SuperStack® 3 Webcache 1000 (3C16115) Webcache 3000 (3C16116) User Guide http://www.3com.com/ Part No.
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.
CONTENTS ABOUT THIS 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 Network Supervisor Webcache — Front View Detail 19 LEDs 19 Webcache — Rear View Detail 20 Power Socket 20 Console Port 20 WAN Port 21 LAN Port 21 WAN and LAN Port LEDs 21 Default Settings 22 2 INSTALLING THE WEBCACHE Package Contents 26 Choosing a Suitable Site 26 Rack-Mounting the Webcache 27 The P
Proxy Cache 33 Transparent Cache 34 Migrating from Proxy Cache to Transparent Cache Mode Deploying the SuperStack 3 Firewall as a Proxy Forwarder Setting Up the Webcache for Management 36 Before You Begin 37 Setting Up Using the Web Interface 38 Setting Up Using the Command Line Interface 40 Getting Started Wizard Settings 43 Connecting the Webcache to the Live Network 44 Choosing the Correct Cables 44 Connecting the Webcache 44 Network Configuration Concepts 45 IP Addresses 45 Subnets and Using a Subnet Ma
The Device View 61 The Help View 63 The Navigation Tree 64 The Information Area 65 5 SYSTEM TIME Configuring the System Time 67 What is the Network Time Protocol? 68 Choosing a Network Time Protocol Server 68 Configuring the System Time Using the Network Time Protocol Configuring the System Time Manually 69 System Time and Performance Graphs 69 6 SECURITY What are Passwords? 71 Setting Passwords 71 What is Password Recovery? 72 Enabling/Disabling Password Recovery Performing Password Recovery 73 7 CON
SNMP Traps 85 Configuring SNMP Traps 9 86 PERFORMANCE MONITORING What is Performance Monitoring? 87 Caching Performance Graphs 87 System Performance Graphs 89 I/O Performance Graphs 89 10 SYSTEM DIAGNOSTICS What are System Diagnostics? 91 Pinging Other Devices 91 Performing a Ping 91 Tracing IP Addresses 92 Performing a Trace Route 92 System Log 93 Configuring the System Log 93 What is a Syslog Server? 94 Obtaining a Syslog Server 94 Viewing the System Log 95 11 SOFTWARE UPGRADE AND INSTALLATION What
III COMMAND LINE INTERFACE 12 COMMAND LINE INTERFACE Accessing the Command Line Interface 109 Accessing the Command Line Interface Through the Console Port 110 Accessing the Command Line Interface Over the Network 111 Logging In To the Command Line Interface 111 Exiting the Interface 111 Understanding the Command Line Interface 112 Entering Commands 113 Displaying Menus 113 Obtaining Help 114 A Quick Guide to the Commands 114 Getting Started 115 Exiting the Command Line Interface 117 Displaying and Changin
IV PROBLEM SOLVING 13 PROBLEM SOLVING Accessing the Webcache via the Console Line 129 Accessing the Webcache via Telnet 130 Solving Web Interface Problems 130 Solving Command Line Interface Problems 133 Solving Webcache Performance Problems 134 V APPENDICES AND INDEX A SAFETY INFORMATION Important Safety Information 140 Consignes importantes de sécurité 142 Wichtige Sicherheitsinformationen 144 B CABLE SPECIFICATIONS AND PIN-OUTS Cable Specifications 147 Pin-outs 148 Null-Modem Cable 148 PC-AT Serial C
Returning Products for Repair 156 GLOSSARY INDEX 3COM END USER SOFTWARE LICENSE AGREEMENT GNU GENERAL PUBLIC LICENSE VERSION 2, JUNE 1991 REGULATORY NOTICES
ABOUT THIS GUIDE This guide provides all the information you need to install and use a SuperStack® 3 Webcache 1000/3000. It also describes the features of the Webcache and outlines how to use those features to optimize the performance of the Webcache. This guide is intended for the system or network administrator who is responsible for installing, configuring and managing the network. It assumes a basic working knowledge of local area network (LAN) and wide area network (WAN) operations.
ABOUT THIS GUIDE Conventions Table 1 and Table 2 list conventions that are used throughout this guide.
Related Documentation 13 Table 2 Text Conventions (continued) Convention Description Words in italics Italics are used to: ■ Emphasize a point. ■ Denote a new term at the place where it is defined in the text. ■ Identify menu names, menu commands, and software button names. Examples: From the Help menu, select Contents. Click OK.
ABOUT THIS GUIDE ■ Page number (if appropriate) Example: ■ SuperStack 3 Webcache 1000/3000 User Guide ■ Part number: DUA1611-5AAA01 ■ Page 25 Please note that we can only respond to comments and questions about 3Com product documentation at this e-mail address. Questions related to technical support or sales should be directed in the first instance to your network supplier. Product Registration You can now register your SuperStack 3 Webcache on the 3Com Web site: http://support.3com.
I GETTING STARTED Chapter 1 Introducing the Webcache Chapter 2 Installing the Webcache Chapter 3 Configuring Web Browsers
1 INTRODUCING THE WEBCACHE This chapter contains introductory information about the Webcache 1000/3000 and how it can be used in your network.
CHAPTER 1: INTRODUCING THE WEBCACHE ■ Smoother Traffic Flow Traffic surges can stress your network and server. The Webcache can help smooth out network traffic and reduce delays in serving Web content. As more users request the same Web content, it becomes more likely that the content will be stored in the Webcache, and in turn the Webcache becomes more effective at eliminating upstream traffic.
Webcache — Front View Detail Webcache — Front View Detail 19 Figure 1 Webcache — Front View Activity LED Cache Storage Status LED(s) 1 Power/Self test LED Link Status LED(s) 2 3 Cache Storage Status LAN WAN Activity Power/Self test Link Status Cache Storage Status green = ok yellow = failed Link Status green = 100 Mbps yellow = 10 Mbps Webcache 3000 3C16116 ® SuperStack 3 The above illustration shows a Webcache 3000.
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. Green flashing The Webcache is either initializing or performing a software upgrade. Webcache — Rear View Detail Yellow The Webcache is powered-up but is not caching - a failure has occurred.
Webcache — Rear View Detail 21 console port uses a standard null-modem cable and is set to 9600 baud, 8 data bits, no parity and 1 stop bit. WAN Port The WAN port is an auto-negotiating 10BASE-T/100BASE-TX RJ-45 port. It is used to connect the Webcache to the network in an inline deployment environment. CAUTION: The Webcache does not support inline deployment in Version 1.0. You should not connect network cabling to the WAN port.
CHAPTER 1: INTRODUCING THE WEBCACHE 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 (100 Mbps) link is present. Yellow Off An Ethernet speed (10 Mbps) link is present. The Link Speed LED does not change its state if the link is broken. It remains in its current state until a new link is established.
Default Settings 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 (NTP) Disabled Web Browser Auto-Configuration Disabled Upgrade Notification Enabled but requires configuration Upgrade Detection/Download Enabled 23 Email Notification Events Disabled Multi Router Traffic Grapher (MRTG) Graphs Always Enabled admin
CHAPTER 1: INTRODUCING THE WEBCACHE
2 INSTALLING THE WEBCACHE This chapter contains the information you need to install and set up the Webcache 1000/3000. It covers the following topics: ■ Package Contents ■ Choosing a Suitable Site ■ Rack-Mounting the Webcache ■ The Power-up Sequence ■ Deploying the Webcache in Your Network ■ Setting Up the Webcache for Management ■ Getting Started Wizard Settings ■ Connecting the Webcache to the Live Network ■ Network Configuration Concepts WARNING: Safety Information.
CHAPTER 2: INSTALLING THE WEBCACHE Package Contents ■ Webcache 1000 (3C16115) or Webcache 3000 (3C16116) ■ CD-ROM ■ User Guide (this guide) ■ Release Notes ■ Warranty Card ■ Power Cord ■ Rack-Mounting Kit containing: ■ 2 x Rack Mounting Rails ■ 2 x Rack Mounting Brackets ■ 2 x Adjustable Brackets ■ 2 x Front Plates ■ 16 x Screws These items are shown in Figure 4 on page 27.
Rack-Mounting the Webcache 27 If the Webcache is installed in a 19-inch rack or closed assembly its local air temperature may be greater than room ambient temperature. Rack-Mounting the Webcache ■ The air is as free from dust as possible. ■ The Webcache is installed in a clean, air conditioned environment. The Webcache is 1U high and will fit in most standard 19-inch rack mounts. CAUTION: The rear of the Webcache must be supported. This is best achieved through the use of a 19-inch 4-posted rack.
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.
Rack-Mounting the Webcache 29 4 Use an adjustable bracket to secure a rack-mounting rail to the rear of your rack as shown in Figure 6. To do this: a Slide the adjustable bracket onto the rack-mounting rail and attach it using two of the screws provided at a position suitable for your rack. b Use rack-nuts (not supplied) to attach the rack-mounting rail and adjustable bracket assembly to the rear of your rack.
CHAPTER 2: INSTALLING THE WEBCACHE 5 Attach the rack-mounting rail to the front of the rack. To do this: a Insert two screws through aligned openings in the front plate, rack and rack-mounting rail as shown in Figure 7. b Tighten the screws with a suitable screwdriver. Figure 7 Fitting a Rack-Mounting Rail to the Front of the Rack 6 Repeat step 4 and step 5 for the other side of the rack.
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 in the Webcache are not obstructed. The Power-up Sequence Powering-up the Webcache The following sections describe how to get your Webcache powered-up and ready for operation.
CHAPTER 2: INSTALLING THE WEBCACHE CAUTION: The Webcache has no ON/OFF switch; the only method of connecting or disconnecting mains power is by connecting or disconnecting the power cord. Checking for Correct Operation of LEDs During the power-up of the Webcache, all ports on the Webcache are disabled, all of the LEDs light and the Power/Self test LED flashes green When the power-up has completed, check the Power/Self test LED to make sure that your Webcache is operating correctly.
Deploying the Webcache in Your Network Deploying the Webcache in Your Network 33 You must determine how you are going to deploy the Webcache in your network. The Webcache can be deployed in two ways: ■ Proxy Cache mode — The Webcache is connected to a Layer 2 switch in your LAN. You must configure the Web browser on each client machine in your network to direct its Web requests to the Webcache.
CHAPTER 2: INSTALLING THE WEBCACHE In the Proxy Cache deployment the Webcache is connected to an Ethernet switch in your LAN. You must configure the Web browser on each client machine in your network to explicitly direct its Web requests to the Webcache. For more information on Web browser configuration, see “Configuring Web Browsers” on page 49. All Web requests are received and served by the Webcache. All non-Web traffic bypasses the Webcache and is sent directly to the appropriate destination.
Deploying the Webcache 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 network. It ensures that only client machines that are inside your network can access the systems and resources within it. This eliminates the need for serious access controls.
CHAPTER 2: INSTALLING THE WEBCACHE Network Address Translation (NAT) does not apply to the DMZ port of the Firewall so you will need to configure the Webcache with a registered IP address. b Set the Webcache to Proxy Mode. This setting can be made from the Getting Started Wizard or by selecting Device View > System > Caching > Set Caching Mode from the Web interface. c In the Port Number field enter the number 8080 (this is the default value).
Setting Up the Webcache for Management 37 Webcache to your live network. In particular, ensure that the IP settings of the Webcache fit into those of your network. For more information, see “Getting Started Wizard Settings” on page 43. Before You Begin To setup the Webcache for management, you must correctly configure it with the following information. Ensure that you have this information for the Webcache ready before you begin. ■ An IP address — for more information, see “IP Addresses” on page 45.
CHAPTER 2: INSTALLING THE WEBCACHE Setting Up Using the Web Interface You can setup the Webcache for management via the Web interface by 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 Over the Test Network The Webcache is pre-configured with a default IP address, which is within the range of addresses reserved by the IETF for private IP networks.
Setting Up the Webcache for Management 39 Accessing the Web Interface To access the Web interface: 1 Open the Web browser on the management workstation. To display the Web interface correctly, use one of the following Web browsers: ■ Microsoft Internet Explorer v4.0 ■ Microsoft Internet Explorer v5.0 ■ Microsoft Internet Explorer v5.5 ■ Netscape Communicator v4.5 ■ Netscape Communicator v4.6 ■ Netscape Communicator v4.7 Netscape Navigator version 6 is not supported by the Webcache.
CHAPTER 2: INSTALLING THE WEBCACHE Figure 14 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 User” on page 58. Click OK. 5 The Getting Started wizard is displayed when the Web interface has loaded.
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 with the Telnet facility To connect the Webcache to the test network: ■ The client machine must be in the same subnet as the Webcache to be able to access it using the default IP address.
CHAPTER 2: INSTALLING THE WEBCACHE b Tighten the retaining screws on the cable to prevent it from being loosened. c Connect the other end of the cable to your terminal, terminal emulator, or modem. Make sure that the terminal, terminal emulator, or modem have the same settings as the console port: ■ 8 data bits ■ no parity ■ 1 stop bit 2 To configure the settings of the terminal, terminal emulator, or modem, see the documentation that accompanies it.
Getting Started Wizard Settings Getting Started Wizard Settings 43 The following table shows the settings that you can configure in both the Web interface and Command Line Interface Getting Started wizards. CAUTION: You must configure the basic settings of the Webcache by completing the Getting Started wizard before you introduce the Webcache to your live network. In particular, ensure that the IP settings of the Webcache fit into those of your network.
CHAPTER 2: INSTALLING THE WEBCACHE Setting Meaning Password A password for the admin user name, which (no password) you must enter whenever you manage the Webcache via the Web interface or Command Line Interface. Can be up to 10 characters long, is case-sensitive and must only contain alpha-numeric characters. 1a2b3c4d4e Caching Mode Choose how the Webcache is deployed within your network - either Proxy Mode or Transparent Mode.
Network Configuration Concepts Network Configuration Concepts IP Addresses 45 The following sections explain certain key concepts of configuring your network, which you must understand in order to set up the Webcache successfully. If you are uncertain about what IP addresses to assign your equipment, contact your network administrator. To operate correctly, each device on your network (for example a webcache or management station) must have a unique IP address. IP addresses have the format nnn.nnn.nnn.
CHAPTER 2: INSTALLING THE WEBCACHE Subnets and Using a Subnet Mask You can divide your IP network into sub-networks also known as subnets. Support for subnets is important because the number of bits assigned to the device part of an IP address limits the number of devices that may be addressed on any given network. For example, a Class C address is restricted to 254 devices. If you have a small network (less than 254 devices), you may decide not to have multiple subnets.
Network Configuration Concepts 47 exists on your network, enter the IP address 0.0.0.0 or leave the field blank. If you set the default router to 0.0.0.0 or leave it blank, the Webcache will only be able to access devices that are in the same subnet 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-remember name.
CHAPTER 2: INSTALLING THE WEBCACHE ■ ■ ■ You cannot enter a host name containing a space character. Domain Name ■ The domain name must be at least 1 character long. ■ The domain name must not exceed 63 characters long. ■ ■ ■ ■ You cannot enter a host name starting or ending with a . (dot) character. It must start and end with a letter or number. The domain name must be comprised of alphanumeric characters, - (hyphens) and _ (underscores).
3 CONFIGURING WEB BROWSERS This chapter contains information about configuring Web browsers on client machines for use in a Webcache proxy cache deployment. It covers the following alternative methods: ■ Manual Configuration ■ Proxy Auto Configuration (PAC) File Scripts ■ Web Proxy Auto-Discovery (WPAD) ■ Third-party Tools For more information about Proxy Cache deployment, see “Proxy Cache” on page 33.
CHAPTER 3: CONFIGURING WEB BROWSERS You can view the port number for 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 Manual Proxy Configuration. 5 Click View. 6 Enter the URL or location of the Webcache in the HTTP, Security and FTP fields.
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.
CHAPTER 3: CONFIGURING WEB BROWSERS 6 Tick Go Direct if no Webcache Available if you want to configure Web browsers to directly access the Web if the main and backup Webcaches fail. Click OK. You must next set the Web browser 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 Connections tab. 4 Click LAN Settings. 5 Tick Use automatic configuration script.
Web Proxy Auto-Discovery (WPAD) 53 6 Click Reload. 7 Click OK. Web Proxy Auto-Discovery (WPAD) The Webcache and Microsoft Internet Explorer 5 (and later versions) support the Web Proxy Auto-Discovery (WPAD) protocol. This protocol enables the Web browser on client machines to automatically find and load proxy configuration information (stored in a PAC file) from a server on your network without user intervention. You cannot set up the 3Com Webcache to be used as a WPAD server.
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-Discovery Resources You can view the Internet Draft for the Web Proxy Auto-Discovery Protocol at: http://www.ietf.org/internet-drafts/draft-cooper-webi-wpad-0 0.
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
4 MANAGING THE WEBCACHE This chapter contains information about managing the Webcache using the management software that resides on the Webcache. Managing the Webcache can help you to improve the efficiency of the Webcache and therefore the overall performance of your network. It allows you to make full use of the features offered by the Webcache, and to change and monitor the way it works.
CHAPTER 4: MANAGING THE WEBCACHE Logging in as a Default User If you manage the Webcache using the Web interface or the Command Line Interface, you need to log in with a valid user name and password. The Webcache has one user name, which is listed in Table 9. You cannot create new user names for the Webcache.
Accessing the Web Interface 59 been optimized for PC screens with the desktop area set to 800 by 600 pixels. It is also recommended to set the font size to Small Fonts. 2 In the Location/Address field of the browser, enter the URL of the Webcache. This must be in the format: http://nnn.nnn.nnn.nnn:8081 where nnn.nnn.nnn.nnn is the IP address of the Webcache and 8081 is the port on which the Webcache listens.
CHAPTER 4: MANAGING THE WEBCACHE Understanding the Web Interface Figure 18 The Web Interface The Web interface is made up of four areas: ■ The Banner This is always displayed at the top of the browser window. It displays the 3Com logo and SuperStack® logo. ■ The Toolbar This is always displayed at the top of the browser window, underneath the Banner. It contains three buttons which allow you to select different views in the View Area.
The Toolbar The Toolbar 61 The Toolbar is always displayed at the top of the browser window, underneath the Banner. It contains three buttons which allow you to select different views: ■ The Summary View Click Summary to display the Summary View. This view allows you to update the latest summary information for the Webcache. ■ The Device View Click Device View to display the Device View. This view allows you to configure the physical and networking aspects of the Webcache.
CHAPTER 4: MANAGING THE WEBCACHE The Device View Navigation Tree is displayed on the left side of the browser window and allows you to perform operations for the Webcache. The Device View Information area is displayed on the right side of the browser and contains the device mimic and the Device Summary table. Device Mimic Figure 19 The Device Mimic The device mimic is a virtual, interactive representation of the Webcache.
The Toolbar ■ Web Client Blocking ■ Web Site Blocking ■ Save Configuration ■ Notepad ■ System Information 63 Device Summary A table entitled Device Summary displays the following information for the Webcache. It shows the DNS Name, Type, Software Version, Hardware Version, IP Address, MAC Address, Boot Version, Product Number, Serial Number and Up Time of the Webcache. The Help View Click Help on the Toolbar to access the Help View.
CHAPTER 4: MANAGING THE WEBCACHE The Navigation Tree The Navigation Tree is always displayed on the left side of the 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.
The Information Area Symbol 65 Behavior Click the symbol to update the Information Area with the latest summary information for the Stack and 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 the right side of the browser window.
CHAPTER 4: MANAGING THE WEBCACHE
5 SYSTEM TIME This chapter explains how to configure the system time of the Webcache.
CHAPTER 5: SYSTEM TIME What is the Network Time Protocol? The Network Time Protocol (NTP) is used to synchronize the time of client machines and servers with other well-known, highly accurate servers or reference time sources. It maintains a consistent Coordinated Universal Time (UTC) within your network which is far more accurate than the internal system clocks of client machines and prevents time drift from occurring on the Webcache.
Configuring the System Time Using the Network Time Protocol Configuring the System Time Using the Network Time Protocol 69 To configure the system time of the Webcache using the Network Time Protocol, you must enter the following information in the Getting Started wizard or Time Configuration command in the Web interface: 1 Select a timezone from the options in the Timezone drop-down list. The Webcache automatically performs daylight savings adjustments according to the timezone that you have selected.
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.
6 SECURITY This chapter contains information about ensuring that the Webcache 1000/3000 is secure. It covers the following topics: What are Passwords? ■ What are Passwords? ■ Setting Passwords ■ What is Password Recovery? ■ Enabling/Disabling Password Recovery ■ Performing Password Recovery Whenever you manage the Webcache using the Web interface or Command Line Interface, you need to log in with the admin username and password, as described in “Logging in as a Default User” on page 58.
CHAPTER 6: SECURITY You must enter the following information in both the Getting Started wizard and the Password Configuration screen: 1 Choose between the following options by clicking the appropriate radio button: ■ Do Not Change Password ■ Change Password for the Account ■ Set Admin Password to the Factory Default Setting 2 Either: ■ If you choose Do Not Change Password, the existing password will not be changed.
Performing Password Recovery 73 anyone who has physical access to the Webcache can potentially change the password and lock you out of the management interfaces. CAUTION: 3Com recommends that you leave Password Recovery enabled. If you disable it and subsequently forget the password for the admin username, you will have to return the Webcache to 3Com. To enable or disable Password Recovery using the Web interface: 1 Log in to the Web interface. 2 Click Device View on the Toolbar.
CHAPTER 6: SECURITY
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.
CHAPTER 7: CONTROLLING AND MONITORING WEB ACCESS Configuring Web Site Blocking To configure Web Site Blocking using the Web interface: 1 Log in to the Web interface. 2 Click Device View on the Toolbar. 3 Select System -> Caching -> Web Site Blocking in the Navigation Tree. 4 Check Enable Web Site Blocking.
What is Web Client Blocking? 77 to this website has been denied. If you do not agree with this site being blocked, please contact extension 1234”. To customize the response using the Web interface: 1 Click Device View on the Toolbar. 2 Select System -> Caching -> Customize Response in the Navigation Tree. 3 Enter up to 512 characters of text or HTML code in the Add This Text field that you want to add to the response screen that informs the end user that access has been denied.
CHAPTER 7: CONTROLLING AND MONITORING WEB ACCESS ■ You can configure your network into subnets and assign specific client machine MAC addresses to be provided IP addresses within specific subnets by DHCP. You 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.
What is Access Logging? 79 preventing you from using the Web interface.You can regain access by either: ■ Changing the client machine’s browser settings to remove the use of the Webcache as a proxy or ■ Using a browser on a client machine whose IP address is not blocked by Web Client Blocking to access the Web Interface.
CHAPTER 7: CONTROLLING AND MONITORING WEB ACCESS Field Description Action/Code Information on the kind of request and how it was satisfied or how it failed i.e. was the request a hit, miss or an error. Size The amount of data that was delivered to the client machine in bytes, including headers. Method The way in which the Web object was requested i.e. GET, CONNECT, TRACE. URL The URL that the client machine requested. Ident No value is returned for this field.
Viewing the Access Log 81 can change the password by clicking Change Password and entering the new password. 10 If you want to test and upload the Access Log now, click FTP Now. Enter a filename for the log and click OK. The filename can only contain alphanumeric and . (dot), - (hyphen) or _ (underscore) characters and can only be up to 32 characters in length. Clicking FTP Now will immediately FTP the currently active Access Log to the FTP server.
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.
8 SYSTEM EVENTS This chapter contains information about the system events that can occur on the Webcache 1000/3000. It covers the following topics: ■ What are System Events? ■ Email Notification ■ SNMP Traps What are System Events? System events are events that occur on the Webcache which can be reported to you. They range in significance from minor, such as Upgrade Started, to major, such as System Failure.
CHAPTER 8: SYSTEM EVENTS 4 Check Enable Email Notifcation of System Events. 5 In the SMTP IP Address field, enter the IP address of the server to which the email notifications from the Webcache will be sent. CAUTION: To use the email notification feature, you must enter the IP address of an SMTP server that does not require SMTP authentication in the SMTP IP Address field in the Email Notification screen.
SNMP Traps 85 System Failure is also indicated by a yellow Power/Self Test/System Fault LED on the front panel of the Webcache; for more information, see the “Introducing the Webcache” chapter on page 17. ■ A cache storage device has failed. 9 Click OK. SNMP Traps You can configure the Webcache to automatically generate Simple Network Management Protocol (SNMP) traps when certain significant system events occur. An SNMP trap is a message generated by the Webcache in response to a particular event.
CHAPTER 8: SYSTEM EVENTS Configuring SNMP Traps SNMP Trap Description Caching Disk Failed A cache storage device within the Webcache has failed. You have to return the unit to 3Com. System Error The Webcache can no longer function as a cache due to hardware failure. To configure SNMP Traps using the Web interface: 1 Log in to the Web interface. 2 Click Device View on the Toolbar. 3 Select System -> Management -> Events -> SNMP Traps in the Navigation Tree.
9 PERFORMANCE MONITORING This chapter contains information about monitoring the performance of the Webcache 1000/3000. It covers the following topics: What is Performance Monitoring? ■ What is Performance Monitoring? ■ Caching Performance Graphs ■ System Performance Graphs ■ I/O Performance Graphs Performance monitoring allows you to assess the caching and system performance of the Webcache via a series of easy-to-understand MRTG (Multi Router Traffic Grapher) graphs.
CHAPTER 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 updated every 5 minutes: ■ Bandwidth Saving (%) The average percentage of bandwidth savings obtained through the use of the Webcache.
System Performance Graphs ■ 89 Hit and Miss Latencies (msec) The average time per request that the Webcache takes to respond to client machine HTTP requests. The response time includes both cache hits and cache misses. A short response time indicates more efficient operation, because more content is being served from the high speed Webcache, and less from the slow World Wide Web. ■ Throughput (Kbits/sec) The average amount per second of HTTP throughput served by the Webcache.
CHAPTER 9: PERFORMANCE MONITORING To view the I/O Performance graphs: 1 Log in to the Web interface. 2 Select Performance -> Graphs 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.
10 SYSTEM DIAGNOSTICS This chapter contains information about troubleshooting the configuration and network connectivity of the Webcache 1000/3000. It covers the following topics: What are System Diagnostics? Pinging Other Devices Performing a Ping ■ What are System Diagnostics? ■ Pinging Other Devices ■ Tracing IP Addresses ■ System Log You can use the various system diagnostic capabilities of the Webcache to help you identify any problems that may occur.
CHAPTER 10: SYSTEM DIAGNOSTICS 4 In the IP Address field, enter the IP address of the device that you want to PING. Click Ping. 5 The Webcache sends a single PING request to the specified device and a message similar to the following is displayed: Starting ping, resolution of displayed time is 10 milli-seconds If the device is accessible and functioning correctly, a message similar to the following is displayed: 64 bytes from 192.156.136.22: icmp_seq=0 ttl=248 time=195.
System Log 93 1.routerc1 (140.204.20.20) 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, 24.854ms, 30.096ms 4.janeway (161.71.123.36) 27.303ms, 33.639ms If the device is not accessible, or is not functioning correctly, only the hops that worked are displayed. You can interrupt a trace route request at any time by clicking Stop.
CHAPTER 10: 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 standard protocol for reporting system events that occur on the Webcache and most other modern network devices. A syslog server allows you to capture these system events, store them and display them in a variety of formats.
System Log Viewing the System Log 95 To view the contents of the System Log using the Web interface: 1 Log in to the Web interface. 2 Click Device View on the Toolbar. 3 Select Diagnostics -> View System Log in the Navigation Tree. The System Log screen is displayed. The last 256 lines of the System Log are displayed. Click Refresh to update the information that is displayed.
CHAPTER 10: SYSTEM DIAGNOSTICS
11 SOFTWARE UPGRADE AND INSTALLATION This chapter contains information about upgrading and installing the management software of the Webcache 1000/3000.
CHAPTER 11: SOFTWARE UPGRADE AND INSTALLATION 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.
Performing a Software Upgrade 99 3 If you want the Webcache to automatically detect and download new software versions, and notify you of their availability, check Enable Automatic Software Upgrade Detection. The Webcache notifies you of the availability of new software versions via email notification; for further information, see “Email Notification” on page 83.
CHAPTER 11: SOFTWARE UPGRADE AND INSTALLATION 3Com recommends that you save your system configuration settings once the Webcache is configured and deployed within your network. Saving the configuration settings ensures that you can recover your entire system configuration if you ever need to re-install an older software version. For more information, see “Saving and Restoring Configurations” on page 103. 1 Log in to the Web interface.
Performing a Software Upgrade 101 If you selected Upgrade Later, the Finish screen is displayed. Click Finish to exit the Upgrade Software wizard. If you selected Discard Upgrade, the Finish screen is displayed. Click Finish to exit the Upgrade Software wizard. 6 Carefully read the summary information, which displays the name of the software image file, its software version and the date on which it was created. Click Finish to start the upgrade. 7 The software upgrade may take several minutes to complete.
CHAPTER 11: SOFTWARE UPGRADE AND INSTALLATION 7 The software upgrade may take several minutes to complete. The Software Upgrade Successful screen is displayed when the software upgrade has been successful. 8 Click OK to exit the Upgrade Software wizard and reboot the Webcache. This will complete the software upgrade. The Device View is displayed in the Web interface.
Saving and Restoring Configurations 103 3 Select System -> Control -> Install Software in the Navigation Tree. The first screen of the Software Installation wizard is displayed. Click Next. 4 In the Webcache Software Image field, enter the network path and filename of the software image file that you want to install. You can click Browse to search for the location of a software image file. Click Next.
CHAPTER 11: SOFTWARE UPGRADE AND INSTALLATION system configuration file includes a record of the Webcache software version that was running when the configuration was saved. The Restore Configuration operation restores the system configuration from the file to the Webcache. It checks that the system configuration being restored was created on the same Webcache software version as the one that the Webcache is running. Example You perform a software upgrade and experience problems with the Webcache.
Saving a Configuration 105 earlier software version via a software installation, you can use a matching configuration file to restore the settings. Saving a Configuration To save the current system configuration of the Webcache using the Web interface: 1 Log in to the Web interface. 2 Click Device View on the Toolbar. 3 Select System -> Control -> Save Configuration in the Navigation Tree. The Save Configuration screen is displayed. 4 Click Save.
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 screen appears. Click OK to reboot the Webcache and complete the restoration of the system configuration file. The Device View is displayed in the Web interface.
III COMMAND LINE INTERFACE Chapter 12 Command Line Interface
12 COMMAND LINE INTERFACE The Webcache 1000/3000 has a Command Line Interface that allows you to manage certain features from a terminal. You may want to use the Command Line Interface to setup the Webcache for management through the console port or over your network via Telnet. This chapter describes how to access and use the Command Line Interface.
CHAPTER 12: COMMAND LINE INTERFACE Accessing the Command Line Interface Through the Console Port To manage the Webcache using the Command Line Interface through the console port: 1 Connect the terminal or terminal emulator to the console port. ■ If you are connecting directly to the console port, you need a standard null-modem cable. ■ If you are connecting to the console port using a modem, you need a standard modem cable. The console port of the Webcache has a male 9-pin D-type connector.
Logging In To the Command Line Interface Accessing the Command Line Interface Over the Network Logging In To the Command Line Interface 111 To manage the Webcache using the Command Line Interface over a 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 with the Telnet facility.
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: ■ The Menu Area — Contains the current menu of commands. The menu can contain commands to configure the Webcache or commands to display other menus in the Command Line Interface. Each command is accompanied by a brief description of its purpose.
Understanding the Command Line Interface ■ 113 System menu This menu contains commands that allow you to view and configure information about the Webcache. Entering Commands The command area of the Command Line Interface contains a Select menu option prompt that allows you to enter the commands in the menu area. Commands are not case-sensitive. ■ To enter a simple command: At the prompt, enter the name of the command. ■ To enter multiple commands: At the prompt, enter each command in succession.
CHAPTER 12: COMMAND LINE INTERFACE ■ To display sub-menus: At the Select menu option prompt, enter the name of the menu or menus. ■ To display parent menus: At the Select menu option prompt, enter q. ■ To display the Top-level menu: Press [Esc]. Obtaining Help A Quick Guide to the Commands You can access the Command Line Interface help system at any time by entering ? at the Select menu option prompt. Table 12 describes the commands that are available in the Command Line Interface.
Getting Started Getting Started 115 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 system name for the Webcache. The name can be up to 80 characters long. The following prompt is displayed: Enter system contact: 3 Enter a system contact for the Webcache.
CHAPTER 12: COMMAND LINE INTERFACE 9 Enter a valid domain name. The following prompt is displayed: Enter DNS Server IP address [0.0.0.0]: 10 Enter a valid Domain Network System (DNS) Server IP address. The following prompt and a list of timezones is displayed: Enter the index of timezone (1-30)[14]: 11 Enter the index number of the timezone that you want the Webcache to operate in. Example Enter 7 if you want to select (T - 06:00) Central Time (US).
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) [proxy]: 17 Enter either proxy or transparent. For further information, see “Deploying the Webcache in Your Network” on page 33.
CHAPTER 12: COMMAND LINE INTERFACE ■ Specifying Basic IP Configuration Specify an IP address to be traced 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 allows you to configure the IP address, subnet mask and the default router IP address.
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 factory default settings using the initializeConfig command on the IP menu.
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 IP summary information for the Webcache using the summary command on the IP menu.
Displaying and Changing Security Information 121 If the device is accessible and functioning correctly, a message similar to the following is displayed which displays the network hops: 1.routerc1 (140.204.20.20) 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, 24.854ms, 30.096ms 4.janeway (161.71.123.36) 27.303ms, 33.
CHAPTER 12: COMMAND LINE INTERFACE Enabling and Disabling Password Recovery You can enable or disable password recovery for the Webcache using the pwdRecover command on the Security menu. For more information about password recovery, see the “Security”chapter on page 71. CAUTION: 3Com 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.
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” on page 22. You may want to initialize the Webcache if it has previously been used in a different part of your network, and its settings are incorrect for the new environment.
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. Specifying Location Details You can specify physical location details for the Webcache using the location command on the Management menu.
Displaying and Changing Webcache Information and Functions 125 To set the community string: 1 At the Top-level menu, enter: system management community The following prompt is displayed: Enter new community for user ‘admin’[private]: 2 Enter a community string for the admin user name. Displaying Summary Information You can display the summary information for the Webcache using the summary command on the System menu.
CHAPTER 12: COMMAND LINE INTERFACE ■ 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. ■ Time Since Reset Displays the time that has elapsed since the Webcache was last reset, initialized or powered-up. ■ Software Version Displays the version number of the management software currently installed on the Webcache.
IV PROBLEM SOLVING Chapter 13 Problem Solving
13 PROBLEM SOLVING This chapter contains a list of known problems and suggested solutions. It covers the following topics: Accessing the Webcache via the Console Line ■ Accessing the Webcache via the Console Line ■ Accessing the Webcache via Telnet ■ Solving Web Interface Problems ■ Solving Command Line Interface Problems ■ Solving Webcache Performance Problems The terminal or terminal emulator cannot access the Webcache.
CHAPTER 13: PROBLEM SOLVING The terminal or terminal emulator can no longer access the Webcache over the network. Check that the connections and network cabling for the LAN port are in place. If there is still a problem, try accessing the Webcache through a different port. If you can now access the Webcache, a problem may have occurred with the original port. Contact your supplier for further advice.
Solving Web Interface Problems 131 For the browser to operate the Web interface correctly JavaScript™ and Cascading Style Sheets must be enabled on your browser. These features are enabled on a browser by default. You will only need to enable them if you have changed your browser settings. You cannot access the Web interface.
CHAPTER 13: PROBLEM SOLVING problem, click in the part of the Web interface that has not displayed and repeat the above. Some of the text is not displayed in the Web interface windows. You must ensure that the Display Font Size for your System is set to Small Fonts (96 dpi). If it is set to Large Fonts, the Web interface will not display correctly. "URL not found" messages are displayed when the Contacts, Home Page, Library or Support icons in the Help View are clicked.
Solving Command Line Interface Problems 133 The System Time is inaccurate Check that: ■ The Webcache system time is configured to be set through the Network Time Protocol (NTP). ■ NTP is enabled on the Webcache. If it is enabled, ping the NTP server that you have specified to check that it is operational. If the NTP server is not functional, or you are not confident it is working correctly, try using another NTP server. ■ The timezone is set correctly.
CHAPTER 13: PROBLEM SOLVING Solving Webcache Performance Problems The performance of the Webcache is poor Check: ■ 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 personnel. As long as there is at least one working cache storage device, the Webcache will operate as a cache, but the failure of a cache storage device will degrade the performance of the Webcache.
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.
CHAPTER 13: PROBLEM SOLVING
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
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 carefully. You must read the following safety information carefully before you install or remove the unit.
APPENDIX A: SAFETY INFORMATION Important Safety Information ■ Installation and removal of the unit must be carried out by qualified personnel only. ■ The unit must be earthed (grounded). ■ The unit must be connected to an earthed (grounded) outlet to comply with European safety standards and EMC standards.
Important Safety Information 141 ■ 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 (ground). †Impédance à la terre ■ U.K. Only: If connecting a modem to the console port of the Webcache 1000/3000, only use a modem which is suitable for connection to the telecommunications system.
APPENDIX A: SAFETY INFORMATION Consignes importantes de sécurité ■ L'installation et la dépose de ce groupe doivent être confiés à un personnel qualifié. ■ Vous devez mettre l’appareil à la terre (à la masse) ce groupe. ■ Vous devez raccorder ce groupe à une sortie mise à la terre (mise à la masse) afin de respecter les normes européennes de sécurité.
Consignes importantes de sécurité 143 que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. ■ 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. ■ France et Pérou uniquement: Ce groupe ne peut pas être alimenté par un dispositif à impédance à la terre.
APPENDIX A: SAFETY INFORMATION Wichtige Sicherheitsinformat ionen ■ Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen. ■ Das Gerät muß geerdet sein. ■ Das Gerät muß an eine geerdete Steckdose angeschlossen werden, die europäischen Sicherheitsvorschriften und den Vorschriften zur EMV entspricht. ■ Netzstecker Dies muss von dem Land, in dem es benutzt wird geprüft werden.
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 öffentlichem Telefonnetzwerk gebraucht werden. Nur RJ-45-Datenanscluße, Telefonnetzsysteme or Netztelefone an diese Steckdosen anschließen.
APPENDIX A: SAFETY INFORMATION
B Cable Specifications CABLE SPECIFICATIONS AND PIN-OUTS The Webcache supports the following cable types: ■ Category 3 One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586 standard. Category 3 is voice grade cable and can only be used in Ethernet networks (10BASE-T) to transmit data at speeds of up to 10 Mbps. ■ Category 5 One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586 standard.
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 PC-AT Serial Cable PC/Terminal Cable connector: 25-pin male/female Screen TxD RxD Ground RTS CTS Shell 3 2 5 7 8 1 3 2 7 4 20 Screen RxD TxD Ground RTS DTR DSR DCD DTR 6 1 4 5 6 8 CTS DSR DCD only required if screen always required required for handshake 9-pin to 9-pin Webcache 1000/3000 Cable connector: 9-pin female PC-AT Serial Port Cable con
Pin-outs Modem Cable 9-pin to RS-232 25-pin Webcache 1000/3000 Cable connector: 9-pin female RJ-45 Pin Assignments Screen TxD RxD RTS CTS DSR Shell 3 2 7 8 6 Ground DCD DTR 5 1 4 RS-232 Modem Port Cable connector: 25-pin male 1 2 3 4 5 6 7 8 20 Screen TxD RxD RTS CTS DSR Ground DCD DTR Pin assignments are identical for 10BASE-T and 100BASE-TX RJ-45 connectors.
APPENDIX B: CABLE SPECIFICATIONS AND PIN-OUTS
C TECHNICAL SPECIFICATIONS Physical Dimensions Height: 44.45mm (1.75 in.) x Width: 482.6 mm (19.00 in.) x Depth: 610 mm (24.02 in.) (not including bulge). Weight: 13 Kg (28.66 lbs) Environmental Requirements Operating Temperature 0 ° to 40 °C (32 ° to 104 °F) Storage Temperature –10 ° to +70 °C (14 ° to 158 °F) Operating Humidity 10–95% relative humidity, non-condensing Standards EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32. Operational testing: paras 2.1, 2.2, 2.
APPENDIX C: TECHNICAL SPECIFICATIONS Standards Supported SNMP: SNMP protocol (RFC 1517) MIB-II (RFC 1213) Terminal Emulation: Telnet (RFC 854) Protocols Used for Administration: Interface MIB (RFC 1573) UDP (RFC 768) Remote Monitoring MIB (RFC 1757) IP (RFC 791) ICMP (RFC 792) TCP (RFC 793) ARP (RFC 826) TFTP (RFC 783)
D TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services. This appendix describes these services. Information contained in this appendix is correct at time of publication. For the most recent information, 3Com recommends that you access the 3Com Corporation World Wide Web site.
APPENDIX D: 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: ■ Hostname: ftp.3com.com ■ Username: anonymous ■ Password: You do not need a user name and password with Web browser software such as Netscape Navigator and Internet Explorer.
Support from 3Com ■ A list of system hardware and software, including revision levels ■ Diagnostic error messages ■ Details about recent configuration changes, if applicable 155 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 Telephone Number P.R.
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.
Returning Products for Repair Country Telephone Number Fax Number U.S.A.
APPENDIX D: TECHNICAL SUPPORT
GLOSSARY 3Com Network Supervisor 10BASE-T 100BASE-TX The 3Com umbrella management system used to manage all of 3Com’s networking solutions. The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted-pair cable. auto-negotiation A feature on twisted pair ports that allows them to advertise their capabilities for speed, duplex and flow control.
GLOSSARY DNS Ethernet Ethernet address Fast Ethernet FTP full duplex gateway half duplex Domain Name System. This system maps a numerical Internet Protocol (IP) address to a more meaningful and easy-to-remember name. When you need to access another device on your network, you enter the name of the device, instead of its IP address. A LAN specification developed jointly by Xerox, Intel and Digital Equipment Corporation.
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 (usually not larger than a floor or building). LANs are characterized by high transmission speeds over short distances (up to 1000 m).
GLOSSARY proxy cache The Webcache is connected to a Layer 2 switch in your LAN. The Web browser on each client machine in your network must be configured to explicitly direct its Web requests to the Webcache. router A router is a device on your network which is used to forward IP packets to a remote destination. An alternative name for a router is a gateway. server A computer in a network that holds the master version of a web page/object.
GLOSSARY 163 VLAN Virtual LAN. A group of location- and topology-independent devices that communicate as if they are on the same physical LAN. WAN Wide Area Network. A communications network that covers a wide area. A WAN can cover a large geographic area, and may contain several LANs within it. URL Uniform Resource Locator. The address that defines the route to a file on the web or other Internet facility. UTC Coordinated Universal Time.
GLOSSARY
INDEX Numbers 10BASE-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 analyzing the logs 81 configuring 80 squid format 79 viewing 81 accessing the Web interface 39, 58 addresses IP 45 admin user name 71 B banner 60 basicConfig command 118 blocking access client machines 77 Web sites 75 C cable modem 41 null-modem 41 pin-outs 147, 148 specifications 147 cache proxy 33 manually configuring Web browse
INDEX saving 103, 105 connecting to the live network 44 console port 20, 41 hotspot 62 contact command 123 controlling Web access 75 conventions notice icons, About This Guide 12 text, About This Guide 12 Coordinated Universal Time 68 cross-over cable 38 customizing the response 76 D default IP address 38, 40 settings 22 users 58 deploying the Webcache 49, 57 proxy cache 33 transparent cache 34 Device Mimic 62 Device Summary 63 Device View 61 diagnostics 91 dnsConfig command 118 documentation release
INDEX link speed 22 port activity 22 WAN port 21 location command 124 log, system 93 configuring 93 viewing 95 logging access 79 analyzing the logs 81 configuring 80 viewing 81 logging in password 71 user name 71 logging in as a default user 58 logout command 117 M management Command Line Interface 109 Management Information Bases 85 management software installing 102 upgrading 97 management software installation 102 performing 102 unsuccessful 102 management software upgrades configuring 98 performing 99
INDEX WAN 21 positioning the Webcache 26 power cord 26 power socket 20 power-up 31 problem solving 129 command line interface 133 Web interface 130 Proxy Auto Configuration (PAC) 50 proxy cache 33 manually configuring Web browsers 49 Proxy Auto Configuration (PAC) 50 Web Proxy Auto-Discovery (WPAD) 53 proxy mode 21 pwdRecover command 122 R rack-mounting 27 rack-mounting kit 26 rear panel 20 console port 20 LAN port 21 LEDs 21 link speed 22 port activity 22 power socket 20 WAN port 21 reboot command 1
INDEX trace route 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 V view Device 61 Help 63 Summary 61 W WAN port 21 LEDs 21 Warranty Card 26 Web access controlling 75 monitoring 75 Web browsers configuring with third-party tools 54 manual configuration 49 Pr
INDEX
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6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein.You are not responsible for enforcing compliance by third parties to this License. 7.
Copyright (C) 19yy This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
REGULATORY NOTICES FCC STATEMENT This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
