TD-8840T ADSL2+ Modem Router Rev: 4.0.
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 © 2012 TP-LINK TECHNOLOGIES CO., LTD.
FCC STATEMENT This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
TP-LINK TECHNOLOGIES CO., LTD DECLARATION OF CONFORMITY For the following equipment: Product Description: ADSL2+ Modem Router Model No.
CONTENTS Package Contents ....................................................................................................1 Chapter 1. Product Overview...................................................................................2 1.1 Overview of the Modem Router ...................................................................................... 2 1.2 Main Features................................................................................................................. 3 1.
4.6.3 RIP Settings ....................................................................................................................... 35 4.7 Forwarding.................................................................................................................... 36 4.7.1 Virtual Servers.................................................................................................................... 36 4.7.2 Port Triggering .......................................................................
TD-8840T ADSL2+ Modem Router User Guide Package Contents The following contents should be found in your package: ¾ One TD-8840T ADSL2+ Modem Router ¾ One Power Adapter for TD-8840T ADSL2+ Modem Router ¾ Quick Installation Guide ¾ One RJ45 cable ¾ Two RJ11 cables ¾ One ADSL splitter ¾ One Resource CD for TD-8840T ADSL2+ Modem Router, including: • This User Guide • Other Helpful Information ) Note: Make sure that the package contains the above items.
TD-8840T ADSL2+ Modem Router User Guide Chapter 1. Product Overview Thank you for choosing the TD-8840T ADSL2+ Modem Router. 1.1 Overview of the Modem Router The device is designed to provide a simple and cost-effective ADSL Internet connection for a private Ethernet network. The TD-8840T ADSL2+ Modem Router connects to an Ethernet LAN or computers via standard Ethernet ports. The ADSL connection is made using ordinary telephone line with standard connectors.
TD-8840T ADSL2+ Modem Router User Guide 1.2 Main Features ¾ 4 10/100M RJ45 LAN ports (Auto MDI/MDIX), 1 RJ11 port. ¾ Downstream data rates up to 24Mbps, upstream data rates up to 3.5Mbps（With Annex M enabled）. ¾ Supports long transfers, the max line length can reach to 6.5Km. ¾ Supports remote configuration and management through SNMP and CWMP. ¾ Supports PPPoE, it allows connecting the internet on demand and disconnecting from the Internet when idle.
TD-8840T ADSL2+ Modem Router User Guide 1.3 Panel Layout 1.3.1 The Front Panel Figure 1-1 The Router’s LEDs are located on the front panel (View from left to right). They indicate the device’s working status. For details, please refer to LED Explanation. LED Explanation: Name Status Indication On Power is on. Off Power is off. On The ADSL port is linked up. Power ADSL Internet 1~4 (LAN) Flash The ADSL negotiation is in progress. Off The ADSL port is linked down.
TD-8840T ADSL2+ Modem Router User Guide ¾ POWER: The Power socket is where the power adapter connects to. ¾ ON/OFF: The switch for the power. 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. And the Router will reboot to its factory default settings. Method two：Restore the default setting from “Maintenance-SysRestart” of the Router's Web-based Utility.
TD-8840T ADSL2+ Modem Router User Guide Chapter 2. Connecting the Modem Router 2.1 Installation Environment ¾ The Product should not be located where it will be exposed to moisture or excessive heat. ¾ Place the Router in a location where it can be connected to the various devices as well as to a power source. ¾ Make sure the cables and power cord are placed safely out of the way so they do not create a tripping hazard. ¾ The Router can be placed on a shelf or desktop.
TD-8840T ADSL2+ Modem Router User Guide 2.2 Connecting the Modem Router Before installing the device, please make sure your broadband service provided by your ISP is available. If there is any problem, please contact your ISP. Before cable connection, cut off the power supply and keep your hands dry. You can follow the steps below to install it. Step 1: Connect the ADSL Line.
TD-8840T ADSL2+ Modem Router User Guide Chapter 3. Quick Installation Guide 3.1 Configuring the PC After you directly connect your PC to the Modem Router or connect your adapter to a Hub/Switch which has connected to the Modem 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).
TD-8840T ADSL2+ Modem Router User Guide Figure 3-2 Step 3: Select General tab, highlight Internet Protocol (TCP/IP), and then click the Properties button.
TD-8840T ADSL2+ Modem Router User Guide 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. Please click the Start menu on your desktop, select run tab, type cmd or command in the field and press Enter.
TD-8840T ADSL2+ Modem Router User Guide If the result displayed is similar to the screen shown below, it means that your PC has not connected to the Modem Router. Figure 3-6 You can check it following the steps below: 1) Is the connection between your PC and the Modem 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.
TD-8840T ADSL2+ Modem Router User Guide Figure 3-8 ) Note: 1) Do not mix up the user name and password with your ADSL account user name and password which are needed for PPP connections. 2) If the above screen does not pop up, it means that your Web-browser has been set to a proxy. Go to Tools menu→Internet Options→Connections→LAN Settings, in the screen that appears, cancel the Using Proxy checkbox, and click OK to finish it. 2.
TD-8840T ADSL2+ Modem Router User Guide Figure 3-9 3. Change the VPI or VCI values which are used to define a unique path for your connection. If you have been given specific settings for this to configuration, type in the correct values assigned by your ISP. Click Next. Figure 3-10 4. Here we select PPPoE WAN Link Type for example, enter the Username, Password and Confirm Password given by your ISP, and then click Next.
TD-8840T ADSL2+ Modem Router User Guide Figure 3-11 5. On this page, please confirm all parameters. Click Previous to modify or click the Save button to make the configuration take effect. Figure 3-12 6. You will see the Complete screen below, click Finish to complete these settings.
TD-8840T ADSL2+ Modem Router User Guide Chapter 4. Configuring the Modem Router This chapter will show each Web page's key function and the configuration way. 4.1 Login After your successful login, you will see the fifteen main menus on the left of the Web-based utility. On the right, there are the corresponding explanations and instructions. The detailed explanations for each Web page’s key function are listed below. 4.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-1 4.3 Quick Setup Please refer to Section 3.2 Login. 4.4 Network Choose “Network”, there are many submenus under the main menu. Click any one of them, and you will be able to configure the corresponding function.
TD-8840T ADSL2+ Modem Router User Guide 4.4.1 WAN Settings Choose “Network”Æ“WAN Settings”, and you will see the WAN Port Information Table in the screen similar to Figure 4-2, which describes the WAN port settings and the relevant manipulation to each interface. There are five different configurations for the connection types, which are Static IP, Dynamic IP, PPPoE, IPoA, and Bridge. You can select the corresponding types according to your needs.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-3 4.4.1.1 Static IP Select this option if your ISP provides static IP information to you. You should set static IP address, IP subnet mask, and gateway address in the screen below.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-4 ATM Configuration: ¾ VPI (0~255): 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. ¾ VCI (1~65535): Identifies the virtual channel endpoints in an ATM network. The valid range is from 1 to 65535 (1 to 31 is reserved for well-known protocols). Please input the value provided by your ISP. Click Advanced, advanced selections of ATM Configuration can be shown.
TD-8840T ADSL2+ Modem Router User Guide ¾ Default Gateway: select a WAN Interface from the drop-down list as the IPv4 default gateway. ¾ MTU (bytes): Maximum Transmission Unit Size. Check this box then you can change the MTU size. The default MTU value is 1500 Bytes. It is not recommended that you change the default value unless required by your ISP. ¾ Enable NAT: This technology translates the IP addresses of a local area network to a different IP address for the Internet.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-5 Click Advanced, advanced selections for WAN Service Setup can be shown. ¾ MTU (bytes): Maximum Transmission Unit Size. Check this box then you can change the MTU size. The default MTU value is 1500 Bytes. It is not recommended that you change the default value unless required by your ISP. ¾ Enable NAT: This technology translates the IP addresses of a local area network to a different IP address for the Internet.
TD-8840T ADSL2+ Modem Router User Guide ¾ Primary DNS Server/ Secondary DNS Server: Choose “Set DNS Server manually”, you can set DNS Server (at least one) manually here. The Route will use this DNS Server for priority. Click the Save button to save the settings. 4.4.1.3 PPPoE If your ISP provides a PPPoE connection and you need to use an ATM Interface, choose PPPoE in the drop-down list, and then the screen will be displayed as below.
TD-8840T ADSL2+ Modem Router User Guide ¾ Choose the right connection type according to your needs: For PPPoE connection, you can select Connect on demand or Connect automatically or Connect manually. Connect on demand is dependent on the traffic. If there is no traffic (or Idle) for a pre-specified period of time), the connection will tear down automatically. And once there is traffic send or receive, the connection will be automatically on.
TD-8840T ADSL2+ Modem Router User Guide 4.4.1.5 IPoA If your ISP provides an IPoA connection, select IPoA option for the WAN service type on the screen. Figure 4-8 ¾ IP Address/Subnet Mask: Enter the IP Address and Subnet Mask provided by ISP. If you forget, you can ask your ISP. ¾ DNS Server/Secondary DNS Server: Type in your preferred DNS server. ¾ Default Gateway: select a WAN Interface from the drop-down list as the IPv4 default gateway. 4.4.1.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-9 ) Note: After you finish the Internet configuration, please click Save to make the settings take effect. 4.4.2 Interface Grouping Choose “Network”Æ“Interface Grouping”, you can view all the current groups on this page (shown in Figure 4-10). Figure 4-10 ¾ VLAN: Enable or disable this function.
TD-8840T ADSL2+ Modem Router User Guide To support this feature, you must create mapping groups with appropriate LAN and WAN interfaces using the Add button. The Remove button will remove the grouping and add the ungrouped interfaces to the Default group. Only the default group has IP interface. Click the Add button. You can add a new interface group in the next screen. For example, you want LAN1 and LAN3 to be a group called Group 1 over br_0_35_0 WAN interface, you can refer to the following figure.
TD-8840T ADSL2+ Modem Router User Guide ¾ IP Address: You can configure the Modem Router’s IP Address and Subnet Mask for LAN Interface. • IP Address: Enter the Modem Router’s local IP Address, then you can access to the Web-based Utility via the IP Address, the default value is 192.168.1.1. • Subnet Mask: Enter the Modem Router’s Subnet Mask, the default value is 255.255.255.0. ¾ Enable IGMP Snooping: If you select the option, please choose the IGMP Mode: Standard Mode or Blocking Mode.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-13 ) Note: Only the WAN Ports can use MAC Address Clone function. All the clone MAC addresses must not be the same with each other. 4.4.5 ALG Settings Choose menu “Advanced Setup”Æ“ALG Settings”, and then you can configure the basic security in the screen as shown in Figure 4-14. Figure 4-14 ¾ Virtual Private Network (VPN) - VPN Passthrough must be enabled if you want to allow VPN tunnels using VPN protocols to pass through the Modem Router.
TD-8840T ADSL2+ Modem Router User Guide layer "control/data" protocols such as FTP, TFTP etc. • • FTP ALG - To allow FTP clients and servers to transfer data across NAT, click Enable. TFTP ALG - To allow TFTP clients and servers to transfer data across NAT, click Enable. Click the Save button to save your settings. 4.4.6 DSL Settings Choose “Advanced Setup”Æ“DSL Settings”, you can select the DSL Modulation Type and Annex Type in the next screen.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-16 ¾ Start IP Address: Enter a value for the DHCP server to start with when issuing IP addresses. Because the default IP address for the Modem Router is 192.168.1.1, the default Start IP Address is 192.168.1.100, and the Start IP Address must be 192.168.1.100 or greater, but smaller than 192.168.1.254. ¾ End IP Address: Enter a value for the DHCP server to end with when issuing IP addresses. The End IP Address must be smaller than 192.168.1.254.
TD-8840T ADSL2+ Modem Router User Guide ) Note: 1) 2) 3) To use the DHCP server function of the Modem Router, you must configure all computers on the LAN as "Obtain an IP Address automatically". You have to disable NAT of the WAN connections, or the DHCP Relay may not take effect. If you select Disabled, the DHCP function will not take effect. Click the Save button to save your settings. 4.5.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-18 ¾ MAC Address: The MAC address of the PC for which you want to reserve an IP address. ¾ IP Address: The IP address reserved for the PC by the Modem Router. ¾ Status: The status of this entry either Enabled or Disabled. To Reserve an IP address: 1. Click the Add New button. Then Figure 4-19 will pop up. 2. Enter the MAC address (in XX:XX:XX:XX:XX:XX format.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-20 To add a vendor class: 1. Click the Add New button. Then Figure 4-21 will pop up. 2. Enter parameters for the vendor class. Click the Save button. Figure 4-21 To modify or delete an existing entry: 4. Click the Edit in the entry you want to modify. If you want to delete the entry, click the Delete. 5. Modify the information. 6. Click the Save button. Click the Enable/Disable Selected button to make selected entries enabled/disabled.
TD-8840T ADSL2+ Modem Router User Guide 4.6.1 Default Gateway Choose “Route Settings”Æ“Default Gateway”, you can see the Default Gateway screen. You can select a WAN Interface from the drop-down list as the system default gateway. Figure 4-22 Click the Add Interface button, you can add WAN Interfaces. Click the Save button to save your settings. 4.6.2 Static Route Choose “Route Settings”Æ “Static Route”.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-24 2. Enter the following data: ¾ Destination IP Address: The Destination IP Address is the address of the network or host that you want to assign to a static route. ¾ Subnet Mask: The Subnet Mask determines which portion of an IP Address is the network portion, and which portion is the host portion. ¾ Gateway: Here you should type the Gateway address correctly, and the option for Interface will adopt the default Gateway address for the Static Route.
TD-8840T ADSL2+ Modem Router User Guide 4.7 Forwarding There are four submenus under the Forwarding menu: Virtual Servers, Port Triggering, DMZ and UPnP. Click any of them, and you will be able to configure the corresponding function. 4.7.1 Virtual Servers Choose menu “Forwarding” → “Virtual Servers”, and then you can view and add virtual servers in the next screen (shown in Figure 4-26). Virtual servers can be used for setting up public services on your LAN.
TD-8840T ADSL2+ Modem Router User Guide 5. Select the protocol used for this application in the Protocol drop-down list, either TCP, UDP, or All. 6. Select the Enabled option in the Status drop-down list. Click the Save button. Figure 4-27 ) Note: It is possible that you have a computer or server that has more than one type of available service. If so, select another service, and type the same IP address for that computer or server. To modify or delete an existing entry: 1.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-28 To add a new rule, follow the steps below. 1. Click the Add New button, the next screen will pop-up as shown in Figure 4-29. 2. Select a common application from the Common Service Port drop-down list, then the Trigger Port field and the Open Ports field will be automatically filled. If the Common Service Port do not have the application you need, enter the Trigger Port and the Open Ports manually. 3.
TD-8840T ADSL2+ Modem Router User Guide ¾ Open Protocol: The protocol used for Incoming Port, either TCP, UDP, or ALL (all protocols supported by the Modem Router). ¾ Status: The status of this entry, Enabled means the Port Triggering entry is enabled. ¾ Modify: To modify or delete an existing entry. ¾ Common Service Port: Some popular applications already listed in the drop-down list of Open Protocol. To modify or delete an existing entry: 1. Find the desired entry in the table. 2.
TD-8840T ADSL2+ Modem Router User Guide To assign a computer or server to be a DMZ server: 1. Click the Enable button. 2. Enter the IP address of a local PC that is set to be DMZ host in the DMZ Host IP Address field. 3. Click the Save button. 4.7.4 UPnP Choose menu “Forwarding→UPnP”, and then you can view the information about UPnP in the screen (shown in Figure 4-31).
TD-8840T ADSL2+ Modem Router User Guide Figure 4-32 ¾ Enable Parental Control: Check the box if you want this function to take effect. This function is disabled by default. ¾ MAC Address of Parental PC: In this field, enter the MAC address of the controlling PC, or you can make use of the Copy To Above button below. ¾ MAC Address of Current PC: This field displays the MAC address of the PC that is managing this Modem Router.
TD-8840T ADSL2+ Modem Router User Guide 4.9 Firewall There are five submenus under the Firewall menu: Rule, LAN Host, WAN Host, Schedule and DDoS. Click any of them, and you will be able to configure the corresponding function. 4.9.1 Rule Choose menu “Firewall” → “Rule”, and then you can view and set the rules in the screen as shown in Figure 4-33. Figure 4-33 ¾ Enable Firewall: Select the check box to enable the Firewalll function, so the Default Filtering Rules can take effect.
TD-8840T ADSL2+ Modem Router User Guide ¾ Delete Selected: Click the Delete Selected button to delete the selected entries in the table. The methods to add a new rule: 1. Click the Add New button and the next screen will pop up as shown in Figure 4-34. 2. Give a name (e.g. Rule_1) for the rule in the Description field. 3. Select a host from the LAN Host drop-down list or choose “Add LAN Host”. 4. Select a target from the WAN Host drop-sown list or choose “Add WAN Host”. 5.
TD-8840T ADSL2+ Modem Router User Guide To add a new entry, please follow the steps below. 1. Click the Add New button. 2. In the Mode field, select IP Address or MAC Address. z If you select IP Address, please follow the steps below: 1) In Description field, create a unique description for the host (e.g. Host_1). 2) In IP Address field, enter the IP address. z If you select MAC Address, please follow the steps below: 1) In Description field, create a unique description for the host (e.g. Host_1).
TD-8840T ADSL2+ Modem Router User Guide If you select MAC Address, the screen shown is Figure 4-38. Figure 4-38 1) In Description field, create a unique description for the host (e.g. Host_1). 2) In MAC Address field, enter the MAC address. If you select URL Address, the screen shown is Figure 4-39. Figure 4-39 1) In Description field, create a unique description for the host (e.g. Host_1). 2) Enter the URL address in the Add URL Address field, and then click the Add button.
TD-8840T ADSL2+ Modem Router User Guide To add a new schedule, follow the steps below: 1. Click Add New button and the next screen will pop-up as shown in Figure 4-41. 2. In Description field, create a unique description for the schedule (e.g. Schedule_1). 3. In Apply To field, select the day or days you need. 4. In time field, you can select all day-24 hours or you may enter the Start Time and Stop Time in the corresponding field. 5. Click Save to complete the settings.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-42 ¾ DoS protection - Denial of Service protection. Check the Enable or Disable button to enable or disable the DoS protection function. Only when it is enabled, will the flood filters be enabled. ) Note: Dos Protection will take effect only when the Traffic Statistics in “System Tool → Traffic Statistics” is enabled. ¾ Enable ICMP-Flood Attack Filtering - Enable or Disable the ICMP-Flood Attack Filtering.
TD-8840T ADSL2+ Modem Router User Guide 4.10 Bandwidth Control Choose menu “Bandwidth Control”, and then you can configure the Upstream Bandwidth and Downstream Bandwidth in the next screen. The values you configure should be less than 100000Kbps. For optimal control of the bandwidth, please select the right Line Type and ask your ISP for the total bandwidth of the egress and ingress. Figure 4-43 ¾ Enable Bandwidth Control: Check this box so that the Bandwidth Control settings can take effect.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-44 3. Click the Save button. 4.11 IP&MAC Binding There are two submenus under the IP &MAC Binding menu: Binding Settings and ARP List. Click any of them, and you will be able to scan or configure the corresponding function. The detailed explanations for each submenu are provided below. 4.11.1 Binding Settings This page displays the IP & MAC Binding Setting table; you can operate it in accord with your desire (shown in Figure 4-45).
TD-8840T ADSL2+ Modem Router User Guide When you want to add or modify an IP & MAC Binding entry, you can click the Add New button or Edit button, and then you will go to the next page. This page is used for adding or modifying an IP & MAC Binding entry (shown in Figure 4-46). Figure 4-46 To add IP & MAC Binding entries, follow the steps below. 1. Click the Add New button as shown in Figure 4-45. 2. Enter the MAC Address and IP Address. 3. Select the Bind checkbox. 4.
TD-8840T ADSL2+ Modem Router User Guide ¾ Load: Load the item to the IP & MAC Binding list. Click the Load Selected button to load selected items to the IP & MAC Binding list. Click the Refresh button to refresh all items. 4.12 Dynamic DNS Choose menu “Dynamic DNS”, and you can configure the Dynamic DNS function.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-49 4.14 System Tools Choose menu “System Tools”, and you can see the submenus under the main menu: System Log, Time Settings, Manage Control, CWMP Settings, SNMP Settings, Backup & Restore, Factory Defaults, Firmware Upgrade, Reboot and Statistics. Click any of them, and you will be able to configure the corresponding function. The detailed explanations for each submenu are provided below. 4.14.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-50 ¾ Log Type: By selecting the log type, only logs of this type will be shown. ¾ Log Level: By selecting the log level, only logs of this level will be shown. ¾ Refresh: Refresh the page to show the latest log list. ¾ Clear Log: All the logs will be deleted from the Modem Router permanently, not just from the page. ¾ Save Log: Click to save all the logs in a txt file. ¾ Log Settings: Click to set the logs in the screen (shown in Figure 4-51).
TD-8840T ADSL2+ Modem Router User Guide Figure 4-52 ¾ Time Zone: Select your local time zone from this pull down list. ¾ Date: Enter your local date in MM/DD/YY into the right blanks. ¾ Time: Enter your local time in HH/MM/SS into the right blanks. ¾ NTP Server 1 / NTP Server 2: Enter the address or domain of the NTP Server 1 or NTP Server 2, and then the Modem Router will get the time from the NTP Server preferentially.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-53 ¾ Current User Status: This box displays the information about User Type, User Name, Host IP Address and Host MAC Address. ¾ Account Management: Here you can set the account user information about Old Password, New User Name, New Password and Confirm Password. ¾ Service Configuration: Here you can modify the port of the Modem Router’s web management interface and limit the hosts which can login this Modem Router’s web management interface. 4.14.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-54 ¾ CWMP: Select enable the CWMP function. ¾ Inform: Enable or disable the function. If enabled, the information will be informed to ACS server periodically. ¾ Inform Interval: Enter the interval time here. ¾ ACS URL: Enter the website of ACS which is provided by your ISP. ¾ ACS User Name/Password: Enter the User Name and password to login the ACS server. ¾ Interface used by TR-069 client: Select the interface used by TR-069 client.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-55 An SNMP Agent is an application running on the Modem Router that performs the operational role of receiving and processing SNMP messages, sending responses to the SNMP manager, and sending traps when an event occurs. So a router contains SNMP "agent" software can be monitored and/or controlled by SNMP Manager using SNMP messages. 4.14.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-57 Click the Restore button to reset all configuration settings to their default values. • The default User Name: admin • The default Password: admin • The default Subnet Mask: 255.255.255.0 ) Note: All changed settings will be lost when defaults are restored. 4.14.8 Firmware Upgrade Choose menu “System Tools → Firmware Upgrade”, and then you can update the latest version of firmware for the Modem Router on the following screen.
TD-8840T ADSL2+ Modem Router User Guide There is no need to upgrade the firmware unless the new firmware has a new feature you want to use. However, when experiencing problems caused by the Modem Router rather than the configuration, you can try to upgrade the firmware. 2) When you upgrade the Modem Router's firmware, you may lose its current configurations, so before upgrading the firmware please write down some of your customized settings to avoid losing important settings.
TD-8840T ADSL2+ Modem Router User Guide Figure 4-60 ¾ Statistics Status: Enable or Disable. The default value is disabled. To enable it, click the Enable. If it is disabled, the function of DoS protection in Security settings will be disabled. ¾ Statistics Interval (5-60): The default value is 10. Select a value between 5 and 60 seconds in the drop-down list. The Packets Statistic interval indicates the time section of the packets statistic.
TD-8840T 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.
TD-8840T ADSL2+ Modem Router User Guide Appendix B: Troubleshooting T1. How do I restore my Modem Router’s configuration to its factory default settings? With the Modem Router powered on, press and hold the RESET button on the rear panel for 8 to 10 seconds before releasing it. ) Note: Once the Modem Router is reset, the current configuration settings will be lost and you will need to re-configure the router. T2.
TD-8840T ADSL2+ Modem Router User Guide Right-click Local Area Connection Click Properties Double-click Internet Protocol (TCP/IP) 63
TD-8840T ADSL2+ Modem Router User Guide Select Obtain an IP address automatically Select Obtain DNS server address automatically Click OK Click OK 64
TD-8840T ADSL2+ Modem Router User Guide For Windows Vista OS Go to Start > Settings >Control Panel, and then you will see the following page.
TD-8840T 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 66
TD-8840T ADSL2+ Modem Router User Guide For Windows 7 OS Go to Start > Settings > Control Panel, and then you will see the following page.
TD-8840T 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 68
TD-8840T 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 Now, try to log on to the Web-based configuration page again after the above settings have been configured. If you still cannot access the configuration page, please restore your Modem Router’s factory default settings and reconfigure your Modem Router following the instructions in 4.1 Login.
TD-8840T ADSL2+ Modem Router User Guide 3) Consult your ISP and make sure all the VPI/VCI, Connection Type, account username and password are correct. If there are any mistakes, please correct the settings and try again. 4) If you still cannot access the Internet, please restore your Modem Router to its factory default settings and reconfigure your Modem Router by following the instructions in 4.1 Login. 5) Please feel free to contact our Technical Support if the problem still exists.
TD-8840T 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.com Service time: 24hrs, 7 days a week UK Tel: +44 (0) 845 147 0017 E-mail: support.uk@tp-link.
