3Com 3CRADSL72 User Manual Download Page 78

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PPENDIX

A: IP A

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.

Summary of Contents for 3CRADSL72

Page 1: ...http www 3com com Part No DUA ADSL72 AAA01 Rev 01 Published Sept 2003 ADSL 11g Wireless Router User Guide 3CRADSL72 ...

Page 2: ...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 the 3Com logo are registered trademarks of 3Com Corporation Intel and Pentium are registered trademarks of Intel Corporation Microsoft MS DOS Windows and Windows NT a...

Page 3: ...em and Component Requirements 14 Front Panel 14 Rear Panel 15 2 HARDWARE INSTALLATION Introduction 17 Safety Information 17 Positioning the Router 17 Using the Rubber Feet 18 Powering Up the Router 18 Connecting the Router 18 3 SETTING UP YOUR COMPUTERS Obtaining an IP Address Automatically 23 Windows 2000 23 Windows XP 25 Windows 95 98 ME 25 Macintosh 25 Disabling PPPoE and PPTP Client Software 2...

Page 4: ... DHCP Client List 38 Internet WAN 39 Connection Type 39 PPPoE 40 PPPoA 41 Disable Internet Sharing 42 Multiple Protocol over ATM 43 DNS 44 Wireless 44 Channel and SSID 45 Security 46 Disabled 47 WPA PSK no server 47 128 bit WEP 48 64 bit WEP 49 WPA with RADIUS Server 50 Firewall 51 Application Gateways 52 Virtual Servers 53 Client IP Filters 54 Access Control 54 URL Blocking 56 Schedule Rule 57 MA...

Page 5: ... 6 TROUBLESHOOTING Basic Connection Checks 69 Browsing to the Router Configuration Screens 69 Connecting to the Internet 70 Forgotten Password and Reset to Factory Defaults 70 Wireless Networking 71 Recovering from Corrupted Software 72 Frequently Asked Questions 73 A IP ADDRESSING The Internet Protocol Suite 75 Managing the Router over the Network 75 IP Addresses and Subnet Masks 75 How does a De...

Page 6: ...B TECHNICAL SPECIFICATIONS Standards 80 C SAFETY INFORMATION D END USER SOFTWARE LICENSE AGREEMENT GLOSSARY INDEX REGULATORY NOTICES FOR THE ADSL 11G WIRELESS ROUTER ...

Page 7: ...ote is shipped with the ADSL 11g Wireless Router and contains information that differs from the information in this guide follow the 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 ADSL 11g Wireless Router is referred to...

Page 8: ...Caution Information that alerts you to potential loss of data or potential damage to an application system or device Warning Information that alerts you to potential personal injury Table 2 Text Conventions Convention Description The words enter and type When you see the word enter in this guide you must type something and then press Return or Enter Do not press Return or Enter when an instruction...

Page 9: ...or technical support questions For information about contacting Technical Support please refer to the Support and Safety Information sheet Related Documentation In addition to this guide each Router document set includes one Installation Guide This guide contains the instructions you need to install and configure your Router ...

Page 10: ...10 ABOUT THIS GUIDE ...

Page 11: ...a cost effective means of sharing a single broadband Internet connection amongst several wired and wireless computers The Router also provides protection in the form of an electronic firewall preventing anyone outside of your network from seeing your files or damaging your computers The Router can also prevent your users from accessing Web sites which you find unsuitable Figure 1 shows an example ...

Page 12: ...you use the Router in your 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 DSL Router ...

Page 13: ...all network address settings DHCP Acts as a Virtual server to enable remote access to Web FTP and other services on your network Security Firewall protection against Internet hacker attacks and encryption to protect wireless network traffic Package Contents The Router kit includes the following items One ADSL 11g Wireless Router One power adapter for use with the Router Four rubber feet One Ethern...

Page 14: ...g wireless NIC An active ADSL subscription and connection A Web browser that supports JavaScript such as Netscape 4 7 or higher Internet Explorer 5 0 or higher or Mozilla 1 2 1 or higher Front Panel The front panel of the Router contains a series of indicator lights LEDs that help describe the state of various networking and connection operations Figure 3 Router Front Panel 1 Power LED Green Indic...

Page 15: ...nothing is connected or the connected device is switched off or there is a problem with the connection refer to Chapter 6 Troubleshooting The port will automatically adjust to the correct speed and duplex Rear Panel The rear panel Figure 4 of the Router contains four LAN ports one ADSL port a reset button and a power adapter socket Figure 4 Router Rear Panel 6 Wireless Antennae The antennae on the...

Page 16: ...t interface for example due to a lost password then you may use this button Refer to Forgotten Password and Reset to Factory Defaults on page 70 for further details 9 Power Adapter Socket Only use the power adapter that is supplied with this Router Do not use any other adapter 10 ADSL Port Using the RJ11 cable provided you should connect your Router to the telephone socket via the splitters and mi...

Page 17: ...ement la section Consignes importantes de sécurité avant de mettre en route Positioning the Router You should place the Router in a location that is conveniently located for connection to the telephone socket is centrally located to the wireless computers that will connect to the Router A suitable location might be on top of a high shelf or similar furniture to optimize wireless connections to com...

Page 18: ... 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 flat top units Only stick the feet to the marked areas at each corner of the underside of your Router Powering Up the Router To power up the Router 1 Plug the power adapter into the power adapter socket located on the back panel of the Router 2 P...

Page 19: ... If you are using splitterless ADSL service add low pass filters between the ADSL wall jack and your telephones These filters pass voice signals through but filter data signals out Either If you are using a full rate G dmt connection your service provider will attach the outside ADSL line to a data voice splitter In this case you can connect your phones and computer directly to the splitter as sho...

Page 20: ...a splitterless G lite connection then your service provider will attach the outside ADSL line directly to your phone system In this case you can connect your phones and computer directly to the incoming ADSL line but you will have to add low pass filters to your phones as shown below Figure 7 ...

Page 21: ... 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 computer note that you may lose contact with the Router if you change the wireless configuration To communicate wirelessly with your Router your wireless NIC should be set as follows Encryption none Service Ar...

Page 22: ...22 CHAPTER 2 HARDWARE INSTALLATION ...

Page 23: ...is follow the instructions in this chapter 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 Area Connection 4 Click on Properties 5 A screen similar to Figure...

Page 24: ...l 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 9 Click OK Figure 9 Internet Protocol TCP IP Properties Screen 7 Restart your computer ...

Page 25: ... Restart your computer Windows 95 98 ME 1 From the Windows Start Menu select Settings Control Panel 2 Double click on Network Select the TCP IP item for your network card and click on Properties 3 In the TCP IP dialog select the IP Address tab and ensure that Obtain IP address automatically is selected Click OK Macintosh If you are using a Macintosh computer use the following procedure to change y...

Page 26: ... similar to Figure 10 should be displayed 4 Select the Never Dial a Connection option Figure 10 Internet Properties Screen 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 Disabling Web Proxy Ensure that you do not have a web proxy enabled on your computer Go to the Control Panel and click on Internet Options Select...

Page 27: ...e that you have at least one computer connected to the Gateway Refer to Chapter 2 for details on how to do this 2 Launch your Web browser on the computer 3 Enter the following URL in the location or address field of your browser http 192 168 2 1 Figure 11 The Login screen displays Figure 11 Web Browser Location Field Factory Default 4 To log in as an administrator enter the password the default pa...

Page 28: ...en you have logged in either The Home screen will appear Figure 13 Select Wizard from the top menu bar or If your Router has not been configured before the Wizard will launch automatically refer to Figure 14 6 You will be guided step by step through a basic setup procedure ...

Page 29: ...Accessing the Wizard 29 Figure 13 Home Screen DSL Settings Figure 14 DSL Settings Screen ...

Page 30: ...fore setting up your DSL connection mode have your account information from your ISP ready Select a DSL mode from the following PPPoE see page 30 PPPoA see page 32 RFC1483 Routed see page 32 RFC1483 Bridged see page 32 and click Next For further information on selecting a mode see Internet WAN on page 39 PPPoE Mode Figure 15 PPPoE Screen ...

Page 31: ... Password text box 4 Enter your VPI and VCI informaiton in the VPI VCI text boxes 5 Check all of your settings and then click Next PPPoA Mode Figure 16 PPPoA Screen To setup the router for use with a PPP over ATM PPPoA connection use the following procedure 1 Enter your PPP over ATM user name in the Username text box 2 Enter your PPP over ATM password in the Password text box 3 Re type your PPP ov...

Page 32: ...outed Configuration Screen 1 Enter your Internet IP address in the WAN IP text box 2 Enter the subnet mask in the Subnet Mask text box 3 Enter your VPI and VCI informaiton in the VPI VCI text boxes 4 Enter the default gateway in the Default Gateway text box Check all of your settings and then click Next RFC1483 Bridged Mode To setup the Router for use with an RFC1483 bridged connection ...

Page 33: ...Accessing the Wizard 33 Figure 18 RFC1483 Bridged Configuration Screen 5 Enter your VPI and VCI informaiton in the VPI VCI text boxes ...

Page 34: ...u complete the Setup Wizard a configuration summary will display Verify the configuration information of the Router and then click Apply to save your settings 3Com recommends that you print this page for your records Your Router is now configured and ready for use See Chapter 5 for a detailed description of the Router configuration screens ...

Page 35: ...ss during initial configuration use the new IP address instead When you have browsed to the Router log in using your system password there is no password set by default Main Menu At the left side of all screens is a main menu as shown in Figure 20 on page 36 When you click on a topic from the main menu that page will appear in the main part of the screen Home Screen The Home screen allows you to v...

Page 36: ...cally assign IP addresses to each computer on your network The factory default settings for the DHCP server will work in most any application If you need to make changes to the settings you can do so The changes that you can make are Change the Internal IP address of the Router The default 192 168 2 1 Change the Subnet Mask The default 255 255 255 0 Enable Disable the DHCP Server Function Default ...

Page 37: ...o the network To view the list click DHCP client list LAN Settings Figure 21 LAN Settings Screen The LAN Settings screen is used to specify the LAN IP address of your Router and to configure the DHCP server 1 Select LAN Settings and then specify the Router IP Address and Subnet Mask in the appropriate fields The default IP address of the Gateway is 192 168 2 1 2 If you want to use the Gateway as a...

Page 38: ...This step is optional 6 Check all of your settings and then click Apply The DHCP server will give out addresses to both wired and wireless clients DHCP Client List Figure 22 DHCP Client 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 is set up as a DHCP server For each device that is connecte...

Page 39: ...nfigured the parameters for your DSL connection The information necessary to complete these screens should be obtained from your ISP First select the DSL connection mode from the four options available PPPoE PPP over Ethernet providing routing for multiple PCs see page 40 PPPoA PPP over ATM providing routing for multiple PCs see page 41 Disable Internet Sharing RFC1483 Bridged Mode for single PCs ...

Page 40: ...t Mask information provided by your ISP into the IP address and Subnet Mask fields 4 Enter the VPI and VCI parameters provided to you by your ISP in the VPI and VCI fields 5 Select the encapsulation type LLC or VC MUX in the Encapsulation Type field This information will have been provided to you by your ISP 6 If you want your Router to connect to the Internet every time a PC needs to access it ch...

Page 41: ...eld and proceed to step 4 If you ISP has assigned you a fixed or static IP addres select Yes in the IP assigned by ISP field Then enter the IP address and Subnet Mask information provided by your ISP into the IP address and Subnet Mask fields 4 Enter the VPI and VCI parameters provided to you by your ISP in the VPI and VCI fields 5 Select the encapsulation type LLC or VC MUX in the Encapsulation T...

Page 42: ...iod of inactivity specify a time in the Idle Time Minutes field Enter a value of 0 to disable this timeout 8 Click Apply Changes Disable Internet Sharing Figure 26 Disable Internet Sharing Screen 1 Enter the VPI and VCI parameters provided to you by your ISP in the VPI and VCI fields 2 Select the encapsulation type LLC or VC MUX in the Encapsulation Type field This information will have been provi...

Page 43: ... information provided by your ISP into the IP address Subnet Mask and Default Route fields 2 Enter the VPI and VCI parameters provided to you by your ISP in the VPI and VCI fields 3 Select the encapsulation type LLC or VC MUX in the Encapsulation Type field This information will have been provided to you by your ISP 4 Click Apply Changes ...

Page 44: ...pply Changes Many ISP s do not require you to enter this information into the Router If you are using a Static IP connection type then you may need to enter a specific DNS address and secondary DNS address for your connection to work properly If your connection type is Dynamic PPPoA or PPPoE it is likely that you do not have to enter a DNS address Wireless Figure 29 Wireless Screen ...

Page 45: ...uld give your wireless network a unique name 3 A feature of wireless networking is the ability for a wireless network adapter in a computer to look for an existing wireless network automatically This is done by setting the card s SSID setting to ANY Your Router is capable of blocking this random searching for a network If you disable the ESSID Broadcast feature the only way a computer can join the...

Page 46: ...e that you wish to use on your Router from the Transmission Rate drop down list Unless you are having problems with your Wireless Network it is recommended that you leave this setting on it s default value of Fully Automatic 6 Select whether you wish to use g Nitro Mode on your Router by selecting the appropriate g Nitro radio button Unless you are having problems with your Wireless Network it is ...

Page 47: ...reless networks it is often useful to use this security mode WPA PSK no server Figure 32 WPA PSK no server Screen WPA Wireless Protected Access provides dynamic key changes and constitutes the best security solution In a wireless network where not all devices support WPA WEP Wired Equivalent Privacy should be used 1 Enter the pre shared key in the Pre shared Key PSK field The pre shared key is a p...

Page 48: ...a securely over the wireless network Matching encryption keys must be setup on your Router and wireless client devices to use WEP 1 You can either enter your WEP key as 13 pairs of hex digits 0 9 A F or enter a memorable passphrase in the Passphrase box and then press the Generate button to generate the hex keys from the passphrase Note that the WEP keys on each device in the wireless network must...

Page 49: ...r your WEP key as 5 pairs of hex digits 0 9 A F or enter a memorable passphrase in the Passphrase box and then press the Generate button to generate the hex keys from the passphrase For 64 bit WEP you can enter up to four keys in the fields Key 1 to Key 4 The radio button on the left hand side selects the key that is used in transmitting data Note that all four WEP keys on each device in the wirel...

Page 50: ... a server to distribute keys to the clients This option requires that a Radius server is running on the network 1 Enter the IP address of the RADIUS server on your network into the RADIUS Server field 2 Enter the port that the RADIUS server is operating on in the RADIUS Port field 3 Enter the key for the RADIUS server in the RADIUS Key field 4 By default the WPA keys are changed every hour but if ...

Page 51: ...of Death PoD and Denial of Service DoS attacks You can turn the firewall function off if needed Turning off the firewall protection will not leave your network completely vulnerable to hacker attacks but it is recommended that you turn the firewall on whenever possible 1 Enable or Disable the Firewall as required by selecting the appropriate radio button 2 Press Apply Changes ...

Page 52: ...ranslation NAT feature of the Router A list of popular applications has been included to choose from Select your application from the drop down list at the top of the screen Select the row that you want to copy the settings to from the drop down list select the row you want to copy to and then click Copy To The settings will be transferred to the row you specified Click Apply Changes to save the s...

Page 53: ...Specify the Public Ports used by the application that will need to be opened up in the firewall for the application to work properly Also specify whether these ports are TCP or UDP 3 You can temporarily enable or disable each entry in the table by checking or unchecking the Enabled checkbox 4 Press Apply Changes Virtual Servers Figure 38 Virtual Servers Screen This function will allow you to route...

Page 54: ... port type TCP UDP or both TCP and UDP 3 Specify the Public port that will be seen by clients on the Internet and the LAN port which the traffic will be routed to 4 You can enable or disable each Virtual Server entry by checking or unchecking the appropriate Enable checkbox 5 Press the Set button to save the changes for each Virtual Server entry Client IP Filters The Router can be configured to re...

Page 55: ... Changes to save the settings To edit or delete specific Access Control rules click on the Edit or Delete links for the appropriate access control rule To control access to specific Internet services 1 Click on Add PC A screen similar to that shown below will appear Figure 40 Add PC Screen 2 Enter a desicription for the filter you are defining in the Client PC Description field 3 Enter the IP addr...

Page 56: ...t the bottom of the page under User Defined Service 5 If you want the restriction to only apply at certain times select the schedule rule to apply from the Schedule Rule drop down list Note that Schedule Rules are defined on the Schedule Rule page see page 57 6 Press OK to add the settings URL Blocking Figure 41 URL Blocking Screen To configure the URL Blocking feature use the table on the URL Blo...

Page 57: ...tion for WWW with URL Blocking in the Client PC Service table to filter out the websites and keywords specified in the table Schedule Rule Figure 42 Schedule Rule Screen The Router can be configured to restrict access to the Internet e mail or other network services at specific days and times These schedule rules are used by the rules defined on the Access Control page see Access Control on page 5...

Page 58: ...e 43 Add Schedule Rule Screen 2 Enter a name and comment for the schedule rule in the Name and Comment fields 3 Specify the schedule rules for the required days and times note that all times should be in 24 hour format 4 Press Apply Changes ...

Page 59: ...filter list will be denied access To Enable or Disable this feature select the appropriate Enable MAC Address Filtering radio button and press Apply Changes When you enable this feature you must enter the MAC address of each client on your network to allow network access Alternatively you can copy the MAC address by selecting the name of the computer from the DHCP Client List and then location in ...

Page 60: ...is feature on a temporary basis The computer in the DMZ is not protected from hacker attacks To put a computer in the DMZ enter the last digits of its LAN IP address in the Static IP field Put the IP address if known that will be accessing the DMZ PC into the Public IP field so that only the computer on the Internet at this address can access this PC without firewall protection If the IP address i...

Page 61: ...thing of interest might be there The Router can be set up so it will not respond to an ICMP Ping from the outside This heightens the level of security of your Router To turn off the ping response select Block ICMP Ping and click Apply Changes and the router will not respond to an ICMP ping from the Internet Security Log Figure 47 Security Log Screen This page shows any attempts that have been made...

Page 62: ...pecify a filename and location and then press OK Utilities This screen lets you manage different parameters of the router and perform certain administrative funcitons Restart Router Figure 48 Restart Router Screen Sometimes it may be necessary to Restart or Reboot the Router if it begins working improperly Restarting or Rebooting the Router will not delete any of your configuration settings Press ...

Page 63: ...will restore all of the settings in the Router to the factory default settings It is recommended that you backup your settings before you restore all of the defaults To restore the factory default settings press the Restore Defaults button Save Backup Settings Figure 50 Save Backup Settings Screen ...

Page 64: ...ation before performing a firmware update Restore Previous Settings Figure 51 Restore Previous Settings Screen This option will allow you to restore a previously saved configuration Please select the configuration file and press the Restore button Firmware Update Figure 52 Firmware Update Screen From time to time 3Com may release new versions of the Routers firmware Firmware updates contain improv...

Page 65: ...4admin 3Com recommends that you change the password for added security Keep your password in a safe place as you will need this password to log into the router in the future It is also recommended that you set a password if you plan to use the Remote management feature of this Router To change the password 1 Enter the current password into the Type in current password field 2 Enter the new passwor...

Page 66: ...ving The system clock may not update immediately Allow at least 15 minutes for the router to contact the time servers on the Internet and get a response You cannot set the clock yourself You can specify which SNTP servers the Router will use to update it s system clock although doing this should only be necessary if if you are experiencing difficulty Remote Management Before you enable this functi...

Page 67: ...be configured in a specific way to operate properly This usually requires opening TCP and UDP ports and in some instances setting trigger ports An application that is Universal Plug and Play compliant has the ability to communicate with the Router basically telling the Router which way it needs the firewall configured The Router ships with the Universal Plug and Play feature disabled If you are us...

Page 68: ...68 CHAPTER 5 ROUTER CONFIGURATION ...

Page 69: ...onfiguration screens check the following Confirm that the physical connection between your computer and the Router is OK and that the LAN Status LEDs on the Gateway and NIC are illuminated and indicating the same speed 10Mbps or 100Mbps 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 compu...

Page 70: ...re that you have entered the correct information into the Router configuration screens as required by your Internet Service Provider Use the Internet WAN screen to verify this Check that the PPPoE or PPPoA user name and password are correct Ensure that your computers are not configured to use a Web proxy On Windows computers this can be found under Control Panel Internet Options Connections Forgot...

Page 71: ...outer If you have a wired and a wireless NIC in the same computer ensure that the wired NIC is disabled Check the status of the Router Wireless LED it should be lit if wireless is enabled and will flash when there is wireless activity If not lit go to Wireless on page 44 and enable wireless networking Ensure that the TCP IP settings for all devices are correct Ensure that the Wireless Clients are ...

Page 72: ...espond to the Router channel number Please refer to your Wireless computer adapter documentation and vendor to do this Speed of connection The 802 11b and 802 11g standards will automatically choose the best speed depending on the quality of your connection As the signal quality weakens then the speed falls back to a lower speed The speeds supported by 802 11g are 54 Mbps 48 Mbps 36 Mbps 24 Mbps 1...

Page 73: ...ode Recovery utility in the Router 5 Follow the on screen instructions Enter the path and filename of the software image file 6 When the upload has completed the Router will restart run the self test and if successful resume normal operation 7 Refer to the Installation Guide to reconnect your Router to the telephone line and the computers in your network Do not forget to reconfigure the computer y...

Page 74: ... contact your supplier for more information or visit http www 3com es Does the Router support virtual private networks VPNs The Router 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 ca...

Page 75: ...vice over the network the Router must be correctly configured with the following IP information An IP address A Subnet Mask IP Addresses and Subnet Masks Each device on your network must have a unique IP address to operate correctly An IP address identifies the address of the device to which data is being sent and the address of the destination network IP addresses have the format n n n x where n ...

Page 76: ...ne 192 168 100 identifies the network on which the device resides Part two 8 identifies the device within the network This type of IP Address operates on a subnet mask of 255 255 255 0 See Table 3 for an example about how a network with three computers and a Router might be configured Table 3 IP Addressing and Subnet Masking Type Two In larger networks where there are more devices the IP address o...

Page 77: ... gets reallocated once you disconnect from the network DHCP will work on any client Operating System such as Windows 95 Windows 98 or Windows NT 4 0 Also using DHCP means that the same IP address and subnet mask will never be duplicated for devices on the network DHCP is particularly useful for networks with large numbers of users on them Static Addressing You must enter an IP Address and the subn...

Page 78: ... 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 79: ...ximum 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 54 Mbps 66 dBm typical Modulation CCK BPSK QPSK OFDM Encryption 40 64 bit WEP 128 bit WEP WPA Maximum clients 128 O P Power 18dBm Standard IEEE 802 11b Direct Sequence Spread Spectrum DSSS Transmission rate 11bps automatic fallback to 5 5 2 or 1 Mbps Maximum channels 14 ...

Page 80: ...s Width 220 mm 8 7 in Depth 133 mm 5 2 in Height 38 mm 1 5 in Weight Approximately 550 g 1 1 lbs Standards Functional ISO 8802 3 IEEE 802 3 IEEE 802 11b 802 11g Safety EN 60950 EMC EN 55022 Class B EN 55024 FCC Part 15 Class B ETSI EN 301 489 17 Radio ETS 300 328 2 4 GHz ISM band wide band transmission systems Environmental EN 60068 IEC 68 See FCC Statement on page 99 for conditions of operation ...

Page 81: ... XP Mac OS 8 5 or higher Unix Ethernet Performance The Router complies to the IEEE 802 3i u and x specifications Cable Specifications The Router 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 ...

Page 82: ...82 APPENDIX B TECHNICAL SPECIFICATIONS ...

Page 83: ...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 60950 The conditions are ...

Page 84: ...llen ob die Verwendung von Funkfrequenz in dem Bereich in dem der Bluetooth Access Point eingesetzt werden soll erlaubt ist VORSICHT Bei der Installation und beim Ausbau des Geräts ist mit höchster Vorsicht vorzugehen VORTSICHT Stapeln Sie das Geräts nur mit anderen Gerätes zusammen VORSICHT Aufgrund von internationalen Sicherheitsnormen darf das Gerät nur mit dem mitgelieferten Netzadapter verwen...

Page 85: ...vement toutes les consignes Nous vous demandons de lire attentivement les consignes suivantes de sécurité avant d installer ou de retirer l appareil AVERTISSEMENT La Router fournit et utilise de l énergie radioélectrique radio fréquence rf L utilisation de l énergie radioélectrique est interdite dans certains environnements L utilisateur devra se renseigner sur l autorisation de cette énergie dans...

Page 86: ...ilisateurs ou entretenues par les utilisateurs à l intérieur du moyeu Si vous avez un 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 de données RJ 45 Vous...

Page 87: ...INEERING You may transfer the Software Documentation and the licenses granted herein to another party in the same country in which you obtained the Software and Documentation if the other party agrees in writing to accept and be bound by the terms and conditions of this Agreement If you transfer the Software and Documentation you must at the same time either transfer all copies of the Software and...

Page 88: ...icable to the Software are as stated on the Limited Warranty Card or in the product manual whether in paper or electronic form accompanying the Software Such warranties and limitations of liability are incorporated herein in their entirety by this reference GOVERNING LAW This Agreement shall be governed by the laws of the State of California U S A excluding its conflicts of laws principles and exc...

Page 89: ...her wireless clients and which acts as a bridge between wireless clients and a wired network such as Ethernet Wireless clients can be moved anywhere within the coverage area of the access point and still connect with each other If connected to an Ethernet network the access point monitors Ethernet traffic and forwards appropriate Ethernet messages to the wireless network while also monitoring wire...

Page 90: ...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 Channel Similar to any radio device the Wireless Cable DSL router allows you to choose different radio channels in the wireless spectrum A channel is a particular frequency within the 2 4GHz spectrum within which the Router operates Client The ter...

Page 91: ...ed into the router and each of it s wireless clients Ethernet A LAN specification developed jointly by Xerox Intel and Digital Equipment Corporation Ethernet networks use CSMA CD to transmit packets at a rate of 10 Mbps over a variety of cables Ethernet Address See MAC address Fast Ethernet An Ethernet system that is designed to operate at 100 Mbps Firewall Electronic protection that prevents anyo...

Page 92: ...e routing of packets to addressed devices An IP address consists of 32 bits divided into two or three fields a network number and a host number or a network number a subnet number and a host number IP Address Internet Protocol Address A unique identifier for a device attached to a network using TCP IP The address is written as four octets separated with periods full stops and is made up of a netwo...

Page 93: ...ize some are within a single room others span continents Network Interface Card NIC A circuit board installed into a piece of computing equipment for example a computer that enables you to connect it to the network A NIC is also known as an adapter or adapter card Protocol A set of rules for communication between devices on a network The rules dictate format timing sequencing and error control PPP...

Page 94: ... a single logical LAN that comprises of several LAN segments Switches are similar to bridges in that they connect LANs of a different type however they connect more LANs than a bridge and are generally more sophisticated TCP IP Transmission 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 st...

Page 95: ...quivalent Privacy A shared key encryption mechanism for wireless networking Encryption strength is 40 64 bit or 128 bit Wi Fi 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 Wireless LAN Servic...

Page 96: ...96 GLOSSARY ...

Page 97: ...rgotten Password 70 I Internet addresses 75 IP Address 37 75 L LED 14 N Network addresses 75 Networking wireless 71 NIC wireless 14 P Password 27 PPPoE 26 30 31 R Reset to Factory Defaults 70 S Safety Information 17 Setup Wizard 27 Specifications technical 79 Static Addressing 77 Subnet Mask 75 Summary 34 T TCP IP 23 25 75 Technical specifications 79 standards 79 W Web Proxy 26 Wireless LED 15 net...

Page 98: ...98 INDEX ...

Page 99: ...nt of Communications Equipment Standards entitled Digital Apparatus ICES 003 These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio Channels Country 1 13 Australia Austria Bahrain Belarus Belgium Chile China Costa Rica Croatia Cyprus Czech Republic Denmark Finland France Germany Greec...

Page 100: ...uipment into a different outlet so that equipment and receiver are on different branch circuits Consult the dealer or an experienced radio television technician for help The user may find the following booklet prepared by the Federal Communications Commission helpful How to Identify and Resolve Radio TV Interference Problems This booklet is available from the U S Government Printing Office Washing...

Page 101: ...t Europe This product complies with the European Low Voltage Directive 73 23 EEC EMC Directive 89 336 EEC as amended by European Directive 93 68 EEC and the Radio and Telecommunications Terminal Equipment Directive 99 5 EC FCC CAUTION To assure continued compliance any changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate...

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Page 104: ...ts and services visit our World Wide Web site at www 3com com All specifications are subject to change without notice Copyright 2003 3Com Corporation All rights reserved 3Com and are registered trademarks of 3Com Corporation All other company and product names may be trademarks of their respective companies DUA0055 4AAA01 Rev 01 ...

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3Com 3CRADSL72, User Manual

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Summary of Contents for 3CRADSL72

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