3Com OfficeConnect 3C857 User Manual
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3Com OfficeConnect 3C857 User Manual

Cable/dsl gateway wireless cable/dsl gateway
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OfficeConnect
Cable/DSL Gateway
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User Guide

3C857
3CRWE52196
(3CRWE52196 Only)
http://www.3com.com/
Part No. DUA0085-5AAA04
Published October 2002
®

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  • Page 1: User Guide

    OfficeConnect Cable/DSL Gateway Wireless Cable/DSL Gateway User Guide 3C857 3CRWE52196 (3CRWE52196 Only) http://www.3com.com/ Part No. DUA0085-5AAA04 Published October 2002 ®...
  • Page 2 All other company and product names may be trademarks of the respective companies with which they are associated. ENVIRONMENTAL STATEMENT It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we are committed to: Establishing environmental performance standards that comply with national legislation and regulations.

  • Page 3: Table Of Contents

    ONTENTS BOUT UIDE Naming Convention Conventions Feedback about this User Guide Related Documentation Product Registration NTRODUCING THE OfficeConnect Cable/DSL Gateway and Wireless Cable/DSL Gateway Gateway Advantages Package Contents Minimum System and Component Requirements Front Panel Rear Panel ARDWARE NSTALLATION Introduction Safety Information Positioning the Gateway Using the Rubber Feet...
  • Page 4 Windows 95/98/ME Macintosh Disabling PPPoE and PPTP Client Software Disabling Web Proxy UNNING THE ETUP Accessing the Wizard Password Time Zone WAN Settings LAN Settings DHCP Wireless Settings Summary ATEWAY ONFIGURATION Navigating Through the Gateway Configuration Pages Main Menu Option Tabs Welcome Screen Notice Board Password...
  • Page 5 PC Privileges Security System Tools Restart Time Zone Configuration Upgrade Status and Logs Status Logs Support ROUBLESHOOTING Basic Connection Checks Browsing to the Gateway Configuration Screens Connecting to the Internet Forgotten Password and Reset to Factory Defaults Wireless Networking Alert LED Recovering from Corrupted Software Frequently Asked Questions SING...
  • Page 6 ECHNICAL PECIFICATIONS AFETY NFORMATION OFTWARE ISP I NFORMATION LOSSARY NDEX EGULATORY OTICES EGULATORY OTICES FOR THE ATEWAY ICENCE GREEMENT /DSL G OR THE ABLE IRELESS ABLE ATEWAY /DSL...

  • Page 7: About This Guide

    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...

  • Page 8: Conventions

    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: pddtechpubs_comments@3com.com Please include the following information when commenting: Table 2 list conventions that are used throughout this guide.

  • Page 9: Related Documentation

    Installation Guide. This guide contains the instructions you need to install and configure your Gateway. Product Registration You can now register your Gateway on the 3Com web site and receive up-to-date information on your product: http://support.3com.com/registration/frontpg.pl OfficeConnect Cable/DSL Gateway and Wireless Cable/DSL Gateway...
  • Page 10 BOUT UIDE...

  • Page 11: Introducing The

    Welcome to the world of networking with 3Com business environment, communication and sharing information is crucial. Computer networks have proved to be one of the fastest modes of communication but, until recently, only large businesses could afford the networking advantage. The OfficeConnect has changed all this, bringing networks to the small office.
  • Page 12 1: I HAPTER NTRODUCING THE ATEWAY Figure 1 Example Network Without a Gateway When you use the Gateway in your network (Figure 2), it becomes your connection to the Internet. Connections can be made directly to the Gateway, or to an OfficeConnect Switch or Hub, expanding the number of computers you can have in your network.

  • Page 13: Gateway Advantages

    Gateway The advantages of the Gateway include: Advantages Package Contents The Gateway kit includes the following items: If any of these items are missing or damaged, please contact your retailer. Shared Internet connection for wired computers. The Wireless Cable/DSL Gateway also provides shared internet connection to wireless computers No need for a dedicated, “always on”...

  • Page 14: Minimum System And Component Requirements

    1: I HAPTER NTRODUCING THE Minimum System Your Gateway requires that the computer(s) and components in your and Component network be configured with at least the following: Requirements Front Panel The front panel of the Gateway contains a series of indicator lights (LEDs) that help describe the state of various networking and connection operations.
  • Page 15 The Gateway has just been started up and is running a self-test routine, or The administrator has invoked the Reset to Factory Defaults command, or The system software is in the process of being upgraded In each of these cases, wait until the Gateway has completed the current operation and the alert LED is Off.

  • Page 16: Rear Panel

    1: I HAPTER NTRODUCING THE 4 Wireless LAN (WLAN) Status LED *Available on the OfficeConnect Wireless Cable/DSL Gateway only Yellow If the LED is on it indicates that wireless networking 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 Gateway, or there is a problem.
  • Page 17 7 Power Adapter Socket Only use the power adapter supplied with this Gateway. Do not use any other adapter. 8 Ethernet Cable/DSL port Use the supplied patch cable to connect the Gateway to the Ethernet port on your cable or DSL modem. The port will automatically adjust to the correct speed and duplex.
  • Page 18 1: I HAPTER NTRODUCING THE ATEWAY...

  • Page 19: Hardware Installation

    Introduction This chapter will guide you through a basic installation of the Gateway, including: Safety Information WARNING: Please read the before you start. VORSICHT: Bitte lesen Sie den Abschnitt sorgfältig durch, bevor Sie das Gerät einschalten. AVERTISSEMENT: Veuillez lire attentivement la section importantes de sécurité”...

  • Page 20: Using The Rubber Feet

    Water or moisture cannot enter the case of the unit. Air flow around the unit and through the vents in the side of the case is not restricted. 3Com recommends you provide a minimum of 25 mm (1 in.) clearance.

  • Page 21: Before You Install Your Gateway

    CAUTION: Only wall mount single units, do not wall mount stacked units. Before you Install Before you install and configure your Gateway, you need the following your Gateway additional information. If you do not have this information, contact your Internet Service Provider (ISP). Space is provided below for you to record this information.

  • Page 22: Powering Up The Gateway

    2: H HAPTER ARDWARE NSTALLATION If your ISP allocates IP information dynamically over a protocol other than PPPoE, you do not need any further information. This configuration is typical of cable connections. Powering Up the To power up the Gateway: Gateway 1 Plug the power adapter into the power adapter socket located on the back panel of the Gateway.

  • Page 23: Wireless Only

    Next you need to set up your computers so that they can make use of the Gateway to communicate with the Internet. 3Com recommends that you perform the initial Gateway configuration from a computer that is directly connected to one of the LAN ports.
  • Page 24 2: H HAPTER ARDWARE NSTALLATION...

  • Page 25: Setting U P Your Computers

    The Gateway has the ability to dynamically allocate network addresses to the computers on your network, using DHCP. However, your computers need to be configured correctly for this to take place. To change the configuration of your computers to allow this, follow the instructions in this chapter.
  • Page 26 3: S HAPTER ETTING 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 Click OK. Figure 7 Internet Protocol (TCP/IP) Properties Screen 7 Restart your computer.

  • Page 27: Windows Xp

    Windows XP 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 click on LAN or High Speed Connection icon. A screen titled Local Area Connection Status will appear. 5 Select Internet Protocol TCP/IP and click on Properties.

  • Page 28: Disabling Pppoe And Pptp Client Software

    3: S HAPTER ETTING Disabling PPPoE If you have PPPoE or PPTP client software installed on your computer, you and PPTP Client will need to disable it. To do this: Software 1 From the Windows Start menu, select Settings > Control Panel. 2 Double click on Internet Options.

  • Page 29: Running The Setup Wizard

    Accessing the The Gateway setup program is Web-based, which means that it is Wizard accessed through your Web browser (Netscape Navigator or Internet Explorer). To use the Setup Wizard: 1 Ensure that you have at least one computer connected to the Gateway. Refer to 2 Launch your Web browser on the computer.
  • Page 30 4: R HAPTER UNNING THE ETUP Figure 10 Gateway Login Screen 5 If the password is correct, the Country Selection screen will appear (on the Wireless Cable/DSL Gateway only). Select the country you wish to configure the gateway for, then click Apply. Figure 11 Country Selection Screen 6 When you have logged in (Cable/DSL Gateway) or selected a country (Wireless Cable/DSL Gateway) either:...
  • Page 31 If your Gateway has not been configured before, the Wizard will launch automatically (refer to 7 Click Next. 8 You will be guided step by step through a basic setup procedure. Figure 12 Welcome Screen Figure 13 Wizard Screen Accessing the Wizard Figure 13).

  • Page 32: Password

    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 Gateway for the first time. The Gateway is shipped from the factory with a default password, admin.

  • Page 33: Wan Settings

    The Daylight Savings option advances the system clock by one hour. It does not cause the system clock to be updated for daylight savings time automatically. WAN Settings Figure 16 Internet Settings Screen This Internet Addressing Mode window allows you to set up the Gateway for the type of Internet connection you have.
  • Page 34 4: R HAPTER UNNING THE ETUP PPPoE Mode Figure 17 PPPoE Screen To setup the gateway 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 Password text box.
  • Page 35 Dynamic IP Address Mode To setup the Gateway for use with a dynamic IP address connection: 1 Select the ISP provides configuration dynamically (via DHCP) and then click Next. See Figure Figure 18 Hostname Screen 2 Some ISPs require a host name. If your ISP has this requirement, enter the host name in the Host Name text box Clone MAC Address screen displays.
  • Page 36 4: R HAPTER UNNING THE ETUP Static IP Mode To setup the Gateway for use with a static IP address connection, use the following procedure: 1 Select ISP has provided a static IP address, (see Next. Figure 20 Static IP Mode Screen 2 Enter your IP Address in the IP Address text box.
  • Page 37 PPTP Mode Figure 21 PPTP Mode Screen To setup the gateway 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 Name text box. 3 Enter your PPTP password in the PPTP Password text box.

  • Page 38: Lan Settings

    4: R HAPTER UNNING THE ETUP IZARD 6 IP settings must be used when establishing a PPTP connection. Fill in the Initial IP Address and the Initial Subnet Mask fields if your ISP has provided you with these settings. Alternatively, if the PPTP server is located in your DSL modem, click Suggest to select an IP address on the same subnet as the PPTP server.

  • Page 39: Wireless Settings

    There are a maximum of 13 channels, the number available to you is dependent on the country you reside in. The Service Area Name default for 3Com products is "3Com". Up to 32 (case sensitive) characters can be entered for the Service Area Name.

  • Page 40: Summary

    When you complete the Setup Wizard, a configuration summary will display. Verify the configuration information of the Gateway and then click Finish to save your settings. 3Com recommends that you print this page for your records. If you have made changes to the LAN Settings or wireless configuration options, you may need to reconfigure the computer you are using in order to make contact with the Gateway again.

  • Page 41: Gateway Configuration

    Navigating This chapter describes all the screens available through the Gateway Through the configuration pages, and is provided as a reference. To get to the Gateway configuration pages, browse to the Gateway by entering the URL in the Configuration location bar of your browser. The default URL is http://192.168.1.1 Pages but if you changed the Gateway LAN IP address during initial configuration, use the new IP address instead.

  • Page 42: Option Tabs

    5: G HAPTER ATEWAY ONFIGURATION Option Tabs Each corresponding menu page may also provide sub-sections which are accessed through the use of tabs (see sub-section, simply click on the required tab. Getting Help On every screen, a Help button is available which provides access to the context-sensitive online help system.

  • Page 43: Notice Board

    Notice Board Figure 28 Notice Board Screen The Notice Board is used to display configuration warning messages. For example, you would be warned if you had disabled the Firewall. Password Figure 29 Password Screen Changing the Administration Password You can change the password to prevent unauthorized access to the Administration System.

  • Page 44: Wizard

    5: G HAPTER ATEWAY ONFIGURATION If you have forgotten your password you need to reset the Gateway. See “Forgotten Password and Reset to Factory Defaults” page 76 Wizard Figure 30 Wizard Screen Click WIZARD... to launch the configuration wizard. Refer to Chapter 4 for information on how to run the wizard.

  • Page 45: Dhcp Clients List

    The LAN Settings screen is used to specify the LAN IP address of your Gateway, and to configure the DHCP server. 1 Select Unit Configuration and then specify the Gateway IP Address and Subnet Mask in the LAN Settings field. The default IP address of the Gateway is 192.168.1.1.

  • Page 46: Wireless Settings

    DHCP server has run out of IP addresses. Wireless Settings The following section applies to the Wireless Cable/DSL Gateway only. To improve the security of your wireless network, 3Com recommends that you: 1. Change the SSID from its default value - see page 47 2.
  • Page 47 The Service Area Name may also be referred to as "ESSID" depending on your networking vendor. By default the Gateway uses the name "3Com". 3Com recommends that you change the default name. In order that your wireless computers can connect to the Gateway, you must: Use Infrastructure Mode not Adhoc Mode.

  • Page 48: Encryption

    Wireless PC and the Gateway. It is important to remember that with WEP disabled anyone with a Wireless PC can eavesdrop on your network. 3Com recommends that you get the network working with WEP disabled first and then enable it as the last step. This will simplify setting up your network.
  • Page 49 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 any alphanumeric characters and must be between 6 and 30 characters long. A single string will automatically generate 4 unique keys for 64 or 128 bit WEP.

  • Page 50: Connection Control

    Gateway. By default, any wireless computer that has the Passphrase - This is another common method and similar to the 3Com Encryption string. In 64 bit WEP, the passphrase will generate 4 different keys.
  • Page 51 same Service Area Name/SSID, channel and encryption settings as the Gateway can connect to it. Select Only Authorised Wireless PCs can connect to the Gateway to enable and configure this feature. If you enable this feature from a Wireless PC, it will automatically be added to the Authorised Wireless PC list.
  • Page 52 5: G HAPTER ATEWAY ONFIGURATION 3 Press Add. Click Close to discard all changes. Modifying a MAC Address 1 Click on the MAC address to be modified in the table 2 Modify the MAC address. The MAC address can be edited manually, or a different MAC address may be selected from the drop down list of detected addresses.

  • Page 53: Client List

    Gateway can support). Profile Figure 40 Profile Screen Some 3Com Wireless Network Adapters allow you to import Wireless configurations via a ‘profile’. The Gateway can generate a profile so that you do not need to configure your Wireless PCs manually.
  • Page 54 2 Your browser will then prompt you to enter a file name and folder location in which to save the profile. Once the profile has been saved it can be copied on to another PC and imported into the 3Com Wireless Network Adapter.

  • Page 55: Internet Settings

    Internet Settings Before you can configure the Gateway, you need to know the IP information allocation method used by your ISP. There are four different ways that ISPs can allocate IP information, as described below: 1 Static IP Address (DSL or Cable) The ISP provides the IP addressing information for you to enter manually.

  • Page 56: Connection To Isp

    5: G HAPTER ATEWAY ONFIGURATION When you install the Gateway, you will not need to use the dialup VPN on your PC anymore. Connection to ISP Figure 41 Connection to ISP Screen Before beginning this section, ensure you have the required information from your ISP.
  • Page 57 Static IP Address Figure 42 Connection Parameters Screen - Static IP To setup the Gateway for use with a Static IP address connection: 1 Select Static IP Address (to be specified manually) in the IP Allocation Mode field (Figure 42). 2 Enter your IP Address in the IP Address text box.
  • Page 58 5: G HAPTER ATEWAY ONFIGURATION Dynamic IP Address Figure 43 Connection Parameters Screen - Dynamic IP If this mode is selected, your IP Address, Subnet Mask, and DNS Address will be obtained automatically from your ISP. They are not displayed on this screen, but may be viewed on the Status screen (click on Status and Logs on the left hand menu bar).
  • Page 59 Use this PC’s MAC address - This field is automatically filled in with the MAC address of the PC you are using to configure the Gateway. You should use this address only if you were previously using this computer to connect directly to your modem. Enter a new MAC address manually - Use this option if you want to specify a new MAC address.
  • Page 60 5: G HAPTER ATEWAY ONFIGURATION 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 if your ISP requires this. 7 Select an idle time from the Maximum Idle Time drop-down list. This value will correspond to the amount of idle time (no Internet activity) that will pass before the Gateway automatically ends your PPP over Ethernet session.

  • Page 61: Firewall

    6 Select an idle time from the Maximum Idle Time drop-down list. This value will correspond to the amount of idle time (no Internet activity) that will pass before the Gateway automatically ends your PPTP session. 7 IP settings must be used when establishing a PPTP connection. Fill in the Initial IP Address and the Initial Subnet Mask fields if your ISP has provided you with these settings.
  • Page 62 5: G HAPTER ATEWAY ONFIGURATION Virtual Server Activating and configuring a virtual server allows one or more of the computers on your network to function as a public server. For example, one of your computers could be configured as an FTP server, allowing others outside of your office network to download files of your choosing.

  • Page 63: Special Applications

    The port numbers are specified using a comma-separated list, with hyphens to denote port number ranges. So for example, entering 2, 3, 5-7 would cause ports 2, 3, 5, 6, and 7 to be activated. Special Applications Figure 49 Special Applications Screen Select Special Applications tab to display Authorized Application setup screen.
  • Page 64 5: G HAPTER ATEWAY ONFIGURATION Figure 50 Special Application Settings Screen Or select Other to specify a suitable name for the special application and then enter a value in the Trigger Port and Incoming Ports text boxes (Figure 50). These values correspond to the outbound port numbers issued by the application.

  • Page 65: Pc Privileges

    PC Privileges Figure 52 PC Privileges Screen Select PC Privileges to display the PC Privilege setup screen Access from the local network to the Internet can be controlled on a computer-by-computer basis. In the default configuration the Gateway will allow all connected computers unlimited access to the Internet. PC Privileges allows you to assign different access rights for different computers on your network.
  • Page 66 5: G HAPTER ATEWAY ONFIGURATION In addition to the four authorised services listed, you can choose to allow or block access to other services. You can either: 4 To do this, select Allow or Block from the drop down menu and enter the exceptions into the text box.

  • Page 67: Security

    4 Select authorized services by clicking in the appropriate check box(es). In addition to the four authorised services listed, you can choose to allow or block access to other services. You can either: Allow all other services with exceptions, or Block all other services with exceptions step 4 of the previous section for more details.
  • Page 68 The Firewall is disabled by clicking on the check box so that a tick can be seen and then select Apply. 3Com recommends that you leave the firewall enabled. Enabling Remote Administration It is possible to administer the Gateway from four options: 1 Disable Remote Administration - This option is set as default.

  • Page 69: System Tools

    System Tools System Tools The main frame of the System Tools screen includes four administration items: Restart, Time Zone, Configuration, and Upgrade (Figure 56). Restart Figure 56 Restart Screen If your Gateway is not operating correctly, you can choose to restart the Gateway by selecting Restart the Gateway, simulating the effect of power cycling the unit.

  • Page 70: Configuration

    5: G HAPTER ATEWAY ONFIGURATION Choose the time zone that is closest to your actual location. The time zone setting is used by the system clock when displaying the correct time in the log files. If you use Daylight saving tick the Enable Daylight savings box, and then click Apply (Figure 57).

  • Page 71: Upgrade

    Figure 59 Upgrade Screen The Upgrade facility allows you to install on the Gateway 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, select Browse to tell your web browser where this file is on your computer, and then click Apply.

  • Page 72: Status And Logs

    5: G HAPTER ATEWAY ONFIGURATION Status and Logs Figure 60 Status and Logs Screen Selecting Status and Logs from the main menu displays the Status and Logs screens (Figure 60) in your Web browser window. The Status screen displays a tabular representation of your network and Internet connection.

  • Page 73: Status

    Status and Logs Status Status will display the current unit status, including a summary of the configuration Logs Logs will allow you to view both the normal events, and security threats logged by the Gateway You may be asked to refer to the information on the Status and Logs screens if you contact your supplier for technical support.
  • Page 74 5: G HAPTER ATEWAY ONFIGURATION...

  • Page 75: Troubleshooting

    Basic Connection Checks Browsing to the If you have connected your Gateway and computers together but cannot Gateway browse to the Gateway configuration screens, check the following: Configuration Screens ROUBLESHOOTING Check that the Gateway is connected to your computers and to the cable/DSL modem, and that all the equipment is powered on.

  • Page 76: Connecting To The Internet

    6: T HAPTER ROUBLESHOOTING Connecting to the If you can browse to the Gateway configuration screens but cannot Internet access sites on the Internet, check the following: Forgotten Password If you can browse to the Gateway configuration screen but cannot log on and Reset to because you do not know or have forgotten the password, follow the Factory Defaults...

  • Page 77: Wireless Networking

    Gateway connection to the Internet. Also, other computer users will lose their network connections whilst this process is taking place, so choose a time when this would be convenient. 1 Remove power from the Gateway. 2 Disconnect all your computers and the cable/DSL modem from the Gateway.
  • Page 78 6: T HAPTER ROUBLESHOOTING Ensure that the Wireless Clients are using the same SSID or Service Area Name as the Gateway. The SSID is case-sensitive Ensure that you are using the same level of security on all of your wireless computers (None, 40/64 or 128 bit) and that all devices are using the same keys, and the same order of keys where appropriate.

  • Page 79: Alert Led

    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. centre of the network with Wireless computers distributed around it.

  • Page 80: Frequently Asked Questions

    6: T HAPTER ROUBLESHOOTING 1 Remove power from the Gateway and disconnect the Cable/DSL modem and all your computers, except for the one computer with the software image. 2 You will need to reconfigure this computer with the following static IP address information: 3 Restart the computer, and re-apply power to the Gateway.
  • Page 81 Internet can connect to, but this is not a recommended configuration. Where can I download software upgrades for the Gateway? Upgrades to the Gateway software are posted on the 3Com support web site, accessible by visiting: http://www.3com.com...
  • Page 82 6: T HAPTER ROUBLESHOOTING...

  • Page 83: Sing Discovery

    Running the 3Com provides a user friendly Discovery application for detecting the Discovery Gateway on the network. Application Windows Installation (95/98/2000/Me/NT) 1 Insert the Gateway CD-ROM in the CD-ROM drive on your computer. A menu will appear; select Gateway Discovery.
  • Page 84 A: U PPENDIX SING ISCOVERY Figure 63 Discovered Gateway Screen Figure 64 Wireless Cable/DSL Gateway by clicking on it, and press Next. Figure 64 Discovery Finish Screen 4 Click on Finish to launch a web browser and display the login page for the Gateway.

  • Page 85: Ip Addressing

    IP A The Internet The Internet protocol suite consists of a well-defined set of Protocol Suite communications protocols and several standard application protocols. Transmission Control Protocol/Internet Protocol (TCP/IP) is probably the most widely known and is a combination of two of the protocols (IP and TCP) working together.
  • Page 86 B: IP A PPENDIX DDRESSING For your network to work correctly, all devices on the network must have: The only value that will be different is the specific host device number. This value must always be unique. An example IP address is ‘192.168.100.8’. However, the size of the network determines the structure of this IP Address.

  • Page 87: How Does A Device Obtain An Ip Address And Subnet Mask

    This type of IP Address operates on a subnet mask of ‘255.255.0.0’. represented) and a Gateway might be configured. Table 4 IP Addressing and Subnet Masking Device PC 1 PC 2 PC 3 PC 4 Gateway How does a Device There are three different ways to obtain an IP address and the subnet Obtain an IP mask.
  • Page 88 B: IP A PPENDIX DDRESSING an IP address at random from the industry standard subnet of 169.254.x.x (with a subnet mask of 255.255.0.0). 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 supported in Windows 2000.

  • Page 89: Technical Specifications

    This section lists the technical specifications for the OfficeConnect Cable/DSL Gateway and the Wireless Cable/DSL Gateway. Cable/DSL Gateway Interfaces Cable or DSL modem connection - 10/100 FD. LAN connection - four 10Mbps/100Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX) Operating Temperature 0 °C to 40 °C (32 °F to 105 °F) Power 7VA, 23.9 BThU/hr Humidity...
  • Page 90 C: T PPENDIX ECHNICAL Safety: EMC: Environmental: EN 60068 (IEC 68) *See System Requirements Operating Systems The Cable/DSL Gateway will support the following Operating Systems: Ethernet Performance The Cable/DSL Gateway complies to the IEEE 802.3i, u and x specifications. Cable Specifications The Cable/DSL Gateway supports the following cable types and maximum lengths: PECIFICATIONS...
  • Page 91 Wireless Cable/DSL Interfaces Gateway Cable or DSL modem connection - 10/100 FD. LAN connection - four 10Mbps/100Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX) WLAN Interface Standard IEEE 802.11b, Direct Sequence Spread Spectrum (DSSS) Transmission rate: 11Mbps, automatic fallback to 5.5, 2 or 1Mbps Maximum channels: 13 Range up to 304.8m (1000ft) Frequency: (US/Canada/Europe) 2.400-2.4835 GHz...
  • Page 92 C: T PPENDIX ECHNICAL Standards Functional: Safety: EMC: Radio Environmental: EN 60068 (IEC 68) *See System Requirements Operating Systems The Wireless Cable/DSL Gateway will support the following Operating Systems: Ethernet Performance The Wireless Cable/DSL Gateway complies to the IEEE 802.3i, u and x specifications.
  • Page 93 Wireless Performance The Wireless Cable/DSL Gateway complies with the IEEE 802.11b specification and conforms to the WiFi interoperability test standard. Cable Specifications The Wireless Cable/DSL Gateway supports the following cable types and maximum lengths: Category 3 (Ethernet) or Category 5 (Fast Ethernet or Dual Speed Ethernet) Twisted Pair —...
  • Page 94 C: T PPENDIX ECHNICAL PECIFICATIONS...

  • Page 95: Important Safety Information

    Important Safety Information 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: WARNING: The Gateway generates and uses radio frequency (rf) energy. In some environments, the use of rf energy is not permitted.

  • Page 96: Wichtige Sicherheitshinweise

    D: S PPENDIX AFETY NFORMATION WARNING: Disconnect the power adapter before moving the unit. WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They cannot be used as telephone sockets. Only connect RJ-45 data connectors to these sockets. Wichtige Sicherheitshinweise VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen Sicherheit befolgen müssen.

  • Page 97: Consignes Importantes De Sécurité

    VORSICHT: Es sind keine von dem Benutzer zu ersetzende oder zu wartende Teile in dem Gerät vorhanden. Wenn Sie ein Problem mit dem Gateway haben, das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden kann, setzen Sie sich mit Ihrem Lieferanten in Verbindung.
  • Page 98 D: S PPENDIX AFETY NFORMATION AVERTISSEMENT: L’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à la norme CEI 950. Ces conditions ne sont maintenues que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. AVERTISSEMENT: Il n’y a pas de parties remplaceables par les utilisateurs ou entretenues par les utilisateurs à...

  • Page 99: End User Software License Agreement

    Subject to the restrictions set forth herein, the Software is licensed to be used on any workstation or any network server owned by or leased to you, for your internal use, provided that the Software is used only in connection with this 3Com product. You may reproduce and provide one (1) copy of the Software and Documentation for each such workstation or network server on which the Software is used as permitted hereunder.
  • Page 100 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, 5400 Bayfront Plaza, P.O.
  • Page 101 ISP I Information Regarding Popular ISPs NFORMATION WAN Types Characteristics Dynamic IP Cable modem ISP, non-hostname based. Need to clone the MAC (Clone MAC) address in the Advanced tab of the Internet Settings page. Dynamic IP Cable ISP, Requires Hostname to authenticate ie.
  • Page 102 F: ISP I PPENDIX NFORMATION Static (DSL) Static (Cable) *Bell includes Bell Advantage, Bell Canada, Bell South, PacBell and Southwestern Bell. DSL Modem, always on. Need to enter ALL IP information from ISP in the Static IP address section of the Internet Settings page.

  • Page 103: Auto-Negotiation

    LOSSARY 802.11b The IEEE standard to which the 3Com OfficeConnect Wireless Cable/DSL Gateway conforms. This standard provides for 1,2,5 and 11 Mbps data rates and a set of fundamental signaling methods and other services (see WECA). 10BASE-T The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable.
  • Page 104 DNS Server Address DNS stands for Domain Name System, which allows Internet host computers to have a domain name (such as 3com.com) and one or more IP addresses (such as 192.34.45.8). A DNS server keeps a database of host computers and their respective domain names and IP addresses, so...
  • Page 105 LOSSARY your Internet browser), the user is sent to the proper IP address. The DNS server address used by the computers on your home network is the location of the DNS server your ISP has assigned. DSL modem DSL stands for digital subscriber line. A DSL modem uses your existing phone lines to send and receive data at high speeds.

  • Page 106: Infrastructure Mode

    LOSSARY A device that regenerates LAN traffic so that the transmission distance of that signal can be extended. Hubs are similar to repeaters, in that they connect LANs of the same type; however they connect more LANs than a repeater and are generally more sophisticated. IEEE Institute of Electrical and Electronics Engineers.

  • Page 107: Network Interface

    LOSSARY Media Access Control. A protocol specified by the IEEE for determining which devices have access to a network at any one time. MAC Address Media Access Control Address. Also called the hardware or physical address. A layer 2 address associated with a particular network device. Most devices that connect to a LAN have a MAC address assigned to them as they are used to identify other devices in a network.
  • Page 108 LOSSARY SSID Service Set Identifier. Some vendors of wireless products use SSID interchangeably with ESSID. Subnet Address An extension of the IP addressing scheme that allows a site to use a single IP network address for multiple physical networks. Subnet mask A subnet mask, which may be a part of the TCP/IP information provided by your ISP, is a set of four numbers configured like an IP address.
  • Page 109 LOSSARY Wired Equivalent Privacy. A shared key encryption mechanism for wireless networking. Encryption strength is 40/64 bit or 128 bit. WiFi Wireless Fidelity. This is the certification granted by WECA to products that meet their interoperability criteria. (see also 802.11b, WECA) Wireless Client The term used to describe a desktop or mobile PC that is wirelessly connected to your wireless network...
  • Page 110 LOSSARY...
  • Page 111 NDEX Access Rights 66 Addresses IP 85 Administration Password 32, 43 Automatic Addressing 87 Cable Specifications 90, 93 Channels 115 Clone MAC address 58 Configuration backup 70 restore 70 Conventions notice icons, About This Guide 8 text, About This Guide 8 Country Selection 30 DHCP 35, 38, 45, 87 DHCP Server 27...
  • Page 112 NDEX Password 29, 43 PC Privileges 65 PING 67 PPPoE 21, 28, 34, 55, 59 PPTP 21, 55, 60 Profile 53 Remote Administration 68 Reset to Factory Defaults 71, 76 Restart 69 Safety Information 19 Security 67 Setup Wizard 29, 44 Special Applications 63 Specifications technical 89...

  • Page 113: Fcc Statement

    FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules, and the Canadian Department of Communications Equipment Standards entitled, “Digital Apparatus,” ICES-003. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

  • Page 114: Ce Statement (Europe)

    CE Statement This product complies with the European Low Voltage Directive (Europe) 73/23/EEC, EMC Directive 89/336/EEC as amended by European Directive 93/68/EEC. CSA Statement This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

  • Page 115: Regulatory Notices For The Wireless Cable /Dsl Gateway

    Channels Use of the Wireless Cable/DSL Gateway is only authorized for the channels approved by each country. For proper installation, login to the management interface and select your country from the drop down list. Table 5 agencies: Table 5 Channels Channels 1 - 13 1 - 11...

  • Page 116: Information To The User

    Information to the If this equipment does cause interference to radio or television reception, User which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: The user may find the following booklet prepared by the Federal Communications Commission helpful:...
  • Page 117 Exposure to Radio Frequency Radiation: The radiated output power of the 3Com OfficeConnect Wireless Cable/DSL Gateway is far below the FCC radio frequency exposure limits. Nevertheless, the 3Com OfficeConnect Wireless Cable/DSL Gateway shall be used in such manner that the potential for human contact during normal operation is minimized.
  • Page 118 FCC Section 2.1091. Statement (U.S.) In order to comply with the FCC RF exposure requirements, the 3Com OfficeConnect Wireless Cable/DSL Gateway must only be installed with approved antennas and a minimum separation distance of 20 cm (8 in) must be maintained from the antenna to any nearby persons.
  • Page 120 3Com Corporation, Corporate Headquarters, 5400 Bayfront Plaza, Santa Clara, CA 95052-8145, USA. To learn more about 3Com products and services, visit our World Wide Web site at www.3com.com All specifications are subject to change without notice. Copyright © 2002 3Com Corporation. All rights reserved.

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