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3Com Webcache 1000 (3C16115), Webcache 3000 (3C16116) manual Problem Solving

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

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136CHAPTER 13: PROBLEM SOLVING

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3Com Webcache 1000 (3C16115), Webcache 3000 (3C16116) manual Problem Solving

Contents

SuperStack Webcache 1000 3C16115 Webcache 3000 3C16116 User GuideUNITED STATES GOVERNMENT LEGEND ENVIRONMENTAL STATEMENTEnd of Life Statement Regulated Materials StatementCONTENTS 2 INSTALLING THE WEBCACHEI GETTING STARTED ABOUT THIS GUIDE4 MANAGING THE WEBCACHE II WEBCACHE FEATURES3 CONFIGURING WEB BROWSERS 7 CONTROLLING AND MONITORING WEB ACCESS SYSTEM TIMESECURITY 8 SYSTEM EVENTS10 SYSTEM DIAGNOSTICS 11 SOFTWARE UPGRADE AND INSTALLATION9 PERFORMANCE MONITORING What are System Diagnostics?III COMMAND LINE INTERFACE 12 COMMAND LINE INTERFACEPROBLEM SOLVING PROBLEM SOLVINGSAFETY INFORMATION B CABLE SPECIFICATIONS AND PIN-OUTSGNU GENERAL PUBLIC LICENSE VERSION 2, JUNE REGULATORY NOTICES GLOSSARY INDEX 3COM END USER SOFTWARE LICENSE AGREEMENTReturning Products for Repair Page ABOUT THIS GUIDE Conventions Text ConventionsRelated DocumentationComments Webcache 1000/3000 Online HelpRegistration Productsite Chapter 1 Introducing the Webcache Chapter 2 Installing the Webcache GETTING STARTEDChapter 3 Configuring Web Browsers Page What is the INTRODUCING THE WEBCACHEWebcache? Reduced Network TrafficControlled Web Access The Webcache and3Com Network SupervisorView Detail Webcache - Front Figure 1 Webcache - Front ViewLED Behavior Webcache - Front View DetailThe Webcache is powered-up but is not caching - a failure has The Webcache is not powered-up. This may indicate a powerView Detail Webcache - Rear Figure 2 Webcache - Rear ViewLEDs 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 Choosing a Suitable Package ContentsSite Webcachemounts CAUTION Disconnect all cables from the Webcache before continuing28 CHAPTER 2 INSTALLING THE WEBCACHE Figure 5 Fitting a Rack-Mounting Bracket to the WebcacheFigure 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 thisb Tighten the screws with a suitable screwdriver 6 Repeat step 4 and step 5 for the other side of the rackThe Power-up Powering-up theSequence WebcacheTable 7 Problems Indicated by LEDs Table 6 Power/Self test LED behaviorSuggested Solution Deploying the Webcache in Your Network Proxy Cache34 CHAPTER 2 INSTALLING THE WEBCACHE Transparent Cache Figure 10 Transparent Cache Deploymentas a Proxy Forwarder Figure 11 below Setting Up the Webcache for Management Example Setting Up Over the Test Network Setting Up Using a Cross-over Cable192.168.1.253 is the default IP address of the Webcache Accessing the Web InterfaceNetscape Navigator version 6 is not supported by the Webcache Interface Problems” on page Setting Up Over the Test NetworkFigure 14 User name and password screen Figure 15 Setting Up Over the Test NetworkSetting Up Through the Console Port Accessing the Command Line Interface Wizard Settings Getting Startedcompleting the Getting Started wizard before you introduce the of the Webcache fit into those of your networkConnecting the Webcache to theLive Network CablesConfiguration NetworkConcepts IP AddressesThe first part identifies the subnet number Host Name Domain Name CONFIGURING WEB BROWSERS 4 Click LAN Settings 5 Tick Use a proxy serverManual explicitly direct its Web requests to the WebcacheProxy Auto 4 Select Manual Proxy ConfigurationFile Scripts Use a backup Webcache if the first one fails Bypass the Webcache for plain host names1 Log in to the Web interface 2 Click Device View on the Toolbar names which do not contain dots, commonly used for Intranet sites e.g4 Select Automatic Proxy Configuration 4 Click LAN Settings 5 Tick Use automatic configuration script52 CHAPTER 3 CONFIGURING WEB BROWSERS first tries to connect to the server. The delay is caused by the Web without delays caused by WPADWeb Proxy Auto-DiscoveryClick LAN Settings Tick Automatically detect settingsWeb Proxy Auto-DiscoveryWEBCACHE FEATURES Page Management MANAGING THE WEBCACHESoftware Interfaces Default User The admin user name is case-sensitiveLogging in as a Interface192.168.1.253 is the default IP address of the Webcache Accessing the Web InterfaceUnderstanding the Figure 18 The Web Interface Web Interface The BannerThe Banner The ToolbarThe Toolbar The Summary ViewThe Device View The Help ViewDevice Mimic Console Port HotspotLAN Port Hotspot Unit HotspotWeb Client Blocking Web Site Blocking Save Configuration Notepad Device SummarySymbolBehavior 64 CHAPTER 4 MANAGING THE WEBCACHEThe Information Areawindow. It contains information about the managed Webcache If the Summary View is currently selected, a table is displayed which66 CHAPTER 4 MANAGING THE WEBCACHE SYSTEM TIME Network Time Protocol?Choosing a Protocol ServerConfiguring the Configuration command in the Web interfaceProtocol System Time70 CHAPTER 5 SYSTEM TIME Passwords? Setting PasswordsCAUTION To prevent unauthorized access and configuration of the 6 SECURITYWhat is Password Recovery?Password Recovery password is automatically set to the default for the admin userPassword Recovery Performing74 CHAPTER 6 SECURITY WEB ACCESS CONTROLLING AND MONITORING4 Check Enable Web Site Blocking Site BlockingDomain Name Rules Example2 Select System - Caching - Customize Response in the Navigation Tree 78 CHAPTER 7 CONTROLLING AND MONITORING WEB ACCESS Client BlockingExample What is Access Blocking to control access to the Internet, you should ensure that Gosee “Proxy Auto Configuration PAC File Scripts” on page on the standard Squid access log format and can be analyzed usingLogging 3 Select System - Caching - View Access Log in the Navigation Tree Access LogsAnalyzing the 82 CHAPTER 7 CONTROLLING AND MONITORING WEB ACCESS SYSTEM EVENTS Notification4 Check Enable Email Notifcation of System Events A new software upgrade is availableA software upgrade has succeeded A software upgrade has failed The Webcache has failed its Power On Self TestSNMP Traps Traps The community string of the network management station is set toWhat is Performance monitoring is always enabled you cannot turn it offPERFORMANCE MONITORING Monitoring?Hit and Miss Rate % Bandwidth Saving %Request Rate sec-1 System Hit and Miss Latencies msecThroughput Kbits/sec CPU Load %Disk Activity sec Network Packets secNew TCP Connection sec DNS Lookups secSYSTEM DIAGNOSTICS Diagnostics?What are System Pinging OtherTracing IP AddressesYou can interrupt a PING request at any time by clicking Stop Performing a TraceYou can interrupt a trace route request at any time by clicking Stop System LogSystem Log 94 CHAPTER 10 SYSTEM DIAGNOSTICS Special.aspPage 96 CHAPTER 10 SYSTEM DIAGNOSTICS INSTALLATION SOFTWARE UPGRADE ANDUpgrades 2 Select System Control Upgrade Settings in the Navigation TreePerforming a Software Upgrade Performing an Automatically Detected Software UpgradeView Upgrade Version Release Notes Upgrade NowUpgrade Later Discard UpgradePerforming a Manual Software Upgrade Performing a Software UpgradeWhat is a Software Installation?Installation CAUTION Unlike a software upgrade, all of the Webcache’sSaving and ConfigurationsRestoring 104 CHAPTER 11 SOFTWARE UPGRADE AND INSTALLATION ExampleConfiguration earlier software version via a software installation, you can use amatching configuration file to restore the settings Saving a5 Click Restore. The restore process begins 106 CHAPTER 11 SOFTWARE UPGRADE AND INSTALLATIONCOMMAND LINE INTERFACE Chapter 12 Command Line InterfacePage You must use a VT52 or VT100/ANSI compatible terminal emulator Accessing the Command Line InterfaceCOMMAND LINE INTERFACE Accessing the Command Lineconsole port Console PortCommand Line Interface Logging In To the Command Line InterfaceGettingStarted command Logout commandProtocol menu Security menuCommands are not case-sensitive To enter a simple commandTo enter multiple commands To enter commands that require valuesthe Commands A Quick Guide toTo display sub-menus To display parent menusThe Getting Started command allows you to quickly configure or view Getting StartedEnter system name Enter system contactThe date and time are set as soon as you press Return Old passwordEnter new password ExampleCommand Line After the exit, the first key that you press returns you to the loginExiting the Displaying and Changing IP-related Information118 CHAPTER 12 COMMAND LINE INTERFACE Resetting IP Information to Factory Default Settings Displaying and Changing IP-related InformationInformation 120 CHAPTER 12 COMMAND LINE INTERFACEChanging the Admin Passwordno password Displaying andDisplaying and Changing Webcache Information and Functions The Password Recovery feature is enabledEnter new value enable,disable enable Do you wish to continue yes,no noWhat Happens During an Initialization? What Happens During a Reboot?Webcache is initializing, you cannot communicate with it Specifying a Webcache NameSystem Name LocationTime Since Reset ContactSoftware Version Hardware VersionPROBLEM SOLVING Chapter 13 Problem SolvingPage Accessing the Webcache via the Console Line PROBLEM SOLVINGAccessing the Webcache via Telnet Interface ProblemsThe terminal or terminal emulator can no longer access the You cannot access the Webcache using TelnetYou cannot access the Web interface The Web interface responds slowly to commandsThe Proxy Auto Configuration PAC file is ignored by the Web browser The System Time does not update in the Web interfaceSolving Command ProblemsThe Webcache fails to power-up The Command Line Interface responds slowly to commandsNo Web sites can be accessed using the Webcache PerformanceCheck ProblemsSolving Webcache The performance of the Webcache is poor Local domain sites cannot be accessed using the Webcache as a proxy Solving Webcache Performance Problems136 CHAPTER 13 PROBLEM SOLVING APPENDICES AND INDEX Appendix A Safety InformationAppendix B Cable Specifications and Pin-outs Appendix C Technical Specifications Appendix D Technical SupportPage SAFETY INFORMATION Important Safety Power Cord SetThis must be approved for the country where it is used InformationFrance and Peru only U.K. Only†Impédance à la terre Consignes importantes de sécurité Cordon électriqueVous devez mettre l’appareil à la terre à la masse ce groupe Il doit être agréé dans le pays dutilisationConsignes importantes de sécurité Wichtige Sicherheitsinformat ionen NetzsteckerBezeichnung Neutral tragen †Impédance à la terre Wichtige Sicherheitsinformationen146 APPENDIX A SAFETY INFORMATION CABLE SPECIFICATIONS AND PIN -OUTSCategory CategoryNull-Modem Cable Pin-outsPC-AT Serial Cable Signal Modem Cable 9-pin to RS-232 25-pinPin Number Function150 APPENDIX B CABLE SPECIFICATIONS AND PIN-OUTS TECHNICAL SPECIFICATIONS 152 APPENDIX C TECHNICAL SPECIFICATIONS SNMP protocol RFC MIB-II RFC Interface MIB RFCRemote Monitoring MIB RFC Telnet RFCServices ServicesOnline Technical World Wide Web SiteHostname ftp.3com.com Password your Internet e-mail address154 APPENDIX D TECHNICAL SUPPORT Support from 3Com CountryTelephone Number CountryTelephone NumberEurope, Middle East and AfricaTo obtain an authorization number, call or fax Returning Products for Repair U.S.A. and CanadaNET 3Com 1 408 326158 APPENDIX D TECHNICAL SUPPORT GLOSSARY Ethernet See MAC addressFast Ethernet full duplexLAN port latencyline speed MRTG162 GLOSSARY that communicate as if they are on the same physical LAN 164 GLOSSARY INDEX Page Page 168 INDEX Page 170 INDEX IMPORTANT Read Before Using This Product 3COM END USER SOFTWARE LICENSE AGREEMENTGNU 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 Copyright C 19yy name of author one line to give the programs name and a brief idea of what it doessignature of Ty Coon, 1 April Ty Coon, President of Vice How to Identify and Resolve Radio-TV Interference Problems REGULATORY NOTICESFCC STATEMENT INFORMATION TO THE USER