS) Server

Default Router 0.0.0.0 Host Name Null

Domain Name System (DNS) Domain

Caching Enabled Caching Mode Proxy

(continued)

control

0.0.0.0

Null

Default Settings 23

Feature Webcache 1000/3000 Caching Port 8080 Access Logging Disabled Web Site Blocking Disabled Web Client Blocking Disabled

Simple Network

Enabled but requires configuration

Management Protocol (SNMP)

Network Time Protocol

Disabled

(NTP)

Web Browser

Disabled

Auto-Configuration Upgrade Notification Enabled but requires configuration

Upgrade

Enabled

Detection/Download Email Notification Events Disabled

Multi Router Traffic

Always Enabled

Grapher (MRTG) Graphs admin Password (none) Password Recovery Enabled

If you initialize the Webcache by selecting System -> Control -> Initialize in the Web interface or by entering

system control initialize in the

Command Line Interface, the following settings are retained to allow you to connect to and manage the Webcache:

■ IP Address

■ Subnet Mask

■ Default Router

■ Domain Name System (DNS) Server

■ Host Name

■ Domain Name System (DNS) Domain

All other settings are reset to the default values shown in Table 5.

24 CHAPTER 1: INTRODUCING THE WEBCACHE

INSTALLING THE WEBCACHE

This chapter contains the information you need to install and set up the Webcache 1000/3000. It covers the following topics:

■ Package Contents

■ Choosing a Suitable Site

■ Rack-Mounting the Webcache

■ The Power-up Sequence

■ Deploying the Webcache in Your Network

■ Setting Up the Webcache for Management

■ Getting Started Wizard Settings

■ Connecting the Webcache to the Live Network

■ Network Configuration Concepts

WARNING: Safety Information. Before installing or removing any components from the Webcache 1000/3000 or carrying out any maintenance procedures, you must read the safety information provided in Appendix A of this guide.

AVERTISSEMENT: Consignes de sécurité. Avant d'installer ou d'enlever tout composant du Webcache 1000/3000 ou d'entamer une procédure de maintenance, lisez les informations relatives à la sécurité qui se trouvent dans l'Appendice A de ce guide.

WARNHINWEIS: Sicherheitsinformationen. Bevor Sie Komponenten aus dem Webcache 1000/3000 entfernen oder dem Webcache 1000/3000 hinzufuegen oder Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen, die in Appendix A (Anhang A) in diesem Handbuch aufgefuehrt sind.

26 CHAPTER 2: INSTALLING THE WEBCACHE

Package Contents ■ Webcache 1000 (3C16115) or Webcache 3000 (3C16116)

■ CD-ROM

■ User Guide (this guide)

■ Release Notes

■ Warranty Card

■ Power Cord

■ Rack-Mounting Kit containing:

■ 2 x Rack Mounting Rails

■ 2 x Rack Mounting Brackets

■ 2 x Adjustable Brackets

■ 2 x Front Plates

■ 16 x Screws

These items are shown in Figure 4 on page 27.

Choosing a Suitable Site

The Webcache must be mounted in a standard 19-inch 4-posted equipment rack, and is suited for use in a wiring closet, an equipment room, a server room, or telecommunications room. A rack-mounting kit is supplied with the Webcache.

CAUTION: Ensure that the ventilation holes in the Webcache are not obstructed.

When deciding where to position the Webcache, ensure that:

■ Cabling is located away from:

■ sources of electrical noise such as radios, transmitters and

broadband amplifiers.

■ power lines and fluorescent lighting fixtures.

■ The Webcache is accessible and cables can be connected easily.

■ Water or moisture cannot enter the case of the Webcache.

■ Air-flow is not restricted around the Webcache. 3Com recommends

that you provide a minimum of 25 mm (1 in.) clearance.

■ Air temperature around the Webcache does not exceed 40 °C (104 °F).

Rack-Mounting the Webcache 27

If the Webcache is installed in a 19-inch rack or closed assembly its local air temperature may be greater than room ambient temperature.

■ The air is as free from dust as possible.

■ The Webcache is installed in a clean, air conditioned environment.

Rack-Mounting the Webcache

The Webcache is 1U high and will fit in most standard 19-inch rack mounts.

CAUTION: The rear of the Webcache must be supported. This is best achieved through the use of a 19-inch 4-posted rack.

CAUTION: Disconnect all cables from the Webcache before continuing.

To rack-mount your Webcache:

1 Place the Webcache the right way up on a hard flat surface, with the

front facing towards you.

2 Locate the Rack-Mounting Kit that is supplied with the Webcache. The

Kit contains the items shown in Figure 4.

Figure 4 The Rack-Mounting Kit Contents

16 x

Screws

Front Plates

Rack-Mounting

Rack-Mounting Rails

Brackets

Adjustable Brackets

You must use the rails and screws supplied with the Rack-Mounting Kit. Damage caused to the Webcache by using incorrect rails and screws invalidates your warranty.

28 CHAPTER 2: INSTALLING THE WEBCACHE

3 Attach a rack-mounting bracket to each side of your Webcache using 4

of the screws provided for each bracket, as shown in Figure 5.

Figure 5 Fitting a Rack-Mounting Bracket to the Webcache

Rack-Mounting the Webcache 29

4 Use an adjustable bracket to secure a rack-mounting rail to the rear of

your rack as shown in Figure 6. To do this: a Slide the adjustable bracket onto the rack-mounting rail and attach it

using two of the screws provided at a position suitable for your rack.

b Use rack-nuts (not supplied) to attach the rack-mounting rail and

adjustable bracket assembly to the rear of your rack.

Figure 6 Fitting a Rack-Mounting Rail to the Rear of the Rack

30 CHAPTER 2: INSTALLING THE WEBCACHE

5 Attach the rack-mounting rail to the front of the rack. To do this:

a Insert two screws through aligned openings in the front plate, rack

and rack-mounting rail as shown in Figure 7.

b Tighten the screws with a suitable screwdriver.

Figure 7 Fitting a Rack-Mounting Rail to the Front of the Rack

6 Repeat step 4 and step 5 for the other side of the rack.

+ 146 hidden pages