TD851W 150Mbps Wireless N ADSL2+ Modem Router Rev: 1.0.
COPYRIGHT & TRADEMARKS Specifications are subject to change without notice. is a registered trademark of TP-LINK TECHNOLOGIES CO., LTD. Other brands and product names are trademarks or registered trademarks of their respective holders. No part of the specifications may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adaptation without permission from TP-LINK TECHNOLOGIES CO., LTD. Copyright © 2011 TP-LINK TECHNOLOGIES CO., LTD.
FCC RF Radiation Exposure Statement This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This device and its antenna must not be co-located or operating in conjunction with any other antenna or transmitter. “To comply with FCC RF exposure compliance requirements, this grant is applicable to only Mobile Configurations.
TP-LINK TECHNOLOGIES CO., LTD DECLARATION OF CONFORMITY For the following equipment: Product Description: 150Mbps Wireless N ADSL2+ Modem Router Model No.: TD851W Trademark: TP-LINK We declare under our own responsibility that the above products satisfy all the technical regulations applicable to the product within the scope of Council Directives: Directives 1999/5/EC The above product is in conformity with the following standards or other normative documents ETSI EN 300 328 V1.7.
CONTENTS Package Contents .................................................................................................... 1 Chapter 1. Introduction ......................................................................................... 2 1.1 Product Overview ..................................................................................2 1.2 Main Features .......................................................................................2 1.3 Conventions ................................
4.4.3 SNMP ...................................................................................................... 61 4.4.4 DNS ......................................................................................................... 62 4.4.5 DDNS....................................................................................................... 63 4.5 Firewall ................................................................................................64 4.5.1 MAC Filter ............................
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Package Contents The following contents should be found in your package: ¾ One TD851W 150Mbps Wireless N ADSL2+ Modem Router ¾ One Power Adapter for TD851W 150Mbps Wireless N ADSL2+ Modem Router ¾ Quick Installation Guide ¾ One RJ45 cable ¾ Two RJ11 cables ¾ One ADSL splitter ¾ One Resource CD, which includes this User Guide ) Note: Make sure that the package contains the above items.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Chapter 1. Introduction Thank you for choosing the TD851W 150Mbps Wireless N ADSL2+ Modem Router. 1.1 Product Overview The device is designed to provide a simple and cost-effective ADSL Internet connection for a private Ethernet or IEEE 802.11n/ IEEE 802.11g/ IEEE 802.11b wireless network. The TD851W connects to an Ethernet LAN or computers via standard Ethernet ports.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ RFC-1483/2684 LLC/VC-Mux bridge/route mode ¾ RFC-1577 Classical IP over ATM ¾ RFC-2516 PPPoE ¾ RFC-2364 PPPoA ¾ ITU-T 1.610 F4/F5 OAM send and receive loop-back ¾ 802.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Chapter 2. Hardware Installation 2.1 The Front Panel Figure 2-1 The LEDs locate on the front panel. They indicate the device’s working status. For details, please refer to LED Explanation. LED Explanation Name Power ADSL Status Indication On The modem router is powered on. Off The modem router is off. Please ensure that the power adapter is connected correctly. On ADSL line is synchronized and ready to use.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide WPS Off There is no device connected to this LAN port. On A wireless device has been successfully added to the network by WPS function. Flash WPS handshaking is in process and will continue for about 2 minutes. Please press the WPS button on other wireless devices that you want to add to the network while the LED is flashing.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ POWER: The Power plug is where you will connect the power adapter. ¾ WPS: The switch for the WPS function. For details, please refer to 4.3.3.1 WPS Settings. ¾ LAN: Through the port, you can connect the Router to your PC or the other Ethernet network devices. ¾ RESET: There are two ways to reset the Router's factory defaults. Method one: With the Router powered on, use a pin to press and hold the Reset button for at least 5 seconds.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide • MODEM: Connect to the ADSL port of TD851W Plug one end of the twisted-pair ADSL cable into the ADSL LINE port on the rear panel of TD851W. Connect the other end to the MODEM port of the external splitter. Step 2: Connect the Ethernet cable. Attach one end of a network cable to your computer’s Ethernet port or a regular hub/switch port, and the other end to the LAN port on the TD851W. Step 3: Power on the computers and LAN devices.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Chapter 3. Quick Installation Guide 3.1 Configure PC After you directly connect your PC to the TD851W or connect your adapter to a Hub/Switch which has connected to the Router, you need to configure your PC’s IP address. Follow the steps below to configure it. Step 1: Click the Start menu on your desktop, right click My Network Places, and then select Properties (shown in Figure 3-1).
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 3-2 Step 3: Select General tab, highlight Internet Protocol (TCP/IP), and then click the Properties button.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 3-3 Step 4: Configure the IP address as Figure 3-4 shows. After that, click OK. Figure 3-4 ) Note: You can configure the PC to get an IP address automatically, select “Obtain an IP address automatically” and “Obtain DNS server address automatically” in the screen above. Now, you can run the Ping command in the command prompt to verify the network connection.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 3-5 If the result displayed is similar to the screen shown below, it means that your PC has not connected to the Router. Figure 3-6 You can check it follow the steps below: 1) Is the connection between your PC and the Router correct? The LEDs of LAN port which you link to the device and the LEDs on your PC's adapter should be lit. 2) Is the TCP/IP configuration for your PC correct? If the Router's IP address is 192.168.1.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 3-7 Step 1: Select the Wizard tab and you will see the next screen.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Step 2: Configure the Router with the information provided by your ISP, including VPI/VCI, Connection Mode and the following parameters. Take PPPoE for example, you need to enter Username, Password and DNS parameters. All these information are provided by your ISP. After that, click the next button to continue. Figure 3-9 Step 3: Choose to enable your wireless network or not. If it’s enabled, you need to create a name for your wireless network.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 3-10 Step 4: Click the Apply Changes button to finish the wizard.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Chapter 4. Software Configuration This User Guide recommends using the “Quick Installation Guide” for first-time installation. For advanced users, if you want to know more about this device and make use of its functions adequately, maybe you will get help from this chapter to configure the advanced settings through the Web-based Utility. After your successful login, you can configure and manage the device.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-1 Click the Refresh button to refresh immediately. 4.1.1.2 ADSL Choose “Status→Device Info→ADSL” menu, and you will be able to view the ADSL configuration.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-2 Click the Retrain button to retrain the information again. Click the Refresh button to refresh immediately. 4.1.2 Statistics Choose “Status→Statistics” menu, and you will be able to view the network traffic.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-3 Click the Refresh button to refresh immediately. 4.1.3 Wizard Please refer to " 3.2: Login". 4.2 Setup Choose “Setup”, you can see the next submenus: WAN, LAN and WLAN. Click any of them, and you will be able to configure the corresponding function. 4.2.1 WAN 4.2.1.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Choose “Setup→WAN→WAN” menu, you can configure the parameters for WAN in the next screen (shown in Figure 4-4). Figure 4-4 ¾ Current ATM VC Table: ATM settings are used to connect to your ISP. Your ISP provides VPI (Virtual Path Identifier), VCI (Virtual Channel Identifier) settings to you. In this Device, there is one VC configured by default.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide • VPI: Identifies the virtual path between endpoints in an ATM network. The valid range is from 0 to 255. Please input the value provided by your ISP. • VCI: Identifies the virtual channel endpoints in an ATM network. The valid range is from 32 to 65535 (1 to 31 is reserved for well-known protocols). Please input the value provided by your ISP. • Encapsulation: Specifies the type of Multiplexing, either LLC or VC-Mux.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ Add: Click this button to add a VC. First fill the parameters above and then click this button, thus your new VC will be added to the Current ATM VC Table. ¾ Modify: Click this button to modify your existed VC. First choose the desired VC and modify the parameters, and then click this button, thus your existed VC will be modified. ¾ Delete: Click this button to delete your existed VC.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ QoS: Select the Quality of Service types for the Virtual Circuit, including UBR (Unspecified Bit Rate), CBR (Constant Bit Rate), and nrt-VBR (Variable Bit Rate) and rt-VBR. Please note that the selection of QoS type will lead to the availability of the following parameters, including PCR (Peak Cell Rate), CDVT (Cell Delay Variation Tolerance), SCR (Sustained Cell Rate) and MBS (Maximum Burst Size). Please configure them according to your needs.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.2.2 LAN 4.2.2.1 LAN Choose “Setup→LAN→LAN” menu, and you will see the LAN Interface Setup screen (shown in Figure 4-7). Here you can change IP address, subnet mask and other parameters for LAN interface. Figure 4-7 ¾ Interface Name: Displays the name of the LAN interface for the device. • IP Address: The Router’s local IP Address. You can access to the Web-based Utility via the IP Address, the default value is 192.168.1.1.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ MAC Address Control: The router supports the MAC address control on Ethernet port. Select the LAN interface on which you want to run MAC Address Control. Click the Apply Changes button to make the configuration take effect.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-8 ¾ LAN IP Address: Displays the LAN IP address of the Modem Router ¾ Subnet Mask: Displays the subnet mask of the Modem Router. ¾ DHCP Mode: Options available are None, DHCP Relay and DHCP Server. 1) None: In this mode, the Modem Router will do nothing when the host requests an IP address by DHCP protocol. The screen will be shown as in Figure 4-9. Figure 4-9 2) DHCP Relay: In this mode, the Router will work as a DHCP Relay.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide DHCP relay. In this mode, the DHCP requests from local PCs will be forwarded to the DHCP server running on WAN side. Figure 4-10 • 3) Relay Server: Enter the IP Address of the DHCP server running on WAN side. DHCP Server: Select this mode, then the screen will be shown as in Figure 4-11. The Router will work as a DHCP Server; it becomes the default gateway for DHCP client connected to it.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide • Max Lease Time: The time that the DHCP client is allowed to maintain the assigned dynamic IP. After the dynamic IP address has expired, the user will be automatically assigned a new one. The default is 1440 minutes. • Domain Name: Specify a user-friendly name to refer to the group of hosts (subnet) that will be assigned addresses from this pool. • DNS Servers: The IP address of DNS server used in option filed of DHCP message.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ) Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.2.2.3 DHCP Static Choose “Setup→LAN→DHCP Static” menu, you can view and add a static address for client via the next screen (shown in Figure 4-13).
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.2.3.1 Basic Choose “Setup→WLAN→Basic” menu, and you will see the Wireless Basic Settings screen (shown in Figure 4-14). Please configure the parameters for wireless according to the descriptions below. Figure 4-14 ¾ Disable Wireless LAN Interface: Choose to disable the Wireless function of the ADSL Router. ¾ Band: Options available are 2.4 GHz (B), 2.4 GHz (G), 2.4 GHz (B+G), 2.4 GHz (N), 2.4 GHz (G+N), and 2.4 GHz (B+G+N).
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ Radio Power (Percent): Here you can specify the Radio Power of Router. You can select High, Middle or Low which you would like. High is the default setting and is recommended. ¾ Associated Clients: Click the Show Active Clients button to view the information of wireless clients that connects to the ADSL Router. Click Apply Changes button to save your changes.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Step 1. Select “WEP” from the Encryption drop-down list. The following available options will change to offer the appropriate settings. Figure 4-16 Step 2. Click Set WEP Key button to enter the Wireless WEP Key Setup screen as shown in Figure 4-17.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Step 3. Fill in the above parameters according to the guides below. • Key Length: Select the desired length. Options available are 64-bit and 128-bit. • Key Format: Select the desired format. Options available are ASCII (5 characters) and Hex (10 characters). • Default Tx Key: Select the desired key for the configuration. • Encryption Key 1/2/3/4: Create a key for your wireless network. Step 4. Click Apply Changes to save your configuration.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-18 Step 2. Select the desired WPA Authentication Mode, Enterprise (RADIUS) or Personal (Pre-Shared key). After the selection, the following available options will change to offer the appropriate configuration. • Enterprise (RADIUS): If this mode is selected, parameters including Port, IP address and Password are required in Authentication RADIUS Server filed.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-19 ¾ Wireless Access Control Mode: Options are “Disable”, “Allow Listed” and “Deny Listed”. If the mode is “Disable”, it means the wireless access control function is closed; if the mode is “Allow Listed”, only the client on the list will be able to connect to you access point; if the mode is “Deny Listed”, these wireless clients on the list will not be able to connect to you access point. Click Apply Changes to save your configuration.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-20 ¾ Fragment Threshold: This value specifies the maximum size for a packet before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold too low may result in poor network performance. Only minor reduction of the default value is recommended. In most cases, it should remain at its default value of 2346.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ Broadcast SSID: When wireless clients survey the local area for wireless networks to associate with, they will detect the SSID broadcast by the Router. To broadcast the Router’s SSID, select “Enable”. If you don’t want to broadcast the Router’s SSID, select “Disable”. After configuration, click Apply Changes button to save your changes. ) Note: 1.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ Push Button Configuration: Click Start PBC button when using PBC method for WPS configuration. 1) PBC If the wireless adapter supports WPS and the Push Button Configuration (PBC) method, you can add it to the network by PBC with the following two methods. Method One: Step 1: Press the WPS button on the front panel of the Router or click Start PBC button in Figure 4-21.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide The WPS Configuration Screen of Wireless Adapter Method Two: Step 1: Press the WPS button on the front panel of the Router or click Start PBC button in Figure 4-21. Step 2: For the configuration of the wireless adapter, please choose “Push the button on my access point” in the configuration utility of the WPS as below, and click Next.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide The WPS Configuration Screen of Wireless Adapter Step 3: Wait for a while until the next screen appears. Click Finish to complete the WPS configuration. The WPS Configuration Screen of Wireless Adapter 2) PIN code If the wireless adapter supports WPS and the PIN method, you can add it to the network by PIN with the following two methods.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Method One: Enter the PIN into my Router Step 1: For the configuration of the wireless adapter, please choose “Enter a PIN into my access point or a registrar” in the configuration utility of the WPS, and get the PIN code on the screen as below, then click Next. The WPS Configuration Screen of Wireless Adapter Step 2: For the Router, enter the PIN code of the wireless adapter in the Client PIN Number field as shown below. Then click Start PIN.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Method Two: Enter the PIN from my Router Step 1: Get the Current PIN code of the Router from Self-PIN Number in Figure 4-22 (each Router has its unique PIN code. Here takes the PIN code 12345670 of this Router for example). Step 2: For the configuration of the wireless adapter, please choose “Enter a PIN from my access point” in the configuration utility of the WPS as below, and enter the PIN code of the Router into the Access Point PIN field.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ) Note: If you want to enable the WDS, please go to the page WLAN->Basic, and select the "Mode" to be AP+WDS. Figure 4-23 ¾ Enable WDS: Select to enable WDS. ¾ Add WDS AP: To add MAC addresses of other Access Point, follow the steps below. Step 1. Enter MAC Address of the Access Point to communicate with in “MAC Address” field. Step 2. Give a description for that Access Point in “Comment” field. Step 3.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.3.1 Route 4.3.1.1 Static Route Choose “Advanced→Route→Static Route” menu, you can configure the routing information in the next screen (shown in Figure 4-24). Here you can add or delete IP routes. Figure 4-24 ¾ Enable: Check the box to enable this function. ¾ Destination: Enter the IP network address of the final destination. It can be a subnet IP or a host address.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-25 ¾ RIP: Select to enable the RIP function or not. Click the Apply button to save your configuration. ¾ Interface: Select the interface on which you want to enable RIP. ¾ Recv Version: Indicate the RIP version in which information must be passed to the device. It can be accepted into its routing table. ¾ Send Version: Indicate the RIP version this interface will use when it sends its route information to the other device.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-26 ¾ Enable DMZ: Check the box to enable DMZ function. ¾ DMZ Host IP Address: Enter the specified IP Address for DMZ host on the LAN side. Click Apply Changes to save your configuration. ) Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.3.2.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-27 ¾ Usual Service Name: The Router provides some common services. Select the one you need. ¾ User-defined Service Name: If the service can not be found in the Usual Service Name drop-down list, just enter the name manually in this field instead. ¾ Protocol: The protocol used for this virtual server. ¾ WAN Setting: The WAN setting of this virtual server used; it can be interface and IP address.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ) Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. For example: If you want to setup a FTP Server on LAN host 192.168.1.33, you can configure a virtual server rule as follows: Step 1: Select “FTP” from Usual Service Name drop-down list. Protocol, WAN Port, and LAN Open Port will be automatically filled, and you don’t need to change them.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.3.2.4 Port Trigger Choose “Advanced→NAT→Port Trigger”, and then you can configure the port trigger rules in the screen as shown in Figure 4-29. Port trigger is used to restrict certain types of data packets from your local network to Internet. Some applications require multiple connections, like Internet games, video conferencing, Internet calling and so on. These applications cannot work with a pure NAT Router.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ Trigger Protocol: The protocol to trigger the rule, it can be TCP, UDP or TCP/UDP. ¾ Start Relate Port / End Relate Port: The start and end related port. ¾ Open Protocol: It can be TCP, UDP or TCP/UDP. ¾ NAT Type: It can be outgoing or incoming. Click the Apply Changes button to save your configuration. And then the trigger rule will be added to the Current Portrigger Table.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide global IP. ¾ z Many-to-Many: The IP between “Local Start IP” and “Local End IP” will be mapped to the IP between “Global Start IP” and “Global End IP”. z One-to-Many: One local IP will be mapped to any of the IP between “Global Start IP” and “Global End IP”. Local Start IP / Local End IP: Enter the local IP Address you plan to map to. Local Start IP is the starting local IP address and Local End IP is the ending local IP address.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-31 ¾ IP QoS: Choose “enable”, and then you will see the following parameters. ¾ QoS Policy: Policy of QoS. The traffic will be classified on the base of this policy. It can be based on stream, 802.1p or DSCP. For detail instruction, please refer to 4.3.3.1 Stream, 4.3.3.2 802.1p and 4.3.3.3 DSCP. ¾ Schedule Mode: The schedule mode of the IP QoS function, it can be “strict prior” or “WFQ (4:3:2:1)”.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-32 ¾ Src IP: The source IP address of the rule. ¾ Src Mask: The source mask of the rule. ¾ Dest IP: The destination IP address of the rule. ¾ Dest Mask: The destination mask of the rule. ¾ Src Port: The source port number of the rule. If the “Protocol” filed is not been selected or is selected as ICMP, the “Src Port” filed can’t be configured. ¾ Dest Port: The destination port number of the rule.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ Phy port: The incoming port of the rule. It indicates the physical port of the traffic is incoming. ¾ Set Priority: The priority of the rule. It can be p0(highest), p1, p2, p3(lowest). The traffic matches the rule will be assigned the priority you have configured. ¾ Insert or modify QoS mark: You can insert or modify the DSCP or 802.1p tag. The traffic matches the rule will be added or modified the mark. ) Note: If you select 802.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-33 ¾ 802.1p rule list: Shows the current rules on the device. ¾ 802.1p tag: The number of 802.1p tag. ¾ Send priority: The priority to transmit. The traffic matches the 802.1p filed will be assigned this priority. ¾ Modify: Click this button to save your priority configuration. 4.3.3.3 DSCP If the QoS policy is “DSCP based”, you should configure the DSCP setting. Press the “DSCP config” button to configure the DSCP priority.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-34 ¾ DSCP tag: The value of the DSCP filed. ¾ Transmit prior: The priority to transmit. The traffic matches the DSCP filed will be assigned this priority. ¾ Dscp rule list: Shows the current rules on the device. 4.3.4 CWMP Choose “Advanced→CWMP”, you can configure the CWMP function in the screen (shown in Figure 4-35). Here you may change the setting for the ACS’s parameters.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-35 ACS parameters ¾ Enable: Enable or disable the CWMP. ¾ URL: Enter the website of ACS which is provided by your ISP. ¾ User Name/Password: Enter the User Name and password the device should use when connecting to the ACS.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ Reset: Click this button to delete your entering. ) Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.3.5 Port mapping Choose “Advanced→Port Mapping”, you can configure the mapping group in the screen (shown in Figure 4-36).
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-36 You can enable or disable the port mapping function of the device by the select radio button. If “Enable” radio is selected, you can configure the mapping group as follow steps. 1. Select a group （Group 1, Group 2, Group3 or Group 4） from the table, then you can see the available interface (LAN and WAN) and grouped interface list 2.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 3. Click the Apply button to finish the configuration. ) Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.3.6 Others Choose “Advanced→Others”, you can configure the client limit settings in the screen (shown in Figure 4-37). Client limit allows you to force how many devices can access to the internet.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.4.1 IGMP Proxy Choose “Service→IGMP Proxy” menu, you can configure the IGMP proxy in the screen (shown in Figure 4-38). Here you can enable or disable the IGMP proxy function on all WAN interface, and you can also set the parameters of the IGMP function. IP hosts use Internet Group Management Protocol (IGMP) to report their multicast group memberships to neighbor routers.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-39 ¾ UPnP: Choose to enable or disable the UPnP function. Only when the function is enabled, can the UPnP take effect. ¾ WAN interface: Select to run UPnP function on which interface. ) Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.4.3 SNMP Choose “Service→SNMP”, you can see the SNMP screen (shown in Figure 4-40).
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-40 ¾ Enable SNMP: Choose to enable or disable the SNMP support. ¾ System Description: System description of the device. ¾ System Contact: Contact information of the device. ¾ System name: Name of the device. ¾ System Location: The physical location of the device ¾ Trap IP address: Destination IP address of SNMP trap. ¾ Community name (read-only): Name of the read-only community.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ) Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.4.5 DDNS Choose “Service→DDNS”, you can configure the DDNS function in the screen (shown in Figure 4-42). The router offers a Dynamic Domain Name System (DDNS) feature. The feature lets you use a static host name with a dynamic IP address.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ Username: Username assigned by the DDNS provider. ¾ Password: Password assigned by the DDNS provider TZO Settings: ¾ Email: Email address assigned by DDNS provider. ¾ Key: Key assigned by DDNS provider. ¾ Dynamic DDNS Table: Display the DDNS entry of this device. Click the Add button to add the DDNS entry. Click the Remove button to delete the existed DDNS entry.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-43 ¾ Outgoing/Incoming Default Policy: The default action of outgoing/incoming connection. It can be “Deny” or “Allow”. If the connection doesn’t match any MAC filtering rules, the router will handle the connection with the default action you have set. ¾ Direction: The direction of the filter entry, it can be “Outgoing” or “Incoming”. ¾ Action: The action of the filter entry, it can be “Deny” or “Allow”.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ) Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.5.2 IP/Port Filter Choose “Firewall→IP/Port Filter” menu, and you will see the next screen (shown in Figure 4-44). Here you can set the IP/Port filter rules to secure or restrict your local network. Figure 4-44 ¾ SPI Firewall: Choose to enable or disable the SPI firewall.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ SPort: Tf the protocol is “TCP” or “UDP”, you should set the source port of the entry. It can be a single port or a port range. ¾ Dport: TI the protocol is “TCP” or “UDP”, you should set the destination port of the entry. It can be a single port or a port range. ¾ Enable: Choose to enable or disable this filter entry. ¾ Current Filter table: It shows the current filter rules. You can enable or disable or delete the filter entry.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Step 1: Select “Enable” (show in Figure 4-45). Step 2: Enter “yahoo.com” in the Keyword field. Step 3: Finally click the AddKeyword to save the entry. ) Note: After configuration, you need to click the Save button appeared on the left panel so that your configuration can still take effect after the Router reboots. 4.5.4 ACL Choose “Firewall→ACL”, you can see the next screen (shown in Figure 4-46).
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-47 ¾ LAN ACL Switch: You can enable or disable the ACL function on LAN side. If it is disabled, all hosts on LAN side can access the services which your router provides. If it is enabled, only the hosts on the “Current ACL Table” can access the specified services. ¾ IP Address: The IP address of the host, “0.0.0.0” means any IP. ¾ Service Allowed (LAN side): The allowed services which the host can access.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-48 ¾ WAN Setting: The setting of WAN side, it can be “Interface” or “IP Address”. If it is “Interface”, you should specify a WAN interface for this ACL entry. If the WAN setting is “IP Address”, you should specify the IP address of the host on WAN side. ¾ Service Allowed: You can specify the service and opened port for this service on WAN side. The host access the specified port can obtain the specified service the router provides.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide ¾ Current ACL Table: It shows the current ACL setting. 4.6 Maintenance Choose “Maintenance”, you can see the next submenus: Click any of them, and you will be able to configure the corresponding function. 4.6.1 Update 4.6.1.1 Firmware Update Choose “Maintenance→Update→Firmware Update”, you can upgrade the firmware of the Router in the screen (shown in Figure 4-49). Make sure the firmware you want to use is on the local hard drive of the computer.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide To upgrade the router's firmware, follow these instructions below: Step 1: Type the exact path of the update file into the “Select File” field. Or click the Browse button to locate the update file. Step 2: Click the Upload button. ) Note: 1. When you upgrade the router's firmware, you may lose its current configurations, so please back up the router’s current settings before you upgrade its firmware. 2.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-51 Step 2: Save the file as the appointed file (shown in Figure 4-52). Figure 4-52 To restore the Router’s settings: Step 1: Click the Browse button to locate the file for the device, or enter the exact path in “Load Settings from File” field.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Step 2: Click the Upload button to complete. 4.6.2 Password Choose “Maintenance→Password”, you can configure the user account of the router in the screen (shown in Figure 4-53). Here you can add user account to access the web server, and modify the password of the specified user. Figure 4-53 4.6.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.6.4 Time Choose “Maintenance→Time”, you can configure the system time in the screen (shown in Figure 4-55). Simple Network Timing Protocol (SNTP) is a protocol used to synchronize the system time to the public SNTP server. You can also configure the time manually. Figure 4-55 1) Manually You need to set the date and time corresponding to the current time. And then click Apply Changes button to save your configuration.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 2) NTP Figure 4-57 ¾ State: Indicate the current state of NTP function. Choose to enable the NTP or not. ¾ Server/Server2: Enter the IP address or the host name of the NTP server. ¾ Interval: The interval time of NTP function. ¾ Time Zone: The time zone in which the device resides. ¾ Get GMT Time: After setting the NTP configuration correctly, click this button to start the NTP function.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-58 ) Note: If changes are made, after clicking Apply Changes button, a Save button will appear on the left panel. You need to click the Save button to make your changes take effect. 4.6.6 Diagnostic The router provides several useful diagnostic tools. 4.6.6.1 Ping Choose “Maintenance→Diagnostic→Ping”, you can ping a specified host (shown in Figure 4-59). Figure 4-59 ¾ Host: Enter the IP address or host name you want to ping.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 4.6.6.2 Tracert Choose “Maintenance→Diagnostic→Tracert”, you can tracert a host you want (shown in Figure 4-60). The router provides a tracert command to measure the route path and transit times of packets across an Internet Protocol (IP) network. Figure 4-60 ¾ Host: Enter the IP address or host name you want to run trace route command. ¾ NumberofTriers: Enter the number of try. ¾ Timeout: The time for the trace route command timeout.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-61 ¾ Flow type: The ATM OAM flow type. The selection can be F5 Segment, F5 End-to-End, F4 Segment or F4 End-to-End. ¾ VPI: The VPI number you want to do the loopback diagnostics. ¾ VCI: The VCI number you want to do the loopback diagnostics. 4.6.6.4 ADSL Diagnostic Choose “Maintenance→Diagnostic→ADSL Diagnostic”, you will see the next screen (shown in Figure 4-62). ADSL diagnostics allows you to diagnostics the ADSL tone.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-62 Click the Start button to start the diagnostic, and then wait several minutes later you will see the test result. 4.6.6.5 Diag-Test Choose “Maintenance→Diagnostic→Diag-Test”, you can select an interface to run diagnostic in Figure 4-63. The Diagnostic Test allows you to test your DSL connection of the physical layer and protocol layer for both LAN and WAN sides.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Figure 4-63 Click the Run Diagnostic Test button to start the test, and then wait several times later you can see the diagnostic result.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Appendix A: Specifications General ANSI T1.413, ITU G.992.1, ITU G.992.2, ITU G.992.3, ITU G.992.5, Standards and Protocols IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.3, IEEE 802.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Appendix B: Troubleshooting 1. How do I restore my Router’s configuration to its factory default settings? With the Router powered on, press and hold the RESET button on the rear panel for 8 to 10 seconds before releasing it. ) Note: Once the Router is reset, the current configuration settings will be lost and you will need to re-configure the router. 2.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Click Network Connections Right-click Local Area Connection Click Properties Double-click Internet Protocol (TCP/IP) 84
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Select Obtain an IP address automatically Select Obtain DNS server address automatically Click OK Click OK 85
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide For Windows Vista OS Go to Start > Settings >Control Panel, and then you will see the following page.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Double-click Internet Protocol Version 4 (TCP/IPv4) Select Obtain an IP address automatically Select Obtain DNS server address automatically Click OK 87
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide For Windows 7 OS Go to Start > Settings > Control Panel, and then you will see the following page.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Double-click Internet Protocol Version 4 (TCP/IPv4) Select Obtain an IP address automatically Select Obtain DNS server address automatically Click OK 89
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide 2) Configure your IE browser Open your IE browser, click Tools tab and you will see the following screen. Click Internet Options Select Never dial a connection Click OK 4. What can I do if I cannot access the Internet? 1) Check to see if all the connectors are connected well, including the telephone line, Ethernet cables and power adapter.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide default settings and reconfigure your Router following the instructions of this QIG. Please feel free to contact our Technical Support if the problem persists. ) Note: For more details about Troubleshooting and Technical Support contact information, please log on to our Technical Support Website: http://www.tp-link.com/support/Support.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide Appendix C: Technical Support Technical Support For more troubleshooting help, go to: www.tp-link.com/support/faq.asp To download the latest Firmware, Driver, Utility and User Guide, go to: www.tp-link.com/support/download.asp For all other technical support, please contact us by using the following details: Global Tel: +86 755 26504400 E-mail: support@tp-link.
