HP SuperStack 3 Load Balancer Appliance User Manual

SuperStack® 3

Server Load Balancer Server Load Balancer Plus

User Guide

3C16120 3C16121

http://www.3com.com/

Part No. 990-0049-00 Published June 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 in the hard copy documentation.

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 is a trademark of 3Com Corporation.

Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Novell and NetWare are registered trademarks of Novell, Inc. 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.

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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.

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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.

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CONTENTS

ABOUT THIS GUIDE

Conventions 8 Related Documentation 9 Product Registration 9 Documentation Comments 9

1 INTRODUCING THE SERVER LOAD BALANCER

About the Server Load Balancer 12

Summary of Hardware Features 12 Summary of Software Features 12

Server Load Balancer — Front View Detail 13

Ports 13 Console Port 13 LEDs 14

Server Load Balancer — Rear View Detail 15

Unit Information Label 15 Power Socket 15 Advanced Redundant Power System Socket 15

Downloading 3Com Network Supervisor 16

2 INSTALLING THE SERVER LOAD BALANCER

Package Contents 18 Choosing a Suitable Site 18 Rack-mounting 19 Choosing the Correct Cables 20 Placing Units On Top of Each Other 20 The Power-up Sequence 21

Powering-up 21

Solving Problems Indicated by LEDs 22

3 SETTING UP FOR MANAGEMENT

Methods of Managing the Server Load Balancer 24 Assigning an IP Address 24

4 WORKING WITH THE WEB INTERFACE

Choosing a Browser 28

Installing the JRE for Microsoft Internet Explorer 28 Installing the JRE for Netscape Navigator 29

Accessing the Web Interface 30

Exiting the Web interface 30

Using the Web Interface 31

Summary View 32 Device View 33 Logical View 35 Help View 37

Setting up SNMP Management 38

Specifying Community Strings 38 Modifying a Trap Address 38

Upgrading Operating Software 39

5 CONFIGURING NON-REDUNDANT SERVER LOAD BALANCING

Server Load Balancing Configuration Example 42 Configuring for Non-redundant Server Load Balancing 43

6 CONFIGURING REDUNDANT SERVER LOAD BALANCING

Redundant Server Load Balancing Configuration Example 46 Configuring for Active-Passive Redundancy 47 Configuring for Active-Active Redundancy 49

Active-Active Device Allocation 51

Setting Redundancy Settings 51

7 CONFIGURING CACHE REDIRECTION

Cache Redirection Configuration Example 54 Defining a Cache Subnet 55

Non-redundant Configuration 55

Redundant Configuration 56 Adding a Cache 57 Assigning Caches to Services 57

Showing Status and Deleting the Cache 58 Creating a Cache Profile (Optional) 58

8 CONFIGURING FOR LOAD BALANCING

Defining a Server Subnet 62 Changing Lan Port Roles 63 Adding a Server 64 Adding a Service 65 Assigning Servers to Service 66

Showing Status and Deleting the Server 66

Assigning Server to Services (Advanced) 67 Adding a User Group 68

Adding IP Address Ranges to User Groups 68

Accessing Permissions 69 Creating a Balance Profile (Optional) 69 Modifying Security Filters (Attack Mitigation) 72

Modifying Security Filters 72

Modifying User Access 73

A SAFETY INFORMATION

Important Safety Information 76 L’information de Sécurité Importante 78 Wichtige Sicherheitsinformationen 80

B TECHNICAL SPECIFICATIONS AND PIN-OUTS

Server Load Balancer Specifications 83 Console Port Cable 84 PC-AT Serial 84

C TECHNICAL SUPPORT

Online Technical Services 85

World Wide Web Site 85

3Com Knowledgebase Web Services 85

3Com FTP Site 86 Support from Your Network Supplier 86 Support from 3Com 87 Returning Products for Repair 89

INDEX

3COM CORPORATION LIFETIME LIMITED WARRANTY

REGULATORY NOTICES

ABOUT THIS GUIDE

This guide provides all the information you need to install and use a SuperStack Server Load Balancer Plus (3C16121) to perform server load balancing, both non-redundant and redundant, and cache redirection.

The guide is intended for use by network administrators who are responsible for installing and setting up network equipment.

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 Server Load Balancer (3C16120) or the SuperStack 3

8 ABOUT THIS GUIDE

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

Ta b le 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

Ta b le 2 Text Conventions

Convention Description

boldface

Screen displays This typeface represents information as it appears on the

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

The words “enter” and “type”

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

Words in italics Italics are used to:

potential damage to an application, system, or device.

injury.

This typeface represents user input. Example:

At the login: prompt, enter

admin.

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>. 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

■ 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.

Product Registration

Documentation Comments

In addition to this guide, the documentation set includes the following:

■ Release Notes (PDF format)

These notes provide information about the current software release, including new features, modifications, and known problems. These release notes are available in PDF format and are accessible from the 3Com web site.

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

■ Documentation accompanying the Advanced Redundant Power

System.

■ Documentation accompanying the 3Com® Network Supervisor.

You can register your SuperStack 3 Server Load Balancer on the 3Com Web site to receive up-to-date information on your product:

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

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 commenting:

■ Document title

■ Document part number (on the title page)

■ Page number (if appropriate)

Example:

■ SuperStack 3 Server Load Balancer and Server Load Balancer Plus User

Guide

■ Part Number 990-XXXX-XX

■ Page 21

10 ABOUT THIS GUIDE

INTRODUCING THE SERVER LOAD BALANCER

This chapter contains introductory information about the SuperStack® 3 Server Load Balancer and the SuperStack 3 Server Load Balancer Plus. It covers summaries of the following topics:

■ About the Server Load Balancer

■ Server Load Balancer — Front View Detail

■ Server Load Balancer — Rear View Detail

■ Downloading 3Com Network Supervisor

Unless otherwise noted, the information in this chapter applies to both the Server Load Balancer and the Server Load Balancer Plus.

12 CHAPTER 1: INTRODUCING THE SERVER LOAD BALANCER

About the Server Load Balancer

Summary of

Hardware Features

Summary of Software

Features

The SuperStack® 3 Server Load Balancer and Server Load Balancer Plus provide support for connecting multiple high-performance servers to a Gigabit backbone and providing server load balancing, cache redirection and security functionality.

Table 3 summarizes the hardware features that are supported in both models of the Server Load Balancer.

Ta b le 3 Hardware Features

Server Load Balancer

Feature

Server Load Balancer Plus

Memory ■ 64 MB for Server Load Balancer Plus

■ 32 MB for Server Load Balancer

12 10/100 LAN Ports Supported 2 Gigabit Ethernet Ports Supported

SuperStack 3 Architecture ■ Connects to a SuperStack 3 Advanced

Redundant Power System (ARPS)

■ Installs in a 19-inch rack or stand-alone

mounting

Table 4 summarizes the software features that are supported in both models of the Server Load Balancer.

Ta b le 4 Software Features

Server Load Balancer

Feature

Server Load Balancer Plus

Algorithms ■ Round Robin

■ Weighted Round Robin

■ Least Connections

■ Quickest Last Response

■ Quickest Average Response

■ Weighted Percentage

Port Trunking (Etherchannel) Supported

Up to 256 servers Supported TCP/IP Sessions ■ 16,000 for the Server Load Balancer

■ 128,000 for the Server Load Balancer Plus

Persistence Modes ■ Source IP

■ Secure Socket Layer (SSL) Session ID

■ Cookie

Server Load Balancer — Front View Detail 13

Ta b le 4 Software Features

Server Load Balancer

Feature

Server Load Balancer Plus

Cache Redirection ■ Transparent mode

■ Proxy mode

DoS Protection Supported

Redundant Failover Modes ■ Primary/Secondary

■ Active/Active

Management Web interface, command line interface, and

SNMP supported

Server Load Balancer — Front View Detail

10BASE-T/100BASE-TX Ports

Ports The Server Load Balancer and Server Load Balancer Plus have twelve

Console Port The console port allows you to use a terminal or serial PC connector to

Figure 1 Server Load Balancer — front view

1413 1413

Power Self-Test LED Power LED

1000BASE-SX

1000BASE-SX Ports

Console Port

1 2 3 4 5 6 7 8 9 121110 1 2 3 4 5 6 7 8 9 121110

10BASE-T/100BASE-TX

Port Status LEDs

dedicated 10BASE-T/100BASE-TX ports and two 1000BASE-SX ports.

access the command line interface (CLI). The CLI allows you to assign the IP address to the Service Load Balancer and provides basic configuration capabilities. For console port pin-out information, see Appendix B.

14 CHAPTER 1: INTRODUCING THE SERVER LOAD BALANCER

LEDs Table 5 lists LEDs visible on the front of the Server Load Balancer, and how

to read their status according to color.

Ta b le 5 LED Behavior

LED Color Indicates

Power/Self Test LED

Yel low The Server Load Balancer has failed its Power On Self

Yellow flashing The Server Load Balancer is running POST.

Off No fault has been detected.

Power LED

Green The Server Load Balancer is receiving power. Green flashing The Server Load Balancer is receiving power and

Off The Server Load Balancer is not receiving power.

10/100BASE-T Port Status LEDs

Packet Yel low Packets are being transmitted/received on the port.

Off No packets are being transmitted/received on the port.

Status Green A link is present and the port is enabled.

Green flashing The port is disabled.

Off No link is present.

1000BASE-SX Port Status LEDs

Packet Yel low Packets are being transmitted/received on the port.

Off No packets are being transmitted/received on the port.

Status Green A high speed (1000 Mbps) link is present, and the port

Green flashing A high speed (1000 Mbps) port is disabled. Off No link is present.

Test (POST) or a failure is detected in the runtime.

downloading new operating software.

is enabled.

Server Load Balancer — Rear View Detail 15

Server Load Balancer — Rear View Detail

Unit Information Label

Power Socket

Unit Information

Label

Figure 2 Server Load Balancer — rear view

Laser warning and

Supply warning Label

Redundant Power System Socket

The labels on the rear of the unit show the following:

■ The 3Com product name of the Server Load Balancer

■ The 3Com 3C number of the Server Load Balancer

■ The unique MAC address (Ethernet address) of the Server Load

Balancer

■ The serial number of the Server Load Balancer

Power Socket The Server Load Balancer automatically adjusts its power setting to any

Advanced Redundant Power System Socket

You may need this information for fault reporting purposes.

supply voltage in the range 90-240 VAC.

To protect against internal power supply failure, you can use this socket to connect a Advanced Redundant Power System (ARPS) (part number 3C16075) to the Server Load Balancer. For more information on the Advanced Redundant Power System, see the documentation shipped with the power system.

For normal redundancy, the unit requires one Type 3 Power Module (part number 3C16075).

For full redundancy, the unit requires two Type 3 Power Modules combined using a Type 3 Y-Cable (part number 3C16077).

16 CHAPTER 1: INTRODUCING THE SERVER LOAD BALANCER

CAUTION: The Server Load Balancer can only use a SuperStack Advanced Redundant Power System output.

WARNING: If you are connecting the Server Load Balancer to a ARPS Type 3 Power Module, read the Safety Information section in the documentation shipped with the power system.

CAUTION: The Server Load Balancer has no ON/OFF switch; the only method of connecting or disconnecting main power is by connecting or disconnecting the power cord.

Downloading 3Com Network Supervisor

You can download 3Com Network Supervisor Version 3.0 from the following Web address:

http://www.3com.com/tns

Network Supervisor is a powerful, intuitive network management application for small to medium enterprise networks.

Network Supervisor automatically discovers up to 1500 network devices and shows devices and connections on a graphical display. Network managers can view network activity, monitor stress and set thresholds and alerts. This information helps to provide the most efficient, cost-effective use of network resources.

Version 3.0 adds significant extra functionality designed to detect network inefficiency and optimize network performance. Features include support for related and recurring events, user definable reports, auto-alerting using pager or SMS messages and simple updates from the 3Com Web site.

3Com Network Supervisor offers Telnet and Web device management.

INSTALLING THE SERVER LOAD BALANCER

This chapter contains the information you need to install and set up the Server Load Balancer. It covers the following topics:

■ Package Contents

■ Choosing a Suitable Site

■ Rack-mounting

■ Placing Units On Top of Each Other

■ The Power-up Sequence

■ Solving Problems Indicated by LEDs

WARNING: Safety Information. Before installing or removing any components from the Server Load Balancer 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 Server Load Balancer 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 Server Load Balancer entfernen oder dem Server Load Balancer hinzufuegen oder Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen, die in Appendix A (Anhang A) in diesem Handbuch aufgefuehrt sind.

18 CHAPTER 2: INSTALLING THE SERVER LOAD BALANCER

Package Contents Your shipping container should contain the following items:

■ Server Load Balancer (3C11620)

or Server Load Balancer Plus (3C11621)

■ User Guide (this guide)

■ Power Cord

■ 2 x mounting brackets

■ 6 x screws

■ 4 x rubber feet

Choosing a Suitable Site

The Server Load Balancer is suited for use where it can be mounted in a standard 19-inch equipment rack, or free-standing. A rack-mounting kit, containing two mounting brackets and six screws is supplied with the unit.

CAUTION: Ensure that the ventilation holes are not obstructed.

When deciding where to position the Server Load Balancer, ensure that:

■ Cabling is located away from sources of electrical noise such as radios,

transmitters and broadband amplifiers.

■ Cabling is located away from power lines and fluorescent lighting

fixtures

■ The Server Load Balancer is accessible and cables can be connected

easily.

■ Water or moisture cannot enter the case of the Server Load Balancer.

■ Air-flow is not restricted around the Server Load Balancer or through

the vents in the side of the Server Load Balancer. 3Com recommends

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

■ The air is as free from dust as possible.

■ No more than four Server Load Balancer units are placed on top of

one another, if the units are free-standing.

■ Temperature operating limits are not exceeded. It is recommended

that the unit is installed in a clean, air conditioned environment.

■ Ensure there is adequate clearance at the front of the unit to ensure

that the fibers are not damaged as they have a restricted bend radius.

Rack-mounting 19

Rack-mounting The Server Load Balancer is 1.5U and fits in most standard 19-inch racks.

However, if you are connecting the Server Load Balancer to a ARPS Type 3 power module, a runner, shelf or tray is recommended to support the additional weight. You will need to allow a 2U space within the rack for each Server Load Balancer.

WARNING: The rack-mount kits alone are not sufficient to support the weight of the Server Load Balancer when attached to an ARPS power module. It is recommended that you use a runner, shelf or tray to support the total weight. The rack mount kits must not be used to suspend the Server Load Balancer from under a table or desk, or attach it to a wall.

CAUTION: You must use a full depth shelf or support that will not obstruct the air flow through the side panels of the Server Load Balancer.

CAUTION: Disconnect all cables from the Server Load Balancer before continuing. Remove all self adhesive pads from the underside of the Server Load Balancer if they have been fitted.

To rack-mount your Server Load Balancer:

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

facing towards you.

2 Locate a mounting bracket over the mounting holes on one side of the

unit, as shown in Figure 3.

Figure 3 Fitting a bracket for rack-mounting

20 CHAPTER 2: INSTALLING THE SERVER LOAD BALANCER

You must use the screws supplied with the mounting brackets. Damage caused to the unit by using incorrect screws invalidates your warranty.

3 Insert the three screws and tighten with a suitable screwdriver.

4 Repeat steps 2 and 3 for the other side of the unit.

5 Insert the unit into the 19-inch rack and secure with suitable screws (not

provided). Ensure that ventilation holes are not obstructed.

6 Connect network cabling.

Choosing the Correct Cables

Placing Units On Top of Each Other

The 1000BASE-FX fiber optic LAN ports (Ports 13 and 14) on the Server Load Balancer use SC connectors. The 10BASE-T/100BASE-TX copper LAN ports (Ports 1 through 12) use RJ45 connectors.

Table 6 explains cables to use before connecting a device to the copper ports.

Ta b le 6 Cabling for Copper Ports

Device to Connect: Use this Cable:

Another Server Load Balancer, a network switch or router

End Station (such as a server or a PC)

Cables are not supplied by 3Com.

Crossover cable

Straight-through cable

If the units are free-standing, up to four units can be placed one on top of the other.

If you are placing units one on top of the other, you must use the self-adhesive rubber feet supplied. Apply the feet to the underside of each unit, sticking one in the marked area at each corner. Place the units on top of each other, ensuring that the feet of the upper unit line up with the recesses of the lower unit.

The Power-up Sequence 21

The Power-up Sequence

Powering-up To power-up the Server Load Balancer, complete the following steps:

The following sections describe how to get your Server Load Balancer powered-up and ready for operation.

WARNING: If you are connecting the Server Load Balancer to a ARPS Type 3 Power Module, read the Safety Information section in the documentation shipped with the power system.

1 Plug the power cord into the power socket at the rear of the unit.

2 Plug the other end of the power cord into your power outlet.

The unit powers-up and runs through its Power On Self Test (POST), which takes approximately 10 seconds.

During the POST, all ports on the Server Load Balancer are disabled and the LEDs light in a rapid sequence. See “LEDs” on page 14.

When the POST has completed, check the Power/Self Test LED to make sure that your Server Load Balancer is operating correctly. See “Solving Problems Indicated by LEDs” on page 22.

22 CHAPTER 2: INSTALLING THE SERVER LOAD BALANCER

Solving Problems Indicated by LEDs

Table 7 contains a list of problems and suggested solutions if the LEDs indicate a problem. For Technical Support information, see Appendix C.

Ta b le 7 Problems Indicated by LEDs

Problem Suggested Solution

The Power LED does not light

On powering-up, the Power/Self Test LED lights yellow

A link is connected and yet the Status LED for the port does not light

Check that the power cable is firmly connected to the relevant unit and to the supply outlet. If the connection is secure and there is still no power, you may have a faulty power cord.

The relevant unit has failed its Power On Self Test (POST) because of an internal problem. Contact your supplier for advice.

Check that:

■ All connections are secure.

■ The devices at both ends of the link are powered-up.

■ The devices at both ends of the link have the same

auto-negotiation setting, i.e. both enabled, or both disabled.

■ The quality of cable is satisfactory.

■ The correct type of cable (crossover or

straight-through) is used.

SETTING UP FOR MANAGEMENT

This chapter explains the management methods used for managing a Server Load Balancer, and details the steps required before you can configure a Server Load Balancer to suit the needs of your network. It covers the following topics:

■ Methods of Managing the Server Load Balancer

■ Assigning an IP Address

24 CHAPTER 3: SETTING UP FOR MANAGEMENT

Methods of Managing the Server Load Balancer

Assigning an IP Address

You can manage a Server Load Balancer using one of the following methods:

■ Web interface management — Each Server Load Balancer has a set of

internal Web pages that allow you to manage the Server Load

Balancer using a Web browser. Using the Web interface is the

preferred method of management.

■ Command line interface management — The Server Load Balancer

offers limited command line interface (CLI) commands to configure

basic parameters, such as the management IP Address.

■ SNMP management — You can manage a Server Load Balancer using

any Network Manager running the Simple Network Management

Protocol (SNMP), such as 3Com Network Supervisor software. SNMP

management is limited and does not allow for full configuration

functionality.

To manage a Server Load Balancer over the network, the Server Load Balancer must be initially configured with the following:

■ An IP address and subnet mask

■ A default route

The CLI provides a series of online instructions that you need to complete the setup process.

To assign an IP address to the Server Load Balancer, complete the following steps:

1 Connect your management station to the console port on the front the

Server Load Balancer. See “Console Port Cable” on page 84.

2 On a Windows® PC, you may use the Hyperterminal program or other

terminal emulator. The correct settings are:

■ Bits per second: 9600

■ Data bits: 8

■ Parity: None

■ Stop bits: 1

■ Flow control: Hardware

Assigning an IP Address 25

3 Hit <Return>. At the login: prompt, enter admin.

The Server Load Balancer provides two levels of access, admin and monitor. The password field contains

blank default login passwords. The

two levels of access are:

■ admin — the user can access and change all manageable

parameters

■ monitor — the user can view all manageable parameters, but

cannot change any parameters

4 At the password: prompt, hit <Return>. The password field contains

a blank default login password. The Welcome to the SLB Setup CLI appears.

CAUTION: The Server Load Balancer does not provide a way to recover a lost password. If you choose to assign a new password, it is suggested you keep note of it in a safe place. If you forget your password, you will be locked out of the unit. If you change the password during the CLI Server Load Balancer setup, this is the password you should use, and not the blank default login password. For Technical Support, see Appendix C.

Welcome to the SLB Setup

Follow the on-screen instructions to complete the setup process.

You may run setup later by typing “setup” at the SEC> prompt. Setup will take you through the following steps: SEC>

1. Set unit ip address

2. Set default route

3. Set clock

4. Set login password

You may use <CR> to skip a step. Enter unit ip in this format: nnn.nnn.nnn.nnn/pp where: nnn.nnn.nnn.nnn is IP address

pp is address prefix

26 CHAPTER 3: SETTING UP FOR MANAGEMENT

5 You are prompted to enter the following information:

a a unit IP address

b a default route

c the local time

d the local date

e the number of desired time zone (1-107 options)

f a new login password

g confirm new login password

6 Once you have completed the setup, exit the CLI.

You are now ready to access the Server Load Balancer Web interface. See “Accessing the Web Interface”on page 30.

WORKING WITH THE WEB INTERFACE

This chapter describes how to access and use the web interface. It covers the following topics:

■ Choosing a Browser

■ Accessing the Web Interface

■ Using the Web Interface

■ Setting up SNMP Management

■ Upgrading Operating Software

28 CHAPTER 4: WORKING WITH THE WEB INTERFACE

Choosing a Browser To display the Web interface correctly, use one of the following Web

browsers:

■ Netscape Navigator® version 4.5 or above.

■ Microsoft® Internet Explorer version 5.0 or above.

For the browser to operate the Web interface correctly, the Java Runtime Environment (JRE) V1.3.0_02 or higher must be installed on your management workstation.

A version of the JRE plug-in for Windows® is provided on the Server Load Balancer. If you do not already have the plug-in installed on your management station, you will be prompted to install it. See either “Installing the JRE for Microsoft Internet Explorer” or “Installing the JRE for Netscape Navigator”.

Installing the JRE for

Microsoft Internet

Explorer

If you are using Microsoft Internet Explorer for your browser and do not have the Java Runtime Environment installed on your management station, the Security Warning window appears. Click Yes and follow the on-line instructions.

Figure 4 Security Warning Window

Choosing a Browser 29

Installing the JRE for

Netscape Navigator

If you are using Netscape Navigator for your browser and do not have the Java Runtime Environment installed on your management station, the Web Interface pages appears.

Figure 5 Web Interface - Netscape

To install the plug-in, complete the following steps:

1 Click on Click here to get the plug-in.

2 The Plug-in Not Loaded window appears. Click Get the plug-in. The

Plug-in Install for Netscape page appears.

3 Click Download Plug-in.The Save As window appears.

4 Save the file to your Desktop.

5 From your desktop, double-click on jre1_3_0.exe.

The Java Runtime Environment is now installed.

30 CHAPTER 4: WORKING WITH THE WEB INTERFACE

Accessing the Web Interface

To access the Web interface over the network, complete the following steps:

1 Ensure that your network is correctly set up for management using the

Web interface and open your Web browser.

2 In the Location field of the browser, enter the URL of the Server Load

Balancer. This must be in the format:

http://nnn.nnn.nnn.nnn/

where nnn.nnn.nnn.nnn is the IP address you assigned in “Assigning an IP Address” on page 24.

When the browser has located the Server Load Balancer, the Enter Network Password window appears.

3 Enter admin in the User Name field.

The Server Load Balancer provides two levels of access, admin and monitor. The password field contains a

blank default login password. The

two levels of access are:

■ admin — the user can access and change all manageable

parameters

■ monitor — the user can view all manageable parameters, but

cannot change any parameters

4 The password field contains a blank default login password. Hit

<Return>.

Exiting the Web

interface

The main Web interface is displayed. See “Using the Web Interface” on page 31.

You can exit the Web interface at any time; to do this, close your Web browser. For security reasons, you should always close your Web browser after a management session.

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