3Com 3C16116-US User Guide

3Com 3C16116-US - SuperStack 3 Webcache 3000 Manual

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  • 3Com 3C16116-US | User Guide - Page 1
    SuperStack® 3 Webcache 1000 (3C16115) Webcache 3000 (3C16116) User Guide http://www.3com.com/ Part No. DUA1611-5AAA02 Published May 2001
  • 3Com 3C16116-US | User Guide - Page 2
    , or delivered to you in conjunction with, this User Guide. Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may the United States and other countries, licensed exclusively through X/Open Company, Ltd. Netscape Navigator is a registered trademark of
  • 3Com 3C16116-US | User Guide - Page 3
    GUIDE Conventions 12 Related Documentation 13 Documentation Comments 13 Product Registration 14 I GETTING STARTED 1 INTRODUCING THE WEBCACHE What is the Webcache? 17 The Webcache and 3Com Correct Operation of LEDs 32 Solving Problems Indicated by LEDs 32 Deploying the Webcache in Your Network 33
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    Name System 47 Domain Name System Syntax 47 3 CONFIGURING WEB BROWSERS Manual Configuration 49 Proxy Auto Configuration (PAC) File Scripts 50 Web Proxy WEBCACHE Management Software Interfaces 57 Logging in as a Default User 58 Accessing the Web Interface 58 Understanding the Web Interface 60 The
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    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
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    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
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    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
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    Web Interface Problems 130 Solving Command Line Interface Problems 133 Solving Webcache Performance Problems 134 V APPENDICES 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
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    Returning Products for Repair 156 GLOSSARY INDEX 3COM END USER SOFTWARE LICENSE AGREEMENT GNU GENERAL PUBLIC LICENSE VERSION 2, JUNE 1991 REGULATORY NOTICES
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    use those features to optimize the performance of the Webcache. This guide is intended for the system or network administrator who is responsible 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
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    system control reboot The words "enter" and "type" 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." Keyboard key names If you must press two or more keys simultaneously, the
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    OK. In addition to this Guide, the Webcache 1000/3000 documentation problems. There are other publications you may find useful, such as: I Documentation accompanying 3Com Network Supervisor. This is supplied on the CD-ROM that accompanies the Webcache. Your suggestions are very important to us
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    appropriate) Example: I SuperStack 3 Webcache 1000/3000 User Guide I Part number: DUA1611-5AAA01 I 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
  • 3Com 3C16116-US | User Guide - Page 15
    I GETTING STARTED Chapter 1 Introducing the Webcache Chapter 2 Installing the Webcache Chapter 3 Configuring Web Browsers
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    16
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    also the following topics: I What is the Webcache? I The Webcache and 3Com Network Supervisor I Webcache - Front View Detail I Webcache - Rear View Detail links. I Reduced Web Latency The end user receives Web content more quickly and with greater quality of service if it is served from a local,
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    delays in serving Web content. As more users request the same Web content, it support: I If your 3Com Network Supervisor management station is located on the LAN, it discovers the Webcache automatically and displays it on the topology map. I The topology map indicates that the Webcache is a 3Com
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    on the front 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. Table 3 LED Behavior LED Color Indicates Cache Storage Status LED(s) Green The cache storage device is
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    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 Webcache. Power/Self test LED Green The Webcache is powered-up and operating normally.
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    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. information on using the LEDs for problem solving, see "Solving Problems Indicated by LEDs" on page 32.
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    22 CHAPTER 1: INTRODUCING THE WEBCACHE Default Settings Table 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
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    Default Settings 23 Feature Webcache 1000/3000 Caching Port 8080 Access Logging Disabled Web Site Blocking Disabled Web Client Blocking Disabled Simple Network Management Protocol (SNMP) Enabled but requires configuration Network Time Protocol Disabled (NTP) Web Browser Auto-
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    24 CHAPTER 1: INTRODUCING THE WEBCACHE
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    , 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 sécurité qui se trouvent dans l'Appendice A de ce guide. WARNHINWEIS: Sicherheitsinformationen. Bevor Sie Komponenten aus dem Webcache 1000
  • 3Com 3C16116-US | User Guide - Page 26
    THE WEBCACHE Package Contents I Webcache 1000 (3C16115) or Webcache 3000 (3C16116) I CD-ROM I User Guide (this guide) I Release Notes I Warranty Card . I Air-flow is not restricted around the Webcache. 3Com recommends that you provide a minimum of 25 mm (1 in.) clearance. I Air temperature around
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    dust as possible. I The Webcache is installed in a clean, air conditioned environment. Rack-Mounting the The Webcache is 1U high and will fit in most standard 19-inch rack Webcache mounts. CAUTION: The rear of the Webcache must be supported. This is best achieved through the use of a 19-inch
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    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
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    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
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    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-
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    The Power-up Sequence 31 7 Slide the rack-mounting brackets on the sides of the Webcache into the rack-mounting rails. 8 Secure the front of the Webcache to the rack with the captive thumbscrews, as shown in Figure 8. Figure 8 Attaching the Webcache to the Rack 9 Ensure that the ventilation holes
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    power cord. On powering-up, the Power/Self test LED lights yellow The Webcache has failed during its power-up sequence because of an internal problem. Contact your supplier for advice. A link is connected but the Status LED for the port does not light Check that: I All connections are secure
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    . No configuration of the Web browser on each client machine is needed because the Layer 4 device automatically redirects Web requests to the Webcache. CAUTION: 3Com recommends that you deploy your Webcache on the LAN side of a firewall, or on the SuperStack 3 Firewall's DMZ port as described in
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    Configuration (PAC) files to configure the Web browser on each client machine. The PAC file can instruct the browser to go directly to the Web if the Webcache is not available. For more each client machine is needed, which avoids configuration problems and reduces the demand on technical support.
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    in Your Network 35 If the Webcache fails, the Layer 4 device will detect the failure and redirect Web requests to the WAN, if the device supports Webcache health-checks, ensuring that access to the Web is maintained. Deploying the Webcache in Transparent mode has benefits for the security of your
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    the Webcache as the Firewall has more advanced filtering abilities and is able to use the 3Com Web Site Filter (3C16111) if installed. 2 Install the Firewall according to the Superstack 3 Firewall User Guide (DUA1611-0AAA0x) taking into account any safety information. a On the Web interface of the
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    47. I A Network Time Protocol (NTP) address - for more information, see the "System Time" chapter on page 67. You can choose to enter the system time manually instead of using NTP. I A Host Name - The Host Name is combined with the Domain Name System domain to give the internet name of the Webcache
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    38 CHAPTER 2: INSTALLING THE WEBCACHE Setting Up Using the You can setup the Webcache for management via the Web interface by Web Interface using a Web browser on a management workstation that is connected to the Webcache over your test network, or directly using a cross-over cable. Setting Up
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    access the Web interface: 1 Open the Web browser on the Netscape Navigator version 6 is not supported by the Webcache. For the browser the desktop area set to 800 by 600 pixels. 3Com recommends that you set the font size to Small user name and password screen is displayed as shown in Figure 14.
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    name and password screen is not displayed, see "Solving Web Interface Problems" on page 130. 4 Enter your user name and password. For further information, see "Logging in as a Default User" on page 58. Click OK. 5 The Getting Started wizard is displayed when the Web interface has loaded. You must
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    Setting Up the Webcache for Management 41 To setup the Webcache using the Command Line Interface over a test network using Telnet, open a Telnet session using a terminal emulator by specifying the IP address of the Webcache. If you are unsure how to do this, check the documentation supplied
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    begin. If the sequence still does not begin, see "Solving Command Line Interface Problems" on page 133. 2 At the Login and Password prompts, enter your user name and password. For further information, see "Logging in as a Default User" on page 58. 3 If you have logged on correctly, the Top-level
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    is a grouping of computers with related properties. (none) Timezone The timezone in which the Webcache will (GMT - 05:00) operate. Eastern Time (US) NTP Server IP Address The IP address of a Network Time Protocol (none) server. Current Date The current day, month and year. (none) Current
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    Mode Caching Port Number Meaning Default A password for the admin user name, which you must enter whenever you manage the Webcache via describe how to connect the Webcache to your live network. Choosing the Correct 3Com recommends that you use Category 5 cable to connect the LAN Cables port to
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    using an identical address to someone else and your network will not operate correctly. Obtaining a Registered IP Address InterNIC Registration Services is the organization responsible for supplying registered IP addresses. The following contact information is correct at time of publication: World
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    divide your IP network into sub-networks also known as subnets. Support for subnets is important because the number of bits assigned to the of the device number. If you are unsure about what mask to use, 3Com suggest that you contact your network administrator. Default Router A Router is a device
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    as the Webcache. Domain Name System The Domain Name System (DNS) maps a numerical Internet Protocol (IP) address to a more meaningful and easy-to of the destination device?". The DNS server is a machine that keeps track of all the names and their equivalent numeric IP addresses. The DNS server
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    48 CHAPTER 2: INSTALLING THE WEBCACHE I You cannot enter a host name starting or ending with a . (dot) character. It must start and end with a letter or number. I You cannot enter a host name containing a space character. I Domain Name I The domain name must be at least 1 character long. I The
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    configure the Web browser on each client machine to explicitly direct its Web requests to the Webcache. To manually configure Internet Explorer 5: 1 Open Internet Explorer. 2 From the Tools menu, click Internet Options. 3 Click the Connections tab. 4 Click LAN Settings. 5 Tick Use a proxy server
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    the Webcache by: a Logging into the Web Interface. b Selecting Device View -> System -> Caching -> Set Caching Mode. 8 Click OK. To manually configure Netscape Navigator 4.5: 1 Open Netscape Navigator. 2 From the Edit menu, click Preferences. 3 Click the Advanced category and click Proxies. 4 Select
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    Proxy Auto Configuration (PAC) File Scripts 51 You can only use a PAC file to configure the Web browsers on client machines when the Webcache is operating in Proxy mode. You can use the Browser Auto-Configuration screen to create a PAC file which is stored on the Webcache. You can configure the PAC
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    to read the PAC file for its settings. To set Internet Explorer 5: 1 Open Internet Explorer. 2 From the Tools menu, click Internet Options. 3 Click the change this port number. 7 Click OK. To set Netscape Navigator 4.5: 1 Open Netscape Navigator. 2 From the Edit menu, click Preferences. 3 Click the
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    ) The Webcache and Microsoft Internet Explorer 5 (and later versions) support the Web Proxy Auto-Discovery (WPAD) protocol. This protocol enables the user intervention. You cannot set up the 3Com Webcache to be used as a WPAD server. The Web Proxy Auto-Discovery (WPAD) protocol is not supported by
  • 3Com 3C16116-US | User Guide - Page 54
    54 CHAPTER 3: CONFIGURING WEB BROWSERS To configure Internet Explorer 5 to use WPAD: 1 Open Internet Explorer. 2 From the Tools menu, click Internet Options. 3 Click the Connections tab. 4 Click LAN Settings. 5 Tick Automatically detect settings. 6 Click OK. Web Proxy Auto-
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    II WEBCACHE FEATURES Chapter 4 Managing the Webcache Chapter 5 System Time Chapter 6 Security Chapter 7 Controlling and Monitoring Web Access Chapter 8 System Events Chapter 9 Performance Monitoring Chapter 10 System Diagnostics Chapter 11 Software Upgrade and Installation
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    56
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    are covered: I Management Software Interfaces I Logging in as a Default User I Accessing the Web Interface I Understanding the Web Interface I The . Even if you do not intend to actively manage the Webcache, 3Com recommends that you change the default password to prevent unauthorized access to
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    3Com recommends that you set a password for the admin user name as soon as possible. The admin user name is case-sensitive. Accessing the Web To access the Web interface: Interface 1 Open Communicator v4.7 Netscape Navigator version 6 is not supported by the Webcache. For the browser to operate
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    name and password screen is displayed as shown in Figure 17. Figure 17 User Name and Password Screen If the user name and password screen is not displayed, see "Solving Web Interface Problems" on page 130. 4 Enter your user name and password. For further information, see "Logging in as a Default
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    The Web interface is made up of four areas: I The Banner This is always displayed at the top of the browser window. It displays the 3Com logo and SuperStack® logo. I The Toolbar This is always displayed at the top of the browser window, underneath the Banner. It contains three buttons which
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    Click Help to display the Help View. This view allows you to access the Online Help system for the Webcache, additional information from the 3Com Web site and provides specification guidelines for running the Web interface. The Summary View Click Summary on the Toolbar to access the Summary View
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    Hotspot The Console Port on the mimic is a "hotspot". Click the port to open a pop-up menu that contains an operation which you can launch for the console Hotspot The LAN Port on the mimic is a "hotspot". Click the port to open a pop-up menu that contains an operation which you can launch for the LAN
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    site in a new browser window. I Click Library to display the Online Library of the 3Com Web site in a new browser window. I Click Support to display support information from the 3Com Web site in a new browser window. I Click On-line Help to display the Webcache Online Help system in a new browser
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    browser window. It is a Windows® Explorer-like interface that contains various icons which allow you to manage your Webcache. By default, when you open the Web interface, the Summary View is selected and the Navigation Tree is fully collapsed with only the top-level options displayed. Operations
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    the units within it. This symbol is only available in the Summary View. Click the symbol to perform an operation by opening a new window. Click the symbol to open a wizard in a new window. Click the symbol to launch a Help operation. The Information Area The Information Area is always displayed on
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    66 CHAPTER 4: MANAGING THE WEBCACHE
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    of the following ways: I Configuring the System Time Using the Network Time Protocol - for more information, see page 69 I Configuring the System Time Manually - for more information, see page 69. 3Com recommends that you use the Network Time Protocol to configure the system time of the Webcache.
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    to a primary NTP server synchronized to UTC via a Global Positioning Service (GPS) receiver. Such accurate time-keeping is an essential part of limited number and because the load placed on them is increasingly heavy. 3Com recommends that if your network has an internal NTP server, you should use
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    3 Enter the IP address of the NTP server that you want to use in the NTP Server IP Address field. Configuring the System Time Manually To manually configure the system time of the Webcache, you must enter the following information in the Getting Started wizard or Time Configuration command in the
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    70 CHAPTER 5: SYSTEM TIME A Warning window appears asking if you want to continue with the system time change. Click Yes to continue and reset the Performance Graphs, or No to cancel the change.
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    need to log in with the admin username and password, as described in "Logging in as a Default User" on page 58. CAUTION: To prevent unauthorized access and configuration of the Webcache, 3Com recommends that you set a password for the admin username as soon as possible. Setting Passwords To set
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    to the Factory Default Setting, the password is automatically set to the default for the admin user account (no password). What is Password Recovery? If you forget the password for the admin user account, you will no longer be able to perform important management operations on the Webcache
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    mode by removing the power cord from the power socket at the rear of the Webcache and reinserting it. 3Com recommends that you access the CLI in this instance by connecting a standard null-modem cable to the console port enter disable to turn it off. You are now logged in as the default admin user.
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    74 CHAPTER 6: SECURITY
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    7 CONTROLLING AND MONITORING WEB ACCESS This chapter contains information about controlling the access of the users of your network through the Webcache to the Internet. It covers the following topics: I What is Web Site Blocking? I Configuring Web Site Blocking I Customizing the
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    Webcache when a client machine tries to access a Web site that is blocked. This allows you to enter additional information to make the response screen more user friendly. For example, you could add "Access
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    field that you want to add to the response screen that informs the end user that access has been denied. The text or HTML that you enter will be describes the use of friendly HTTP-status error messages: http://support.microsoft.com/support/kb/articles/Q218/1/55.A SP What is Web Client Blocking?
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    can then prevent specific subnet IP address ranges from accessing the Web through the Webcache through Web Client Blocking. For example, you configure your user group A to use a subnet defined as 10.1.2.0-255, and group B to use another subnet defined as 10.1.3.0-255. If you want to prevent group
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    , and will never be blocked. For more information, see "Proxy Auto Configuration (PAC) File Scripts" on page 50. Access Logging allows you to track which client machines have accessed which Web sites through the Webcache. By default Access Logging is disabled. If you enable Access Logging you must
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    . The directory can only contain alphanumeric and or "_" characters and can only be up to 32 characters in length. 8 In the Username field, enter the user name for the FTP server that you want to save the access logs to. 9 In the Password field, enter the password for the username entered
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    it is "seeing" the requests for the Web interface pages and logging these requests in the Access Logs. You should either leave the Web Interface open for only short periods of time to reduce the entries made, or use a log analyzer tool such as Webtrends to view and analyze the Access
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    82 CHAPTER 7: CONTROLLING AND MONITORING WEB ACCESS 3Com recommends that you use Webtrends Log Analyzer to analyze the access logs that the Webcache produces: http://www.webtrends.com
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    accounts when certain significant system events occur. The emails are generated internally within the Webcache in a fixed format that is also used by 3com Network Supervisor. The emails can be sent to as many accounts as you like. Configuring Email To configure Email Notification using the Web
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    Name/IP address field. A valid email address is a fully specified address containing a domain name, for example "[email protected]". The partial address "webcache" would be rejected by the server. 3Com recommends that you use the domain name of the Webcache as the email address. If you have entered
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    defined in the Management Information Bases (MIBs) that the Webcache supports. The Webcache supports the following MIB-2 (standard MIB) and Webcache MIB traps: system configuration may be altered. The admin user has failed to login to the Webcache, or a user name other than admin has been entered.
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    EVENTS SNMP Trap Caching Disk Failed System Error Description A cache storage device within the Webcache has failed. You have to return the unit to 3Com. The Webcache can no longer function as a cache due to hardware failure. Configuring SNMP To configure SNMP Traps using the Web interface: Traps
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    . The System Performance and I/O Performance graphs show more detailed information which is intended for use by your System Administrator and 3Com support personnel. Performance monitoring is always enabled; you cannot turn it off. The Caching Performance graphs show detailed information about the
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    9: PERFORMANCE MONITORING 3 Select Caching Performance Graphs from the available graph types. Select one of the three available time periods, Daily, Weekly, or Monthly, by clicking the appropriate radio button. 4 Click OK. The Caching Performance graphs show the following information, which is
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    and 3Com support personnel. To view the System Performance graphs: 1 Log in to the Web interface. 2 Select Performance -> Graphs in the Navigation Tree. 3 Select System Performance Graphs from the available graph types. Select one of the three available time periods, Daily, Weekly
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    in the Navigation Tree. 3 Select I/O Performance Graphs from the available graph types. Select one of the three available time periods, Daily, Weekly, or Monthly, by clicking the appropriate radio button. 4 Click OK. The I/O Performance graphs show the following information, which is updated every
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    SYSTEM DIAGNOSTICS This chapter contains information about troubleshooting the configuration and network connectivity of the You can use the various system diagnostic capabilities of the Webcache to help you identify any problems that may occur. I Ping - Ping other devices on the network. I Trace
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    allows you to display the network hops from the Webcache to a device on an IP network. This feature is useful to diagnose connectivity problems such as a failed network device between the Webcache and the web server being accessed. Performing a Trace To perform a trace route to a device using
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    of it is displayed and how it is accessed. The System Log is primarily intended to be used by your System Administrator and 3Com support personnel to troubleshoot the Webcache. Configuring the To configure the System Log using the Web interface: System Log 1 Log in to the Web interface. 2 Click
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    SYSTEM DIAGNOSTICS should only enable it if you have been instructed to do so by 3Com support personnel. What is a Syslog Server? Syslog is a machines on your network. Note that 3CDaemon is provided without warranty by 3Com. WebTrends Firewall Suite has an integral Syslog server which you can
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    are displayed. Click Refresh to update the information that is displayed. The System Log is primarily intended to be used by your System Administrator and 3Com support personnel to troubleshoot the Webcache.
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    96 CHAPTER 10: SYSTEM DIAGNOSTICS
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    software of the Webcache when a new version becomes available. 3Com recommends that you always upgrade to the latest software version to Webcache, the Upgrade Software wizard opens and guides you through the software upgrade process. Alternatively, you can manually perform a software upgrade, by
  • 3Com 3C16116-US | User Guide - Page 98
    The configuration of the Webcache is preserved after a software upgrade has been performed; you do not have to re-configure the settings. 3Com recommends that you configure the Webcache to automatically detect new software versions. Software Upgrade SNMP Traps An SNMP Trap is sent to your
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    downloads software upgrades from by entering the new FTP address, directory, user name and password in the appropriate fields. You may want to change to download a software upgrade from a location other than the default 3Com FTP site. You can restore the FTP site to the factory defaults
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    AND INSTALLATION 3Com recommends that log in to the Webcache, as the Upgrade Software wizard will automatically open. I Discard Upgrade Select this if you do not want to upgrade Upgrade Detection in the Upgrade Settings window and perform a manual software upgrade. Select an option and click Next.
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    software upgrade by downloading and locating the software upgrade file yourself. You must disable automatic software upgrade detection before you can perform a manual upgrade; for more information see "Detecting Software Upgrades"on page 98. Also, you can only perform a software upgrade if you have
  • 3Com 3C16116-US | User Guide - Page 102
    running. This is useful in the unlikely event that you are experiencing problems following a software upgrade of the Webcache. A software installation should only be performed as an emergency recovery procedure. 3Com recommends that you always run the latest software version on the Webcache
  • 3Com 3C16116-US | User Guide - Page 103
    have selected is an invalid Webcache software image, the Software Installation Failed screen opens. Click Back to specify the location of the software image file again. software version in the unlikely event that you are experiencing problems following a software upgrade of the Webcache. You should
  • 3Com 3C16116-US | User Guide - Page 104
    the Webcache is running. Example You perform a software upgrade and experience problems with the Webcache. You now want to return the Webcache to a is available either on the CD supplied with the Webcache or on the 3Com FTP site. The same software image is used for installation and for upgrades.
  • 3Com 3C16116-US | User Guide - Page 105
    Saving a Configuration 105 Saving a Configuration Restoring a Configuration earlier software version via a software installation, you can use a matching configuration file to restore the settings. To save the current system configuration of the Webcache using the Web interface: 1 Log in to the Web
  • 3Com 3C16116-US | User Guide - Page 106
    106 CHAPTER 11: SOFTWARE UPGRADE AND INSTALLATION CAUTION: You cannot restore a system configuration file which was created on a different software version to the version that the Webcache is currently running. 5 Click Restore. The restore process begins. 6 The Restore Configuration Successful
  • 3Com 3C16116-US | User Guide - Page 107
    III COMMAND LINE INTERFACE Chapter 12 Command Line Interface
  • 3Com 3C16116-US | User Guide - Page 108
    108
  • 3Com 3C16116-US | User Guide - Page 109
    Line Interface I Understanding the Command Line Interface I A Quick Guide to the Commands I Getting Started I Displaying and Changing IP- System -> Control -> Telnet in the Web interface. This opens a telnet session to the Command Line Interface. You must use a VT52 or VT100/ANSI
  • 3Com 3C16116-US | User Guide - Page 110
    of the console port via the Web interface. 2 Access the Command Line Interface using a valid user name and password. Default user names and passwords are described in "Logging in as a Default User" on page 58. 3 Configure the basic settings of the Webcache by completing the Getting Started wizard
  • 3Com 3C16116-US | User Guide - Page 111
    over a network using Telnet, open a Telnet session using a terminal Problems" on page 133. 2 At the Login and Password prompts, enter your user name and password. For further information, see "Logging in as a Default User" on page 58. To prevent unauthorized configuration of the Webcache, 3Com
  • 3Com 3C16116-US | User Guide - Page 112
    112 CHAPTER 12: COMMAND LINE INTERFACE Understanding the Command Line Interface Once you log in to the Command Line Interface, the Top-level menu is displayed as shown below: Figure 20 The Top-level Menu The Command Line Interface is made up of two areas: I The Menu Area - Contains the current
  • 3Com 3C16116-US | User Guide - Page 113
    At the prompt, enter enough characters to uniquely identify the commands. For example, to enter the security menu and change the password for the admin user, enter: se pa from the Top-level menu. I To abort a command Press [Esc] to return to the Top-level menu. Displaying Menus There are
  • 3Com 3C16116-US | User Guide - Page 114
    any time by entering ? at the Select menu option prompt. A Quick Guide to the Commands Table 12 describes the commands that are available in the Command devices on your network. Specifies the password for the current user. Enables and disables password recovery. Initializes the Webcache to factory
  • 3Com 3C16116-US | User Guide - Page 115
    Getting Started 115 Getting Started The Getting Started command allows you to quickly configure or view basic setup information for the Webcache. To configure basic setup information: 1 At the Top-level menu, enter: gettingStarted The following prompt is displayed: Enter system name: 2 Enter a
  • 3Com 3C16116-US | User Guide - Page 116
    Central Time (US). The following prompt is displayed: Enter time option (NTP,manual) [manual]: 12 Enter either NTP (Network Time Protocol) or manual. I If is displayed: Old password: 14 Enter the current password for the admin user. The following prompt is displayed: Enter new password: If you press
  • 3Com 3C16116-US | User Guide - Page 117
    Exiting the Command Line Interface 117 The following prompt is displayed: Retype password: 16 Re-enter the new password. A message is displayed informing you that the password has been successfully changed. The following prompt is displayed: Please enter mode of operation (proxy, transparent) [
  • 3Com 3C16116-US | User Guide - Page 118
    118 CHAPTER 12: COMMAND LINE INTERFACE I Specify an IP address to be traced Specifying Basic IP Configuration You can use the basicConfig command on the IP menu to configure the IP stack of the Webcache. This will allow you to manage the Webcache over IP via the CLI or Web interface. This command
  • 3Com 3C16116-US | User Guide - Page 119
    Displaying and Changing IP-related Information 119 The following prompt is displayed: Enter DNS Server IP address [196.168.100.3]: 4 Enter a valid Domain Name System (DNS) Server IP address. Resetting IP Information to Factory Default Settings You can reset all IP information on the Webcache to
  • 3Com 3C16116-US | User Guide - Page 120
    120 CHAPTER 12: COMMAND LINE INTERFACE 64 bytes from 192.156.136.22: icmp_seq=0 ttl=248 time=195.2 ms If the device is not accessible, or is not functioning correctly, a message similar to the following is displayed: No answer from 192.156.136.22 Displaying IP Summary Information You can display
  • 3Com 3C16116-US | User Guide - Page 121
    ) 1.292ms, 1.343ms, 1.810ms 2.BW-RTR-4.EUR.3Com.COM (161.71.21.45) 26.027ms, 27.156ms, 44.902ms 3.BW-RTR-1.EUR.3Com.COM (140.204.220.15) 24.323ms, 24. new password: Enter the password: 2 Enter the new password for the admin user. The following prompt is displayed, allowing you to re-enter the new
  • 3Com 3C16116-US | User Guide - Page 122
    recommends that you leave Password Recovery enabled. If you disable it and subsequently forget the password for the admin user name, you will have to return the Webcache to 3Com. To enable or disable password recovery: 1 At the Top-level menu, enter: security pwdRecover The following example prompt
  • 3Com 3C16116-US | User Guide - Page 123
    Displaying and Changing Webcache Information and Functions 123 2 Enter yes if you wish to proceed, or no if you want to stop the initialization. What Happens During an Initialization? Initializing the Webcache returns it to its default (factory) settings; for more information see "Default Settings"
  • 3Com 3C16116-US | User Guide - Page 124
    124 CHAPTER 12: COMMAND LINE INTERFACE To specify the contact name details: 1 At the Top-level menu, enter: system management contact The following prompt is displayed: Enter system contact []: 2 Enter a system contact for the Webcache. The name can be up to 80 characters long.
  • 3Com 3C16116-US | User Guide - Page 125
    community for user 'admin'[private]: 2 Enter a community string for the admin user name. support representative if you have a problem. To display the information: 1 At the Top-level menu, enter: system summary The administration details are displayed as shown in the example below: 3Com
  • 3Com 3C16116-US | User Guide - Page 126
    126 CHAPTER 12: COMMAND LINE INTERFACE I Contact Displays the details of a person to contact about the Webcache. For information about assigning new contact details, see "Specifying a Contact Name" on page 123. I Time Since Reset Displays the time that has elapsed since the Webcache was last reset,
  • 3Com 3C16116-US | User Guide - Page 127
    IV PROBLEM SOLVING Chapter 13 Problem Solving
  • 3Com 3C16116-US | User Guide - Page 128
    128
  • 3Com 3C16116-US | User Guide - Page 129
    : I Accessing the Webcache via the Console Line I Accessing the Webcache via Telnet I Solving Web Interface Problems I Solving Command Line Interface Problems I Solving Webcache Performance Problems Accessing the Webcache via the Console Line The terminal or terminal emulator cannot access the
  • 3Com 3C16116-US | User Guide - Page 130
    VT100 mode. I Press Return a few times to wake up the CLI. Solving Web Interface Problems The Web interface is not displayed in the Web browser. The Web interface can be accessed by Communicator v4.6 I Netscape Communicator v4.7 Netscape Navigator version 6 is not supported by the Webcache.
  • 3Com 3C16116-US | User Guide - Page 131
    Solving Web Interface Problems 131 For the browser to operate the Web interface correctly JavaScript network. Reload the Web interface by clicking Reload on the browser's toolbar. If this does not solve the problem, go to the end of the URL in the Address field of the browser and press [Return]. This
  • 3Com 3C16116-US | User Guide - Page 132
    : PROBLEM SOLVING problem, messages are displayed when the Contacts, Home Page, Library or Support icons in the Help View are clicked. Your management workstation cannot outlined on page 73 to define a new password for the admin user name. The Customize Response page is not displayed when a Web
  • 3Com 3C16116-US | User Guide - Page 133
    set manually. If you have configured the system time manually and it is inaccurate, the Webcache clock has probably drifted over time. 3Com recommends 3Com support personnel. I If no front panel LEDs are lit, check the power connection to the Webcache. Solving Command Line Interface Problems
  • 3Com 3C16116-US | User Guide - Page 134
    PROBLEM SOLVING Solving Webcache Performance Problems The performance of the Webcache is poor Check: I Whether any of the cache storage devices have failed. Examine the front panel LEDs to ensure there are no faults found. If there are, contact 3Com support settings manually to avoid service Web
  • 3Com 3C16116-US | User Guide - Page 135
    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.
  • 3Com 3C16116-US | User Guide - Page 136
    136 CHAPTER 13: PROBLEM SOLVING
  • 3Com 3C16116-US | User Guide - Page 137
    V APPENDICES AND INDEX Appendix A Safety Information Appendix B Cable Specifications and Pin-outs Appendix C Technical Specifications Appendix D Technical Support Glossary Index
  • 3Com 3C16116-US | User Guide - Page 138
    138
  • 3Com 3C16116-US | User Guide - Page 139
    A SAFETY INFORMATION You must read the following safety information before carrying out any installation or removal of components, or any maintenance procedures on the Webcache 1000/3000. WARNING: Warnings contain directions that you must follow for your personal safety. Follow all directions
  • 3Com 3C16116-US | User Guide - Page 140
    140 APPENDIX A: SAFETY INFORMATION Important Safety Information I Installation and removal of the unit must be carried out by qualified personnel only. I The unit must be earthed (grounded). I The unit must be connected to an earthed (grounded) outlet to comply with European safety standards and
  • 3Com 3C16116-US | User Guide - Page 141
    Important Safety Information 141 I France and Peru only This unit cannot be powered from IT† supplies. If your supplies are of IT type, this unit must be powered by 230V (2P+T) via an isolation transformer ratio 1:1, with the secondary connection point labelled Neutral, connected directly to earth (
  • 3Com 3C16116-US | User Guide - Page 142
    142 APPENDIX A: SAFETY INFORMATION Consignes importantes de sécurité I L'installation et la dépose de ce groupe doivent être confiés à un personnel qualifié. I Vous devez mettre l'appareil à la terre (à la masse) ce groupe. I Vous devez raccorder ce groupe à une sortie mise à la terre (mise à la
  • 3Com 3C16116-US | User Guide - Page 143
    Consignes importantes de sécurité 143 que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. I Le coupleur d'appareil (le connecteur du groupe et non pas la prise murale) doit respecter une configuration qui permet un branchement sur une entrée d'appareil EN60320/CEI 320. I
  • 3Com 3C16116-US | User Guide - Page 144
    144 APPENDIX A: SAFETY INFORMATION Wichtige Sicherheitsinformat ionen I Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen. I Das Gerät muß geerdet sein. I Das Gerät muß an eine geerdete Steckdose angeschlossen werden, die europäischen Sicherheitsvorschriften und den
  • 3Com 3C16116-US | User Guide - Page 145
    Wichtige Sicherheitsinformationen 145 Bezeichnung Neutral tragen. †Impédance à la terre. WARNHINWEIS: RJ-45-Porte. Diese Porte sind geschützte Datensteckdosen. Sie dürfen weder wie normale traditionelle Telefonsteckdosen noch für die Verbindung der Einheit mit einem traditionellem privatem oder ö
  • 3Com 3C16116-US | User Guide - Page 146
    146 APPENDIX A: SAFETY INFORMATION
  • 3Com 3C16116-US | User Guide - Page 147
    at speeds of up to 100 Mbps. Category 5 cabling is better to use for network cabling than Category 3, because it supports both Ethernet (10 Mbps) and Fast Ethernet (100 Mbps) speeds. 3Com recommends that you use Category 5 cable - the maximum segment length for this type of cable is 100 m (328 ft
  • 3Com 3C16116-US | User Guide - Page 148
    148 APPENDIX B: CABLE SPECIFICATIONS AND PIN-OUTS Pin-outs Null-Modem Cable 9-pin to RS-232 25-pin Webcache 1000/3000 Cable connector: 9-pin female Screen Shell TxD 3 RxD 2 Ground 5 RTS 7 CTS 8 DSR 6 DCD 1 DTR 4 PC-AT Serial Cable 9-pin to 9-pin Webcache 1000/3000 Cable
  • 3Com 3C16116-US | User Guide - Page 149
    Pin-outs 149 Modem Cable 9-pin to RS-232 25-pin Webcache 1000/3000 Cable connector: 9-pin female Screen Shell TxD 3 RxD 2 RTS 7 CTS 8 DSR 6 Ground 5 DCD 1 DTR 4 RS-232 Modem Port Cable connector: 25-pin male 1 Screen 2 TxD 3 RxD 4 RTS 5 CTS 6 DSR 7 Ground 8 DCD 20
  • 3Com 3C16116-US | User Guide - Page 150
    150 APPENDIX B: CABLE SPECIFICATIONS AND PIN-OUTS
  • 3Com 3C16116-US | User Guide - Page 151
    13 Kg (28.66 lbs) 0 ° to 40 °C (32 ° to 104 °F) -10 ° to +70 °C (14 ° to 158 °F) 10-95% relative humidity, non-condensing EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32. Operational testing: paras 2.1, 2.2, 2.30 and 2.13). UL 1950, EN60950, CSA 22.2 No. 950, IEC 60950, NOM
  • 3Com 3C16116-US | User Guide - Page 152
    152 APPENDIX C: TECHNICAL SPECIFICATIONS Standards Supported SNMP: SNMP protocol (RFC 1517) MIB-II (RFC 1213) Interface MIB (RFC 1573) Remote Monitoring MIB (RFC 1757) Terminal Emulation: Telnet (RFC 854) Protocols Used
  • 3Com 3C16116-US | User Guide - Page 153
    is correct at time of publication. For the most recent information, 3Com recommends that you access the 3Com Corporation World Wide Web site. Online Technical Services 3Com offers worldwide product support 24 hours a day, 7 days a week, through the following online systems: I World Wide Web site
  • 3Com 3C16116-US | User Guide - Page 154
    TECHNICAL SUPPORT 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: I Hostname: ftp.3com.com
  • 3Com 3C16116-US | User Guide - Page 155
    Details about recent configuration changes, if applicable Here is a list of worldwide technical telephone support numbers. These numbers are correct at the time of publication. Refer to the 3Com Web site for updated information. Country Telephone Number Country Asia, Pacific Rim Australia Hong
  • 3Com 3C16116-US | User Guide - Page 156
    156 APPENDIX D: TECHNICAL SUPPORT 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
  • 3Com 3C16116-US | User Guide - Page 157
    Country U.S.A. and Canada Telephone Number 1 800 NET 3Com (1 800 638 3266) Enterprise Customers: 1 800 876 3266 Returning Products for Repair 157 Fax Number 1 408 326 7120 (not toll-free)
  • 3Com 3C16116-US | User Guide - Page 158
    158 APPENDIX D: TECHNICAL SUPPORT
  • 3Com 3C16116-US | User Guide - Page 159
    to manage all of 3Com's Supervisor networking solutions. control. When connected to a port that also supports auto-negotiation, the link can automatically configure itself printer or server that is connected to a network. In this User Guide, client machine is used to describe a machine on your
  • 3Com 3C16116-US | User Guide - Page 160
    160 GLOSSARY DNS Domain Name System. This system maps a numerical Internet Protocol (IP) address to a more . Intranet An Intranet is an organisation wide network using Internet protocols such as web services, TCP/IP, HTTP and HTML. An Intranet is normally used for internal communication and
  • 3Com 3C16116-US | User Guide - Page 161
    GLOSSARY 161 with periods (full-stops), and is made up of a network section, an optional subnet section and a host section. LAN Local Area Network. A network of client machines (such as PCs, printers, servers) and network devices (hubs and switches) that cover a relatively small geographic area (
  • 3Com 3C16116-US | User Guide - Page 162
    the interconnection of networks. Originally a UNIX standard, TCP/IP is now supported on almost all platforms, and is the protocol of the Internet. TCP provides a virtual terminal service, letting a user log into another computer system and access a device as if the user were connected directly to
  • 3Com 3C16116-US | User Guide - Page 163
    . WPAD Web Proxy Auto-Discovery. This protocol enables the Web browser on client machines to automatically find and load proxy configuration information from a server without user intervention.
  • 3Com 3C16116-US | User Guide - Page 164
    164 GLOSSARY
  • 3Com 3C16116-US | User Guide - Page 165
    -T/100BASE-TX port 21 3Com Knowledgebase Web Services 153 3Com Network Supervisor 18, 83 3Com URL 153 A access levels of default users 58 Access Logging 79 command 119 pwdRecover command 122 quick guide 114 reboot command 123 Security 121 solving problems 133 summary (System) command 125 summary
  • 3Com 3C16116-US | User Guide - Page 166
    Mimic 62 Device Summary 63 Device View 61 diagnostics 91 dnsConfig command 118 documentation release notes 26 user guide 26 Domain Name System (DNS) 47 syntax 47 E Email Notification 83 configuring 83 events 93 link status 19 power/self test 20 LAN port 21 operation 32 problems 32 rear panel 21
  • 3Com 3C16116-US | User Guide - Page 167
    logging in password 71 user name 71 logging in as a default user 58 logout command 45 hops 92 Network Supervisor 18 network supplier support 154 Network Time Protocol 67, 68 choosing a obtaining registered IP address 45 online technical services 153 P package contents 26 password command 121 password
  • 3Com 3C16116-US | User Guide - Page 168
    configuring 98 performing 99 SNMP Traps 98 unsuccessful 98 solving problems 129 specifications, technical 151 Squid 79 stratums 68 subnet 67 configuring 67 manual 69 Network Time Protocol 69 T technical specifications 151 technical support 3Com Knowledgebase Web Services 153 3Com URL 153 network
  • 3Com 3C16116-US | User Guide - Page 169
    92 traceroute command 120 tracking access 79 analyzing the logs 81 configuring 80 viewing 81 transparent cache 33, 34 transparent mode 21 troubleshooting 91 U Unit hotspot 62 upgrading software 97 configuring 98 performing 99 SNMP Traps 98 unsuccessful 98 URL 153 user guide 26 user name, admin 71
  • 3Com 3C16116-US | User Guide - Page 170
    170 INDEX
  • 3Com 3C16116-US | User Guide - Page 171
    used only in connection with a 3Com adapter. You may reproduce and provide one (1) copy of the Software and supporting documentation for each such workstation or are as stated on the Limited Warranty Card or in the product manual, whether in paper or electronic form, accompanying the Software. Such
  • 3Com 3C16116-US | User Guide - Page 172
    used is available on the 3Com FTP site at ftp.3com.com Copyright (C) 1989, software is free for all its users. This General Public License applies free software (and charge for this service if you wish), that you receive not the original, so that any problems introduced by others will not reflect on
  • 3Com 3C16116-US | User Guide - Page 173
    copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally
  • 3Com 3C16116-US | User Guide - Page 174
    , but may differ in detail to address new problems or concerns. Each version is given a distinguishing version exceptions for this. Our decision will be guided by the two goals of preserving the free DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 12. IN NO EVENT
  • 3Com 3C16116-US | User Guide - Page 175
  • 3Com 3C16116-US | User Guide - Page 176
    and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. Operation of this user may find the following booklet prepared by the Federal Communications Commission helpful: How to Identify and Resolve Radio-TV Interference Problems
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Part No. DUA1611-5AAA02
Published May 2001
SuperStack
®
3
Webcache 1000 (3C16115)
Webcache 3000 (3C16116)
User Guide