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AFETY

AND

EGULATORY

TATEMENTS

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

: Exceptional care must be taken during installation and removal of the

unit.

WARNING

: Only stack the Gateway with other OfficeConnect units.

WARNING

: To ensure compliance with international safety standards, only use the

power adapter that is supplied with the unit.

WARNING

: The socket outlet must be near to the unit and easily accessible. You

can only remove power from the unit by disconnecting the power cord from the
outlet.

WARNING

: This unit operates under SELV (Safety Extra Low Voltage) conditions

according to IEC 950. The conditions are only maintained if 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

Gateway. If you have a physical problem with the unit that cannot be solved with
problem solving actions in this guide, contact your supplier.

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

WARNHINWEIS:

Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen

Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu befolgen.
Sie müssen die folgenden Sicherheitsinformationen sorgfältig durchlesen, bevor Sie
das Geräts installieren oder ausbauen:

WARNHINWEIS:

Bei der Installation und beim Ausbau des Geräts ist mit höchster

Vorsicht vorzugehen.

WARNHINWEIS:

Stapeln Sie das Geräts nur mit anderen OfficeConnect Gerätes

zusammen.

WARNHINWEIS:

Aufgrund von internationalen Sicherheitsnormen darf das Gerät

nur mit dem mitgelieferten Netzadapter verwendet werden.

Содержание OfficeConnect 3C855

Страница 1: ...http www 3com com Part No DUA0085 5AAA02 Published January 2002 OfficeConnect Cable DSL Gateway User Guide 3C855 ...

Страница 2: ... portion of any legend provided on any licensed program or documentation contained in or delivered to you in conjunction with 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 and OfficeConnect are registered trademarks of 3Com Corporation The 3Com logo is a trademark of 3Com Corporatio...

Страница 3: ...nent Requirements 10 Front Panel 11 Rear Panel 12 2 HARDWARE INSTALLATION Introduction 13 Positioning the Gateway 13 Safety Information 13 Using the Rubber Feet 13 Before you Install your Gateway 14 Powering Up the Gateway 14 Connecting the Cable DSL Gateway 14 3 SETTING UP YOUR COMPUTERS Obtaining an IP Address Automatically 17 Windows 2000 17 Windows 95 98 ME 18 Macintosh 18 PPPoE Client Softwar...

Страница 4: ...rd 33 LAN Settings 34 Unit Configuration 34 DHCP Clients List 34 Internet Settings 36 Connection to ISP 36 IP Allocation Mode 36 PPP over Ethernet connection 37 Dynamic IP Address 38 Static IP Address 38 Advanced Clone MAC 39 Firewall 40 Virtual Servers 40 Virtual DMZ 40 Virtual Server 40 Special Applications 42 PCs Privileges 44 Security 46 Allow PING from the Internet 46 Disable Firewall 46 Syst...

Страница 5: ...1 Managing the Cable DSL Gateway over the Network 61 IP Addresses and Subnet Masks 61 Type One 61 Type Two 62 How does a Device Obtain an IP Address and Subnet Mask 62 DHCP Addressing 62 Static Addressing 63 Auto IP Addressing 63 C TECHNICAL SPECIFICATIONS Interfaces 65 Operating Temperature 65 Power 65 Humidity 65 Dimensions 65 Weight 65 Standards 65 System Requirements 66 Operating Systems 66 Et...

Страница 6: ...E END USER SOFTWARE LICENCE AGREEMENT 3Com Corporation END USER SOFTWARE LICENSE AGREEMENT 69 F ISP INFORMATION Information Regarding Popular ISPs 71 GLOSSARY INDEX ...

Страница 7: ...egory 3 and Category 5 Twisted Pair Cables are referred to as Twisted Pair Cables throughout this guide Conventions Table 1 and Table 2 list conventions that are used throughout this guide Table 1 Notice Icons Icon Notice Type Description Information note Information that describes important features or instructions Caution Information that alerts you to potential loss of data or potential damage ...

Страница 8: ...rt please refer to the Support and Safety Information sheet Related Documentation In addition to this guide each OfficeConnect Cable DSL Gateway document set includes one Installation Guide This guide contains the instructions you need to install and configure your Cable DSL Gateway Product Registration You can now register your OfficeConnect Cable DSL Gateway on the 3Com web site and receive up t...

Страница 9: ...the combined power of all of your computers OfficeConnect Cable DSL Gateway The OfficeConnect Cable DSL Gateway is designed to provide a cost effective means of sharing a single broadband Internet connection amongst several computers The Gateway also provides protection in the form of an electronic firewall preventing anyone outside of your network from seeing your files or damaging your computers...

Страница 10: ...ge Contents The OfficeConnect Cable DSL Gateway kit includes the following items One OfficeConnect Cable DSL Gateway One power adapter for use with the Gateway Four rubber feet One Ethernet cable One CD ROM containing the Gateway Discovery program and this User Guide Installation Guide One Support and Safety Information Sheet One Warranty Flyer If any of these items are missing or damaged please c...

Страница 11: ...s 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 Flashing slowly The Gateway has completed the Reset to Factory Defaults process and is waiting for you to reset the unit To do this r...

Страница 12: ...anel Figure 4 of the Gateway contains four LAN ports one Ethernet Cable DSL port and a power adapter socket Figure 4 Cable DSL Gateway Rear Panel 5 Power Adapter socket Only use the power adapter that is supplied with this Gateway Do not use any other adapter 6 Ethernet Cable DSL port Use the supplied patch cable to connect the Gateway to the 10BASE T port on your cable or DSL modem This port will...

Страница 13: ... section in Appendix D before you start VORSICHT Bitte lesen Sie den Abschnitt Wichtige Sicherheitsinformationen sorgfältig durch bevor Sie das Gerät einschalten AVERTISSEMENT Veuillez lire attentivement la section Consignes importantes de sécurité avant de mettre en route When positioning your Gateway ensure It is out of direct sunlight and away from sources of heat Cabling is away from power lin...

Страница 14: ...SP allocates fixed or static IP information you need the following information IP Address ____ ____ ____ ____ Subnet Mask ____ ____ ____ ____ Default Gateway address ____ ____ ____ ____ DNS address ____ ____ ____ ____ If your ISP allocates IP information dynamically over a protocol other than PPPoE you do not need any further information Powering Up the Gateway 1 Plug the power adapter into the po...

Страница 15: ... DSL modem Check that the Cable DSL status LED lights on the Gateway 3 Connect the cable or DSL modem to the Internet 4 Connect your computer to one of the four LAN ports on the Gateway using a twisted pair cable Check that the corresponding LAN status LED on the Gateway lights You have now completed the hardware installation of your Gateway You now need to set up your computers so that they can m...

Страница 16: ...16 CHAPTER 2 HARDWARE INSTALLATION ...

Страница 17: ...ROM to detect and configure your Gateway Refer to Appendix A for information on using the Discovery program Obtaining an IP Address Automatically Windows 2000 If you are using a Windows 2000 based computer use the following procedure to change your TCP IP settings 1 From the Windows Start Menu select Settings Control Panel 2 Double click on Network and Dial Up Connections 3 Double click on Local A...

Страница 18: ...our TCP IP settings 1 From the desktop select Apple Menu Control Panels and TCP IP 2 In the TCP IP control panel set Connect Via to Ethernet From the list select Ethernet 3 In the TCP IP control panel set Configure to Using DHCP Server 4 Close the TCP IP dialog box and save your changes 5 Restart your computer PPPoE Client Software If you have PPPoE client software installed on your computer you w...

Страница 19: ...s as it is not required for use with the Gateway Web Proxy Settings Ensure that you do not have a web proxy enabled on your computer Go to the Control Panel and click on Internet Options Select the Connections tab and click on the LAN Settings button at the bottom Make sure that the Use Proxy Server option is unchecked ...

Страница 20: ...20 CHAPTER 3 SETTING UP YOUR COMPUTERS ...

Страница 21: ...teway Refer to chapter 2 for details on how to do this 2 Launch your Web browser on the computer Enter the following URL in the location or address field of your browser http 192 168 1 1 Figure 9 Figure 9 Web Browser Location Field Factory Default 3 To log in as an administrator enter the password the default setting is admin in the System Password field and click Log in Figure 10 Be sure to bookm...

Страница 22: ...t Cable DSL Gateway Welcome screen will appear Figure 11 If your Gateway has not been configured before the Wizard will launch automatically refer to Figure 12 Figure 11 OfficeConnect Cable DSL Gateway Welcome Screen By selecting the Wizard tab on the Welcome screen Figure 12 you will be guided step by step through a basic setup procedure ...

Страница 23: ...ssword in both the New Password and Confirm Password 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 1 Password is case sensitive 2 Write the new password down and keep it in a safe place so that you can change your settings in the future Click Next to display the Time Zone setup screen Fig...

Страница 24: ...e updated for daylight savings time automatically WAN Settings Figure 15 Internet Settings Screen This Internet Addressing Mode window allows you to set up the Gateway for the type of Internet connection you have Before setting up your Internet connection mode have the modem setting information from your ISP handy See Accessing the Wizard on page 21 Select the Internet Addressing mode and click Ne...

Страница 25: ...ox 5 Enter your PPP over Ethernet service name in the PPPoE Service Name text box This is optional Not all ISPs require a PPPoE service name Do not enter anything in this box if your ISP does not require a service name 6 Check all of your settings and then click Next Dynamic IP Address Mode To setup the Gateway for use with a dynamic IP address connection 1 Select the ISP provides configuration dy...

Страница 26: ...ess connection use the following procedure 1 Select the ISP has provided a static IP address radio button See Figure 15 and then click next Figure 19 Static IP Mode Screen 2 Enter your IP Address in the IP Address text box 3 Enter your subnet mask address in the Subnet Mask text box 4 Enter your ISP gateway address in the Internet ISP Gateway Address text box 5 Enter your primary DNS address in th...

Страница 27: ...CP server that can automatically configure the TCP IP settings of every computer on your network Figure 21 DHCP Server Setup Screen To activate the DHCP Server option select Enable the DHCP server with the following settings and specify the IP pool range The largest available continuous IP pool will be automatically entered if this is not appropriate make your required changes To disable DHCP sele...

Страница 28: ...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 options you may need to reconfigure the computer you are using in order to make contact with the Gateway again Your Gateway is now configured and ready for use ...

Страница 29: ...ettings allows you to configure IP address and subnet mask information setup DHCP server parameters and display the DHCP client list Internet Settings sets up Internet addressing modes such as PPPoE connection dynamic IP address allocation and static IP address settings Firewall allows configuration of the Gateway s firewall features Virtual Servers Special Applications PCs Privileges and security...

Страница 30: ...reen Figure 23 OfficeConnect Cable DSL Gateway Welcome Screen The Welcome section allows you to view the Notice board and to change your Password You can also gain access to the Configuration Wizard See Accessing the Wizard on page 21 for details ...

Страница 31: ...rough the Gateway Configuration Pages 31 Notice Board Figure 24 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 ...

Страница 32: ...mote Administration It is possible to administer the Gateway from the Internet To do this 1 Check the Enable administration from an Internet Host box 2 For added security you may specify the IP address of the remote system This will prevent other remote hosts from accessing the administration pages If you wish to allow any remote host to administer the Gateway type 0 0 0 0 in the Host IP Address b...

Страница 33: ...gating Through the Gateway Configuration Pages 33 Setup Wizard Figure 26 Wizard Screen Click the WIZARD button to launch the configuration wizard Refer to Chapter 4 for information on how to run the wizard ...

Страница 34: ...1 2 If you want to use the OfficeConnect Cable DSL Gateway as a DHCP Server click in the Enable check box 3 Clicking on Auto Range button will generate the IP pool address from 192 168 1 2 to 192 168 1 254 for the DHCP Server Parameters field Auto Range will automatically choose the largest available range of addresses 4 Check all of your settings and then click Apply DHCP Clients List Figure 28 D...

Страница 35: ... a device to be cleared The lease time is set at 12 hours If a PC has been switched off using the Release Button would allow the 12 hour lease time to be cleared The IP address would then be available for another device if there were no other IP addresses available As the IP address is fixed to a MAC address then each PC will normally be issued with the same IP address The only time that a PC will...

Страница 36: ...ally allocated If PPPoE is disabled you will also be able to select Static IP address to be specified manually If you are unsure which setting you require your ISP should be able to advise you When the Cable DSL Internet Settings Connection to ISP page appears Figure 30 you will be asked to enter the information you received from your ISP If you have the information and your ISP has given you an I...

Страница 37: ...PPP over Ethernet user name in the PPPoE User Name text box 3 Enter a password in the PPPoE Password and Confirm Password text boxes 4 Enter your PPP over Ethernet service name in the PPPoE Service Name text box This is optional Not all ISPs require a PPPoE service name 5 Select an idle time from the Maximum Idle Time drop down list This value will correspond to the amount of idle time no Internet...

Страница 38: ... IP Address automatically allocated in the IP Allocation Mode field Figure 31 2 Enter your primary and secondary DNS addresses Your ISP should provide your primary and optional secondary DNS addresses Enter the addresses in the appropriate text boxes If you are using the DHCP option which automatically assigns your IP address the value 0 0 0 0 will already by entered in the text box 3 Enter the Ho...

Страница 39: ...xt box 5 Enter your primary DNS address in the Primary DNS Address text box 6 Enter your secondary DNS address in the Secondary DNS Address text box This step is optional Not all ISPs require a secondary DNS address 7 Check all of your settings and then click Apply Advanced Clone MAC Figure 33 Clone MAC Address Screen If your ISP requires an assigned MAC address click Internet Settings Advanced to...

Страница 40: ...ure should be used only if the Virtual Server or Special Applications options do not provide the level of access needed for certain applications To configure one of your computers as a DMZ host enter the last digit s of the IP address of the computer in the IP Address of DMZ Host text box and then click the SAVE button Virtual Server Activating and configuring a virtual server allows one or more o...

Страница 41: ... text box 3 Select the Service from the pull down list Figure 35 Figure 35 Virtual Servers Settings Screen Or Select Custom to specify a suitable name for the service and then enter the port numbers required for that service Figure 36 Figure 36 Custom Setup Screen 4 Click Add button to save the settings The port numbers are specified using a comma separated list with hyphens to denote port number ...

Страница 42: ...ion only supports a single computer user and up to 10 Special Applications can be defined Any incoming ports opened by a Special Application trigger will be closed after five minutes of inactivity To configure special access 1 Click on the New button 2 Select the applications from the pull down list Figure 38 Figure 38 Special Application Settings Screen Or select Other to specify a suitable name ...

Страница 43: ...ing Through the Gateway Configuration Pages 43 Figure 39 Other Applications Setup Screen 3 Click Add to save your settings Only one computer on your network can be configured for special access at any one time ...

Страница 44: ...ou to assign different access rights for different computers on your network To use access control for all computers 1 Click in the PCs access authorized services only radio button 2 Select All PCs to setup the access rights for all computers connected to the gateway 3 Select authorized services by clicking in the appropriate check box es Figure 41 Figure 41 All PCs Setup Screen 4 Access rights al...

Страница 45: ...ts for different computers 1 Click in the PCs access authorized services only radio button 2 Click on the New button to display PC Privileges setting screen 3 Enter the last digit s of the IP address of the computer in the PC s IP Address text box 4 Select authorized services by clicking in the appropriate check box es Figure 42 Figure 42 PC Privileges Setup Screen 5 Activate the Allow or Block ra...

Страница 46: ...s to ensure that everything is working correctly By default the Gateway has PING disabled in order to make the device more difficult to find on the Internet and less prone to attack This feature is enabled by clicking on the check box so that a tick can be seen and then pressing the Apply button 3Com recommends that you leave this disabled Disable Firewall The Gateway contains a firewall that dete...

Страница 47: ...ay is not operating correctly you can choose to restart the Gateway Pressing the Restart the Gateway button will cause the Gateway to restart 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 wh...

Страница 48: ...g the correct time in the log files If you use Daylight saving tick the Enable Daylight savings box and then click Apply Figure 45 The Gateway reads the correct time from NTP servers on the Internet and sets its system clock accordingly The Daylight Savings option merely advances the system clock by one hour It does not cause the system clock to be updated for daylight savings time automatically ...

Страница 49: ... to reinstate the configuration settings previously saved to a file press the Browse button to locate the backup file on your computer and then click the RESTORE button to copy the data into the Gateway s memory Reset to Factory Default If you want to reset the settings on your Gateway to those that were loaded at the factory click RESET You will lose all your configuration changes The Gateway LAN...

Страница 50: ... Although the upgrade process has been designed to preserve your configuration settings it is recommended that you make a backup of the configuration beforehand in case the upgrade process fails for any reason for example the connection between the computer and the Gateway is lost while the new software is being copied to the Gateway The upgrade procedure can take up to two minutes and is complete...

Страница 51: ...Navigating Through the Gateway Configuration Pages 51 Status and Logs Figure 48 Status and Logs Screen ...

Страница 52: ...and Logs screen display a tabular representation of your network and Internet connection Status to display the current unit status including a summary of the configuration Logs 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 screen if you contact your supplier for technical support ...

Страница 53: ...guration Pages 53 Support Figure 49 Support Screen Selecting Support option on the main menu generates the support links screen which contains a list of Internet links that provide information and support concerning the Gateway Figure 49 ...

Страница 54: ...54 CHAPTER 5 GATEWAY CONFIGURATION ...

Страница 55: ...00Mbps Some NICs do not have status LEDs in which case a diagnostic program may be available that can give you this information Ensure that you have configured your computer as described in Chapter 3 Setting Up Your Computers Restart your computer while it is connected to the Gateway to ensure that your computer receives an IP address When entering the address of the Gateway into your web browser ...

Страница 56: ...een but cannot log on because you do not know or have forgotten the password follow the steps below to reset the Gateway to it s factory default configuration Warning all your configuration changes will be lost and you will need to run the configuration wizard again before you can re establish your Gateway connection to the Internet Also other computer users will lose their network connections whi...

Страница 57: ...ng from Corrupted Software If the Alert LED remains permanently on following power up it is possible that the system software has become corrupted In this condition the Gateway will enter a recovery state DHCP is disabled and the LAN IP address is set to 192 168 1 1 Follow the instructions below to upload a new copy of the system software to a Gateway unit in this state Ensure that one of your com...

Страница 58: ...3com com Does the Gateway support virtual private networks VPNs The Gateway supports VPN passthrough which allows VPN clients on the LAN to communicate with VPN hosts on the Internet It is also possible to set up VPN hosts on your LAN that clients elsewhere on the Internet can connect to but this is not a recommended configuration Where can I download software upgrades for the Gateway Upgrades to ...

Страница 59: ...8 2000 Me NT 1 Insert the Gateway CD ROM in the CD ROM drive on your computer A menu will appear select Gateway Discovery Note Discovery will find the Gateway even if it is unconfigured or misconfigured Figure 50 Discovery Welcome Screen 2 When the Welcome screen is displayed click on Next and wait until the application discovers the Gateways connected to your LAN Figure 51 Discovered Gateway ...

Страница 60: ...igure 52 shows an example Discovered Devices screen Highlight the Cable DSL Gateway by clicking on it and press Next Figure 52 Discovery Finish Screen 4 Click on Finish to launch a web browser and display the login page for the Gateway ...

Страница 61: ...he address of the destination network IP addresses have the format n n n x where n is a decimal number between 0 and 255 and x is a number between 1 and 254 inclusive However an IP Address alone is not enough to make your device operate In addition to the IP address you need to set a subnet mask All networks are divided into smaller sub networks and a subnet mask is a number that enables a device ...

Страница 62: ...et mask These are Dynamic Host Configuration Protocol DHCP Addressing Static Addressing Automatic Addressing Auto IP Addressing DHCP Addressing The Cable DSL Gateway contains a DHCP server which allows computers on your network to obtain an IP address and subnet mask automatically DHCP assigns a temporary IP address and subnet mask which gets reallocated once you disconnect from the network DHCP w...

Страница 63: ...o acquire an address using DHCP but are unable to contact a DHCP server Automatic IP addressing is a scheme where devices allocate themselves 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 address...

Страница 64: ...64 APPENDIX B IP ADDRESSING ...

Страница 65: ...o 40 C 32 F to 105 F Power 13V DC OfficeConnect Power Adapter Humidity 0 to 90 non condensing humidity Dimensions Width 220 mm 8 7 in Depth 135 mm 5 3 in Height 24 mm 1 in Weight Approximately 535 g 1 18 lbs Standards Functional ISO 8802 3 IEEE 802 3 Safety UL 1950 EN 60950 CSA 22 2 950 IEC 60950 EMC EN 55022 Class B EN 55024 AS NZS 3548 B FCC Part 15 Class B ICES 003 Class B VCCI Class B CNS 1343...

Страница 66: ...ndows 2000 Mac OS 8 5 or higher Unix 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 Category 3 Ethernet or Category 5 Fast Ethernet or Dual Speed Ethernet Twisted Pair shielded and unshielded cable types Maximum cable length of 100m 327 86 ft ...

Страница 67: ...ed also operates under SELV conditions WARNING There are no user replaceable fuses or user serviceable parts inside the Gateway If you have a physical problem with the unit that cannot be solved with problem solving actions in this guide contact your supplier 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...

Страница 68: ...ous demandons de lire attentivement les consignes suivantes de sécurité avant d installer ou de retirer l appareil AVERTISSEMENT Faites très attention lors de l installation et de la dépose du groupe AVERTISSEMENT Seulement entasser le moyer avec les autres moyeux OfficeConnects AVERTISSEMENT Pour garantir le respect des normes internationales de sécurité utilisez uniquement l adaptateur électriqu...

Страница 69: ... covered by this Agreement may contain data encryption code which is unlawful to export or transfer from the United States or country where you legally obtained it without an approved U S Department of Commerce export license and appropriate foreign export or import license as required You agree that you will not export or re export the Technical Data or any copies thereof or any products utilizin...

Страница 70: ...70 APPENDIX E END USER SOFTWARE LICENCE AGREEMENT ...

Страница 71: ...r PC You will need to enter the user name and password that your ISP provided to you in the PPPoE page of the Gateway Leave the service name blank unless your ISP requires it Bell Century Tel Citizens Primus Prodigy Snet Sprint FC Verizon First World Brightnet Earthlink Ameritech Covad Mindspring Sympatico DSL USwest Static DSL DSL Modem always on Need to enter ALL IP information from ISP in the S...

Страница 72: ...72 APPENDIX F ISP INFORMATION ...

Страница 73: ...ps Category 5 Cables One of five grades of Twisted Pair TP cabling defined by the EIA TIA 586 standard Category 5 can be used in Ethernet 10BASE T and Fast Ethernet networks 100BASE TX and can transmit data up to speeds of 100 Mbps Category 5 cabling is better to use for network cabling than Category 3 because it supports both Ethernet 10 Mbps and Fast Ethernet 100 Mbps speeds Client The term used...

Страница 74: ...he Internet Half Duplex A system that allows packets to transmitted and received but not at the same time Contrast with full duplex Hub 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...

Страница 75: ...ay allows you to access the Internet from any computer on your home network without having to purchase more IP addresses from your ISP Network A Network is a collection of computers and other computer equipment that are connected for the purpose of exchanging information or sharing resources Networks vary in size some are within a single room others span continents Network Interface Card NIC A cir...

Страница 76: ...nsmission Control Protocol Internet Protocol This is the name for two of the most well known protocols developed for the interconnection of networks Originally a UNIX standard TCP IP is now supported on almost all platforms and is the protocol of the Internet TCP relates to the content of the data travelling through a network ensuring that the information sent arrives in one piece when it reaches ...

Страница 77: ...H Host Name 25 I Internet addresses 61 Internet Addressing Mode 24 IP Address 26 IP address 27 34 61 IP Allocation 36 ISP gateway address 26 L LAN 27 34 LED 11 login 60 M MAC address 26 35 N network addresses 61 P Password 32 password 21 PING 46 PPPoE 18 37 PPPoE Mode 25 R Remote Administration 32 S Safety Information 13 Security 46 Setup Wizard 21 33 specifications technical 65 Static Addressing ...

Страница 78: ...78 INDEX ...

Страница 79: ......

Страница 80: ...m 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 3Com and OfficeConnect are registered trademarks of 3Com Corporation All other company and product names may be trademarks of their respective companies ...

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