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DSL-2540T ADSL Router User Guide

44

DNS

The Router can be configured to relay DNS settings from your ISP or another available service to workstations on your
LAN. When using DNS relay, the Router will accept DNS requests from hosts on the LAN and forward them to the
ISP’s, or alternative DNS servers. DNS relay can use auto discovery or the DNS IP address can be manually entered by
the user. Alternatively, you may also disable the DNS relay and configure hosts on your LAN to use DNS servers
directly. Most users who are using the Router for DHCP service on the LAN and are using DNS servers on the ISP’s
network, will leave DNS relay enabled (either auto discovery or user configured).

DNS Configuration window

In the DNS Relay Selection pull-down menu, choose to

Use Auto Discovered DNS Server Only

,

Use User Discovered

DNS ServerOnly

or

Disable

DNS Relay

.

If you have not been given specific DNS server IP addresses or if the Router is not pre-configured with DNS server
information, select the

Use Auto Discovered DNS ServerOnly

option. Auto discovery DNS instructs the Router to

automatically obtain the DNS IP address from the ISP through DHCP. If your WAN connection uses a Static IP address,
auto discovery for DNS cannot be used.

If you have DNS IP addresses provided by your ISP, enter these IP addresses in the available entry fields for the

Preferred DNS Server

and the

Alternative DNS Server

.

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Summary of Contents for DSL-2540T

Page 1: ...DSL 2540T ADSLRouter UserGuide July 2006 ESL2540TEUA1G ...

Page 2: ...n Router 5 Factory Reset Button 5 Network Connections 6 BASIC ROUTER CONFIGURATION 7 Computer IP Settings 7 Access the Configuration Manager 8 Login to Home Page 8 Configure the Router 9 Wizard 10 WAN 18 PPPoE PPPoA 18 Bridge Mode 24 Dynamic IP Address 27 Static IP Address 32 LAN 40 DHCP 41 DNS 44 Dynamic DNS 45 Save Settings and Reboot 47 Multiple Virtual Connections 48 ADVANCED ROUTER MANAGEMENT...

Page 3: ...ings To Local Hard Drive 84 Load Settings From Local Hard Drive 85 Save Settings and Reboot the System 85 Restore To Factory Default Settings 85 Firmware 86 Miscellaneous 87 Ping Test 87 Connections 87 Test 88 STATUS 89 Device Info 89 DHCP Clients 90 Log 91 Statistics 92 ADSL 93 HELP 94 TECHNICAL SPECIFICATIONS 95 CONFIGURING IP SETTINGS ON YOUR COMPUTER 97 LOW PASS FILTERS FOR DSL 103 ...

Page 4: ...l the hardware that is connect the cables Ethernet and telephone to the device and connect the power adapter 3 Check the IP settings on your computer and 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 Setup Wizard Many users will be able to...

Page 5: ... configuration management software The program is designed to work best with more recently released browsers of Microsoft Internet Explorer version 6 0 and Netscape Navigator version 6 2 3 or later versions The web browser must have JavaScript enabled JavaScript is enabled by default on many browsers Make sure JavaScript has not been disabled by other software such as virus protection or web user ...

Page 6: ...oA Dynamic IP Address 1483 Bridged IP LLC or 1483 Bridged IP VC Mux Default PPPoE PPPoA PPPoE LLC VPI Most users will not be required to change this setting The Virtual Path Identifier VPI is used in conjunction with the Virtual Channel Identifier VCI to identify the data path between your ADSL service provider s network and your computer If you are setting up the Router for multiple virtual conne...

Page 7: ... DSL 2540T This is the subnet mask used by the DSL 2540T and will be used throughout your LAN The default subnet mask is 255 255 255 0 This can be changed later Information you will need about your LAN or computer Ethernet NIC If your computer has an Ethernet NIC you can connect the DSL 2540T to this Ethernet port using an Ethernet cable You can also use the Ethernet ports on the DSL 2540T to conn...

Page 8: ...ernet using a single Wide Area Network WAN interface and single global IP address 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 ADSL Asymmetric Digital Subscriber Line ADSL is a broadband network technology that utilizes standard twisted pair copper wire te...

Page 9: ...ting 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 a server or outside your network to an ISP defined default gateway for instance Default Routing...

Page 10: ...rk 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 device should be rebooted ADSL Link Act Steady green light indicates a valid ADSL connection This will light after the ADSL negotiation process has been settled A blinking green light in...

Page 11: ... the ADSL port and then connect the cable to your telephone line 2 Insert one end of the Ethernet cable into one of the LAN ports on the back panel of the Router and the other end of the cable to an Ethernet Adapter or available Ethernet port on your computer ADSL Port Use the ADSL cable to connect to the your telephone line RJ 11 port Ethernet Ports Use the Ethernet ports to connect the Router to...

Page 12: ...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 the Route...

Page 13: ...evice through the 10BASE TX Ethernet port on the rear panel Any connection 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...

Page 14: ...nt so it can automatically obtain IP settings from the Router Some operating systems will automatically select the best IP settings Consult the user manual for the operating system OS if you are unsure 2 Configure the Internet WAN Connection Most users will be able to complete this process using the Setup Wizard The Setup Wizard can be launched once you have successfully connected with the Router ...

Page 15: ...hese settings will not apply to dial up or VPN connections 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 Login to Home Page To use the web based management software launch a suitable web browser and direct it to the IP address of the Rout...

Page 16: ...d management interface pictured in the above example The configuration windows are accessed by clicking on the directory tabs Home Advanced Tools Status and Help Each tab has associated window buttons in the left hand panel of the web interface Basic setup of the Router can be completed in the windows accessed from the Home directory including Setup Wizard WAN Internet LAN to configure the IP addr...

Page 17: ...tton to proceed You may stop using the Setup Wizard at any time by clicking the Exit button If you exit the wizard you will return to the Setup Wizard window without saving any of the settings changed during the process The first pop up window of the Setup Wizard lists the basic steps in the process These steps are as follows 1 Set the system time 2 Configure the connection to the Internet 3 Save ...

Page 18: ... the Setup Wizard Choose Time Zone Choose the time zone you are in from the pull down menu and click Next This sets the system time used for the Router If you wish to return to the previous window during the setup process click the Back button ...

Page 19: ...e connection types available for Multi User Mode are PPPoE PPPoA Dynamic IP Address Static IP Address and Bridge Mode Each connection type has different settings that are configured in the next Setup Wizard window Select the Connection Type specific to your service and click Next to go to the next Setup Wizard window Follow the instructions below for the type of connection you have selected ...

Page 20: ...om the drop down menu The available PPP connection and encapsulation types are PPPoE LLC PPPoA LLC and PPPoA VC Mux 3 If you are instructed to change the VPI or VCI number type in the correct setting in the available entry fields Most users will not need to change these settings The Internet connection cannot function if these values are incorrect 4 Click Next to go to the next window and complete...

Page 21: ...if these values are incorrect 3 You may want to copy the MAC address of your Ethernet adapter to the Router Some ISPs record the unique MAC address of your computer s Ethernet adapter when you first access their network This can prevent the Router which has a different MAC address from being allowed access to the ISPs network and the Internet To clone the MAC address of your computer s Ethernet ad...

Page 22: ...ed IP LLC 1483 Routed IP VC Mux and IPoA 2 Change the IP Address Subnet Mask ISP Gateway Address Primary DNS Address and Secondary DNS Server IP Address as instructed by your ISP 3 If you are instructed to change the VPI or VCI number type in the correct setting in the available entry fields Most users will not need to change these settings The Internet connection cannot function if these values a...

Page 23: ...ction and encapsulation types are 1483 Bridged IP LLC and 1483 Bridged IP VC Mux 2 If you are instructed to change the VPI or VCI number type in the correct setting in the available entry fields Most users will not need to change these settings The Internet connection cannot function if these values are incorrect 3 Click Next to go to the next window and complete the Setup Wizard ...

Page 24: ... correctly click the Restart button to save the new configuration settings and restart the Router If you need to change settings from a previous window click the Back button Do not turn the Router off while it is restarting After the Router is finished restarting you are now ready to continue to configure the Router as desired You may want to test the WAN connection by accessing the Internet with ...

Page 25: ... settings directly from the Home directory To access the WAN Settings window click on the WAN link button on the left side of the first window that appears when you successfully access the web manager PPPoE PPPoA Follow the instructions below to configure the Router to use a PPPoE or PPPoA for the Internet connection Make sure you have all the necessary information before you configure the WAN con...

Page 26: ...DSL 2540T ADSL Router User Guide 19 WAN Settings window PPPoE PPPoA ...

Page 27: ...as the default route to the Internet for your LAN Whenever a computer on the LAN attempts to access the Internet the Router becomes the Internet gateway to the computer If you have an alternative route for Internet traffic you may disable this without effecting the Router s connection 9 Enable PPPoE PassThrough if you want the Router to allow a dial up or separate bridged PPP connection to an indi...

Page 28: ...Virtual Path Identifier is used with the VCI to define a dedicated circuit on the ATM network portion of the connection to the Internet and WAN Most users will not need to change this setting VCI The Virtual Channel Identifier is used with the VPI to define a dedicated circuit on the ATM network portion of the connection to the Internet and WAN Most users will not need to change this setting Virtu...

Page 29: ...ance the Router will serve as a bridge NAT Network Address Translation may be enabled or disabled with the pull down menu Keep in mind that disabling NAT allows only a single computer to be used for Internet access through the Router NAT is enabled and disabled for the Router on all connections i e Pvc0 Pvc7 if your Router is set up for multiple virtual connections Firewall Use this to universally...

Page 30: ...ay be desirable to specify the PCR CBR Constant Bit Rate usually used in circumstances where very low packet loss and very low Cell Delay Variable CDV are desirable VBR Variable Bit Rate usually used when network traffic is characterized by bursts of packets at variable intervals and some moderate packet loss and delay is acceptable This category is typically used for audio and video applications ...

Page 31: ...w For Bridged connections it will be necessary for most users to install additional software on any computer that will the Router for Internet access The additional software is used for the purpose of identifying and verifying your account and then granting Internet access to the computer requesting the connection The connection software requires the user to enter the User Name and Password for th...

Page 32: ...e saved and the Router must be restarted for the settings to go into effect To save and reboot the Router click on the Tools directory tab and then click the System button In the System Settings window click the Save and Reboot button under Save Settings and Reboot the System 7 Click OK when the following Save and restart dialog box opens 8 The Router will save the new settings and restart Upon re...

Page 33: ...e defined UBR Unspecified Bit Rate this is the default category used for general purpose Internet traffic where normal levels of packet loss and delay are acceptable For some applications or for multiple connection accounts it may be desirable to specify the PCR CBR Constant Bit Rate usually used in circumstances where very low packet loss and very low Cell Delay Variable CDV are desirable VBR Var...

Page 34: ...ddresses 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 To configure a Dynamic IP Address connection perform the steps listed below Some of the settings do not need to be changed the first time the device is set up but can be changed later if you choose See the table below f...

Page 35: ...DSL 2540T ADSL Router User Guide 28 WAN Settings window Dynamic IP Address ...

Page 36: ...on to an individual PC 7 NAT should remain Enabled If you disable NAT you will not be able to use more than one computer for Internet connections NAT is enabled and disabled system wide therefore if you are using multiple virtual connections NAT will disabled on all connections 8 The Firewall should remain enabled for most users If you choose to disable this you will not be able to use the feature...

Page 37: ...e are 1483 Bridged IP LLC or 1483 Bridged IP VC Mux Cloned MAC Address This is not always necessary but may be required for some ISPs Type in the MAC address of your computer s Ethernet adapter in the Cloned MAC Address field and click the Clone MAC Address button This will copy the information to a file used by the Router to present to the ISP s server used for DHCP Some ISPs record the unique MA...

Page 38: ...d type in the PCR value in the entry field below For the VBR service category an additional parameter SCR must also be defined UBR Unspecified Bit Rate this is the default category used for general purpose Internet traffic where normal levels of packet loss and delay are acceptable For some applications or for multiple connection accounts it may be desirable to specify the PCR CBR Constant Bit Rat...

Page 39: ...need to configure DNS server IP settings in the DNS Configuration window see below Follow the instruction below to configure the Router to use Static IP Address assignment for the WAN connection To configure a Static IP Address connection perform the steps listed below Some of the settings do not need to be changed the first time the device is set up but can be changed later if you choose See the ...

Page 40: ...DSL 2540T ADSL Router User Guide 33 WAN Settings window Static IP ...

Page 41: ... have specific reasons to change this see table below 6 Enable PPPoE PassThrough if you want the Router to allow a dial up or separate bridged PPP connection to an individual PC 7 NAT should remain Enabled If you disable NAT you will not be able to use more than one computer for Internet connections NAT is enabled and disabled system wide therefore if you are using multiple virtual connections NAT...

Page 42: ...ual global IP address used for a web server Usually this will be a server owned by the ISP Get this IP address from your ISP Secondary DNS Address This is the second choice for a DNS server Get this IP address from your ISP MTU The Maximum Transmission Unit size may be changed if you want to optimize efficiency for uploading data through the WAN interface The default setting 1400 bytes should be s...

Page 43: ...e normal levels of packet loss and delay are acceptable For some applications or for multiple connection accounts it may be desirable to specify the PCR CBR Constant Bit Rate usually used in circumstances where very low packet loss and very low Cell Delay Variable CDV are desirable VBR Variable Bit Rate usually used when network traffic is characterized by bursts of packets at variable intervals a...

Page 44: ... possible for your account Your ISP may not support the class of service you want to use To adjust ATM QoS parameters select one of the Service Categories listed here and type in the PCR value in the entry field below For the VBR service category an additional parameter SCR must also be defined UBR Unspecified Bit Rate this is the default category used for general purpose Internet traffic where no...

Page 45: ...elay Variation Tolerance CDVT is a measure of the cell clumping phenomenon by which cells are delayed in the network and are clumped together and arrive at a system at a faster rate than negotiated Increasing the CDVT creates greater bucket depth MBS Maximum Burst Size The MBS is the maximum number of bytes that can be sent continuously from the source to the destination dropping any packets Some ...

Page 46: ... Pvc7 you want to configure Since most users will use only a single connection the default setting Pvc0 can be used for any changes made to the WAN settings VPI The Virtual Path Identifier is used with the VCI to define a dedicated circuit on the ATM network portion of the connection to the Internet and WAN Most users will not need to change this setting VCI The Virtual Channel Identifier is used ...

Page 47: ...ol used for DHCP must be compatible with the IP address of the Router The IP addresses available in the DHCP IP address pool will change automatically if you change the IP address of the Router See the next section for information on DHCP setup To access the Management IP window click the LAN button in the Home directory Management IP window To change the LAN IP Address or Subnet Mask type in the ...

Page 48: ...ically obtain IP settings that are connected to the Router though the Ethernet port When the Router is used for DHCP it becomes the default gateway for DHCP client connected to it Keep in mind that if you change the IP address of the Router the range of IP addresses in the pool used for DHCP on the LAN will also be changed The IP address pool can be up to 253 IP addresses DHCP Settings window ...

Page 49: ...gs as you want them click the Apply button to commit the new settings Use the Router for DHCP To use the built in DHCP server click to select the DHCP Server option if it is not already selected The IP Address Pool settings can be adjusted The Starting IP Address is the lowest available IP address default 192 168 1 2 If you change the IP address of the Router this will change automatically to be 1...

Page 50: ...ot age out type in the MAC Address of the device and its static IP Address in the spaces provided Use the format 00 00 00 00 00 00 for the MAC address and the standard format 192 168 0 xxx for the IP address A Static DHCP Client List will appear below the DHCP Client list with any clients that have been configured for static IP address assignment Note To manually configure IP settings on Windows w...

Page 51: ...e ISP s network will leave DNS relay enabled either auto discovery or user configured DNS Configuration window In the DNS Relay Selection pull down menu choose to Use Auto Discovered DNS Server Only Use User Discovered DNS ServerOnly or Disable DNS Relay If you have not been given specific DNS server IP addresses or if the Router is not pre configured with DNS server information select the Use Aut...

Page 52: ...S service allows a dynamic public IP address to be associated with a static host name in any of the many domains allowing access to a specified host from various locations on the Internet This is enabled to allow remote access to a host by clicking a hyperlinked URL in the form hostname dyndns org Many ISPs assign public IP addresses using DHCP this can make it difficult to locate a specific host ...

Page 53: ...d DDNS information and click Apply to set this information in the Router ATM VC Parameters Description DDNS Server Select one of the DDNS registration organizations form those listed in the pull down menu Available servers include DynDns org and No IP com Username or Key Enter the username given to you by your DDNS server Password or Key Enter the password or key given to you by your DDNS server H...

Page 54: ...ation settings click the Tools tab You will be presented first with the Administrator Settings window This window is described in the next chapter To save the current configuration click the System button to view the System Settings window pictured here System Settings window To save the settings you have configured click the Save and Reboot button under Save Settings and Reboot the System ...

Page 55: ...rough your telecommunications services provider Extended LAN operations employing multiple virtual connections require ADSL routers or modems at the remote site for a successful connection Contact your ISP or telecommunications service provider if you are interested in setting up multiple virtual connections After the necessary arrangements have been made to use the Router with multiple virtual co...

Page 56: ...to configure from the pull down menu 2 Enter the values for the VPI and VCI given to you by your service provider 3 To activate the VC select Enabled from the Virtual Circuit pull down menu 4 Configure the WAN Settings and Connection Type as desired 5 To save the new settings click the Save and Reboot button Tools System The new connection will activate upon restarting In the example below a new P...

Page 57: ... ADSL Configuration ATM VC Setting and QoS Configuration windows This chapter introduces and describes the management features that have not been presented in the previous chapter These include the more advanced features used for network management and security as well as administrative tools to manage the Router view statistics and other information used to examine performance and for troubleshoo...

Page 58: ...ions and services provided by the Router UPnP UPnP supports zero configuration networking and automatic discovery for many types of networked devices When enabled it allows other devices that support UPnP to dynamically join a network obtain an IP address convey its capabilities and learn about the presence and capabilities of other devices DHCP and DNS service can also be used if available on the...

Page 59: ...ember that the specified Private IP Address must be within the useable range of the subnet occupied by the Router UDP TCP port redirection is used to direct inbound traffic to the specified servers or workstations on your private network Port redirection can also be used to direct potentially hazardous packets to a proxy server outside your firewall For example you can configure the Router to dire...

Page 60: ...e table here Category Available Rules Games Alien vs Predator Asheron s Call Dark Rein 2 Delta Force Doom Dune 2000 DirectX 7 8 Games EliteForce EverQuest Fighter Ace II Half Life Heretic II Hexen II Kali Motorhead MSN Gaming Zone Myth The Fallen Lords Need for Speed Porsche Need for Speed 3 Outlaws Rainbow 6 Rogue Spear Starcraft Tiberian Sun Ultima Unreal Tournament Quake 3 Server Quake 2 Server...

Page 61: ... 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 use an applied rule for multiple IP addresses on the LAN Custom Forwarding Rules The User category for port forwarding is used to set up customized port forwarding rules To set up custom TCP or UDP port forwarding rules follow these steps 1...

Page 62: ...DSL 2540T ADSL Router User Guide 55 Click the Apply button to create the new rule The new rule will appear listed in the table of custom port forwarding rules ...

Page 63: ...resses will only be listed if DHCP is enabled on the Router LAN Clients window 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 1 0 0 1 to 223 255 255 254 Any addresses added will appear in the list of Static Addresses available for...

Page 64: ... Management window Configure these parameters for SNMP on the Router SNMP Category Parameters SNMP Management This is used to enable or disable SNMP Agent and SNMP Traps or edit client SNMP Name Location and Contact Enable SNMP Agent Click to select enable or disable SNMP Agent Enable SNMP Traps Click to select enable or disable SNMP Traps ...

Page 65: ...y or ReadWrite Traps The management agent can send an event notification to the management system to identify the occurrence of conditions such as threshold that exceeds a predetermined value Destination IP Insert destination IP address to launch trap message Trap Community Insert Trap Community name Trap Version Drop down menu allows you to select SNMP v1 or SNMP v2c ...

Page 66: ...ound Filter List at the bottom of the window The table below describes the various parameters that are configured for the filter rules Filters window To modify any previously created filter rule click on the note pad icon in the right hand column of the Filter List for the set you want to configure Adjust the settings as desired and click the Apply button to put the new settings into effect First ...

Page 67: ... or all LAN IP addresses depending on which type of rule Inbound or Outbound is being configured Destination IP Where the Destination IP address resides also depends on if you are configuring an Inbound or Outbound filter rule You can opt to indicate a Single IP an IP Range or Any IP from the pull down menu Source Port The Source Port is the TCP UDP port on either the LAN or WAN depending on if yo...

Page 68: ...rules without loosing the rules that have been configured Bridge Filters window To add a bridge filter rule check Enable Bridge Filters type in a Source MAC a Destination MAC or both in the entry fields you may opt to limit filtering to only the Ethernet and click the Apply button To remove a bridge filter from the table in the bottom half of the window click the corresponding trashcan icon Rememb...

Page 69: ...tton and type in the Gateway s IP address Click Apply to enter the new static route in the table below The route becomes active immediately upon creation To add a static route to a specific destination IP on the WAN click the Connection radio button and choose a connection from the pull down menu then enter a Destination IP address and Netmask Click Apply to enter the new static route in the table...

Page 70: ...d to various types of security risks If you use the DMZ take measures such as client based virus protection to protect the remaining client PCs on your LAN from possible contamination through the DMZ DMZ window To designate a DMZ IP address select the Enabled radio button type in the IP Address of the server or device on your LAN and click the Apply button To remove DMZ status from the designated ...

Page 71: ... Configuration window allows the Router to enforce specific predefined policies intended to protect against certain common types of attacks There are two general types of protection DoS Port Scan that can be enabled on the Router as well as filtering for specific packet types sometimes used by hackers You can choose to enable or disable protection against a customized basket of attack and scan typ...

Page 72: ...vent a particular individual from accessing a service or attempts to disrupt service to a specific system or person Port scan protection is designed to block attempts to discover vulnerable ports or services that might be exploited in an attack from the WAN The Service Filtering options allow you to block FTP Telnet response Pings etc from the external network Check the category you want to block ...

Page 73: ...down menu select the Protocol RIPv1 and RIPv1 Compatible and Direction In Out or Both and click Apply The RIPv1 Compatible option will transmit RIPv2 broadcast packets and receive both RIP v1 and RIP v2 packets The direction configuration refers to the RIP request Select In to allow RIP requests from other devices Select Out to instruct the Router to make RIP requests for routing tables from other...

Page 74: ...DSL 2540T ADSL Router User Guide 67 PPP PPP window This window allows you to view PPP configuration information ...

Page 75: ...otocols For most ADSL accounts the default settings ADSL2 Multi mode will work This configuration works with all ADSL implementations If you have been given instructions to change the Modulation method used select the desired option from the Modulation Type drop down menu and click the Apply button ADSL Configuration window ...

Page 76: ...you are using multiple PVCs you can change the configuration of any PVC in this window To create new or additional PVCs read the section on Multiple PVCs on page 48 This window can be used as an alternative to configure the same settings found on the WAN Settings window in the Home directory ATM VC Setting window ...

Page 77: ...tion set click the corresponding notepad icon in the right hand column of the ATM VCs List The PVCs current settings appear above in the entry fields of the ATM VC Setting window Configure the appropriate settings and click the Apply button to put the new settings into effect ...

Page 78: ... lowest The IGMP Proxy Snooping is Disabled by default This setting will not allow IGMP Internet Group Management Protocol packets to be forwarded to the LAN IGMP is used to manage multicasting on TCP IP networks most users will not need to enable this Some ISPs use IGMP to perform remote configuration for client devices such as the Router If you are unsure check with your ISP To enable IGMP servi...

Page 79: ...DSL 2540T ADSL Router User Guide 72 QoS Configuration window ...

Page 80: ...configuration QoS Configuration window for Port Mapping QoS The Router can also be configured to use the QoS infomation contained in the header of IP packets This will open the following window To set IP QoS for the router first click the IP QoS check box in the middle of the window Then select the PVC to associate with the corresponding action and choose a maximum bandwidth and classification for...

Page 81: ...ion QoS Configuration window IP QoS If you select Disable in the Classified by drop down menu you can assign a maximum allowed bandwidth of between 64 kbps and Auto to each of the PVCs configured on the router Additional options become available when you select either ToS Application or User Define from the Classified by drop down menu Selecting ToS will display the following window ...

Page 82: ... are mapped For example if you assign 100 and a range of 0 to 7 to priority level 1 then the remaining priority levels 2 to 4 will only forward packets when priority level 1 is empty when there are no packets to forward Some experimentation may be necessary to achieve the optimum results with your particular ISP s connection If you select Application from the Classified by drop down menu the follo...

Page 83: ...t the mechanism by which the four priority queues are emptied by assigning a weight in percentage terms to each priority queue and then assigning a packet type that can be associated with an application type For example if you assign a weight of 100 to Priority 1 with an application type of Voice then the other 3 ...

Page 84: ... assign a weight on a percentage basis to each of the four priority queues In addition you can specify the number of bytes from the beginning of a given packet s IP header to set a pointer From this pointer you can then specify a Value in hexadecimal and a Mask in hexadecimal for the router to match when examining packets crossing the specified priority queue It is recommended that you not enter a...

Page 85: ...tions located in this directory The Administrator Settings window is the first item in the Tools directory This window is used to change both the admin and the user passwords used to access the web manager This window also allows you to set up a variety of remote management features which are described below ...

Page 86: ...DSL 2540T ADSL Router User Guide 79 Admin Administrator Settings window ...

Page 87: ...e Administrator Settings window Remote Management The Administrator Settings window is also used to enable remote Telnet management remote SSH management and remote web management access to the Router In each case the procedure to enable remote management of the Router is the same First select the State Enabled radio button for Remote Web Management Remote Telnet Management or Remote SSH Managemen...

Page 88: ... SNTP Time window default To configure system time on the Router select the method used to maintain time The options available include SNTP using your computer s system clock default or set the time and date manually If you select the Automatic Simple Network Time Protocol option the window above will change to the following ...

Page 89: ...User Guide 82 Time window for SNTP To use SNTP you must select the Time Zone from the drop down menu enable or disable Daylight Saving and enter the SNTP server URL or IP address Click the Apply button to set the system time ...

Page 90: ...ce Panic 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 A...

Page 91: ... up the configuration file to your computer To save the current configuration settings to your computer click the System button in the Tools directory to display the System Settings window Click the Save button to Save Settings to Local Hard Drive You will be prompted to select a location on your computer to put the file The file type is xml HTML and may be named anything you wish ...

Page 92: ...begin operating with the configuration settings that have just been loaded Save Settings and Reboot the System To save and reboot the Router click the Save and Reboot button under Save Settings and Reboot the System You will be prompted to confirm your decision Restore To Factory Default Settings To reset the Router to its factory default settings click the Restore button You will be prompted to c...

Page 93: ...e latest firmware for the device Note that the device configuration settings may return to the factory default settings so make sure you save the configuration settings with the System Settings window described above Firmware Upgrade window To upgrade firmware type in the name and path of the file or click on the Browse button to search for the file Click the Apply button to begin copying the file...

Page 94: ...address you want to check in the space provided and click the Ping button Read the Ping test result in the space immediately below Click Apply to let your changes take effect Connections IGMP Proxy can be enabled for a user specified PVC by selecting an entry on the drop down menu and clicking the Enabled radio button Click Apply to let your changes take effect ...

Page 95: ... Router A Ping test may be done through the local or external interface to test connectivity to known IP addresses The diagnostics feature executes a series of test of your system software and hardware connections Use this window when working with your ISP to troubleshoot problems Diagnostic Test window ...

Page 96: ...windows to view system information and monitor performance Device Info Use the Device Information window to quickly view basic current information about the LAN and WAN interfaces and device information including Firmware Version and MAC address Device Information window ...

Page 97: ...DSL 2540T ADSL Router User Guide 90 DHCP Clients DHCP Clients window ...

Page 98: ... event log data Use the navigation buttons to view or scroll log pages You may also save a simple text file containing the log to your computer Click the Save Log button and follow the prompts to save the file View Log window Click Clear Log to delete the current log information ...

Page 99: ...he Traffic Statistics window to monitor traffic on the Ethernet or ADSL connection Select the interface for which you want to view packet statistics and the information will appear below Traffic Statistics window Click Refresh to view traffic information ...

Page 100: ...DSL 2540T ADSL Router User Guide 93 ADSL Use the ADSL Status window for troubleshooting the ADSL connection ADSL Status information ...

Page 101: ... Router User Guide 94 Help The Help tab will give basic information referring to various windows located in the Router To view a specific section click on its hyperlinked name A new window of information will appear ...

Page 102: ...psulation over ATM Adaptation Layer 5 AAL5 RFC1577 Classical IP over ATM RFC1661 Point to Point Protocol RFC1994 CHAP RFC2131 DHCP Client DHCP Server RFC2364 PPP over ATM RFC2516 PPP over Ethernet Data Transfer Rate G dmt full rate downstream up to 8 Mbps upstream up to 1 Mbps G lite ADSL downstream up to 1 5 Mbps upstream up to 512 Kbps G dmt bis full rate downstream up to 12 Mbps upstream up to ...

Page 103: ...C 1200mA Power Consumption 12 Watts max Operating Temperature 0 to 40 C Storage Temperature 20 to 70 C Humidity 5 to 95 non condensing Dimensions 109 mm x 142 8 mm x 32 1 mm Weight 200 gm EMI CE Class B FCC Class B Part 15 Safety CSA 950 UL 1950 IEC 60950 EN 60950 Reliability Mean Time Between Failure MTBF min 4 years ...

Page 104: ...f it is not instructions are provided for installing it Once the protocol has been installed you can configure the system to receive IP settings from the Router For computers running non Windows operating systems follow the instructions for your OS that configure the system to receive an IP address from the Router that is configure the system to be a DHCP client Note If you are using this Router t...

Page 105: ...k and Internet Connections window click Network Connections 4 In the Network Connections window right click on Local Area Connection then click Properties Right click on the Local Area Connection icon and select the Properties option from the pull down menu Click Network Connections Click Network and Internet Connections ...

Page 106: ...connection uses the following items by clicking on it once Click on the Properties button 6 Select Obtain an IP address automatically by clicking once in the circle Click the OK button Your computer is now ready to use the Router s DHCP server Click Properties Select Obtain an IP address automatically in the Internet Protocol TCP IP Properties window ...

Page 107: ...omponent 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 computer with the new settings Configure Windows 2000 for DHCP 1 In the Control P...

Page 108: ... changes You will be prompted to restart Windows 7 Click Yes When it has restarted your computer is ready to use the Router s DHCP server Windows ME First check for the IP protocol and if necessary install it 1 In the Windows task bar click the Start button point to Settings and then click Control Panel 2 Double click the Network and Dial up Connections icon 3 In the Network and Dial up Connection...

Page 109: ...ocol dialog box select TCP IP and then click OK You may be prompted to install files from your Windows NT installation CD or other media Follow the instructions to install the files 7 After all files are installed a window displays to inform you that a TCP IP service called DHCP can be set up to dynamically assign IP information 8 Click Yes to continue and then click OK if prompted to restart your...

Page 110: ...o basic styles of low pass filters commonly used are described below In Line Filter In line low pass filters are used for each telephone or telephone device answering machines Faxes etc that shares the line with the ADSL service These devices are attached to the telephone cable between the telephone and wall jack Filters that install behind the wall plate hidden from view are also available A typi...

Page 111: ...ows Line This port connects to the wall jack ADSL This port connects to the Router Phone This port connects to a telephone or other telephone device The diagram below illustrates the proper use of this style of filter Make certain the lines are properly connected If you are unable to hear a dial tone with the telephone check the connections to make sure they are securely attached and connected to ...

Page 112: ...els Belgium TEL 32 0 2 517 7111 FAX 32 0 2 517 6500 URL www dlink be Poland Budynek Aurum ul Walic w 11 PL 00 851 Warszawa Poland TEL 48 0 22 583 92 75 FAX 48 0 22 583 92 76 URL www dlink pl Hungary R k czi t 70 72 HU 1074 Budapest Hungary TEL 36 0 1 461 30 00 FAX 36 0 1 461 30 09 URL www dlink hu Singapore 1 International Business Park 03 12 The Synergy Singapore 609917 TEL 65 6774 6233 FAX 65 67...

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