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3Com Webcache 3000 (3C16116) Local domain sites cannot be accessed using the Webcache as a proxy

Models: Webcache 3000 (3C16116) Webcache 1000 (3C16115)

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Solving Webcache Performance Problems 135

Local domain sites cannot be accessed using the Webcache as a proxy

This is caused by an incorrect setting of the DNS domain name on the Webcache. Check the DNS configuration of the Webcache.

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3Com Webcache 3000 (3C16116), Webcache 1000 (3C16115) Local domain sites cannot be accessed using the Webcache as a proxy

Contents

Webcache 1000 3C16115 Webcache 3000 3C16116 User Guide SuperStackRegulated Materials Statement UNITED STATES GOVERNMENT LEGENDENVIRONMENTAL STATEMENT End of Life StatementABOUT THIS GUIDE CONTENTS2 INSTALLING THE WEBCACHE I GETTING STARTEDII WEBCACHE FEATURES 4 MANAGING THE WEBCACHE3 CONFIGURING WEB BROWSERS 8 SYSTEM EVENTS 7 CONTROLLING AND MONITORING WEB ACCESSSYSTEM TIME SECURITYWhat are System Diagnostics? 10 SYSTEM DIAGNOSTICS11 SOFTWARE UPGRADE AND INSTALLATION 9 PERFORMANCE MONITORING12 COMMAND LINE INTERFACE III COMMAND LINE INTERFACEB CABLE SPECIFICATIONS AND PIN-OUTS PROBLEM SOLVINGPROBLEM SOLVING SAFETY INFORMATIONGLOSSARY INDEX 3COM END USER SOFTWARE LICENSE AGREEMENT GNU GENERAL PUBLIC LICENSE VERSION 2, JUNE REGULATORY NOTICESReturning Products for Repair Page ABOUT THIS GUIDE Text Conventions ConventionsWebcache 1000/3000 Online Help RelatedDocumentation CommentsProduct Registrationsite GETTING STARTED Chapter 1 Introducing the Webcache Chapter 2 Installing the WebcacheChapter 3 Configuring Web Browsers Page Reduced Network Traffic What is theINTRODUCING THE WEBCACHE Webcache?Supervisor Controlled Web AccessThe Webcache and 3Com NetworkWebcache - Front View Detail View DetailWebcache - Front Figure 1 Webcache - Front View LED BehaviorWebcache - Rear Figure 2 Webcache - Rear View The Webcache is powered-up but is not caching - a failure hasThe Webcache is not powered-up. This may indicate a power View DetailLEDs 22 CHAPTER 1 INTRODUCING THE WEBCACHE IP Address Subnet Mask Default Router Domain Name System DNS Server 24 CHAPTER 1 INTRODUCING THE WEBCACHE INSTALLING THE WEBCACHE Package Contents Choosing a SuitableSite CAUTION Disconnect all cables from the Webcache before continuing WebcachemountsFigure 5 Fitting a Rack-Mounting Bracket to the Webcache 28 CHAPTER 2 INSTALLING THE WEBCACHEFigure 6 Fitting a Rack-Mounting Rail to the Rear of the Rack 6 Repeat step 4 and step 5 for the other side of the rack 30 CHAPTER 2 INSTALLING THE WEBCACHE5 Attach the rack-mounting rail to the front of the rack. To do this b Tighten the screws with a suitable screwdriverWebcache The Power-upPowering-up the SequenceTable 6 Power/Self test LED behavior Table 7 Problems Indicated by LEDsSuggested Solution Proxy Cache Deploying the Webcache in Your NetworkTransparent Cache Figure 10 Transparent Cache Deployment 34 CHAPTER 2 INSTALLING THE WEBCACHEas a Proxy Forwarder Figure 11 below Setting Up the Webcache for Management Example Setting Up Using a Cross-over Cable Setting Up Over the Test NetworkAccessing the Web Interface 192.168.1.253 is the default IP address of the WebcacheNetscape Navigator version 6 is not supported by the Webcache Figure 15 Setting Up Over the Test Network Interface Problems” on pageSetting Up Over the Test Network Figure 14 User name and password screenSetting Up Through the Console Port Accessing the Command Line Interface of the Webcache fit into those of your network Wizard SettingsGetting Started completing the Getting Started wizard before you introduce theCables Connecting theWebcache to the Live NetworkIP Addresses ConfigurationNetwork ConceptsThe first part identifies the subnet number Host Name Domain Name explicitly direct its Web requests to the Webcache CONFIGURING WEB BROWSERS4 Click LAN Settings 5 Tick Use a proxy server Manual4 Select Manual Proxy Configuration Proxy AutoFile Scripts names which do not contain dots, commonly used for Intranet sites e.g Use a backup Webcache if the first one failsBypass the Webcache for plain host names 1 Log in to the Web interface 2 Click Device View on the Toolbar4 Click LAN Settings 5 Tick Use automatic configuration script 4 Select Automatic Proxy Configuration52 CHAPTER 3 CONFIGURING WEB BROWSERS Auto-Discovery first tries to connect to the server. The delay is caused by the Webwithout delays caused by WPAD Web ProxyAuto-Discovery Click LAN SettingsTick Automatically detect settings Web ProxyWEBCACHE FEATURES Page MANAGING THE WEBCACHE ManagementSoftware Interfaces Interface Default UserThe admin user name is case-sensitive Logging in as aAccessing the Web Interface 192.168.1.253 is the default IP address of the WebcacheThe Toolbar Understanding the Figure 18 The Web Interface Web InterfaceThe Banner The BannerThe Help View The ToolbarThe Summary View The Device ViewUnit Hotspot Device MimicConsole Port Hotspot LAN Port HotspotDevice Summary Web Client Blocking Web Site Blocking Save Configuration Notepad64 CHAPTER 4 MANAGING THE WEBCACHE SymbolBehaviorIf the Summary View is currently selected, a table is displayed which The InformationArea window. It contains information about the managed Webcache66 CHAPTER 4 MANAGING THE WEBCACHE SYSTEM TIME Protocol Server Network TimeProtocol? Choosing aSystem Time Configuring theConfiguration command in the Web interface Protocol70 CHAPTER 5 SYSTEM TIME 6 SECURITY Passwords?Setting Passwords CAUTION To prevent unauthorized access and configuration of thepassword is automatically set to the default for the admin user What is PasswordRecovery? Password RecoveryPerforming Password Recovery74 CHAPTER 6 SECURITY CONTROLLING AND MONITORING WEB ACCESSExample 4 Check Enable Web Site BlockingSite Blocking Domain Name Rules2 Select System - Caching - Customize Response in the Navigation Tree Client Blocking 78 CHAPTER 7 CONTROLLING AND MONITORING WEB ACCESSExample on the standard Squid access log format and can be analyzed using What is AccessBlocking to control access to the Internet, you should ensure that Go see “Proxy Auto Configuration PAC File Scripts” on pageLogging Access Logs 3 Select System - Caching - View Access Log in the Navigation TreeAnalyzing the 82 CHAPTER 7 CONTROLLING AND MONITORING WEB ACCESS Notification SYSTEM EVENTSThe Webcache has failed its Power On Self Test 4 Check Enable Email Notifcation of System EventsA new software upgrade is available A software upgrade has succeeded A software upgrade has failedSNMP Traps The community string of the network management station is set to TrapsMonitoring? What isPerformance monitoring is always enabled you cannot turn it off PERFORMANCE MONITORINGBandwidth Saving % Hit and Miss Rate %Request Rate sec-1 CPU Load % SystemHit and Miss Latencies msec Throughput Kbits/secDNS Lookups sec Disk Activity secNetwork Packets sec New TCP Connection secPinging Other SYSTEM DIAGNOSTICSDiagnostics? What are SystemPerforming a Trace Tracing IPAddresses You can interrupt a PING request at any time by clicking StopSystem Log You can interrupt a trace route request at any time by clicking StopSystem Log Special.asp 94 CHAPTER 10 SYSTEM DIAGNOSTICSPage 96 CHAPTER 10 SYSTEM DIAGNOSTICS SOFTWARE UPGRADE AND INSTALLATION2 Select System Control Upgrade Settings in the Navigation Tree UpgradesPerforming an Automatically Detected Software Upgrade Performing a Software UpgradeDiscard Upgrade View Upgrade Version Release NotesUpgrade Now Upgrade LaterPerforming a Software Upgrade Performing a Manual Software UpgradeCAUTION Unlike a software upgrade, all of the Webcache’s What is a SoftwareInstallation? InstallationConfigurations Saving andRestoring Example 104 CHAPTER 11 SOFTWARE UPGRADE AND INSTALLATIONSaving a Configurationearlier software version via a software installation, you can use a matching configuration file to restore the settings106 CHAPTER 11 SOFTWARE UPGRADE AND INSTALLATION 5 Click Restore. The restore process beginsChapter 12 Command Line Interface COMMAND LINE INTERFACEPage Accessing the Command Line Interface You must use a VT52 or VT100/ANSI compatible terminal emulatorCOMMAND LINE INTERFACE Console Port Accessing theCommand Line console portLogging In To the Command Line Interface Command Line InterfaceSecurity menu GettingStarted commandLogout command Protocol menuTo enter commands that require values Commands are not case-sensitiveTo enter a simple command To enter multiple commandsTo display parent menus the CommandsA Quick Guide to To display sub-menusEnter system contact The Getting Started command allows you to quickly configure or viewGetting Started Enter system nameExample The date and time are set as soon as you press ReturnOld password Enter new passwordDisplaying and Changing IP-related Information Command LineAfter the exit, the first key that you press returns you to the login Exiting the118 CHAPTER 12 COMMAND LINE INTERFACE Displaying and Changing IP-related Information Resetting IP Information to Factory Default Settings120 CHAPTER 12 COMMAND LINE INTERFACE InformationDisplaying and Changing the AdminPassword no passwordDo you wish to continue yes,no no Displaying and Changing Webcache Information and FunctionsThe Password Recovery feature is enabled Enter new value enable,disable enableWhat Happens During a Reboot? What Happens During an Initialization?Webcache is initializing, you cannot communicate with it Webcache Name Specifying aLocation System NameHardware Version Time Since ResetContact Software VersionChapter 13 Problem Solving PROBLEM SOLVINGPage PROBLEM SOLVING Accessing the Webcache via the Console LineYou cannot access the Webcache using Telnet Accessing the Webcache via TelnetInterface Problems The terminal or terminal emulator can no longer access theThe Web interface responds slowly to commands You cannot access the Web interfaceThe System Time does not update in the Web interface The Proxy Auto Configuration PAC file is ignored by the Web browserThe Command Line Interface responds slowly to commands Solving CommandProblems The Webcache fails to power-upPerformanceCheck Problems No Web sites can be accessed using the WebcacheSolving Webcache The performance of the Webcache is poor Solving Webcache Performance Problems Local domain sites cannot be accessed using the Webcache as a proxy136 CHAPTER 13 PROBLEM SOLVING Appendix C Technical Specifications Appendix D Technical Support APPENDICES AND INDEXAppendix A Safety Information Appendix B Cable Specifications and Pin-outsPage SAFETY INFORMATION Information Important SafetyPower Cord Set This must be approved for the country where it is usedU.K. Only France and Peru only†Impédance à la terre Il doit être agréé dans le pays dutilisation Consignes importantes de sécuritéCordon électrique Vous devez mettre l’appareil à la terre à la masse ce groupeConsignes importantes de sécurité Netzstecker Wichtige Sicherheitsinformat ionenWichtige Sicherheitsinformationen Bezeichnung Neutral tragen †Impédance à la terre146 APPENDIX A SAFETY INFORMATION Category CABLE SPECIFICATIONS ANDPIN -OUTS CategoryPin-outs Null-Modem CablePC-AT Serial Cable Function SignalModem Cable 9-pin to RS-232 25-pin Pin Number150 APPENDIX B CABLE SPECIFICATIONS AND PIN-OUTS TECHNICAL SPECIFICATIONS Telnet RFC 152 APPENDIX C TECHNICAL SPECIFICATIONSSNMP protocol RFC MIB-II RFC Interface MIB RFC Remote Monitoring MIB RFCWorld Wide Web Site ServicesServices Online TechnicalPassword your Internet e-mail address Hostname ftp.3com.com154 APPENDIX D TECHNICAL SUPPORT Africa Support from 3ComCountryTelephone Number CountryTelephone Number Europe, Middle East andTo obtain an authorization number, call or fax 1 408 326 Returning Products for RepairU.S.A. and Canada NET 3Com158 APPENDIX D TECHNICAL SUPPORT GLOSSARY full duplex EthernetSee MAC address Fast EthernetMRTG LAN portlatency line speed162 GLOSSARY that communicate as if they are on the same physical LAN 164 GLOSSARY INDEX Page Page 168 INDEX Page 170 INDEX 3COM END USER SOFTWARE LICENSE AGREEMENT IMPORTANT Read Before Using This ProductGNU GENERAL PUBLIC LICENSE VERSION 2, JUNE You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee NO WARRANTY one line to give the programs name and a brief idea of what it does Copyright C 19yy name of authorsignature of Ty Coon, 1 April Ty Coon, President of Vice INFORMATION TO THE USER How to Identify and Resolve Radio-TV Interference ProblemsREGULATORY NOTICES FCC STATEMENT