3Com 3CRWE554G72TU User Guide

3Com 3CRWE554G72TU Manual

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  • 3Com 3CRWE554G72TU | User Guide - Page 1
    OfficeConnect® Wireless 11g Cable/DSL Router User Guide 3CRWE554G72T 3CRWE554G72TU http://www.3com.com/ Part No. DUA0554-TAAA02 Published November 2004
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    any time. If there is any software on removable media described in this User Guide. Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries. 3Com, OfficeConnect and the 3Com logo are registered trademarks of 3Com
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    Convention 7 Conventions 8 Feedback about this User Guide 8 Related Documentation 9 1 INTRODUCING THE ROUTER OfficeConnect Wireless 11g Cable/DSL Router 11 Router Advantages 13 Package Contents 13 Minimum System and Component Requirements 14 Front Panel 14 Rear Panel 16 2 HARDWARE INSTALLATION
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    Disabling PPPoE and PPTP Client Software 28 Disabling Web Proxy 28 4 RUNNING THE SETUP WIZARD Accessing the Wizard 29 Password 32 Time Zone 33 WAN Settings 33 LAN Settings 40 DHCP 40 Wireless Settings 41 Summary 42 5 ROUTER CONFIGURATION Navigating Through the Router Configuration Pages 45 Main Menu
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    98 Usage 99 Logs 100 Support/Feedback 100 Support 100 Feedback 101 6 TROUBLESHOOTING Basic Connection Checks 103 Browsing to the Router Configuration Screens 103 Connecting to the Internet 104 Forgotten Password and Reset to Factory Defaults 105 Wireless Networking 105 Replacement Power Adapters
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    Address and Subnet Mask? 115 DHCP Addressing 115 Static Addressing 115 Auto-IP Addressing 115 C TECHNICAL SPECIFICATIONS D SAFETY INFORMATION E END USER SOFTWARE LICENSE AGREEMENT F ISP INFORMATION GLOSSARY INDEX REGULATORY NOTICES FOR THE WIRELESS 11G CABLE/DSL ROUTER Industry Canada - Class B 143
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    information in the release note. Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format (PDF) on the 3Com World Wide Web site: http://www.3com.com Naming Convention Throughout this guide, the OfficeConnect Wireless 11g Cable/DSL Router is referred to as the
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    software button names. Examples: From the Help menu, select Contents. Click OK. Feedback about this Your suggestions are very important to us. They will help make our User Guide documentation more useful to you. Please e-mail comments about this document to 3Com at: [email protected]
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    Conventions 9 Example: ■ OfficeConnect Wireless 11g Cable/DSL Router User Guide ■ Part Number DUA0554-TAAA02 ■ Page 24 Do not use this e-mail address for technical support questions. For information about contacting Technical Support, please refer to the Support and Safety Information sheet. Related
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    10 ABOUT THIS GUIDE
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    user, the same power, flexibility, and protection that has been available only to large corporations. Now, you can network the computers in your office, connect them all to a single Internet outlet, and harness the combined power of all of your computers. OfficeConnect Wireless 11g Cable/DSL Router
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    network (Figure 2), it becomes your connection to the Internet. Connections can be made directly to the Router, or to an OfficeConnect Switch or Hub, expanding the number of computers you can have in your network. Figure 2 Example Network Using a Wireless 11g Cable/DSL Router Wireless 11g Cable/DSL
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    the following items: ■ One OfficeConnect Wireless 11g Cable/DSL Router ■ One power adapter for use with the Router ■ Four rubber feet ■ One Ethernet cable ■ One CD-ROM containing the Router Discovery program and this User Guide ■ Installation Guide ■ One Support and Safety Information Sheet ■ One
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    to be connected to the four-port switch on your Router. ■ An 802.11b or 802.11g wireless NIC. ■ A cable modem or DSL modem with an Ethernet port (RJ-45 connector). ■ An active Internet access account. ■ A Web browser that supports JavaScript, such as Netscape 4.7 or higher, Internet Explorer 5.0 or
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    is enabled. If the LED is flashing, data is being transmitted or received. If the LED is off, the Wireless LAN has been disabled in the Router, or there is a problem. Refer to Chapter 6 "Troubleshooting". 4 Four LAN Status LEDs Green (100 Mbps link) / yellow (10 Mbps link) If the LED is on, the link
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    problem (refer to Chapter 6 "Troubleshooting"). The rear panel (Figure 4) of the Router contains four LAN ports, one Ethernet Cable/DSL port, a power adapter OK LED, and a power adapter socket. Figure 4 Router - Rear Panel 6 Wireless
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    which they are connected and the type of cable used. 10 Four 10/100 LAN ports Using suitable RJ-45 cable, you can connect your Router to a computer, or to any other piece of equipment that has an Ethernet connection (for example, a hub or a switch). The LAN ports will automatically set
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    18 CHAPTER 1: INTRODUCING THE ROUTER
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    guide you through a basic installation of the Router, including: ■ Connecting the Router to the Internet. ■ Connecting the Router to your network. ■ Setting up your computers for networking with the Router to the wireless computers that will connect to the Router. A suitable location might be
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    side of the case is not restricted. 3Com recommends you provide a minimum of 25 mm (1 in.) clearance. Using the Rubber Feet Use the four self-adhesive rubber feet to prevent your Router from moving around on your desk or when stacking with other flat top OfficeConnect units. Only stick the feet to
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    Router Before you install and configure your Router, you need the following additional information. If you do not have this information, contact your Internet Service need a User Name and Password: PPPoE User Name PPPoE Password PPPoE Service Name You only need a PPPoE Service Name if
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    HARDWARE INSTALLATION If your ISP allocates fixed or static IP information, you need the following information: IP Address Subnet Mask Default Router address DNS address If your ISP allocates IP information dynamically over a protocol other than PPPoE, you do not need any further
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    2 1 LAN Your PC Wireless Users To use your Router to connect to the Internet Router to communicate with the Internet. 3Com recommends that you perform the initial Router configuration from a computer that is directly connected to one of the LAN ports. If you configure the Router from a wireless
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    24 CHAPTER 2: HARDWARE INSTALLATION To communicate wirelessly with your Router, your wireless NIC should be set as follows: ■ Encryption - none ■ Service Area Name/SSID - 3Com ■ Channel - 11
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    to allow this, follow the instructions in this chapter. If your computers are configured with fixed or static addresses and you do not wish to change this, then you should use the Discovery program on the Router CD-ROM to detect and configure your Router. Refer to Appendix A for information
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    26 CHAPTER 3: SETTING UP YOUR COMPUTERS Figure 6 Local Area Properties Screen 6 Ensure that the options Obtain an IP Address automatically, and Obtain DNS server address automatically are both selected as shown in Figure 7. Click OK. Figure 7 Internet Protocol (TCP/IP) Properties Screen 7 Restart
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    Obtaining an IP Address Automatically 27 Windows XP If you are using a Windows XP computer, use the following procedure to change your TCP/IP settings: 1 From the Windows Start menu, select Control Panel. 2 Click on Network and Internet Connections. 3 Click on the Network Connections icon. 4 Double
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    Connection option. Figure 8 Internet Properties Screen Disabling Web Proxy You may wish to remove the PPPoE client software from your computer to free resources, as it is not required for use with the Router. Ensure that you do not have a web proxy enabled on your computer. Go to the Control Panel
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    your Web browser (Netscape Navigator 4.7 or higher, Internet Explorer 5.0 or higher, or Mozilla 1.2.1 or higher). To use the Setup Wizard: 1 Ensure that you have at least one computer connected to the Router. Refer to Chapter 2 for details on how to do this. 2 Launch your Web browser on the computer
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    30 CHAPTER 4: RUNNING THE SETUP WIZARD Figure 10 Router Login Screen 5 If the password is correct, the Country Selection screen will appear. Select the country you wish to configure the Router for, then click Apply. (Figure 11) If your purchased your Router in the United States, you do not see this
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    The Welcome screen will appear (Figure 12). Select the Wizard tab and click Wizard. or ■ If your Router has not been configured before, the Wizard will launch automatically (refer to Figure 13). 7 Click Next. 8 You will be guided step by step through a basic setup procedure. Figure 12 Welcome Screen
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    14) appears, type the Old Password, then a new password in both the New Password and Confirm Password boxes. 3Com recommends entering a new password when setting up the Router for the first time. The Router is shipped from the factory with a default password, admin. 1. Password is case sensitive.
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    so that you can change your settings in the future. Click Next to display the Time Zone setup screen (Figure 15). Time Zone Figure 15 Time Zone Screen Select your time zone from the pull- Mode window allows you to set up the Router for the type of Internet connection you have. Before setting up your
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    see "Internet Settings" on page 65. PPPoE Mode Figure 17 PPPoE Screen To setup the Router for use with a PPP over Ethernet (PPPoE) connection, use the following procedure: 1 Enter your PPP over Ethernet user name in the PPPoE User Name text box. 2 Enter your PPP over Ethernet password in the PPPoE
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    anything in this box if your ISP does not require a service name. 4 Enter the MTU value supplied by your ISP to "LAN Settings" on page 40 for more information. Dynamic IP Address Mode To setup the Router for use with a dynamic IP address connection: 1 Select the ISP provides configuration
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    address manually and enter the values for a MAC address if required (Figure 19). If the computer you are now using is the one that was previously connected directly to the cable modem, choose Yes, please clone the MAC address from the PC I'm currently using. Static IP Mode To setup the Router for
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    Next. PPTP Mode Figure 21 PPTP Mode Screen To setup the Router for use with a PPTP connection, use the following procedure: 1 Enter your PPTP server address in the PPTP Server Address text box. 2 Enter your PPTP user name in the PPTP User
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    38 CHAPTER 4: RUNNING THE SETUP WIZARD 6 Select an idle time from the Maximum Idle Time drop-down list. This is the amount of time without Internet activity that you want to allow before the Router ends the PPTP session. 7 Check all of your settings, and then click Next. Figure 22 displays. Figure
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    L2TP Mode Screen Accessing the Wizard 39 To set up the Router for use with an L2TP connection, use the following procedure: 1 Enter your L2TP server address in the L2TP Server Address text box. 2 Enter your L2TP user name in the L2TP User Name text box. 3 Enter your L2TP password in the L2TP
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    you to change the IP address and subnet mask. DHCP The Router contains a Dynamic Host Configuration (DHCP) server that can automatically configure the TCP/IP settings of every computer on your network. Figure 25 DHCP Server Setup Screen To activate the DHCP Server option, select Enable the DHCP
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    configuration will result in communication between the Router and your computer being lost. This is why 3Com strongly recommends that you configure the Router from a wired computer. It is very important that you set up your wireless clients to use the same Service Area Name or SSID as the one
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    as this may be useful if you experience problems with your clients. Summary Figure 27 Configuration Summary Screen When you complete the Setup Wizard, a configuration summary will display. 3Com recommends that you verify the configuration information of the Router and then print this page for your
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    , you may need to reconfigure the computer you are using in order to make contact with the Router again. Your Router is now configured and ready for use. For information on improving your Wireless network security see "Wireless Settings" on page 51. See Chapter 5 for a detailed description of the
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    44 CHAPTER 4: RUNNING THE SETUP WIZARD
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    appear in the main part of the screen. ■ Welcome - displays the firmware version of the Router, allows you to change your password, and launch the Wizard ■ LAN wireless network. ■ Internet Settings - sets up Internet addressing modes such as PPPoE and PPTP connections, allows you to clone the Router
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    Security. ■ Status and Logs - displays the current status and activity logs of the Router. ■ Support/Feedback - contains a comprehensive online help system and allows you to provide 3Com with feedback on your Router. Option Tabs Each corresponding menu page may also provide sub-sections which are
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    For example, you would be warned if you had disabled wireless networking or wireless encryption. Password Figure 30 Password Screen Changing the Administration Password You have forgotten your password you need to reset the Router. See "Forgotten Password and Reset to Factory Defaults" on page 105
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    48 CHAPTER 5: ROUTER CONFIGURATION Wizard Figure 31 Wizard Screen Click WIZARD... to launch the configuration wizard. Refer to Chapter 4 for information on how to run the wizard. LAN
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    use 3Com NBX telephones, enter the IP address of the NBX call processor at 3Com NBX wireless clients. DHCP Clients List Figure 33 DHCP Clients List Screen The DHCP Clients List provides details on the devices that have received IP addresses from the Router. The list is only created when the Router
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    50 CHAPTER 5: ROUTER CONFIGURATION ■ IP address - card. ■ Client Type - Whether the client is connected to the Router by wired or wireless connection. ■ Fix - This box is checked if the IP address add Fixed Mappings so that the Router allocates an IP address chosen by you when it encounters a
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    Wireless Settings 51 Figure 34 DHCP Fixed Mapping Setup Screen You only need to create Fixed Mappings for devices that need a specific IP address. For devices that do not need a specific IP address, the Router will automatically allocate addresses. To add a Fixed Mapping: 1 Enter the IP Address
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    to either the Internet or other PCs on your Wired or Wireless LAN through this Router. Channel Selection Select a number from the drop-down list to specify which Channel the Router will transmit and receive on. If another access point or Router nearby is using the same Channel as you, there will be
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    vendor. By default the Router uses the name "3Com". 3Com recommends that you change the default name. In order that your wireless computers can connect to the Router, you must: ■ Use Infrastructure Mode, not Ad hoc Mode. ■ Have the same Service Area Name as the Router. ■ Have the same Channel
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    with user configurable fixed keys. WPA provides a higher level of security, provided by its longer key and dynamic changes made to the key over time. 3Com recommends that you use WPA with any clients which support it. If you enable encryption on the Router, you must reconfigure your wireless PCs
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    Router and the client. During this dialog, a new key is agreed, making it more difficult to eavesdrop on wireless user before they join the network, refer to "Using Enterprise Mode" on page 55. ■ To set up the pre-shared key manually as a 256-bit series of hexadecimal digits, refer to "Using Manual
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    56 CHAPTER 5: ROUTER CONFIGURATION 6 Select the Modify button to save the changes and return to the Encryption screen, or select Close to exit without saving the changes. 7 If required, repeat steps 2 to 6 for a Secondary RADIUS Server. 8 Click Apply to generate the key. Using Manual Pre-Shared Key
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    Wireless Settings 57 Using Pre-Shared Passphrase Figure 38 WPA Encryption Screen - Pre-Shared Passphrase To set up Pre-Shared Passphrase as the WPA Type: 1 Select
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    58 CHAPTER 5: ROUTER CONFIGURATION Encryption Keys Figure 39 128 bit Encryption Keys Screen - WEP configuration data. There can be up to 4 keys and each key can be as long as 26 digits. The Router also offers a number of methods for converting plain text into hex keys. The text is much easier to
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    method allows you to manually enter hex keys. Virtually all manufacturers support this scheme. Enter a two digit hexadecimal number in every box. Hexadecimal numbers are formed from 0-9 and A-F. ■ 3Com Encryption String - This method is supported by 3Com Wireless products. The string can contain
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    A higher level of security can be achieved for your wireless network if, in addition to using encryption, you specify that only certain wireless computers can connect to the Router. By default, any wireless computer that has the same Service Area Name/SSID, channel and encryption settings as the
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    operating, and have the same Service Area Name/SSID, channel and encryption settings as the Router. You will find this screen easier to use if you set up and make a note of all of your wireless PC's on your network first. You may also add the entries manually if you know the MAC address
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    62 CHAPTER 5: ROUTER CONFIGURATION Modifying a MAC Address To modify a MAC address from the 43 MAC Address Table Click Close to discard all changes. Deleting a MAC Address The connection rights for a Wireless PC listed in the table can be removed by pressing Delete for that entry in the table. Once
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    client list will grow to a maximum of 32 (the maximum number of wireless devices that the Router can support). WDS Figure 45 WDS Screen The Router supports the Wireless Distribution System (WDS) repeater mode. WDS repeating enables one or more Access Points to rebroadcast received signals to extend
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    Figure 46 Profile Screen Some 3Com Wireless Network Adapters allow you to import Wireless configurations via a 'profile'. The Router can generate a profile so that you do not need to configure your Wireless PCs manually. The profile contains three items as follows: ■ Service Area Name/SSID of the
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    PC and imported into the 3Com Wireless Network Adapter. For instructions on how to import a profile, refer to the User Guide that accompanies your 3Com Wireless Network Adapter(s). If, once the profile is imported, the Wireless Network Adapter cannot connect to the Router, check that the adapter is
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    CONFIGURATION When you install the Router, you will not need to use the PPPoE software on your PC. 4 PPTP (DSL or Cable) PPTP is only used by some European providers. If the installation instructions that accompany your modem ask you to setup a dialup connection using a PPTP VPN tunnel then select
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    Internet Settings 67 Static IP Address Figure 47 Connection Parameters Screen - Static IP To setup the Router for use with a Static IP address connection: 1 Select Static IP Address (to be specified manually) in the IP Allocation Mode field (Figure 47). 2 Enter your IP Address in the IP Address text
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    not displayed on this screen, but may be viewed on the Status screen (click on Status and Logs on the left hand menu bar). To setup the Router for use with a dynamic IP address connection: 1 Select Dynamic IP Address (automatically allocated) in the IP Allocation Mode field. (Figure 48) 2 Enter your
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    directly to your modem. ■ Enter a new MAC address manually - Use this option if you want to specify a new MAC address. Enter the new MAC address. 5 Check all settings and click Apply. PPP over Ethernet Figure 49 PPPoE Setup Screen To setup the Router for use with a PPP over Ethernet connection, use
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    5: ROUTER CONFIGURATION 4 Enter your PPP over Ethernet user name in the PPPoE User Name text box. 5 Enter a password in the PPPoE Password text box. 6 Enter your PPP over Ethernet service name in the PPPoE Service Name text box. Not all ISPs require a PPPoE service name. Only enter a service name
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    Internet Settings 71 To setup the Router for use with a PPTP connection, use the following procedure: 1 Server Address text box (this is typically the address of your modem). 3 Enter your PPTP user name in the PPTP User Name text box. 4 Enter your password in the PPTP Password text box. 5 Enter your
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    CONFIGURATION L2TP Figure 51 L2TP Setup Screen Check with your ISP to make sure they support L2TP. To set up the Router for use with an L2TP connection, use the following procedure: 1 Select L2TP (used by some European providers) in the IP Allocation Mode field. 2 Enter your
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    box enabled, you can click Release to release the WAN IP Address for the Router, or click Renew to renew the current WAN IP Address, using DHCP. ■ , and then click Apply. Firewall On the main frame of the Firewall setup screen is a menu with six tabs: Virtual Servers, Special Applications, PCs
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    ROUTER configured as an FTP server, allowing others outside of your office network to download files of your choosing. Or, if you have created a Web site, computer in the Server IP Address text box. 3 Either: ■ Select a Local Service other than Custom from the drop-down list. (Figure 53), or Figure 53
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    7 to be activated. Special Applications Figure 55 Special Applications Screen Select Special Apps tab to display Authorized Application setup screen. (Figure 55) Some software applications require special or multiple connections to the Internet and these would normally be blocked by the firewall
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    76 CHAPTER 5: ROUTER CONFIGURATION trigger port and incoming port(s), where traffic on the trigger port tells the firewall to open the incoming ports. Each defined Special Application only supports a single computer user, and up to 10 Special Applications can be defined. Any incoming ports opened by
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    Figure 58 PC Privileges Screen Select PC Privileges to display the PC Privilege setup screen (Figure 58). Access from the local network to the Internet can a computer-by-computer basis. In the default configuration the Router will allow all connected computers unlimited access to the Internet. PC
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    To use access control for all computers: 1 Click PCs access authorized services only. 2 Select All PCs to set up the access rights for all computers connected to the Router. The screen shown in Figure 59 displays. Figure 59 All PCs Setup Screen 3 If required, check the Bypass URL Filter check box to
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    computers: 1 If not already selected, click PCs access authorized services only. 2 Click New to set up access rights for individual PC Privileges setting screen displays, as shown in Figure 60. Figure 60 Individual PCs Setup Screen 3 Enter the last digit(s) of the IP address of the computer in
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    able to access. The Router's URL Filter has three settings: ■ Disabled - Users can browse all Web sites. None will be filtered. ■ Deny List - Users can browse all Web deny list. See "Deny List" on page 80. ■ Allow List - Users are unable to browse any Web sites except of those listed in the allow
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    .thisexample.com You can filter up to 30 keywords and URLs. Computers that should not be subject to URL filtering can be excluded by ticking the Bypass URL Filter check box in the PC Privileges setup screen. See "PC Privileges" on page 77. Allow List To stop users from accessing any Web sites
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    82 CHAPTER 5: ROUTER CONFIGURATION Figure 62 URL Filter Screen showing Allow List To allow a specific site, enter the URL for that site. For example, to let your users browse a site called www.goodsite.com, enter www.goodsite.com or goodsite.com in one of the fields. If goodsite.com has multiple sub
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    URLs of a number of pre-defined categories. The Router comes with a 14-day free trial of the 3Com Content Filter Service. To activate the 14-day free trial of the service, you must first register your Router at www.3com.com. To continue using the service after the trial period, you must purchase the
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    84 CHAPTER 5: ROUTER CONFIGURATION To activate Content Filtering: 1 Select Firewall from the provides the ability to detect and prevent certain types of network attacks such as DoS attacks. Denial of Service (DoS) attacks are aimed at devices and networks with a connection to the Internet. The goal
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    Firewall 85 1 Select Firewall from the main menu, then select the SPI tab to display the SPI screen (Figure 64 and Figure 65): Figure 64 SPI Screen - upper section Figure 65 SPI Screen - lower section Intrusion Detection Feature The Intrusion Detection feature limits access for incoming traffic at
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    If you check the check box, the Router allows this type of incoming traffic, but only example, if you check only the Enable FTP Service check box, all incoming traffic is blocked except your SMTP Server Address. 7 Enter your SMTP Server User Name. 8 Enter your SMTP Server Password. Connection Policy
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    Tools DoS Detect Criteria 15 In the Total incomplete TCP/UDP sessions HIGH text box, enter the number of unestablished sessions that will cause the software to start deleting half-open sessions. The default is 300. 16 In the Total incomplete TCP/UDP sessions LOW text box, enter the number of
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    Restart the Router, simulating the effect of power cycling the unit. No configuration information will be lost but the log files will be erased. This function may be of use if you are experiencing problems and you wish to re-establish your Internet connection. Any network users who are currently
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    saving tick the Enable Day Light savings box, and then click Apply (Figure 67). The Router reads the correct time from NTP servers on the Internet and sets its system clock accordingly Click BACKUP to save the current Router configuration. You will be prompted to download and save a file to disk.
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    Figure 69 Upgrade Screen The Upgrade facility allows you to install on the Router any new releases of system software that 3Com may make available. To install new software, you first need to download the software from the 3Com support web site to a folder on your computer. Once you have done this
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    during the upgrade procedure; if you do, the software may be corrupted and the Router may not start up properly afterwards. If the Alert LED comes on continuously after a failed upgrade, refer to Chapter 6, "Troubleshooting". Advanced Selecting Advanced from the main menu displays the following
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    CONFIGURATION ■ Gateway - the gateway used to route data to the network specified by the network address. RIP The Router supports the Routing Information Protocol (RIP). RIP allows you to set up routing information on one RIP enabled device, and have that routing information replicated to
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    devices. If you select Silent, the Router only receives RIP update messages. 2 Select either 1 (for RIPv1) or 2 (for RIPv2) from the Version drop-down list. 3Com recommends that you use RIPv1 if there is any RIP enabled device on your network that does not support RIPv2. In all other case, select
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    73 Routing Table screen DDNS Dynamic Domain Name Server (DDNS) enables you to map a static domain name to a dynamic IP address. The Router supports two DDNS providers, TZO.com and DYNDNS.org. Before you can set up DDNS, you must obtain an account, password and static domain name from your DDNS
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    select the DDNS tab. The DDNS screen displays (Figure 74). Figure 74 DDNS screen 2 Select a DDNS Service provider from the drop-down list. This can be either TZO.com or DynDNS.org. TZO.com If you select TZO.com: 1 In the Domain Name text box, enter the domain name. 2 In the Username/E-mail text
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    options: ■ Enable universal plug and play - Universal plug and play allows compatible software to read and change some the Router's firewall settings. This reduces the configuration required but lessens your control of the Router's firewall. Check on the check box to enable this feature, and then
  • 3Com 3CRWE554G72TU | User Guide - Page 97
    to access the Internet. Other problems may also occur. Check on the check box to disable NAT, and then select Apply. 3Com recommends that you leave this manage the Router. Any other users will be rejected. ■ Enable administration from a whole subnet - This option allows a number of users within the
  • 3Com 3CRWE554G72TU | User Guide - Page 98
    98 CHAPTER 5: ROUTER CONFIGURATION address of the Router. You may then login using the administration password. Your Internet IP address can be found at the bottom of the screen. See Figure 75. Status
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    Figure 77 Status Screen - lower section Status and Logs 99 Usage Usage displays an approximate count of the traffic since the Router was last reset. (Figure 78) The counts are approximate and should be used as a guide only. Contact your ISP for accurate logging information. Figure 78 Usage Screen
  • 3Com 3CRWE554G72TU | User Guide - Page 100
    view both the normal events, and security threats logged by the Router. Figure 79 Logs Screen You may be asked to refer to the information on the Status and Logs screens if you contact your supplier for technical support. Support/Feedback Selecting Support/Feedback from the main menu displays the
  • 3Com 3CRWE554G72TU | User Guide - Page 101
    of Internet links that provide information and support concerning the Router (Figure 80). Feedback Figure 81 Feedback Screen Selecting the Feedback option displays the Feedback screen and allows you to provide feedback to 3Com on the operation of your Router (Figure 81). This screen should not be
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    102 CHAPTER 5: ROUTER CONFIGURATION
  • 3Com 3CRWE554G72TU | User Guide - Page 103
    6 TROUBLESHOOTING Basic Connection Checks ■ Check that the Router is connected to your computers and to the cable/DSL modem, and that all the equipment is powered on. Check that the LAN Status and Cable/DSL Status LEDs on the Router are illuminated, and that any corresponding LEDs on the cable/
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    you have entered the correct information into the Router configuration screens as required by your Internet Service Provider. Use the "Internet Settings" screen to verify this. ■ For DSL users, check that the PPPoE or PPTP user name, password and service name are correct, if these are required. Only
  • 3Com 3CRWE554G72TU | User Guide - Page 105
    configuration screen but cannot log on because you do not know or have forgotten the password, follow the steps below to reset the Router to it's factory default configuration. CAUTION: All your configuration changes will be lost, and you will need to run the configuration wizard again before
  • 3Com 3CRWE554G72TU | User Guide - Page 106
    both the wireless computers and the Router to establish whether this problem exists. ■ Most wireless computer Adapters will scan the channels for the wireless Router. If a wireless computer has not located the Router then try initiating a search manually if the client software supports this feature
  • 3Com 3CRWE554G72TU | User Guide - Page 107
    LED is unlit then there may be a fault with your unit. Contact 3Com Technical Support. ■ Check that you are using the correct power adapter for your Router. You should only use the power adapter supplied with your Router. Replacement Power Adapters If both the Power Adapter OK LED and Power LED
  • 3Com 3CRWE554G72TU | User Guide - Page 108
    detected. Locate the copy of the Router software on the accompanying CD-ROM or 3Com web site (http://www.3com.com) and upload it to the Router to see if this clears the fault (refer to "Recovering from Corrupted Software" below). If this does not fix the problem, contact your supplier for further
  • 3Com 3CRWE554G72TU | User Guide - Page 109
    Follow the instructions below to upload a new copy of the system software to a Router unit in this state. Ensure that one of your computers has a copy of the new software image file stored on its hard disk or available on CD-ROM. The latest software is available on 3Com's Web site at: www.3com.com
  • 3Com 3CRWE554G72TU | User Guide - Page 110
    configuration. Where can I download software updates for the Router? Updates to the Router software are posted on the 3Com support web site, accessible by visiting: http://www.3com.com What other online resources are there? The 3Com Knowledgebase at: http://knowledgebase.3com.com is a database of
  • 3Com 3CRWE554G72TU | User Guide - Page 111
    Running the Discovery Application 3Com provides a user friendly Discovery application for detecting the Router on the network. Windows Installation (95/98/2000/Me/NT) 1 Insert the Router CD-ROM in the CD-ROM drive on your computer. A menu will appear; select Router Discovery. Discovery will find
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    112 APPENDIX A: USING DISCOVERY Figure 83 Discovered Router Screen 3 Figure 84 shows an example Discovered Devices screen. Highlight the Cable/DSL Router by clicking on it, and press Next. Figure 84 Discovery Finish Screen 4 Click on Finish to launch a web browser and display the login page for
  • 3Com 3CRWE554G72TU | User Guide - Page 113
    (IP and TCP) working together. TCP/IP is an internationally adopted and supported networking standard that provides connectivity between equipment from many vendors over a wide variety of networking technologies. Managing the Router over the Network To manage a device over the network, the
  • 3Com 3CRWE554G72TU | User Guide - Page 114
    unique. An example IP address is '192.168.100.8'. However, the size of the network determines the structure of this IP Address. In using the Router, you will probably only encounter two types of IP Address and subnet mask structures. Type One In a small network, the IP address of '192.168
  • 3Com 3CRWE554G72TU | User Guide - Page 115
    four computers represented) and a Router might be configured. Table 5 IP Addressing and Subnet Masking Device PC 1 PC 2 PC 3 PC 4 Router IP Address 192.168.100.8 192 with large numbers of users on them. Static Addressing You must enter an IP Address and the subnet mask manually on every device.
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    .255.0.0). If two devices allocate themselves the same address, the conflict is detected and one of the devices allocates itself a new address. Automatic IP addressing support was introduced by Microsoft in the Windows 98 operating system and is also
  • 3Com 3CRWE554G72TU | User Guide - Page 117
    specifications for the OfficeConnect Wireless 11g Cable/DSL Router. Wireless 11g Cable/DSL Router Interfaces Cable/DSL modem 24, 18, 12, or 6 Mbps Maximum channels: 14 Range up to 304.8m (1000ft) Frequency: (US/Canada/Europe) 2.400-2.4835 GHz Sensitivity: 6, 12, 18, 24, 36, 48 Mbps: -85 dBm;
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    118 APPENDIX C: TECHNICAL SPECIFICATIONS Encryption: 40/64 bit WEP, 128 bit WEP, WPA Maximum clients: 128 O/P Power 18dBm Operating Temperature 0 °C to 40 °C (32 °F to 105 °F) Power 7VA, 23.9 BThU/hr Humidity 0% to 90% (non-condensing) humidity Dimensions ■ Width = 220 mm (8.7 in.) ■ Depth = 135 mm
  • 3Com 3CRWE554G72TU | User Guide - Page 119
    or higher ■ Unix Ethernet Performance The Router complies to the IEEE 802.3i, u and x specifications. Wireless Performance The Router has been designed to conform to the Wi-Fi interoperability test standard. Cable Specifications The Router supports the following cable types and maximum lengths
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    120 APPENDIX C: TECHNICAL SPECIFICATIONS
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    the equipment to which it is connected also operates under SELV conditions. WARNING: There are no user-replaceable fuses or user-serviceable parts inside the Router. If you have a physical problem with the unit that cannot be solved with problem solving actions in this guide, contact your supplier.
  • 3Com 3CRWE554G72TU | User Guide - Page 122
    Sie das Geräts installieren oder ausbauen: VORSICHT: Der Router erzeugt und verwendet Funkfrequenz (RF). In manchen Umgebungen ist die vorzugehen. VORTSICHT: Stapeln Sie das Geräts nur mit anderen OfficeConnect Gerätes zusammen. VORSICHT: Aufgrund von internationalen Sicherheitsnormen darf das
  • 3Com 3CRWE554G72TU | User Guide - Page 123
    zu wartende Teile in dem Gerät vorhanden. Wenn Sie ein Problem mit dem Router haben, das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden : Seulement entasser le moyer avec les autres moyeux OfficeConnects. AVERTISSEMENT: Pour garantir le respect des normes internationales
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    problème physique avec le moyeu qui ne peut pas être résolu avec les actions de la résolution des problèmes dans ce guide, contacter votre fournisseur. AVERTISSEMENT: Débranchez l'adaptateur électrique avant de retirer cet appareil. AVERTISSEMENT: Ports RJ-45. Il s'agit de prises femelles blindées
  • 3Com 3CRWE554G72TU | User Guide - Page 125
    AGREEMENT IMPORTANT: READ BEFORE INSTALLING THE SOFTWARE 3Com END USER SOFTWARE LICENSE AGREEMENT YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE DOWNLOADING, INSTALLING AND USING THIS PRODUCT, THE USE OF WHICH IS LICENSED BY 3COM CORPORATION (ì3COMî) TO ITS CUSTOMERS FOR THEIR
  • 3Com 3CRWE554G72TU | User Guide - Page 126
    the Software and Documentation, and may be amended only in a writing signed by both parties. Should you have any questions concerning this Agreement or if you desire to contact 3Com for any reason, please contact the 3Com subsidiary serving your country, or write: 3Com Corporation, Customer Support
  • 3Com 3CRWE554G72TU | User Guide - Page 127
    on PC, MacPOET/WinPOET, EnterNet 300. The Router has this software built in and you can remove it from your PC. You will need to enter the user name and password that your ISP provided to you in the PPPoE page of the Router. Leave the service name blank unless your ISP requires it. Bell
  • 3Com 3CRWE554G72TU | User Guide - Page 128
    Settings page. CableSpeed, Cnet, Direct Link, Drizzle, DSL Extreme, Earthlink Wireless, Fast Point, Flashcom, GTE-WhirlWind, Heavenet, HSA Corp, I-55, to be entered on the "Fixed IP" page of the Router. Cox Cable, Sprint, US Cable, Cable-Cable *Bell includes Bell Advantage, Bell Canada, Bell South
  • 3Com 3CRWE554G72TU | User Guide - Page 129
    most wireless clients. It is used to connect a peer to peer network together without the use of an access point. It offers lower performance than infrastructure mode, which is the mode the Router uses. (see also Infrastructure mode.) Auto-negotiation Some devices in the OfficeConnect range support
  • 3Com 3CRWE554G72TU | User Guide - Page 130
    supports both Ethernet (10 Mbps) and Fast Ethernet (100 Mbps) speeds. Channel Similar to any radio device, the OfficeConnect Cable/DSL Router allows you to choose different radio channels in the wireless 98 and Windows NT 4.0 contain software that assigns IP addresses to workstations on a
  • 3Com 3CRWE554G72TU | User Guide - Page 131
    is requested (as in typing "3com.com" into your Internet browser), the user is sent to the proper IP address wireless data transmissions. The OfficeConnect Cable/DSL Router and Wireless Cable/DSL Router offer a choice of encryption methods. See "WPA" and "WEP" for details. ESSID Extended Service
  • 3Com 3CRWE554G72TU | User Guide - Page 132
    are similar to repeaters, in that they connect LANs of the same type; however they connect more LANs than a repeater and are generally the SNMP protocol. Infrastructure mode Infrastructure mode is the wireless configuration supported by the Router. You will need to ensure all of your clients are
  • 3Com 3CRWE554G72TU | User Guide - Page 133
    GLOSSARY 133 ISP Internet Service Provider. An ISP is a business that provides connectivity to the enables all the computers on your network to share one IP address. The NAT capability of the Router allows you to access the Internet from any computer on your home network without having to purchase
  • 3Com 3CRWE554G72TU | User Guide - Page 134
    attempts to access the network will be denied. SSID Service Set Identifier. Some vendors of wireless products use SSID interchangeably with ESSID. Subnet Address An of several LAN segments. Switches are similar to bridges, in that they connect LANs of a different type; however they connect more
  • 3Com 3CRWE554G72TU | User Guide - Page 135
    an example of a wide area network. WDS Wireless Distribution System. A system that can be comprised of a bridging and/or a repeater mode. In wireless bridging, APs communicate only with each other to bridge together two separate networks. In wireless repeating, APs rebroadcast received signals to
  • 3Com 3CRWE554G72TU | User Guide - Page 136
    Client The term used to describe a desktop or mobile PC that is wirelessly connected to your wireless network Wireless LAN Service Another term for ESSID (Extended Service Set Identifier) Area Wizard A Windows application that automates a procedure such as installation or configuration. WLAN
  • 3Com 3CRWE554G72TU | User Guide - Page 137
    Configuration backup 89 restore 90 Connection Policy 86 content filtering 83 Conventions notice icons, About This Guide 8 text, About This Guide 8 Country Selection 30 D DDNS 94, 96 DHCP 35, 40, 49, 115 DHCP Address 36, 50 deleting 62 modifying 62 N Network addresses 113 Networking wireless 105 NIC
  • 3Com 3CRWE554G72TU | User Guide - Page 138
    90 URL Filter 80 V Virtual Servers 73, 74 W WAN 33 WDS 63 Web Proxy 28 Wireless authorized PCs 61 channel selection 52 client list 62 configuration 52 connection control 60 encryption 54 LED 15 networking 105 NIC 14 service area name 53 settings 41, 51 WPA encryption configuring 54 enterprise mode
  • 3Com 3CRWE554G72TU | User Guide - Page 139
    NOTICES FOR THE WIRELESS 11G CABLE/DSL ROUTER Use of the Wireless 11g Cable/DSL Router is only authorized local regulatory agencies: Channel Configuration is only available on the 3CRWE554G72T unit. The 3CRWE554G72TU unit is for use in the US, and the channel is pre-configured. Table 5 Channels
  • 3Com 3CRWE554G72TU | User Guide - Page 140
    and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there , which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures
  • 3Com 3CRWE554G72TU | User Guide - Page 141
    determined by turning the equipment off and on, the user is encouraged to try to correct the interference by How to Identify and Resolve Radio-TV Interference Problems This booklet is available from the U.S. 3CRWE554G72T Wireless 11g Cable/DSL Router 3CRWE554G72TU Wireless 11g Cable/DSL Router (US
  • 3Com 3CRWE554G72TU | User Guide - Page 142
    below the FCC radio frequency exposure limits. Nevertheless, the 3Com OfficeConnect Wireless 11g Cable/DSL Router shall be used in such manner that the potential for human contact during normal operation is minimized. The distance between the antennas and the user should not be less than 20 cm. This
  • 3Com 3CRWE554G72TU | User Guide - Page 143
    143 Potential RF Interference (Canada) CAUTION: To prevent radio interference to the licensed service, this device is intended to be operated indoors and away from windows to provide maximum shielding. Equipment (or it's transmit antenna) that is installed outdoors
  • 3Com 3CRWE554G72TU | User Guide - Page 144
    144
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  • 3Com 3CRWE554G72TU | User Guide - Page 146
    , Marlborough, MA USA 01752-3064. To learn more about 3Com products and services, visit our World Wide Web site at www.3com.com Copyright © 2004 3Com Corporation. All rights reserved. 3Com and OfficeConnect are registered trademarks of 3Com Corporation. All other company and product names may be
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Part No. DUA0554-TAAA02
Published November 2004
OfficeConnect
®
Wireless 11g Cable/DSL Router
User Guide
3CRWE554G72T
3CRWE554G72TU