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D-Link DSL-502T, User Manual

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DSL-502T ADSL Router User’s Guide

 

 

Port Forwarding 

Port Forwarding allows specific functions to bypass NAT protection that would otherwise not allow them to 
function. To use Port Forwarding, you must have specific client IP addresses available for configuration. Use the 
LAN Clients menu to establish client IP addresses available for port forwarding. 

 

 

Note 

In order to use Port Forwarding, Firewall support must be enabled. See Enable/Disable 
NAT and Firewall in the Advanced Security menu. 

 

 

Figure 4-4. Advanced – Port Forwarding window 

There are many different pre-configured rules available for specific functions such as Internet gaming, VPN, 
streaming and interactive multi-media, standard TCP/IP protocols, reserved ports, p2p, network management 
applications, and so on.  

 

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Summary of Contents for DSL-502T

Page 1: ...DSL 502T ADSLRouter User sGuide First Edition February 2004 651DSL502T01 ...

Page 2: ...ance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning equipment off and on the user is encouraged to try to correct the interference by one or more of the followi...

Page 3: ...auftreten ist das Gerät vom Stromnetz zu trennen und von einer qualifizierten Servicestelle zu überprüfen a Netzkabel oder Netzstecker sint beschädigt b Flüssigkeit ist in das Gerät eingedrungen c Das Gerät war Feuchtigkeit ausgesetzt d Wenn das Gerät nicht der Bedienungsanleitung ensprechend funktioniert oder Sie mit Hilfe dieser Anleitung keine Verbesserung erzielen e Das Gerät ist gefallen und ...

Page 4: ...e of the package The package must be mailed or otherwise shipped to D Link with all costs of mailing shipping insurance prepaid D Link shall never be responsible for any software firmware information or memory data of Purchaser contained in stored on or integrated with any product returned to D Link pursuant to this warranty Any package returned to D Link without an RMA number will be rejected and...

Page 5: ...nly to the original licensee and is subject to the terms and conditions of the license granted by D Link for the Software Software will be warranted for the remainder of the original Warranty Period from the date or original retail purchase If a material non conformance is incapable of correction or if D Link determines in its sole discretion that it is not practical to replace the non conforming ...

Page 6: ...IMITED WARRANTY PROVIDED HEREIN THE ENTIRE RISK AS TO THE QUALITY SELECTION AND PERFORMANCE OF THE PRODUCT IS WITH THE PURCHASER OF THE PRODUCT e Limitation of Liability TO THE MAXIMUM EXTENT PERMITTED BY LAW D LINK IS NOT LIABLE UNDER ANY CONTRACT NEGLIGENCE STRICT LIABILITY OR OTHER LEGAL OR EQUITABLE THEORY FOR ANY LOSS OF USE OF THE PRODUCT INCONVENIENCE OR DAMAGES OF ANY CHARACTER WHETHER DIR...

Page 7: ...ter 16 Setup Menu 17 Configure Connection 1 for PPPoA 19 Change the Connection Type 20 Configure Connection 1 for PPPoE 20 Configure Connection 1 for Bridge 21 Configure Connection 1 for Static IP for WAN 23 Configure Connection 1 for DHCP for WAN 24 Configure Connection 1 for CLIP 25 Create a New Connection 26 DHCP Configuration for LAN 29 Enable DHCP Relay 30 Management IP 31 Save Configuration ...

Page 8: ... OAM Test 55 Status Menus 56 Network Statistics 57 Connection Status 58 DHCP Clients 58 Modem Status 59 Product Information 59 System Log 60 Help Menu 60 TECHNICAL SPECIFICATIONS 61 IP ADDRESS SETUP 63 IP CONCEPTS 65 MICROFILTERS AND SPLITTERS 68 ...

Page 9: ...change them if necessary so the computer can access the web based software built into the Router 4 Use the web based management software to configure the device to suit the requirements of your ADSL account Installation Requirements In order to establish a connection to the Internet it will be necessary to provide information to the Router that will be stored in its memory For some users only thei...

Page 10: ...tall software on your computer that enables the computer to access the Internet Additional software must be installed if you are using the device a simple bridge For a bridged connection the information needed to make and maintain the Internet connection is stored on another computer or gateway device not in the Router itself If your ADSL service is delivered through a PPPoE PPPoA or CLIP IPoA con...

Page 11: ...is is the Virtual Path Identifier VPI It is used in conjunction with the Virtual Channel Identifier VCI below to identify the data path between your ADSL service provider s network and your computer VCI This is the Virtual Channel Identifier VCI It is used in conjunction with the VPI above to identify the data path between your ADSL service provider s network and your computer Information you will...

Page 12: ...ers on your LAN The default range of IP addresses the DSL 502T will assign are from 192 168 1 2 to 192 168 1 254 Your computer or computers needs to be configured to Obtain an IP address automatically that is they need to be configured as DHCP clients It is recommended that your collect and record this information here or in some other secure place in case you have to re configure your ADSL connec...

Page 13: ...ion CD ROM into the CD ROM drive 2 Connect the USB cable to the device Within a few seconds you should see the Found New Hardware message window followed shortly after by the opening Found New Hardware Wizard window 3 If you do not see the auto run window pictured above explore the CD and double click the inf file DLink_502t inf 4 Click the Next button xiii ...

Page 14: ...DSL 502T DSL Router User s Guide 5 Click the Next button 6 Check CD ROM drives as shown above if you are using the USB driver included on the CD ROM that came with your Router Click Next xiv ...

Page 15: ... cable if you have not done so Remember that most ADSL installations require a filter to divide the ADSL signal from the Plain Old Telephone signal 9 You can restart your computer now by clicking the Finish button The computer will be able to connect to the Router through the USB port after restarting xv ...

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Page 17: ...r such as NAT Network Address Translator and DHCP Dynamic Host Configuration Protocol improve administration efficiency and improve security for your private network The advanced security enhancements packet filtering and port redirection can help protect your network from potentially devastating intrusions by malicious agents from outside your network What is ADSL Asymmetric Digital Subscriber Li...

Page 18: ...ters Using both versions lets the Router to communicate with all RIP enabled devices Static Routing This allows you to select a data path to a particular network destination that will remain in the routing table and never age out If you wish to define a specific route that will always be used for data traffic from your LAN to a specific destination within your LAN for example to another router or ...

Page 19: ...oint Protocol PPP compliant RFC 1877 Automatic IP assignment compliant RFC 1994 Challenge Handshake Authentication Protocol compliant Supports RFC 2131 and RFC 2132 DHCP functions including automatic assignment of IP address use of subnet mask and default gateway and provision of DNS server address for all hosts RFC 2364 PPP over ATM compliant PPPoA compliant RFC 2516 PPP over Ethernet compliant P...

Page 20: ...rs The ADSL Ethernet and USB indicators monitor link status and activity Link Act Power Steady green light indicates the unit is powered on When the device is powered off this remains dark Status Lights steady green during power on self test POST Once the connection status has been settled the light will blink green If the indicator lights steady green after the POST the system has failed and the ...

Page 21: ... restore the settings to the factory default values see Factory Reset Button in the next chapter for instructions on using the reset button ADSL port connect ADSL cable here Ethernet port connect Ethernet cable here USB port connect USB cable here and install USB driver Factory Reset button Power cord connects here Note The Router may be rebooted by disconnecting and then reconnecting the power 5 ...

Page 22: ...itable nearby power source 2 You should see the Power LED indicator light up and remain lit The Status LED should light solid green and begin to blink after a few seconds 3 If the Ethernet port is connected to a working device check the Ethernet Link Act LED indicators to make sure the connection is valid The Router will attempt to establish the ADSL connection if the ADSL line is connected and th...

Page 23: ...n to an Ethernet concentrating device such as a switch or hub must operate at a speed of 10 100 Mbps only When connecting the Router to any Ethernet device that is capable of operating at speeds higher than 10Mbps be sure that the device has auto negotiation NWay enabled for the connecting port Use standard twisted pair cable with RJ 45 connectors The RJ 45 port on the Router is a crossed port MDI...

Page 24: ...SL Router User s Guide Computer to Router Connection You can connect the Router directly to a 10 100BASE TX Ethernet adapter card NIC installed on a PC using the Ethernet cable provided as shown in this diagram 8 ...

Page 25: ...nnection and connect to the service provider s network There are different methods used to establish the connection to the service provider s network and ultimately to the Internet You should know what Encapsulation and connection type you are required to use for your ADSL service It is also possible that you must change the PVC settings used for the ADSL connection Your service provider should pr...

Page 26: ...he following steps to configure a computer running Windows XP to be a DHCP client 1 From the Start menu on your desktop go to Settings then click on Network Connections 2 In the Network Connections window right click on LAN Local Area Connection then click Properties 10 ...

Page 27: ...er User s Guide 3 In the General tab of the Local Area Connection Properties menu highlight Internet Protocol TCP IP under This connection uses the following items by clicking on it once Click on the Properties button 11 ...

Page 28: ... display as an installed component click Install 6 In the Select Network Component Type dialog box select Protocol and then click Add 7 Select Internet Protocol TCP IP in the Network Protocols list and then click OK 8 You may be prompted to install files from your Windows 2000 installation CD or other media Follow the instructions to install the files 9 If prompted click OK to restart your compute...

Page 29: ...he Network and Dial up Connections window right click the Network icon and then select Properties 3 In the Network Properties dialog box select TCP IP and then click Properties 4 In the TCP IP Settings dialog box click the Obtain and IP address automatically option 5 Double click OK twice to confirm and save your changes and then close the Control Panel Your computer is now ready to use the Router...

Page 30: ...rotocols tab 4 The Protocols tab displays a list of currently installed network protocols If the list includes TCP IP then the protocol has already been enabled Skip to Configure IP Information 5 If TCP IP does not display as an installed component click Add 6 In the Select Network Protocol dialog box select TCP IP and then click OK You may be prompted to install files from your Windows NT install...

Page 31: ...ions icon 3 Click the Connections tab and click on the LAN Settings button 4 Verify that the Use proxy server option is NOT checked If it is checked click in the checked box to deselect the option and click OK Alternatively you can access this Internet Options menu using the Tools pull down menu in Internet Explorer To use the web based management software launch a suitable web browser and direct ...

Page 32: ...figure the Router The first page that appears after you successfully login displays information about the Router and its connection status Tabs across the top of the screen show other available menus Setup Advanced Tools Status and Help Figure 3 2 Home Status Information window When the Router is used to provide Internet access it actually must first access your service provider s network that is ...

Page 33: ...P or network service provider Figure 3 3 Opening Setup window If you are not instructed to change the modulation type click the Connection 1 button or hyperlink to configure the other WAN settings Skip ahead to Configure Connection below to configure a PPPoA connection type To configure other connection types go If you are instructed to change the method of modulation used for ADSL click the Modem...

Page 34: ...pe used unless you have been instructed to do so If this setting is not configured properly the Router will not work Figure 3 4 DSL Setup menu change modulation type If you are instructed by your ISP to change the Modulation type is used for your service select the desired modulation type and then click Apply The modulation types available are T1413 G DMT GLITE and MMODE By default the Router will...

Page 35: ...onnection Setup menu pictured in the example above 2 Type in a Name for the connection or use the default name conn_1_PPPoA_8_35 in the space provided 3 Under Options enable NAT and or Firewall by selecting the corresponding selection box 4 If you are told to change the VPI or VCI values type in the values given to you by your service provider Many users will be able to use the default settings 5 ...

Page 36: ...n using the alternative connection type or you may configure the Connection 1 settings to use the connection type of choice This section describes how to change the Connection 1 settings to use a different connection type To change the Connection 1 settings to use a different connection type follow the instructions below according to the type of connection you want to use To create and configure a...

Page 37: ...most users the remaining settings will not need to be changed See your ISP for further information 9 Click the Apply button when you have entered all the information The web browser will briefly go blank You are now finished changing setting for the primary WAN connection known as Connection 1 It is now necessary to save the changes you just made and restart the Router 10 To save the changes made ...

Page 38: ...d to do so If you are told to change these type in the values given to you by your service provider 7 The Encapsulation values LLC SNAP and VC MUX are two different methods of encapsulating the PPP packet Contact your ISP to make sure which encapsulation is being supported 8 Click the Apply button when you have entered all the information The web browser will briefly go blank You are now finished ...

Page 39: ...uration menu 2 Select Static from the Type pull down menu This action will change the menu so it offers different settings for configuration 3 Type in a Name in the space provided conn_1_Static_8_35 is used in the above example 4 If you are told to change the VPI or VCI values type in the values given to you by your service provider Many users will be able to use the default settings 5 Leave the d...

Page 40: ...Configuration Protocol DHCP allows the gateway to automatically obtain the IP address from a DHCP server on the service provider s network The service provider assigns a global IP address from a pool of addresses available to the service provider Typically the IP address assigned has a long lease time so it will likely be the same address each time the Router requests an IP address Figure 3 9 Setu...

Page 41: ...on to store the configuration settings Click on Back button to return to the System Commands menu 10 Check the WAN connection status Click the Status tab and then the Connection Status button Look under WAN to view the State of Connection 1 it should read Connected If the WAN connection state does not appear to Connected after a few minutes go back to the Connection 1 Setup menu check the settings...

Page 42: ...e to Connection 1 click the Tools tab and then click on the System Commands button Click on the Save All button to store the configuration settings Click on Back button to return to the System Commands menu 11 Check the WAN connection status Click the Status tab and then the Connection Status button Look under WAN to view the State of Connection 1 it should read Connected If the WAN connection sta...

Page 43: ...he new connection Notice that a new menu button is created Connection 2 this links to the configuration menu for Connection 2 see example below If at any time you want to change delete disconnect or connect this WAN connection click on the Connection 2 button and make the changes in the Connection 2 menu 4 Now save the changes you just made Click the Tools tab and then click on the System Commands...

Page 44: ...ction button 2 Select Bridge from the Type menu 3 Configure the remaining settings including VPI and VCI as necessary 4 Click the Apply button Notice that a new menu button Connection 3 appears under WAN Setup 5 Remember to save any newly created connections using the Save All procedure in the Tools System Commands menu Figure 3 12 Setup a New Connection Connection 3 Note To delete any existing co...

Page 45: ...select the Server On option to enable DHCP service from the Router enabled by default and configure DHCP server parameters as follows DHCP Parameter Description Start IP Type in the base address for the IP pool of unassigned IP addresses This IP address must be consistent with the Management IP address of the Router Normally the Start IP address is one greater than the Management IP address End IP...

Page 46: ...orks from their own servers To enable DHCP service form outside your LAN select the DHCP Relay option and type in the server IP address in the Relay IP field Figure 3 14 Configure DHCP Relay Service Click the Apply button to change the DHCP Relay settings Remember to Save All in the Tools System Commands menu 30 ...

Page 47: ...e using DHCP from the Router the IP address must be consistent with the DHCP IP settings Figure 3 15 Configure Management IP Change IP settings as desired and click the Apply button to change the DHCP Relay settings You may also provide a Host name and Domain name if necessary for your LAN Remember to Save All in the Tools System Commands menu 31 ...

Page 48: ...ry or they will be lost if the Router is restarted or powered off When you are finished making changes to the Router settings follow the instructions here to save the new settings Figure 3 16 Router Tools Menus Click on the Tools tab to access the System Commands menu link then click the System Commands link to see the menu pictured below 32 ...

Page 49: ...Save All button It will take a second or two to perform the save After the save is completed a message appears in a new menu see below Figure 3 18 Changes permanently saved message To return to the System Commands menu you can click the Back button in the new menu or use the back function of the web browser 33 ...

Page 50: ...e Advanced tab to access menus used to configure UPnP Port Forwarding Access Control Advanced Security including NAT Firewall and DMZ setup LAN Clients Bridge Filters Multicast pass through Static Routing and Dynamic Routing RIP setup Figure 4 1 Advanced setup main menu 34 ...

Page 51: ... also be used if available on the network UPnP also allows supported devices to leave a network automatically without adverse effects to the device or other devices on the network UPnP can be supported by diverse networking media including Ethernet 802 11b wireless Firewire phoneline and powerline networking Figure 4 2 Advanced UPnP window To enable UPnP for any available connection click to check...

Page 52: ...CP is enabled on the Router Figure 4 3 LAN Clients Setup To add a static IP address to the list of available IP addresses type an IP address that falls within the range a available IP addresses and click on the Add button In the example above available addresses range from 10 0 0 1 to 10 255 255 254 Any addresses added will appear in the list of Static Addresses available for advanced configuratio...

Page 53: ...menu to establish client IP addresses available for port forwarding Note In order to use Port Forwarding Firewall support must be enabled See Enable Disable NAT and Firewall in the Advanced Security menu Figure 4 4 Advanced Port Forwarding window There are many different pre configured rules available for specific functions such as Internet gaming VPN streaming and interactive multi media standard...

Page 54: ... NNTP SMTp POP 2 POP3 IMAP IRC Lotus Remote User Use this to set up custom TCP UDP port rules To configure a new port forwarding rule for any of the pre configured rules follow these steps 1 Select the WAN connection you want to use for the new rule from the Choose a connection pull down menu 2 Select a LAN IP from the available client IP addresses listed in the pull down menu or create a New IP b...

Page 55: ...omized port forwarding rules Figure 4 5 Set up Custom Port Forwarding Rules To set up custom TCP or UDP port forwarding rules follow these steps 1 Select the User category and click the Add button located below the Available Rules list This will change the menu to look like the example below 39 ...

Page 56: ... or a range of ports for forwarding Type the lowest numbered port in the range in the Port Start space Type the highest numbered port in the Port End space For a single port just enter the same number in both spaces 5 Type a number for the Port Map in the space provided This is the local port being forwarded to 6 Click the Apply button to create the new rule The new rule will appear listed in the ...

Page 57: ... a single set of access rules is maintained for each controlled IP address that operates on all WAN connections Note In order to use Port Access Control Firewall support must be enabled See Enable Disable NAT and Firewall in the Advanced Security menu Figure 4 7 Access Control menu Remember if the client IP address you want does not appear listed in the LAN IP pull down menu click on the New IP bu...

Page 58: ...enu see above 2 Select the Category of the rule you are creating The Available Rules for the category appear listed 3 Highlight to select the Available Rule you want to apply 4 Click on the Add button to place the rule in the Applied Rules list of port forwarding that are actively applied to the client The Available Rules can be applied to a single client IP address That is it is not possible to u...

Page 59: ...s Enable Disable NAT and Firewall NAT and basic Firewall protection can be enabled or disabled for any WAN connection These may also be enabled or disabled when configuring the WAN connection for any connection type except Bridge connections By default they are enabled for WAN connections except Bridge connections when they are first set up Firewall protection includes the previously discussed Por...

Page 60: ... improve network efficiency The rules are configured for individual devices based on MAC address Filter rules can be set up for source destination or both You can set up filter rules and disable the entire set of rules without loosing the rules that have been configured Figure 4 9 Bridge Filters menu To add a bridge filter rule check Enable Bridge Filters type in a Source MAC a Destination MAC or ...

Page 61: ...interface IGMP packets are used to control multicasts and discontinue multicasts to individual IP addresses when they are no longer needed Figure 4 10 Multicast pass through menu To enable Multicast pass through for any WAN connection select the connection and click the Enable IGMP Multicast box to select the option then click the Apply button Remember to save the configuration changes 45 ...

Page 62: ...ure 4 11 Static Routing menu To add a static route choose a connection from the pull down menu and then enter a New Destination IP address subnet Mask Gateway IP address and Metric value Click Apply to enter the new static route in the table below The route becomes active immediately upon creation To remove a static route from the table in the bottom half of the window choose to Delete it from the...

Page 63: ...e Dynamic Routing menu to enable RIP and if desired to configure password protection Figure 4 12 Dynamic Routing RIP menu To enable RIP v1 check Enable RIP select RIP v1 Protocol select the Direction In Out or Both and click Apply To enable RIP v2 or RIP v1 Compatible select the appropriate Protocol and Direction and click Apply To use password protection for RIP v2 or RIP v1 Compatible protocols ...

Page 64: ...PPPoE type WAN connections can be disconnected or connected as needed Non PPPoE type connections must be deleted from the configuration settings if you want to disable them To set up additional virtual connections follow the procedure described in Create a New Connection Keep in mind that each new connection must have a VPI VCI value set that is unique to the Router The numbers for these values wi...

Page 65: ...t and reset the Router to set up Remote Log information for User Management to update firmware and load saved configuraiton files in the Update Gateway menu to perform a Ping test and to test the DSL network connectivitiy in the Modem Test menu Figure 4 13 Tools and utility menu links Click the hyperlink or menu button to view the desired menu 49 ...

Page 66: ...hing a link to the WAN Figure 4 14 User Management menu To change the user name and password used for management access to the Router 1 Type the current User Name in the entry field provided 2 Type in the new Password in the entry field provided 3 Type in the new password again in the Confirm Password field 4 If desired change the Idle Timeout value 5 Click Apply 50 ...

Page 67: ... clicking on the Save All button Restart Click the Restart button to restart the Router If you have not saved your changes the Router will revert to the previously saved configuration upon rebooting the Router Restore The DSL 502T can be reset to the default configuration for all settings using the Restore option This will also change the both the LAN and WAN IP address of the device so these will...

Page 68: ... and Warning Type in the IP address of a receiver for the log message in the Add an IP Address field and click on the Add button Log message receivers that are added appear listed in the Select a logging destination pull down menu These may be used at any time for other types of log messages To remove a log message receiver from the list select it and click on the Remove button Click the Apply but...

Page 69: ... Update Gateway button to begin copying the file The file will load and restart automatically Use the Configuration Backup Restore features to store current settings to a file on your computer or to load previously saved configuration files on the device To save the current settings to a configuration file on your computer type in the full name and path in the Select a Configuration file space or ...

Page 70: ...evice first enter the IP address of the device that you wish to Ping into the first field the Packet Size in bytes in the second field and finally enter the number of times you wish the Ping function to attempt a connection to the desired device into the third field Click Test to start the Ping mechanism The results of the Ping will be shown in the result box in the bottom half of the window 54 ...

Page 71: ...ection problems on the WAN interface You can test for connectivity on the service provider s network for any WAN connection Test for F5 or F4 connection on the near segment or end to end Figure 4 19 Tools OAM Test window To test your modem select a Connection choose a Test Type and click Test 55 ...

Page 72: ...SL Router User s Guide Status Menus Use the Status windows to display various performance data about the Router Figure 4 20 Status display links Click the hyperlink or menu button for the desired Status window 56 ...

Page 73: ...L 502T ADSL Router User s Guide Network Statistics Figure 4 21 Network Statistics window Choose the desired interface at the top of the window and then click Refresh to view Ethernet network statistics 57 ...

Page 74: ...er s Guide Connection Status Figure 4 22 Connection Status window Click Refresh to view connection status information DHCP Clients This window displays the status of all current DHCP clients Figure 4 23 DHCP Clients window 58 ...

Page 75: ...tus This window displays DSL statistics and various modem status data Figure 4 24 Modem Status window Product Information This window displays product information including hardware and firmware versions Figure 4 25 Product Information window 59 ...

Page 76: ...og displays chronological event log data Figure 4 26 System Log window Click Refresh to get the most current system log information Help Menu Help menu links provide more information for configuring various Router functions Figure 4 27 Opening Help window 60 ...

Page 77: ...34 PAP RFC 2364 PPP over ATM RFC 1631 NAT RFC 1877 Automatic IP assignment RFC 2516 PPP over Ethernet Supports RFC 2131 and RFC 2132 DHCP Compatible with all T1 413 issue 2 full rate DMT over analog POTS and CO DSLAM equipment Supports ATM Forum UNI V3 1 PVC Protocols TCP IP UDP RIP 1 RIP 2 IGMP DHCP BOOTP ARP AAL5 Data Transfer Rate G dmt full rate Downstream up to 8 Mbps Upstream up to 640 Kbps ...

Page 78: ...0V 240V AC 50 60Hz Output 9V AC 1A Power Consumption 3 Watts max Operating Temperature 5 to 40 C 41 104 F Humidity 5 to 95 non condensing Dimensions 142 W x 117 D x 31 H mm Weight 202 g EMI FCC Class B CE Class B Safety CSA International Reliability Mean Time Between Failure MTBF min 4 years 62 ...

Page 79: ...ss Assignment Manually configuring IP settings for the LAN means you must manually set an IP address subnet mask and IP address of the default gateway the Router s IP address on each networked computer The example listed below describes IP configuration for computers running Windows 95 or Windows 98 Regardless of what operating system is used on each workstation the three network IP settings must ...

Page 80: ...cheme allowed by rules that govern IP assignment It may be more convenient or easier to remember an IP scheme that use a different address for the Router Or you may be installing the Router on a network that has already established the IP settings Changing the IP address is a simple matter and can be done using the web manager If you are incorporating the Router into a LAN with an existing IP stru...

Page 81: ...each of the millions of networks and each of the computers on those networks Such a number is called an IP address To make IP addresses easy to understand the originators of IP adopted a system of representation called dotted decimal or dotted quad notation Below are examples of IP addresses written in this format 201 202 203 204 189 21 241 56 125 87 0 1 Each of the four values in an IP address is...

Page 82: ...the full range of integer values that can be expressed with eight bits The network portion must be the same for all the IP devices on a discrete physical network a single Ethernet LAN for example or a WAN link The host portion must be different for each IP device or to be more precise each IP capable port or interface connected directly to that network The network portion of an IP address will be ...

Page 83: ... Subnet Mask Class A 255 0 0 0 Class B 255 255 0 0 Class C 255 255 255 0 Subnet mask settings other than those listed above add significance to the interpretation of bits in the IP address The bits of the subnet mask correspond directly to the bits of the IP address Any bit an a subnet mask that is to correspond to a net ID bit in the IP address must be set to 1 67 ...

Page 84: ...d to use any type of filter device Follow the instructions given to you by your ADSL service provider about where and how you should connect the Modem to the ADSL line Microfilters Unless you are instructed to use a line splitter see below it will be necessary to install a microfilter low pass filter device for each telephone or telephone device answering machines Faxes etc that share the line wit...

Page 85: ... splitter has three RJ 11 ports used to connect to the wall jack the Modem and if desired a telephone or telephone device The connection ports are typically labeled as follows Line This port connects to the wall jack ADSL This port connects to the Modem Phone This port connects to a telephone or other telephone device The diagram below illustrates the proper use of the splitter ADSL Router Line Sp...

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Page 89: ...4th Floor Merit House Edgware Road Colindale London NW9 5AB United Kingdom TEL 44 020 8731 5555 SALES 44 020 8731 5550 FAX 44 020 8731 5511 SALES 44 020 8731 5551 URL www dlink co uk E MAIL info dlink co uk U S A D Link U S A 17575 Mt Herrmann Fountain Valley CA 92708 TEL 1 714 885 6000 FAX 1 866 743 4905 INFO 1 800 326 1688 URL www dlink com E MAIL tech dlink com support dlink com ...

Page 90: ...99 1000 or more 3 What network protocol s does your organization use XNS IPX TCP IP DECnet Others_______________________________________________________ 4 What network operating system s does your organization use D Link LANsmart Novell NetWare NetWare Lite SCO Unix Xenix PC NFS 3Com 3 Open Banyan Vines DECnet Pathwork Windows NT Windows NTAS Windows 95 Others______________________________________...

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