Manuel d'utilisation / d'entretien du produit Webcache 1000 (3C16115) du fabricant 3Com
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http://www.3com.com/ Part No. DUA1611-5AAA02 Published May 2001 SuperStack ® 3 W ebcache 1000 (3C16115) W ebcache 3000 (3C16116) User Guide.
3Com Corporati on 5400 Bayfront Plaza Santa Clara, California 95052-8145 Copyright © 2001, 3 Com T echnologies. All rights reserved. No part of this documentati on may be repr oduced in any form or b.
C ONTENTS A BOUT T HIS G UIDE Conventions 12 Related Documentat ion 13 Documentation Comments 13 Produc t Registration 14 IG ETTING S TARTED 1 I NTRO DUCING THE W EBCACHE What is the Webcache? 17 The .
Proxy Cache 33 T ranspar ent Cache 34 Migrating from Pr oxy Cache to T ransparent Cache Mode 35 Deploying the SuperStack 3 Firewall as a Proxy Forwar der 35 Setting Up the We bcache for Management 36 .
The Device View 61 The Help View 63 The Navigation T ree 64 The Information Area 65 5 S YSTEM T IME Configuring the System Time 67 What is the Network T ime Protocol? 6 8 Choosing a Network Time Proto.
SNMP T raps 85 Configuring SNMP T raps 86 9 P ERFORMANCE M ONITORING What is Performance Monitoring? 87 Caching Performance Graphs 87 System Performance Graphs 89 I/O Performance Graphs 89 10 S YSTEM .
III C OMMAND L INE I NTERFACE 12 C OMMAND L INE I NTERFACE Accessing the Command Line Interface 109 Accessing the Command Line Interface Th rough the Console Port 110 Accessing the Command Line Interf.
IV P ROBLEM S OLVING 13 P ROB L E M S OLVING Accessing the Webcache via the Co nsole Line 129 Accessing the Webcache via T elnet 130 Solving Web Interface Problems 130 Solving Command Line Interface P.
Returning Prod ucts for Repair 156 G LOSSARY I NDEX 3C OM E ND U SER S OFTWARE L ICENSE A GREEMENT GNU G ENERAL P UBLIC L ICENSE V ERSION 2, J UNE 1991 R EGULATORY N OTICES.
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A BOUT T HIS G UIDE 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.
12 A BOUT T HIS G UIDE Conventions T ab le 1 and T able 2 list conventions that are used thr oughout this guide. Ta b l e 1 Notice Icons Icon Notice Type Description Information note Information that .
Related Documentation 13 Related Documentation In addition to this Guide, the Webcache 1000/3000 documentation set includes the following documents : ■ Webcache 1000/3000 Online Help This online help system contains information about the Web interface operations that enable you to manage the Webcache.
14 A BOUT T HIS G UIDE ■ 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 abo ut 3Com product documentation at this e-mail address.
I G ETTING S TARTED Chapter 1 Introducing the W ebcache Chapter 2 Installing the W ebcache Chapter 3 Configuring Web Browsers.
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1 I NTR ODUCING THE W EBCACHE This chapter contain s introductory information about the Webcache 1000/3000 and how it can be used in your netw ork. It covers summaries of hardwar e and software featur.
18 C HAPTER 1: I NTRODUCING THE W EBCACHE ■ Smoother T raffic Flow T raffic surges can str ess your network and server . The Webcache can help smooth out network traffic and reduce delays in serving Web content.
Webcache — Front View Detail 19 Webcache — Fr ont View Detail Figure 1 W ebcache — Front View The above illustration shows a Webcache 3000. The Webcache 1000 contains a single Cache Stora ge Device and therefore ha s one Cache Storage Status LED on the front panel.
20 C HAPTER 1: I NTRODUCING THE W EBCACHE Webcache — Rea r View Detail Figure 2 W ebcache — Rear View WAR N I NG : WAN and LAN RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot be used as standard tradition al telephone sockets, or to connect the unit to a traditional PBX or public teleph one network.
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. WA N P o r t The W AN 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.
22 C HAPTER 1: I NTRODUCING THE W EBCACHE Ta b l e 4 LED Behavior The Link Speed LED does not change its state if the link is broken. It remains in its current stat e until a new link is estab lished. There fore Green Off, Y ellow On indicates that no link is present and that the lin k was previously 100Mbps.
Default Settings 23 If you initialize the W ebcache by selecting System -> Contro l -> Initialize in the Web interface or by entering system control initialize in the Command Line Interface, the.
24 C HAPTER 1: I NTRODUCING THE W EBCACHE.
2 I NSTALLING THE W EBCACHE This chapter contains the informat ion you need to install and set up the Webcache 1000/3000. It covers the following topics: ■ Package Contents ■ Choosing a Suitable S.
26 C HAPTER 2: I NSTALLING THE W EBCACHE Package Contents ■ W ebcache 1000 (3C16115) or Webcache 3000 (3C16116) ■ CD-ROM ■ User Guide (this guide) ■ Release Notes ■ W arranty Card ■ Power .
Rack-Mounti ng the Webcache 27 If the W ebcache is installed in a 19-inch rack or closed assembly its local air temperature may be grea ter than room ambient tempe rature. ■ The air is as free fr om dust as possible. ■ The Webcache is installed in a clean, air condition ed environment.
28 C HAPTER 2: I NSTALLING THE W EBCACHE 3 Attach a rack-mounting bracket to each side of your Webcache using 4 of the screws pr ovided for each bracket, as shown in Figure 5.
Rack-Mounti ng the Webcache 29 4 Use an adjustable bracket to secure a rack-mounting rail to the r ear of your rack as shown in Figure 6. T o do this: a Slide the adjustable bracket onto the rack-mounting rail and attach it using two of the screws pr ovided at a position suitable for your rack.
30 C HAPTER 2: I NSTALLING THE W EBCACHE 5 Attach the rack-mounting rail to the front of the rack. T o do this: a Insert two screws thr ough aligned openings in the front plate, rack and rack-mountin g rail as shown in Figure 7. b T ighten the scr ews with a suitable screwdriver .
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 fr ont of the Webcache to the rack with the captive thumbscrews, as shown in Figure 8 . Figure 8 Attaching the W ebcache to the Rack 9 Ensure that the ventilation ho les in the Webcache are not obstructed.
32 C HAPTER 2: I NSTALLING THE W EBCACHE 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.
Deploying the Webcache in Your Network 33 Deploying the Webcache in Y our Network Y ou 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 Webcac he is connected to a Layer 2 switch in your LAN.
34 C HAPTER 2: I NSTALLING THE W EBCACHE In the Pr oxy Cache deployment the Webcache is connected to an Ether net switch in your LAN. Y ou must configure the Web br owser on each client machine in your network to explicitly dir ect its Web r equests to the Webcache.
Deploying the Webcache in Your Network 35 If the W ebcache fails, the Layer 4 device will detect the failur e and redir ect Web r equests to the W AN, if the device supports Webcache health-checks, en suring that access to the Web is maintained. Deploying the Webcache in T ransp arent mode has benefits for the security of your network.
36 C HAPTER 2: I NSTALLING THE W EBCACHE Network Address T ranslation (NA T) does not apply to the DMZ port of th e Firewall so you will need to configure the W ebcache with a registered IP address.
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.
38 C HAPTER 2: I NSTALLING THE W EBCACHE Setting Up Using the Web In t er f a ce Y ou can setu p the W ebcache for management via the We b interface by using a W eb browse r on a management workstation that is c onnected to the Webcache over your test network, or dir ectly using a cross-over cable.
Setting Up the Webcache for Management 39 Accessing the We b Interface T o access th e Web interface: 1 Open the W eb browser on the management wor kstation. T o display the Web interface corr ectly , use one of the following Web browsers: ■ Microsoft Internet Explorer v4.
40 C HAPTER 2: I NSTALLING THE W EBCACHE Figure 14 User name and passwor d 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 passw ord. For further information, see “ Logging in as a Default User ” on page 5 8.
Setting Up the Webcache for Management 41 T o set up the Webcache using the Command Line Interface over a test network using T elnet, open a T elnet session using a terminal emulator by specifying the IP address of the W ebcache.
42 C HAPTER 2: I NSTALLING THE W EBCACHE b T ighten the r etaining screws on the cable to pr event it from being loosened. c Connect the other end of the cable to your terminal, terminal emulator , or modem.
Getting Started Wizard Settings 43 Getting Started Wizard Settings The following table shows the settings that you can configure in both the Web interface and Command Line Interface Getting Started wizards.
44 C HAPTER 2: I NSTALLING THE W EBCACHE Connecting the Webcache to the Live Network The following sections describe how to connect the Webcache to your live network.
Network Configuration Co ncepts 45 Network Configuration Concepts The following sections explain certain key concepts of configuring your network, which you must un derstand in order to set up the Webcache successfully . IP Addresses If you are uncertain about what IP addresses to assign your equipment, contact your network administrator .
46 C HAPTER 2: I NSTALLING THE W EBCACHE Subnets and Using a Subnet Mask Y ou can divide your IP net work into sub-networks also kno wn as subnets. Support for subnets is important becau se 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.
Network Configuration Co ncepts 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 Web c ac h e .
48 C HAPTER 2: I NSTALLING THE W EBCACHE ■ Y ou cannot enter a host name starting or ending with a . (dot) character . It must start and end with a letter or number . ■ Y ou cannot enter a host name containi ng a space character . ■ Domain Name ■ The domain name must be at least 1 character long.
3 C ONFIGURING W EB B R OWSERS This chapter contains information ab out configuring Web browsers on client machines for use in a Webcache proxy cache deployment.
50 C HAPTER 3: C ONFIGURI NG W EB B ROWSERS Y ou can view the p ort number for the Webcache by: a Logging into the Web Interface. b Selecting Device View -> System -> Caching -> Set Caching Mode. 8 Click OK . T o manually configure Netscape Navigator 4.
Proxy Auto Configuration (PAC) File Scripts 51 Y ou can only use a P AC file to configure the W eb browsers on client machines when the Webcache is operating in Proxy mode. Y ou can use the Browser Auto-Configuration screen to create a P AC file which is stored on the Webcache.
52 C HAPTER 3: C ONFIGURI NG W EB B ROWSERS 6 Ti ck Go Direct if no Webcache Available if you want to configure Web browse rs to dire ctly access the W eb if the main and ba ckup Webc aches fail. Click OK . Y ou must next set the Web br owser to read the P AC file for its settings.
Web Proxy Auto-Discovery (W PAD) 53 6 Click Reload . 7 Click OK . Web Pr oxy Auto-Discovery (WP AD) The Webcache and Microsoft Internet Explorer 5 (and later versions) support the Web Proxy Auto-Discovery (WP A D) protocol.
54 C HAPTER 3: C ONFIGURI NG W EB B ROWSERS T o config ure Internet Explorer 5 to use WP AD: 1 Open Internet Explorer . 2 From the To o l s menu, click Internet Options . 3 Click the Connections tab. 4 Click LAN Settings . 5 Ti ck Automatically detect settings .
II W EBCACHE F EATUR ES 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 Monitorin.
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4 M ANAGING THE W EBCACHE This chapter contains information ab out managing the Webcache using the management software that r esides on the Webcache. Managing the Webcache can help you to impr ove the efficiency of the W ebcache and therefor e the overall performanc e of your network.
58 C HAPTER 4: M ANAGING THE W EBCACHE Logging in as a Default User If you manage the Webcache using the We b interface or the Command Line Interface, you need to lo g in with a valid user name an d password. The Webcache has one user name, which is listed in T able 9.
Accessing the Web Interf ace 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 br owser , ent er the URL of the Webc ache.
60 C HAPTER 4: M ANAGING THE W EBCACHE Understanding the Web Interface Figure 18 The W eb 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 61 The T oolbar The T oolbar is always displayed at the top of the browser window , under neath the Banner . It contains three buttons which allow you to select different views: ■ The Summary View Click Summary to display the Summar y View .
62 C HAPTER 4: M ANAGING THE W EBCACHE The Device View Navigation T ree is displayed on the left side of the browser window and allows you to perform operations for the Web c ac h e . The Device View Information area is displayed on the right side of the browser and contains the device mimic and the Device Summary table.
The Toolbar 63 ■ We b Client Blocking ■ Web Site Blocking ■ Save Configuration ■ Notepad ■ System Information Device Su mmary A table entitled Device Summary displays the following information for the Webcac he.
64 C HAPTER 4: M ANAGING THE W EBCACHE The Navigation T ree The Navigation T ree is always displayed on the left side of the br owser window . It is a W indows ® Explorer -like interface that co ntains various icons which allow you to manage your Webcache.
The Information Area 65 The Information Area The Information Area is always displayed on the right side of the browser window . It contains informatio n about the managed Webcache. If the Summary View is curr ently selected, a table is displayed which shows summary information for the Webcache.
66 C HAPTER 4: M ANAGING THE W EBCACHE.
5 S YSTEM T IME This chap ter explains ho w to configure the system time of the Webcache. It contains the f ollowing topics: ■ Configuring the System T ime ■ What is the Network T ime Protocol? .
68 C HAPTER 5: S YST EM T IME What is the Network Time Protocol? The Network T ime Protocol (NTP) is used to synchronize the time of client machines and servers with other well-known, highly accurate servers or refer e nce time sources.
Configuring the System Time Using the Network Time Protocol 69 Configuring the System Time Using the Netwo rk Time Protocol T o config ure the system time of the W ebcache using the Network T i me Pro.
70 C HAPTER 5: S YST EM T IME A W ar ning window ap pears asking if you want to continue with the system time change. Click Ye s to continue and reset the Performance Graphs, or No to cancel the chang e.
6 S ECURITY This chapter contains information about ensuring that the W ebcache 1000/3000 is secure. It covers the following top ics: ■ What are Passwords? ■ Setting Passwords ■ What is Password.
72 C HAPTER 6: S ECURITY Y ou must enter the follow ing information in both the Getting Started wizard and the Passwor d Configuration screen: 1 Choose between the following options by clicking the ap.
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.
74 C HAPTER 6: S ECURITY.
7 C ONTR OLLING AND M ONITORING W EB A CCESS This chapter contains information about controlling the access of the users of your network through the Webcache to the Internet.
76 C HAPTER 7: C ONTROLLING AND M ONITORING W EB A CCESS Configuring Web Site Blocking T o configure Web Site Blocking using the Web interface: 1 Log in to the Web interface. 2 Click Device View on the T oolbar . 3 Select System -> Caching -> Web Site Blocking in the Navigati on T ree.
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 ” . T o customize the response using the Web interface: 1 Click Device View on the T oolbar . 2 Select System -> Caching -> Customize Response in the Navigation Tr e e .
78 C HAPTER 7: C ONTROLLING AND M ONITORING W EB A CCESS ■ Y ou can configure your network into subnet s and assign specific client machine MAC addr esses to be provided IP addr esses within specific subnets by DHCP . Y ou can then prevent specific subnet IP address ranges from accessing the Web through the W ebcache through W eb Client Blocking.
What is Access L ogging? 79 preventi ng you from usin g the W eb interface .Y ou can regain ac cess by either: ■ Changing the client machine ’ s brows er 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 W eb Interface.
80 C HAPTER 7: C ONTROLLING AND M ONITORING W EB A CCESS Configuring Access Logging T o config ure Access Logging using the W eb interface: 1 Log in to the Web interface. 2 Click Device View on the T oolbar . 3 Select System -> Caching -> Access Logging in the Navigation T ree.
Viewing the Access Log 81 can change the password by clicking Chang e Password and entering the new password. 10 If you want to test and upload the Access Log now , click FT P N o w . Enter a filename for the log and click OK . The filename can only contain alphanumeric and .
82 C HAPTER 7: C ONTROLLING AND M ONITORING W EB A CCESS 3Com r ecommends that you use W ebtre nds Log Analyzer t o analyze the access logs that the Webcache produces: http://www.
8 S YSTEM E VENTS This chapt er contains informa tion about the system events that can occur on the Webcache 1000/3000. It covers the following topics: ■ What are System Events? ■ Email Notification ■ SNMP T raps What ar e System Events? System events ar e events that occur on the W ebcache which can be reported to you.
84 C HAPTER 8: S YST EM E VENTS 4 Check Enable Email Notifcatio n of System Events . 5 In the SMTP IP Address field, enter the IP address of the se rver to which the email notifications from the W ebcache will be sent.
SNMP Traps 85 System Failure is also indicated by a yellow Power/Self T est/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 .
86 C HAPTER 8: S YST EM E VENTS Configuring SNMP Tr a p s T o config ure SNMP T r aps using the Web interface: 1 Log in to the Web interface. 2 Click Device View on the T oolbar . 3 Select System -> Management -> Events -> SNMP T raps in the Navigation T ree.
9 P ERFORMANCE M ONITORING This chapter contains information about monitoring the performance of the Webcache 1000/3000. It covers the following topics: ■ What is Performance Monitoring? ■ Caching.
88 C HAPTER 9: P ERFORMANCE M ONITORING 3 Select Caching Performance Graphs from the available graph types. Select one of the thre e available time periods, Daily , Wee k l y , or Monthly , by clicking the appropriate radio button.
System Performance Graphs 89 ■ Hit and Miss Latencies (msec) The average time per request that the Webcache takes to r espond to client machine HTTP requests.
90 C HAPTER 9: P ERFORMANCE M ONITORING T o view the I/O Perfo rmance graphs: 1 Log in to the Web interface. 2 Select Performance -> Graphs in the Navigation T ree.
10 S YSTEM D IAGNOSTICS This chapter contain s information about troubleshooting the configuration and net work connectivity of the Webcache 1000/3000.
92 C HAPTER 10: S YSTEM D IAGNOSTICS 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 r equest to the specified devi.
System Log 93 1.routerc1 (140.204.20.20) 1.292ms, 1.343ms , 1.810ms 2.BW-RTR-4.EUR.3Com.COM (161.71.21.4 5) 26.027ms, 27.156ms, 44.902ms 3.BW-RTR-1.EUR.
94 C HAPTER 10: S YSTEM D IAGNOSTICS 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 pr otocol for reporting system events that occur on the Webcache and most other modern network devices.
System Log 95 Viewing the System Log T o view the contents of the System Log using the Web interface: 1 Log in to the Web interface. 2 Click Device View on the T oolbar . 3 Select Diagnostics -> V iew System Log in the Naviga tion T ree . The System Log scr een is displayed.
96 C HAPTER 10: S YSTEM D IAGNOSTICS.
11 S OFTWAR E U PGRADE AND I NSTALLATION This chapter contain s information about u pgrading and installing the management software of the W ebcache 1000/3000.
98 C HAPTER 11: S OFTWARE U PGRA DE AND I NSTALLATION 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 .
100 C HAPTER 11: S OFTWARE U PGRADE AND I NSTALLATION 3Com recommends that you save your system configuration settings once the Webcache is configured and deployed within your network. Saving the configuration setting s ensures that yo u can recover your entire system configuration if you ever need to re-install an older softwar e version.
Performing a Software Upgrade 101 If you selected Upgrade L ater , the Finish screen is displayed. Click Finish to exit the Upgrade Software wizard. If you selected Discard Upgrade , the Finish scr een is displayed. Click Finish to exit the Upgrade Softwa re wizar d.
102 C HAPTER 11: S OFTWARE U PGRADE AND I NSTALLATION 7 The software upgrade may take several minutes to complete. The Software Upgrade Successful sc reen is displayed when the softwar e upgrade has been successful. 8 Click OK to exit the Upgrade Software wizard and reboot the Webcache.
Saving and Restoring Configurations 103 3 Select System -> Control -> Install Softwar e in the Navigation T ree. The first screen of the Softwar e Installation wizard is displayed. Click Next . 4 In the Webcache Software Image field, enter the network path and filename of the softwar e image file that you want to install.
104 C HAPTER 11: S OFTWARE U PGRADE AND I NSTALLATION system configuration file includes a recor d of the Webcache softwar e version tha t was running when the configu ration was saved. The Restore Configuration operatio n restor es the system configurat ion from the file to 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 T o save the current system configuration of the Webcache using the W eb interface: 1 Log in to the Web interface.
106 C HAPTER 11: S OFTWARE U PGRADE AND I NSTALLATION CAUTION: Y ou cannot restore a system configuration file which was created on a different software version to th e version that the Webcache is currently running . 5 Click Restore . The r estore process be gins.
III C OMMAND L INE I NTERFACE Chapter 12 Command Line Interface.
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12 C OMMAND L INE I NTERFACE The Webcache 1000/3000 has a Command Line Interface that allows you to manage certain features f rom a terminal. Y ou may want to use the Command Line Interface to setup the Webcache for management through the console port or over your network via T elnet.
110 C HAPTER 12: C OMMAND L INE I NTERFACE Accessing the Command Line Interface Through the Console Port T o man age the Webcache using the Command Line Interface through the console port: 1 Connect the terminal or terminal emulato r to the console po rt.
Logging In To the Command Line Interface 111 Accessing the Command Line Interface Over the Network T o manage the Webcache using the Command Line Interface over a network using T elnet, open a T e lnet session using a terminal emulator by specifying the IP address of the W ebcache.
112 C HAPTER 12: C OMMAND L INE I NTERFACE Understanding the Command Line Interface Once you log in to the Command Line Interface, the T op-level menu is displayed as shown below: Figure 20 The T op-level Menu The Command Line Interface is made up of two areas: ■ The Menu Area — Contains the cu rrent menu of commands.
Understanding the Command Line Interface 113 ■ System menu This menu contains commands that allow you to view an d configure information about the Webcache. Entering Commands The command area of the Command Line Interface contai ns a Select menu option prompt that allows you to enter the commands in the menu area.
114 C HAPTER 12: C OMMAND L INE I NTERFACE ■ T o display sub-menus: At the Select menu option prompt, enter the name of the menu or menus. ■ T o display parent menus: At the Select menu option p rompt, enter q . ■ T o display the T op-level menu: Press [Esc].
Getting Started 115 Getting Started The Getting Started comman d allows you to quickly configure or view basic setup information for the Webcache. T o config ure basic setup information: 1 At the T op-level menu, enter: gettingStarted The following prompt is displayed: Enter system name: 2 Enter a system name for the Webcache.
116 C HAPTER 12: C OMMAND L INE I NTERFACE 9 Enter a valid do main 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.
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 (prox y, transparent) [proxy]: 17 Enter either proxy or transparent .
118 C HAPTER 12: C OMMAND L INE I NTERFACE ■ Specify an IP address to be traced Specifying Basic IP Configuration Y ou can use the basicConfig command on the IP menu to configure the IP stack of the W ebcache. This will allow you to manage the Webcache over IP via the CLI or W eb interface.
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) Se rver IP address.
120 C HAPTER 12: C OMMAND L INE I NTERFACE 64 bytes from 192.156.136.22: icmp_s eq=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.
Displaying and Changing Security Information 12 1 If the device is accessible and f unctioning 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.
122 C HAPTER 12: C OMMAND L INE I NTERFACE Enabling and Disabling Password Recovery Y ou can enable or disable password r ecovery for the Webcache using the pwdRecover command on the Securi ty menu. For more information about password recovery , see the “ Security ” chapter on page 71.
Displaying and Changing Webcache Information and F unctions 123 2 Enter yes if you wish to pr oceed, or no if you want to stop the initialization. What Happens During an Initialization? Initializing the Webcache r eturns it to its default (factory) settings; for more information see “ Default Settings ” on page 22.
124 C HAPTER 12: C OMMAND L INE I NTERFACE T o specify the contact name details: 1 At the T op-level menu, enter: system management contact The following prompt is displayed: Enter system contact [<contact name>]: 2 Enter a system con tact for the Webcache.
Displaying and Changing Webcache Information and F unctions 125 T o set the community st ring: 1 At the T op-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.
126 C HAPTER 12: C OMMAND L INE I NTERFACE ■ Contact Displays the details of a pers on 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.
IV P RO B L E M S OLVING Chapter 13 Problem Solving.
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13 P RO B L E M S OLVING This chapter cont ains a list o f known problems and suggested so lutions. It covers the following topics: ■ Accessing the Webcache via the Console Line ■ Accessing the We.
130 C HAPTER 13: P ROBLEM S OLVING The terminal or terminal emulator can no longer access th e Webcach e over the network. Check that the co nnections and network cabling for the LAN por t are in place. If there is still a problem, try accessing the We bcache through a differ ent port.
Solving Web In terface Problems 13 1 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. Y ou will only need to enable t hem if you have changed your browser settings.
132 C HAPTER 13: P ROBLEM S OLVING problem, click in the part of the Web interface that has not displayed and re peat the above. Some of the text is not displayed in the Web interface windows. Y ou must ensure that the Display Font Size for your System is set to Small Fonts (96 dpi) .
Solving Command Line Interface Problems 133 The System Time is inaccurate Check that: ■ The Webcache system time is configur ed to be set through the Network T ime Protocol (NTP). ■ NTP is enabled on the W ebcache. If it is enabled, ping the NTP server that you have specified to check that it is operational.
134 C HAPTER 13: P ROBLEM S OLVING Solving Webcache Performance Problems The performance of the Webcache is poor Check: ■ Whether any of the ca che storage devices have failed. Examine the front panel LEDs to ensur e there ar e no faults found. If there ar e, contact 3Com support personnel.
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 t he Webcache.
136 C HAPTER 13: P ROBLEM S OLVING.
V A PPENDICES AND I NDEX Appendix A Safety Information Appendix B Cable Specifications and Pin-outs Appendix C T echnical Specifications Appendix D T echnical Support Glossary Index.
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A S AFETY I NFORMATION Y ou must read the following safety information befor e carrying out any installation or removal of components, or any maintenance pr ocedures on the Webcache 1000/3000. WAR NI N G : Warnings contain directions that you must follow for your personal safety .
140 A PPENDIX A: S AFETY I NFORMATION Important Safety Information ■ Installation and r emoval of the unit must be carried out by qualified personnel only . ■ The unit must be earthed (gr ounded). ■ 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 power ed from IT † supplies. If your supplies are of IT type, this unit must be power ed by 230V (2P+T) via an isolation transformer ratio 1:1, with the secondary connection point labelled Neutral, connected d irectly to earth (gr ound).
142 A PPENDIX A: S AFETY I NFORMATION Consignes importantes de s é curit é ■ L'installation et la d é pose de ce gr oupe doivent ê tre confi é s à un personnel qualifi é . ■ V ous devez met tre l ’ appar eil à la terr e ( à la masse) ce groupe.
Consignes importantes de s é curit é 143 que si l' é quipement auquel il est raccord é fonctionne dans les m ê mes 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 entr é e d'appareil EN60320/CEI 320.
144 A PPENDIX A: S AFETY I NFORMATION Wichtige Sicherheitsinformat ionen ■ Die Installation und der Ausbau des Ger ä t s darf nur durch Fachp ersonal erfolgen.
Wichtige S icherheitsinfor mationen 145 Bezeichnung Neutral tragen. † Imp é dance à la terre. WA RNHINWEIS: RJ-45-Porte. Diese Porte sind gesch ü tzte Datensteckdosen.
146 A PPENDIX A: S AFETY I NFORMATION.
B C ABLE S PECIFICATIONS AND P IN - OUTS Cable Specifications Th e Webcache supports the following cable types: ■ Category 3 One of five grades of T wisted Pair (TP) cabling defined by the EIA/TIA-586 standard. Category 3 is voice grade cable and can only be used in Ether net networks (10BASE- T) to transmit data at speeds of up to 10 Mbps.
148 A PPENDIX B: C ABLE S PE CIFICATIONS AND P IN - OUTS Pin-outs Null-Modem Cable 9-pin to RS-232 25-pin PC-A T Seria l Cable 9-pin to 9-pin Screen TxD RxD Ground RTS CTS DSR DCD DTR Screen RxD TxD G.
Pin-outs 149 Modem Cable 9-pin to RS-232 2 5-pin RJ-45 Pin Assignments Pin assignments are identical for 10BASE-T and 100BASE-TX RJ-45 connectors. T able 13 Pin Assignments Screen TxD RxD RTS CTS DSR .
150 A PPENDIX B: C ABLE S PE CIFICATIONS AND P IN - OUTS.
C T ECHNICAL S PECIFICATIONS 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).
152 A PPENDIX C: T ECHNICAL S PECIFICATIONS Standards Supp orted SNMP: SNMP protocol (RFC 1517) MIB-II (RFC 1213) Interface MIB (RFC 1573) Remote Monitoring MIB (RFC 1757) T erminal Emul ation: T elne.
D T ECHNICAL S UPPORT 3Com provides easy access to technical support info rmation through a variety of services. This appendix describes these services. Information contained in this appendix is corr ect at time of publication. For the most recent information, 3Com recommends that you access the 3Com Corporation World W ide Web site.
154 A PPENDIX D: T ECHNICAL S UPPORT 3Com F TP Site Download drivers, patches, software, and MIBs across the Inter net from the 3Com public F TP site. This service is available 24 hours a day , 7 days a week. T o connect to the 3Com F TP site, enter the following information into your F TP client: ■ Hostname: ftp.
Support from 3Com 155 ■ A list of system har dware and softwar e, including revision levels ■ Diagnostic error messages ■ Details about recent configuration changes, if applicable Here is a list of worldwide technical telephone support numbers. These numbers are corr ect at the time of publication.
156 A PPENDIX D: T ECHNICAL S UPPORT Returning Products for Repair Before you send a product directly to 3Com for r epair , you must first obtain an authorizat ion number . Products sent to 3 Com without authorization numbers will be r etur ned to the sender unopened, at the sender ’ s expense.
Returning Products for Repair 157 U.S.A. and Canada 1 800 NET 3Com (1 800 638 3266) Enterprise Customers: 1 800 876 3266 1 408 326 7120 (not toll-free) Country Telephone Number Fax Number.
158 A PPENDIX D: T ECHNICAL S UPPORT.
G LOSSARY 3Com Network Supervisor The 3Com umbrella management system used to manage all of 3Com ’ s networking solutions. 10BASE-T The IEEE specification fo r 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. 100BASE-TX The IEEE specification fo r 100 Mbps Fast Ether net over Category 5 twisted-pair cable.
160 G LOSSARY DNS Domain Name System. This system maps a numerical Internet Protocol (IP) addr ess to a more meaningful a nd easy-to-r emember name. When you need to access another device on your network, yo u enter the name of the device, instead of its IP address.
G LOSSARY 161 with periods (full-stop s), 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 (hub s and switches) that cover a relatively small geographic area (usually not larger than a floor or building).
162 G LOSSARY proxy cache The W ebcache is connected to a Layer 2 switch in your LAN. The Web browser on each client machine in your network must be configu red to explicitly direct its W eb requests to the Webcache. rou te r A router is a device on your network which is used to for ward IP packets to a remote destination .
G LOSSARY 163 VLAN Virtual LAN. A group of location- and topology-in dependent devices that communicate as if they ar e on the same physical LAN. WA N W ide Area Network. A communications network that covers a wide area. A W AN can cover a large geog raphic area, and may contain several LANs within it.
164 G LOSSARY.
I NDEX 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 c.
166 I NDEX saving 1 03, 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 G uide 12 text, About Th.
I NDEX 167 link speed 22 port activity 22 W AN 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 passwo.
168 I NDEX WA N 2 1 positioning the Webcache 26 power cor d 26 power socket 20 power -up 31 problem solving 129 command line interface 133 Web interface 130 Proxy Auto Configuration (P AC) 50 proxy ca.
I NDEX 169 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 up.
170 I NDEX.
3C OM E ND U SER S OFTWARE L ICENSE A GREEMENT IMPORT ANT : Read Before Using This Product YOU SHOULD CAREFULL Y READ THE FOLLOWING TERMS AND CONDITIONS BEFORE USING THIS PRODUCT . IT CONT AI NS SOF TWARE, THE USE OF WHICH IS LICENSED BY 3COM CO RPORA TIO N ( “ 3COM ” ) TO ITS CUSTOMERS FOR THEIR USE ONL Y AS SET FORTH BELOW .
be affected or impaired and a valid, legal and enforceable provision of similar intent and economic impact shall be substituted therefor. ENTIRE AGREEMENT : This License Agreement sets forth the entir.
medium, provided that you conspicuous ly and appropriately publish on each copy an appropriate copyrigh t notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Pr ogram a copy of this License along with the Program.
6. Each time you redist ribute 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 rec ipients' exercise of the rights granted herein.
<one line to give the program's name and a brief idea of what it does.> Copyright (C) 19yy <name of autho r> This program is free software; you can redistr ibute it and/or modify it u.
R EGULATORY N OTICES FCC S TATEMENT This equipment has been tested and found to comply with the limits for a Class A digital devi ce, pursuant to part 15 of the FCC rules. These limits are designed to pro vide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté 3Com Webcache 1000 (3C16115) c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du 3Com Webcache 1000 (3C16115) - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation 3Com Webcache 1000 (3C16115), vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le 3Com Webcache 1000 (3C16115) va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le 3Com Webcache 1000 (3C16115), mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du 3Com Webcache 1000 (3C16115).
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le 3Com Webcache 1000 (3C16115). Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei 3Com Webcache 1000 (3C16115) ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
