TRENDnet TDM-C400 User Manual
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TRENDnet TDM-C400 User Manual

TRENDnet TDM-C400 User Manual

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  • Page 2: Part

    In addition to the careful attention devoted to quality standards on the manufacture of your ADSL2+ Ethernet Modem Router, safety is a major factor in the design of every product. However, safety is your responsibility, too. This section lists important information that will help assure your enjoyment and proper use of the ADSL2+ Ethernet Modem Router and accessory equipment.
  • Page 3 Keep Objects Out of Openings – Never push objects of any kind into this product through openings, as they may touch dangerous voltage or “short-out” parts, which could result in a fire or electric shock. Never spill liquid on the product. Protect From Lightning –...

  • Page 5: Table Of Contents

    About this User’s Manual... 13 Using this Document...14 Notational conventions ...14 Typographical conventions...14 Special messages...14 About Part 1 ... 16 Getting to Know the TDM-400 / TDM-C400 Ethernet Modem Router ...17 Features ...17 System Requirements ...17 Parts Check...18 Getting Support...18 Quick Start...19...
  • Page 6 TDM-E400 / TDM-C400 ADSL Modem Router User’s Manual Part 2 Interfaces and Operating Modes Quick Start Part 3 — Configuring the Ethernet Modem Router...33 Logging in to the Ethernet Quick Configuration Page...33 Default Router Settings...35 Testing Your Setup ...37 Getting Started with the Web Configuration...38 Accessing the Web Configuration...38...
  • Page 7 Part 3 Routing and IP-Related Features About Part 3 ... 90 Viewing System IP Addresses and IP Performance Statistics ...91 Viewing the Ethernet Modem Router ’s IP Addresses...91 Viewing IP Performance Statistics ...92 Configuring Dynamic Host Configuration Protocol ...93 Overview of DHCP...93 What is DHCP?...93...
  • Page 8 TDM-E400 / TDM-C400 ADSL Modem Router User’s Manual Part 4 Security Features Configuring DHCP Server ...95 Guidelines for creating DHCP server address pools...95 Adding DHCP Server Address Pools...96 Viewing, modifying, and deleting address pools...98 Excluding IP addresses from a pool...99 Viewing current DHCP address assignments...99...
  • Page 9 Viewing Current NAT Translations...123 Adding NAT Rules ...125 The NAPT rule: Translating between private and public IP addresses...125 The RDR rule: Allowing external access to a LAN computer...127 The Basic rule: Performing 1:1 translations...130 The Filter rule: Configuring a Basic rule with additional criteria...131 The Bimap rule: Performing two-way translations...133...
  • Page 10 TDM-E400 / TDM-C400 ADSL Modem Router User’s Manual Managing Access to the Configuration Program ...161 Managing User Logins...161 Changing Login Passwords...163 Enabling Management through the WAN Port ...164 Configuring SNMP ...165 Creating Communities ...165 Adding Hosts to Communities...166 Viewing Hosts ...166 Viewing Global SNMP Statistics ...166...
  • Page 11 Network classes...186 Subnet masks ...186 Troubleshooting...188 Glossary...190 Index Table of Contents...

  • Page 13: About This User's Manual

    About this User’s Manual This User’s Manual shows you how to set up the Ethernet Modem Router and how to customize its configuration to meet the needs of your network and Internet connection type. This document is organized in five major parts, each containing several chapters: Part 1, “Getting Started,”...

  • Page 14: Using This Document

    TDM-E400 / TDM-C400 ADSL Modem Router User’s Manual Note Definition WARNING Using this Document Notational conventions Acronyms are defined the first time they appear in text and in the glossary (Appendix C). The Ethernet Modem Router is also referred to as the ADSL2+ Ethernet Modem Router or, for brevity, the device.

  • Page 15: Getting Started

    Part 1 Getting Started...

  • Page 16: About Part 1

    TDM-E400 / TDM-C400 ADSL Ethernet Modem Router User’s Manual About Part 1 Part 1 provides an overview of the Ethernet Modem Router’s features and basic setup and configuration instructions. All users are encouraged to follow these setup instructions when first installing the Ethernet Modem Router on a network.

  • Page 17: Getting To Know The Tdm-400 / Tdm-C400

    Getting to Know the TDM-400 / TDM-C400 Ethernet Modem Router Features System Requirements In order to use the Ethernet Modem Router, you must have the following: Internal ADSL2+ modem for high-speed Internet access 10/100Base-T Ethernet Modem Router to provide Internet...

  • Page 18: Parts Check

    TDM-E400 / TDM-C400 ADSL Ethernet Modem Router User’s Manual Parts Check In addition to this document, your Ethernet Modem Router should arrive with the following Bridge/Router RJ-45 Cable (straight-through” type) RJ-11 – Standard phone/DSL line cable USB Cable (for Ethernet/USB combo...

  • Page 19: Quick Start

    Quick Start This Quick Start provides basic instructions for connecting the Ethernet Modem Router to a computer or LAN and to the Internet. After setting up and configuring the device, you can follow the instructions on page 37 to verify that it is working properly.

  • Page 20: Step 1. Connect The Adsl Cable And Optional Telephone

    TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual Figure 1. Overview of Hardware Connections Step 1. Connect the ADSL cable and optional telephone. Connect one end of the provided phone cable to the port labeled DSL on the rear panel of the device. Connect the other end to your wall phone jack.

  • Page 21: Step 4. Attach The Power Connector

    Chapter 2. Quick Start Step 4. Attach the power connector. Connect the AC power adapter to the Power connector on the back of the device and plug in the adapter to a wall outlet or power strip. Turn on and boot up your computer(s) and any connected LAN devices such as hubs or switches.

  • Page 22: Quick Start Part 2 - Configuring Your Computers

    TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual In some cases, you may want to assign Internet information manually to some or all of your computers rather than allow the Ethernet Modem Router to do so. See “Assigning static Internet Note information to your PCs”...

  • Page 23: Windows 2000 Pcs

    7. If prompted, click the new settings. Next, configure the PCs to accept IP information assigned by the Ethernet Modem Router : 8. In the Control Panel, double-click the Network and Dial-up Connections icon. 9. In Network and Dial-up Connections window, right-click the Local Area Connection icon, and then select Properties.

  • Page 24: Windows Me Pcs

    TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual Windows Me PCs 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 Connections window, right-click the Network icon, and then select Properties.

  • Page 25: Windows 95, 98 Pcs

    PC and complete the TCP/IP installation. Next, configure the PCs to accept IP information assigned by the Ethernet Modem Router : 8. Open the Control Panel window, and then click the Network icon. 9. Select the network component labeled TCP/IP, and then...

  • Page 26: Windows Nt 4.0 Workstations

    TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual Windows NT 4.0 workstations First, check for the IP protocol and, if necessary, install it: 1. In the Windows NT task bar, click the Start button, point to Settings, and then click Control Panel.

  • Page 27: Assigning Static Internet Information To Your Pcs

    Your PCs must have IP addresses that place them in the same subnet as the Ethernet Modem Router ’s LAN interface. If the IP addresses you manually assign to your LAN PCs are in a different subnet than the LAN interface, follow the instructions in Chapter 4 to Note change the LAN interface IP address as needed.

  • Page 28: Connecting A Computer To The Usb Port (For Ethernet/Usb Model Only)

    TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual Connecting a computer to the USB port (For Ethernet/USB model only) If you use the Ethernet Modem Router ’s USB port to connect to a PC, you must install the provided USB driver software on the PC.
  • Page 29 Chapter 2. Quick Start Figure 3. DSL Modem Setup Wizard—License Agreement Page 5. Review the terms of the license, and, if you agree to the terms, click The Installing window displays as the Wizard prepares your system for the installation: Figure 4.
  • Page 30 TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual Figure 5. USB Setup Wizard—Prompt for Hardware Plug In 6. Connect the USB cable to the ADSL2+ Ethernet Modem Router and to your computer. The provided USB cable provided has a flat connector on one end (called Type A) and a square connector on the other (Type B).
  • Page 31 USB PC. Now that the USB driver installation is complete, you must configure the USB PC so that its IP properties place it in the same subnet as the Ethernet Modem Router ’s USB port. There are two ways to do this: The Ethernet Modem Router is configured to assign an appropriate IP address to the USB PC.
  • Page 32 TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual...

  • Page 33: Quick Start Part 3 - Configuring The Ethernet Modem Router

    Quick Configuration page. Follow these instructions configure the device settings: 1. At any PC connected to the Ethernet Modem Router via Ethernet or USB, open your Web browser, and type the following URL in the address/location box: 192.168.1.254/MainPage?id=25...
  • Page 34 TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual The fields are described in the following table. Work with your ISP to determine which settings you need to change and refer to the indicated chapter for more information about each setting.

  • Page 35: Default Router Settings

    Note default values. Default Router Settings The Ethernet Modem Router can provide a variety of services to your network. The device is pre-configured with default settings for use with a typical home or small office network. Table 1 lists some of the most important default settings; these and other features are described fully in subsequent chapters.
  • Page 36 TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual Table 1. Default Settings Summary Option Default Properties LAN interfaces — connecting to your network Ethernet Static IP address: 192.168.1.254 Subnet mask: 255.255.255.0 DHCP server pool of addresses: 192.168.1.3 through 192.168.1.34 Static IP address: 192.168.1.2 Subnet mask: 255.255.255.0...

  • Page 37: Testing Your Setup

    Testing Your Setup The Quick Start process should enable any computer on your LAN to use the Ethernet Modem Router to access the Internet. To test the connection, turn on the device, wait about 30 seconds, and then verify that its LEDs are illuminated as described in Table 2.

  • Page 38: Getting Started With The Web Configuration

    Configuration. Accessing the Web Configuration The Web Configuration program is preinstalled into memory on the Ethernet Modem Router . To access the program, you need the following: You can access the program from any computer connected to the Ethernet Modem Router via the LAN or USB ports.
  • Page 39 Figure 9. Login Screen 2. Enter your user name and password, and then click The first time you log into the program, use these defaults: Default User Name: Default Password: You can change the password at any time (see Chapter 15 for instructions).

  • Page 40: Functional Layout

    TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual Functional Layout Web Configuration tasks are grouped into categories, which you can access by clicking the tabs at the top of each page. Each tab displays the available tasks in a horizontal menu at the top of the page.

  • Page 41: The Home Page And System View Table

    Table Heading Description Device Displays basic information about the Ethernet Modem Router hardware and software versions, the system uptime (since the last reboot), and the pre-configured operating mode. Displays the operational status, version, and performance statistics for the DSL line. You can...
  • Page 42 TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual Table Heading Description WAN Interfaces Displays the software name(s) and various settings for the device interface(s) that communicate with your ISP via DSL. Although you only have one physical DSL port, multiple software-defined interfaces can be configured to use it.

  • Page 43: Modifying Basic System Information

    You can modify the system date and time or configure the device to acquire this information from an ISP server. You can also assign a name to the Ethernet Modem Router and to the network domain in which it resides.
  • Page 44 TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual Figure 12. System - Modify Page 2. Modify the fields on this page as required. The following table describes each field: Option Description SNTP To enable SNTP, click the Enable radio button.

  • Page 45: Specifying The Tdm-E400 / Tdm-C400 Name And Network Domain Name

    Specifying the TDM-E400 / TDM-C400 Name and Network Domain Name You can specify an easy-to-remember name for the Ethernet Modem Router and a domain name for the network on which it resides. These are used only to simplify access to the Web Configuration program.

  • Page 46: Committing Changes And Rebooting

    TDM-E400 / TDM-C400 ADSL2+ Modem Router User’s Manual Committing Changes and Rebooting Definition Committing Changes Whenever you use Web Configuration to change system settings, the changes are initially placed in temporary storage called random access memory or RAM. Your changes are made effective when you submit them, but will be lost if the device is reset or turned off.

  • Page 47: Rebooting The Device Using Web Configuration

    Reboot from Backup Configuration setting to return to the previous settings. If the Ethernet Modem Router provides a Reconfigure button on the back panel (in addition to the power on/off button), do not use it to activate new changes. This button resets the device settings to WARNING the manufacturer’s default values.

  • Page 49: Interfaces And Operating Modes

    Part 2 Interfaces and Operating Modes...

  • Page 50: About Part 2

    TDM-E400 / TDM-C400Ethernet Modem Router User’s Manual Definitions About Part 2 Part 2 explains how to configure the Ethernet Modem Router’s interfaces to communicate with your LAN PC(s) and your ISP. Part 2 also describes the device’s operating modes and explains how to configure the interfaces to enable each mode.

  • Page 51: Configuring The Lan And Usb Interfaces

    Connecting Your PCs via Ethernet and/or USB If you are using the ADSL2+ Ethernet Modem Router with multiple PCs on your LAN, you must connect the LAN via an Ethernet hub or switch to the device's LAN port, also called the Ethernet port.

  • Page 52: Configuring The Lan (Ethernet) Interface

    TDM-E400 / TDM-C400 Ethernet Modem Router User’s Manual Note Note Configuring the LAN (Ethernet) Interface In order to use the device as a router on your LAN, Internet Protocol (IP) properties must be assigned to the LAN interface. These properties must identify the interface as residing in the same subnet as the PCs on your LAN.
  • Page 53 Note that the public IP address assigned to you by your ISP is not your LAN IP address. The public IP address identifies the WAN (ADSL) port on your ADSL/ADSL2+ Ethernet Modem Router to the Internet. (Or, in bridge configurations, it may be assigned to your PC.) LAN IP The IP address and network mask for the port.
  • Page 54 TDM-E400 / TDM-C400 Ethernet Modem Router User’s Manual Speed/Duplex Speed indicates the speed of the Ethernet communication between the ADSL2+ Ethernet Modem Router and the LAN PCs or hub. Duplex indicates the type of Ethernet communication (i.e., full duplex, or half-duplex).

  • Page 55: Configuring The Usb Interface Ip Address

    If you enabled the DHCP service, the ADSL/ADSL2+ Ethernet Modem Router will initiate a request for an IP address from your LAN's DHCP server. If a different IP address is assigned than was previously configured, your current connection will be terminated.
  • Page 56 TDM-E400 / TDM-C400 Ethernet Modem Router User’s Manual If you changed the USB interface IP address while working from the USB-attached computer, then the connection will be terminated. If you were using the Ethernet interface, a page will display to confirm your change and your connection will remain active.

  • Page 57: Configuring Wan Interfaces

    Configuring WAN Interfaces The Ethernet Modem Router’s WAN-side interfaces are used to communication via the DSL port. A WAN interface comprises two layers—a lower-level ATM VC interface and a higher-level protocol interface: The following section describes configuring the AMT interface properties.

  • Page 58: Configuring The Atm Vc

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Note Configuring the ATM VC The device is pre-configured with an ATM VC interface called aal5- 0. You may need to change the default VC values associated with the interface to values assigned by your ISP.

  • Page 59: Modifying Atm Vcs

    Modifying ATM VCs Your device may contain placeholder values that you must change to establish an ATM connection. Contact your ISP to determine your ATM VC values. Follow these instructions to modify a pre- configured VC: 1. From the ATM VC Configuration page, click Actions column for the interface you want to modify.

  • Page 60: Adding Atm Vcs

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Adding ATM VCs You can create an ATM VC interface if none has been predefined on your system or if you use multiple services with your ISP. Each service may require its own VC. Follow these instructions to add a 1.

  • Page 61: Configuring Ppp Interfaces

    Configuring PPP Interfaces The Point-to-Point Protocol (PPP) is one of several protocols used to enable communication between ISPs and their customers. PPP handles tasks such as the following: Identify the type of service the ISP should provide to a given customer Identify the customer to the ISP through a username and password login Enable the ISP to assign an Internet address and other IP...
  • Page 62 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual You can configure the following settings on the PPP Configuration page: Inactivity TimeOut...: The time in minutes that must elapse before a PPP connection times-out due to inactivity. This setting applies only to PPP interfaces that are configured as “start-on-data”...
  • Page 63 DHCP server. This option is useful only when the ADSL/ADSL2+ Ethernet Modem Router is configured to act as a DHCP server for your LAN. When set to Disable, LAN hosts will use the DNS address(es) specified in the DHCP pool (see “Configuring DHCP Server”...

  • Page 64: Viewing Ppp Interface Details

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Viewing PPP Interface Details When you click to view additional details, the PPP Interface - Detail page displays: Figure 19. PPP – Detail Page In addition to the properties defined on page 62, the Detail page...
  • Page 65 Field Description Last Fail Cause Indicates the action that ended the previous PPP session: No Valid PADO Recvd: The device initiated a PPoE handshake but did not receive a packet in reply from the ISP. No Valid PADS Recvd: After the initial handshake, the device did not receive a confirmation packet from the ISP.

  • Page 66: Adding A Ppp Interface

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Note Adding a PPP Interface Follow this procedure to add a PPP interface. If you need to use more than one PPP connection, you may be able to create multiple PPP interfaces. The number and type of...

  • Page 67: Configuring Eoa Interfaces

    Configuring EoA Interfaces The Ethernet-over-ATM (EoA) protocol is often referred to as RFC1483, which is the Internet specification that defines it. It is commonly used to carry data from an Ethernet-based local area network over the ATM-based wide area network. Unlike PPP, EoA can be implemented to provide a bridged connection between a DSL modem and the ISP.
  • Page 68 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual The following table describes the fields on this page: Field Description Interface The name the software uses to identify the EoA interface. Interface Sec Type The type of security protections in effect on the...

  • Page 69: Adding Eoa Interfaces

    Field Description Status A green or red ball will display to indicate that the interface is currently up or down, respectively. You cannot manually enable or disable the interface; a red ball may indicate a problem with the DSL connection or the connection to the ISPs access server.
  • Page 70 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual 7. If your ISP will assign the IP address from their DHCP server, click the Enable radio button in the Use DHCP field. When DHCP is enabled, the address you entered in the Conf.
  • Page 71 13. In the interface table, select all interface names on which you want to perform bridging and click To enable bridging with your ISP, select the EoA interface and the LAN interface(s) (eth-0 and/or usb-0). You can enable bridging on an IP-enabled EoA interface; in this case, the same interface will be capable of handling both bridged and routed data packets.

  • Page 72: Configuring Ipoa Interfaces

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Configuring IPoA Interfaces An IPoA interface can be used to exchange IP packets over the ATM network, without using an underlying Ethernet over ATM (EoA) connection. Typically, this type of interface is used only in product development and test environments, to eliminate unneeded variables when evaluating IP protocol processing.
  • Page 73 DHCP server, which may assign another address. The external IP address that the ADSL/ADSL2+ Gateway Address Ethernet Modem Router communicates with via the IPoA interface to gain access to the Internet. This is typically an ISP server. Status A green or red ball will display to indicate that the interface is currently up or down, respectively.

  • Page 74: Adding Ipoa Interfaces

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Adding IPoA Interfaces Follow these instructions to add an IPoA interface: 1. Display the IPoA page and click The IPoA Interface – Add page displays: Figure 26. IPoA Interface – Add Page 2.
  • Page 75 9. Click A confirmation page will display to confirm your changes. 10. Click to return to the IPoA page and view the new interface in the table. IPoA interfaces must be mapped to a lower ATM VC interface before they can be used. Follow these instructions to map and IPoA interface to an ATM VC: 11.

  • Page 76: Configuring The System Operating Modes

    Configuring the System Operating Modes The Ethernet Modem Router can operate as a router, a bridge, or both. The system operating mode is determined by how you configure the LAN and WAN interfaces to exchange data within your network and with your ISP. This chapter provides an overview...

  • Page 77: How Routers Work

    (or by an administrator or an automated mechanism called DHCP). Within a group of networked computers, a router can associate each PC’s assigned IP address with its MAC address. When a PC initiates communication through the router outside the network, the router sends out IP packets to the Internet on behalf of the PC, revealing only the PC’s IP address.

  • Page 78: Overview Of System Operating Modes

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Overview of System Operating Modes The Ethernet Modem Router can operate in Bridging mode, Routing mode, or Routing and Bridging mode. You can view the currently configured mode in the System View table on the Home page, as shown in Figure 29.

  • Page 79: Configuring Routable And Bridgeable Interfaces

    Configuring Routable and Bridgeable Interfaces Making Interfaces Routable (IP-Enabled) A routable or IP-enabled interface is simply one that has been assigned an IP address. IP-enabled interfaces are capable of forwarding IP packets. You can assign IP addresses to any LAN or WAN interface.

  • Page 80: Enabling Bridging Mode

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual 2. In the interface table, select all interface names on which you want to perform bridging and click To enable bridging with your ISP, select the LAN interface (eth-0 and/or usb-0) and the EoA interface you created for the bridging path.

  • Page 81: Common Scenarios

    For either type of WAN interface, the Default Gateway check box is normally selected. Each PC’s IP properties specify the ADSL/Ethernet Modem Router's LAN interface as its gateway IP address. The PCs may also be configured to obtain IP information automatically from a DHCP server.

  • Page 82: Scenario 2: Bridged Connection To Isp

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Scenario 2: Bridged Connection to ISP In this configuration, your ISP requires you to configure a bridged Internet connection. For a bridged internet connection, the WAN interface must be bridge-enabled. The configuration would have these features: A bridge-enabled EoA WAN interface.

  • Page 83: Scenario 3: Routed And Bridged Connections To Isp

    Chapter 6. Configuring the System Operating Modes Scenario 3: Routed and Bridged Connections to ISP In this configuration, the LAN is like that described in Scenario 1, but also includes PCs that use a bridged Internet connection. You would then need to establish bridging services in addition to routing. This would also be necessary if the LAN contains PCs that use non- IP networking protocols, such has AppleTalk or IPX.

  • Page 84: Configuring Special Bridging Features

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Configuring Special Bridging Features Configuring WAN-to-WAN Bridging WAN-to-WAN bridging refers to the bridging of data between WAN interfaces. This can occur only when bridging is enabled on the device and it has two or more WAN interfaces. With WAN-to-WAN...

  • Page 85: Configuring Bridge/Router Autosense (Bras) Mode

    Configuring Bridge/Router AutoSense (BRAS) Mode In Bridge-Router AutoSense (BRAS) mode, the Ethernet Modem Router chooses at startup whether to operate in Routing and Bridging mode or in Bridging-only mode, based on information it learns while communicating with the LAN PCs. This capability allows units to be delivered to customers with one preconfiguration for both deployment types.

  • Page 86: Configuring Zipb Mode

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Note Note Configuring ZIPB Mode The Ethernet Modem Router offers a special type of bridging mode called ZIPB (Zero Installation PPP Bridge) mode. This mode enables the ISP to simplify the installation process for customers who will be using the device as a bridge.
  • Page 87 Chapter 6. Configuring the System Operating Modes 8. Click A page displays briefly to confirm the change, and the System Mode page redisplays. 9. If you want the changes to be permanent, follow the instructions on page 46 to commit them.

  • Page 89: Routing And Ip-Related Features

    Part 3 Routing and IP-Related Features...

  • Page 90: About Part 3

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual About Part 3 Part 3 explains how to view information relating to Internet Protocol processing, and describes configuring the Ethernet Modem Router’s IP routing features. Part 3 contains the following chapters: Chapter 7, “Viewing System IP Addresses and IP...

  • Page 91: Viewing System Ip Addresses And Ip Performance Statistics

    See Appendix A for a description of IP addresses and masks. Viewing the Ethernet Modem Router ’s IP Addresses To view the Ethernet Modem Router ’s IP addresses, click the Routing tab, and then click Table page displays: Figure 32.

  • Page 92: Viewing Ip Performance Statistics

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual If your device has additional IP-enabled interfaces, the IP addresses of these will also display. Viewing IP Performance Statistics You can view statistics on the processing of Internet protocol packets (a packet is a collection of data that has been bundled for transmission).

  • Page 93: Configuring Dynamic Host Configuration Protocol

    When you enable DHCP on a network, you allow a device — such as the Ethernet Modem Router or a router located with your ISP — to assign temporary IP addresses to your computers whenever they connect to your network.

  • Page 94: Ethernet Modem Router Dhcp Modes

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Note Ethernet Modem Router DHCP modes The device can be configured as a DHCP server, relay agent or client. If you configure the device as a DHCP server, it will maintain the pool of addresses and distribute them to your LAN computers.

  • Page 95: Configuring Dhcp Server

    Chapter 8. Configuring Dynamic Host Configuration Protocol Configuring DHCP Server Before you begin, be sure to configure your PCs to accept DHCP information assigned by a DHCP server. See “Quick Start Part 2 Note — Configuring Your Computers,” for instructions. To set up DHCP server, you first define the ranges of IP addresses that you want to be distributed to your PCs, called DHCP server address pools.

  • Page 96: Adding Dhcp Server Address Pools

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual The DHCP server distributes addresses to computers connected to one of its interfaces only when that interface is in the same subnet as the pool addresses. In the examples shown above, the IP addresses in pool 0 would be assigned only over the Ethernet and USB interfaces.
  • Page 97 Chapter 8. Configuring Dynamic Host Configuration Protocol 3. Enter values for the Start IP Address, End IP Address, and Net Mask fields, which are required, and any others as needed: Field Description Start/End IP Specifies the lowest and highest addresses in Addresses the pool, up to a maximum range of 254 addresses.

  • Page 98: Viewing, Modifying, And Deleting Address Pools

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual 4. When you are done defining the pool, click A confirmation page displays briefly to indicate that the pool has been added successfully. After a few seconds, the DHCP Server Pool – Add page displays with the newly added pool.

  • Page 99: Excluding Ip Addresses From A Pool

    (see page 46). Viewing current DHCP address assignments When the Ethernet Modem Router functions as a DHCP server for your LAN, it keeps a record of any addresses currently leased to your computers. To view a table of all current IP address...

  • Page 100: Configuring Dhcp Relay

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Configuring DHCP Relay Some ISPs perform the DHCP server function for their customers’ home/small office networks. In this case, you can configure the device as a DHCP relay agent. When a computer on your network...

  • Page 101: Setting The Dhcp Mode

    Chapter 8. Configuring Dynamic Host Configuration Protocol 5. Click A page displays to confirm your changes, and the program returns to the DHCP Relay Configuration page. 6. Follow the instructions in “Setting the DHCP Mode” to set the DHCP mode to DHCP Relay. Setting the DHCP Mode You must enable the appropriate DHCP mode to activate your DHCP relay or DHCP server settings.

  • Page 103: Configuring Dns Server Addresses

    Dynamically from a DHCP pool: You can configure the DHCP Server feature on the ADSL2+ Ethernet Modem Router and create an address pool that specifies the DNS addresses to be distributed to the PCs. Refer to “Configuring DHCP Server,” on page 95 for instructions on...

  • Page 104: Configuring Dns Relay

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Configuring DNS Relay When you specify the Ethernet Modem Router 's LAN interface IP address as the DNS address, then the device automatically performs “DNS relay”; i.e., because the device itself is not a DNS server, it forwards domain name lookup requests it receives from the LAN PCs to a DNS server at the ISP.
  • Page 105 Click the Services tab, and then click DNS in the task bar. The DNS Configuration page displays. Figure 40. DNS Configuration Page Type the IP address of the DNS server in an empty row and click You can enter up to two addresses. Click the DNS Relay Poll Status check box if you want the software to send regular test messages to the DNS servers to ensure that they remain up (recommended).

  • Page 106: Configuring Ip Routes

    IP address of the destination computer (the “phone number”). All your outgoing requests first go to the same router at your ISP (the first “switchboard”). That router looks at the network ID portion of the destination address (the “area code”) and determines which next...

  • Page 107: Hops And Gateways

    Configuring Your Computers.”) On the Ethernet Modem Router itself, a default gateway is defined to direct all outbound Internet traffic to a router at your ISP. This default gateway is assigned automatically by your ISP whenever the device negotiates an Internet connection.

  • Page 108: Viewing The Ip Routing Table

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Viewing the IP Routing Table All IP-enabled computers and routers maintain a table of IP addresses that are commonly accessed by their users. For each of these destination IP addresses, the table lists the IP address of the first hop the data should take.
  • Page 109 Indicates whether the route is direct or indirect. In a Route Type direct route, the source and destination computers are on the same network, and the router attempts to directly deliver the data to the computer. In an indirect route, the source and destination computers are on different networks, and the router forwards data to a device on another network for further handling.

  • Page 110: Adding Ip Routes

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Adding IP Routes Follow these instructions to add an IP route to the routing table. 1. From the IP Route Table page, click The IP Route – Add page displays: Figure 42. IP Route – Add Page 2.

  • Page 111: Configuring The Routing Information Protocol

    Routing devices communicate this information using a variety of IP protocols. This chapter describes how to configure the Ethernet Modem Router to use one of these, called the Routing Information Protocol (RIP). RIP Overview RIP is an Internet protocol you can set up to share routing table information with other routing devices on your LAN, at your ISP’s...

  • Page 112: Configuring The.ethernet Modem Router 'S Interfaces With Rip

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Note Configuring the Ethernet Modem Router ’s Interfaces with RIP The following instructions describe how to enable RIP on the Ethernet Modem Router . In order for the Ethernet Modem Router to communicate with other devices using RIP, you must also enable the other devices to use the protocol.
  • Page 113 The Receive Mode setting indicates the RIP version(s) in which information must be passed to the Ethernet Modem Router in order for it to be accepted into its routing table.

  • Page 114: Viewing Rip Statistics

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Viewing RIP Statistics From the RIP Configuration page, you can click to view statistics on attempts to send and receive route table data over RIP-enabled interfaces on the Ethernet Modem Router.

  • Page 115: Security Features

    Part 4 Security Features...

  • Page 116: About Part 4

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual About Part 4 Part 4 describes features you can configure to provide security to your network. Part 4 contains the following chapters: Chapter 12, “Configuring Network Address Translation,” explains how NAT works to allow one public Internet address to be shared among multiple PCs on your LAN.

  • Page 117: Configuring Network Address Translation

    IP addresses for dynamic assignment to your computers, as described in Chapter 8.) On the Ethernet Modem Router , you set up a NAT rule to specify that whenever one of your computers communicates with the Internet, (that is, it sends and receives IP data packets) its private IP address—which is...
  • Page 118 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual The NAT rule could further be defined to disguise the source port in the data packet (i.e., change it to another number), so that outside computers will not be able to determine the actual port from which the packet originated.

  • Page 119: Viewing Nat Global Settings And Statistics

    Chapter 12. Configuring Network Address Translation Viewing NAT Global Settings and Statistics To view your NAT settings, log into Web Configuration, and click the Services tab. The NAT Configuration page displays by default: Figure 45. NAT Configuration Page The NAT Configuration page contains the following elements: The NAT Options drop-down list, which provides access to the NAT Configuration page and Global Information table (shown by default and in Figure 45), the NAT Rule...
  • Page 120 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Field Description TCP Idle Timeout (sec) When two computers communicate via the Internet, a TCP-based communication TCP Close Wait (sec) session is created between them to control TCP Def Timeout (sec) the exchange of data packets.
  • Page 121 Chapter 12. Configuring Network Address Translation Figure 46. NAT Rule Global Statistics Page The table provides basic information for each NAT rule you have set up. You can click to restart the accumulation of the statistics at their initial values.

  • Page 122: Viewing Nat Rules And Rule Statistics

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Viewing NAT Rules and Rule Statistics To view the NAT rules currently defined on your system, select NAT Rule Entry in the NAT Options drop-down list. The NAT Rule Configuration page displays: Figure 47.

  • Page 123: Viewing Current Nat Translations

    Chapter 12. Configuring Network Address Translation Viewing Current NAT Translations To view a list of NAT translations that have recently been performed and which remain in effect (for any of the defined rules), select NAT Translations from the NAT Options drop-down list. The NAT Translations page displays: Figure 49.
  • Page 124 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Figure 50. NAT Translation – Details Page In addition to the information displayed in the NAT Translations table, this table displays the following for the selected current translation sessions: Field Description...

  • Page 125: Adding Nat Rules

    Adding NAT Rules This section explains how to create rules for each NAT flavor. You cannot edit existing NAT rules. To change a rule setup, delete it and add a new rule with the new settings. Note rule: Translating between private and public IP NAPT addresses Follow these instructions to create a rule for translating the private...
  • Page 126 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual 4. Enter a Rule ID. The Rule ID determines the order in which rules are invoked (the lowest numbered rule is invoked first, and so on). If you define two or more rules that act on the same set of IP addresses, be sure to assign the Rule ID so that the higher priority rules are invoked first.

  • Page 127: The Rdr Rule: Allowing External Access To A Lan Computer

    IP address is translated to your public IP address in all incoming and outgoing data packets. Without an RDR rule (or Bimap rule described on page 133), the Ethernet Modem Router blocks attempts by external computers to access your LAN computers. Note...
  • Page 128 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Follow these instructions to add an RDR rule (see steps 1-4 under "The NAPT rule" on page 125 for specific instructions corresponding to steps 1 and 2 below): 1. Display the NAT Rule – Add Page, select RDR as the Rule Flavor, if necessary, and enter a Rule ID.
  • Page 129 Chapter 12. Configuring Network Address Translation A port ID identifies the specific function of the computer connected to it, and therefore can limit the types of data that pass to and from the computer. For example, Web (HTTP) servers are usually identified by port number 80; packets containing traffic destined for a Web server will contain this port ID.

  • Page 130: The Basic Rule: Performing 1:1 Translations

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual The Basic rule: Performing 1:1 translations The Basic flavor translates the private (LAN-side) IP address to a public (WAN-side) address, like NAPT rules. However, unlike NAPT rules, Basic rules do not also translate the port numbers in the packet header;...

  • Page 131: The Filter Rule: Configuring A Basic Rule With Additional Criteria

    Chapter 12. Configuring Network Address Translation 5. In the Global Address From and Global Address To fields, type the starting and ending addresses that identify the pool of public IP addresses that the private addresses should be translated to. Or, type the same address in both fields (if you also specified a single address in step 4).
  • Page 132 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual 3. Select a protocol to which this rule applies, or choose ANY. This selection specifies which type of Internet communication will be subject to this translation rule. You can select ANY if the rule applies to all data.

  • Page 133: The Bimap Rule: Performing Two-Way Translations

    Chapter 12. Configuring Network Address Translation The Bimap rule: Performing two-way translations Unlike the other NAT flavors, the Bimap flavor performs address translations in both the outgoing and incoming directions. In the incoming direction, when the specified interface receives a packet with your public IP address as the destination address, this address is translated to the private IP address of a computer on your LAN.

  • Page 134: The Pass Rule: Allowing Specific Addresses To Pass Through Untranslated

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual The Pass rule: Allowing specific addresses to pass through untranslated You can create a Pass rule to allow a range of IP addresses to remain untranslated when another rule would otherwise do so.

  • Page 135: Configuring Firewall Settings

    Configuring Firewall Settings Web Configuration provides built-in firewall functions, enabling you to protect the system against denial of service (DoS) attacks and other unwelcome or malicious accesses to your LAN. You can also specify how to monitor attempted attacks, and who should be automatically notified.
  • Page 136 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual 2. Configure the following settings as needed: Field Description Black List Status If you want the device to maintain a blacklist, click the Enable radio button. Click the Disable radio button if you do not want to maintain a list.
  • Page 137 Field Description Log Destination Specifies how attempted violations of the firewall settings will be tracked. Records of such events can be sent via Ethernet to be handled by a system utility (Trace) or can e-mailed to specified administrators. E-mail ID of Specifies the e-mail addresses of the Admin 1/2/3 administrators who should receive notices of any...

  • Page 138: Managing The Blacklist

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Managing the Blacklist If data packets are received that violate the firewall settings or any of the IP filter rules, then the source IP address of the offending packets can be blocked from such accesses for a specified period of time.

  • Page 139: Configuring Filters And Blocking Protocols

    The blocked protocols feature enables you to select from a predefined list the protocol that you want to block. All data passed to the ADSL/ADSL2+ Ethernet Modem Router using a blocked protocol will be discarded, without consideration of the source computer, destination...

  • Page 140: Configuring Ip Filters

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Configuring IP Filters When you define an IP filter rule and enable the feature, you instruct the Ethernet Modem Router to examine each data packet it receives to determine whether it meets criteria set forth in the rule.

  • Page 141: Configuring Ip Filter Global Settings

    Chapter 14. Configuring Filters and Blocking Protocols Configuring IP Filter Global Settings The IP Filter Configuration page enables you to configure the following global IP filter settings. Security Level: This setting determines which IP filter rules take effect, based on the security level specified in each rule.

  • Page 142: Creating Ip Filter Rules

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Creating IP Filter Rules To create an IP filter rule, you set various criteria that must be met in order for the rule to be invoked. Use these instructions to add a new IP filter rule.
  • Page 143 You can use rules that specify the incoming direction to restrict external computers from accessing your LAN. Interface The interface on the Ethernet Modem Router on which the rule will take effect. See the examples on page 147 for suggestions on choosing the appropriate interface for various rule types.
  • Page 144 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Field Black List Status Specifies whether or not a violation of this rule will result in the offending computer's IP address being added to the blacklist, which blocks the ADSL/ADSL2+ Ethernet Modem Router from forwarding packets from that source for a specified period of time.
  • Page 145 Chapter 14. Configuring Filters and Blocking Protocols Field Protocol The basic IP protocol criteria that must be met for rule to be invoked. Using the options in the drop-down list, you can specify that packets must contain the selected protocol (eq), that they must not contain the specified protocol (neq), or that the rule can be invoked regardless of the protocol (any).
  • Page 146 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Field ICMP Code Specifies whether the value in the code field in ICMP packet headers will be used as criteria. The code value can be any decimal value from 0-255. You can specify that the...

  • Page 147: Ip Filter Rule Examples

    Chapter 14. Configuring Filters and Blocking Protocols 3. When you are done selecting criteria, ensure that the Enable radio button is selected at the top of the page, and then click After a confirmation page displays, the IP Filter Configuration page will redisplay with the new rule showing in the table.

  • Page 148: Viewing Ip Filter Statistics

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Example 2. Blocking Telnet accesses to the Ethernet Modem Router : 1. Add a new rule for packets incoming on the ppp-0 interface. 2. Specify that the packet must contain the TCP protocol, and must be destined for port 23, the well-known port number used for the Telnet protocol.
  • Page 149 Chapter 14. Configuring Filters and Blocking Protocols Figure 62. IP Filter Sessions Page The IP Filter Session table displays the following fields for each current IP session: Field The ID assigned by the system to the IP session (all Session Index sessions, whether or not they are affected by an IP filter rule, are assigned a session index) Time to expire...

  • Page 150: Configuring Bridge Filters

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Note Configuring Bridge Filters Bridge filter rules can be created to control the forwarding of incoming and outgoing data between your LAN and the Internet and within your LAN. Bridge filter rules make decisions based on the structure of the "layer 2"...

  • Page 151: Adding Bridge Filter Rules

    Chapter 14. Configuring Filters and Blocking Protocols Field Enable/Disable You can click the Enable and Disable radio buttons to activate/deactivate the service. Although each rule can be independently enabled and disabled, no rules will be effective unless the Enable radio button is selected here.
  • Page 152 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual 2. Enter or select data for each field that applies to your rule, defined as follows: Field Rule ID Each rule must be assigned an ID number. Rules are processed from lowest to highest on each data packet, until a match is found.
  • Page 153 Chapter 14. Configuring Filters and Blocking Protocols Now, you can add subrules to specify criteria for the rule: 5. On the Bridge Filter Configuration page, click in the Action(s) column of the rule for which you want to created a subrule. The Bridge Filter Subrule - Add page displays: Figure 65.
  • Page 154 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Field Cmp. Type Comparison Type - The method for comparing the selected bits, after the mask is applied, to a reference value (or range of values) that you specify (see the next setting).

  • Page 155: Bridge Filter Rule Example

    Chapter 14. Configuring Filters and Blocking Protocols Filter Rule - Modify page, select the Enable radio button and click At least one subrule: On the Bridge Filter Configuration page, you can enable a subrule by editing it. Click Actions column in the row for the subrule. On the Bridge Filter Subrule - Modify page, select the Enable radio button and click If a rule is enabled but none of its subrules are enabled, then the...

  • Page 156: Editing And Deleting Rules And Subrules

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Editing and Deleting Rules and Subrules In the table on the Bridge Filter Rule page, the following items display in the Actions column for each rule and subrule: Button Description Edits the rule or subrule. The Bridge Filter Rule - Modify or Bridge Filter Subrule - Modify page displays.

  • Page 157: Blocking Protocols

    Blocking Protocols The Blocked Protocols feature enables you to prevent the ADSL2+ Ethernet Modem Router from passing any data that uses a particular protocol. Unlike the IP filter feature, you cannot specify additional criteria for blocked protocols, such as particular users or destinations.
  • Page 158 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Protocol IP Multicast IP Multicast is an extension to the IP protocol. It enables individual packets to be sent to multiple hosts on the Internet, and is often used for handling e-mail mailing lists and teleconferencing/videoconferencing.
  • Page 159 Part 5 Administrative Tasks and System Monitoring...

  • Page 160: About Part 5

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual About Part 5 Part 5 describes tools that LAN administrator can use to monitor the system performance and control access to the Web Configuration program. Part 5 contains the following chapters: Chapter 15, “Managing Access,”...

  • Page 161: Managing Access To The Configuration Program

    WAN port. Managing User Logins The Ethernet Modem Router is configured with a default user name and password combination, or login, for accessing Web Configuration. If you want to allow other users to access the program, you can create additional user logins and specify their privilege levels.
  • Page 162 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual 2. Click to display the User Config-Add page: Figure 68. User Config-Add Page 3. Type the User ID and Password in the text boxes provided, and then select the privilege level for this user, as described on 161.

  • Page 163: Changing Login Passwords

    Chapter 15. Managing Access to the Configuration Program Changing Login Passwords Users of all privilege levels can modify their own password. Only users with Root privileges can modify other users’ passwords. Follow these instructions to change a login password. This user ID and password are used only for logging into the Web Configuration;...

  • Page 164: Enabling Management Through The Wan Port

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Enabling Management through the WAN Port You can enable access to Web Configuration via the WAN port so that the ISP can perform configuration tasks. To enable WAN access, display the Management Control page by clicking Management Control in the Admin tab.

  • Page 165: Configuring Snmp

    Chapter 15. Managing Access to the Configuration Program Configuring SNMP The Simple Network Management Protocol (SNMP) enables a host computer to access configuration, performance, and other system data that resides in a database on the modem. The host computer is called a management station and the modem is called an SNMP agent.

  • Page 166: Adding Hosts To Communities

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual 3. From the Access column of the table, select the privileges (Read-Only or Read/Write) to assign to all hosts that are part of this community. 4. Click A page displays briefly to confirm your changes, and then the SNMP Configuration page redisplays with the new entry.

  • Page 167: Monitoring System Status And Performing Diagnostics

    Monitoring System Status and Performing Diagnostics This chapter shows you where to find information related to system events (alarms) and DSL line performance, and how to run a diagnostic program to troubleshoot problems. Viewing System Alarms You can use the Web Configuration to view information about alarms that occur in the system.

  • Page 168: Viewing The System Log

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Viewing the System Log You can view data generated or acquired by routine system communication with other devices, such as the results of negotiations with the ISP’s computers for DNS and gateway IP addresses.

  • Page 169: Viewing Dsl Information

    Chapter 16. Monitoring System Status and Performing Diagnostics Viewing DSL Information To view configuration parameters and performance statistics for the Ethernet Modem Router’s DSL line, log into Web Configuration, and then click the WAN tab. The DSL Status page displays by default: Figure 75. DSL Status Page The DSL Status page displays current information on the DSL line performance.
  • Page 170 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Figure 76. DSL Parameters Page The DSL Parameters and Status table displays settings preconfigured by the product manufacturer or your ISP. The Config Data table lists various types of error and defects measurements found on the DSL line.
  • Page 171 Chapter 16. Monitoring System Status and Performing Diagnostics The DSL Statistics page reports error data relating to the last 15- minute interval, the current day, and the previous day. At the bottom of the page, the Detailed Interval Statistic table displays links you can click on to display detailed data for each 15- minute interval in the past 24 hours.

  • Page 172: Using Diagnostics

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Using Diagnostics The diagnostics feature executes a series of test of your system software and hardware connections. Use this feature when working with your ISP to troubleshoot problems. Running the Diagnostics Program Follow these instructions to begin the diagnostics program: 1.

  • Page 173: Using The Ping Utility

    Chapter 16. Monitoring System Status and Performing Diagnostics Using the Ping Utility Ping is a command you can use to check whether your PC can recognize other computers on your network and the Internet. A ping command sends a message to the computer you specify. If the computer receives the message, it sends messages in reply.

  • Page 174: Using The Traceroute Utility

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Using the Traceroute Utility You can use the traceroute utility to view the IP addresses of all the hops that an IP packet makes from the Ethernet Modem Router on its way to an Internet destination. You can use the results of a traceroute to determine where a delay or transmission error is occurring.
  • Page 175 Chapter 16. Monitoring System Status and Performing Diagnostics Figure 81. Diagnostics Page - Traceroute 2. Click either the Destination IP Address or Dest Hostname radio button, and then type the appropriate data in the corresponding text box. The destination host name must be in the form of a fully qualified domain name, such as yahoo.com.
  • Page 176 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Field Destination UDP port When the Probe Message Type is specified as UDP, the traceroute commands includes an invalid destination UDP port address in the UDP packets. When a packet reaches the destination, it is dropped and the computer replies with an error message.

  • Page 177: Upgrading The Software And Storing And Restoring The Configuration Data

    Upgrading the Software and Storing and Restoring the Configuration Data All system software is contained in a single file, called an image. The image is stored in system flash memory and contains the operating system, device drivers, application code, and configuration data.

  • Page 178: Uploading An Image Stored Remotely

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Note 4. Select the file, and then click The following message box displays at the bottom of the page: Loading New Software Please do not interrupt the upgrade process. A status page will appear automatically when loading is completed (about 1 minute).

  • Page 179: Storing And Restoring Configuration Settings

    Web Configuration. Storing and Restoring Configuration Settings Many of the Ethernet Modem Router’s software features, such as those documented in this User’s Manual, can be configured in various ways to address your needs or your ISP’s requirements.
  • Page 180 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual To save the current configuration, click A Windows dialog box will display to enable you to choose where to save the file. The file is named commitedcfg.cfg and can be opened with any text editor.

  • Page 181: Modifying Port Settings

    IP address) as the destination. However, depending on the port number contained in a data packets, the ADSL2+ Ethernet Modem Router may pass the packet on to its embedded Web or Telnet servers, or to another computer on the network.
  • Page 182 TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual attempt to your LAN HTTP server rather than to the HTTP server on the Ethernet Modem Router . Thereafter, when your ISP wants to log on to your Web Configuration, they would type your IP address in their...

  • Page 183: Configuring Autodetect

    Autodetect searches for these interfaces in the order stated. Depending on the interface detected, Autodetect creates a PPP, an EoA, or an IPoA interface on the modem. In this mode, the modem is expected to be configured as a router.

  • Page 184: Configuring Autodetect

    TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual Configuring Autodetect Follow these steps to configure Autodetect: 1. Log into Web Configuration, click the Admin tab and then Autodetect click to display the Autodetect page: Figure 86. Autodetect Page 2. Select the appropriate Autodetect mode of operation, as described in the previous section, from the Autodetect Mode drop-down list.

  • Page 185: Ip Addresses, Network Masks, And Subnets

    IP Addresses, Network Masks, and Subnets IP Addresses This section pertains only to IP addresses for IPv4 (version 4 of the Internet Protocol). IPv6 addresses are not covered. Note IP addresses, the Internet's version of telephone numbers, are used to identify individual nodes (computers or devices) on the Internet. Every IP address contains four numbers, each from 0 to 255 and separated by dots (periods), e.g.

  • Page 186: Network Classes

    TDM-E400 / TDM-C400ADSL2+ Ethernet Modem Router User’s Manual Definition mask Network classes The three commonly used network classes are A, B, and C. (There is also a class D but it has a special use beyond the scope of this discussion.) These classes have different uses and characteristics.
  • Page 187 uses the remaining 7 bits in field4 for its host IDs, which range from 0 to 127 (instead of the usual 0 to 255 for a class C address). Similarly, to split a class C network into four subnets, the mask is: 255.255.255.192 or 11111111.

  • Page 188: Troubleshooting

    Troubleshooting This appendix suggests solutions for problems you may encounter in installing or using the Ethernet Modem Router , and provides instructions for using several IP utilities to diagnose problems. Contact Customer Support if these suggestions do not resolve the problem.
  • Page 189 ISP that the address configured on the Ethernet Modem Router is correct, then You can use the ping utility, described on page 173, to test connectivity with your ISP’s DNS server.

  • Page 190: Glossary

    Glossary 10BASE-T A designation for the type of wiring used by Ethernet networks with a data rate of 10 Mbps. Also known as Category 3 (CAT 3) wiring. See also data rate, Ethernet. 100BASE-T A designation for the type of wiring used by Ethernet networks with a data rate of 100 Mbps.
  • Page 191 The Ethernet Modem Router can perform both routing and bridging. Typically, when both functions are enabled, the device routes IP data and bridges all other types of data. See also routing.
  • Page 192 When you send data through the Internet, it is sent first from your computer to a router, and then from one router to another until it finally reaches a router that is directly connected to the recipient.
  • Page 193 A service performed by many routers that translates your network’s publicly known IP address into a private IP address for each computer on your LAN. Only your router and your LAN know these addresses; the outside world sees only the public IP address when talking to a computer on your LAN.
  • Page 194 A physical access point to a device such as a computer or router, through which data flows into and out of the device. Point-to-Point Protocol A protocol for serial data transmission that is used to carry IP (and other protocol) data between your ISP and your computer.
  • Page 195 Time To Live A field in an IP packet that limits the life span of that packet. Originally meant as a time duration, the TTL is usually represented instead as a maximum hop count; each router that Appendix C. Glossary...
  • Page 196 Universal Serial Bus A serial interface that lets you connect devices such as printers, scanners, etc. to your computer by simply plugging them in. The Ethernet/USB combo router is equipped with a USB interface for connecting to a stand-alone PC. Virtual Circuit A connection from your ADSL2+ Ethernet Modem Router to your ISP.

  • Page 197: Index

    Bridge Filter Rule page, 151 Bridge Filter Subrule page, 153 Bridge filters, 150 Bridge forwarding table, 76 Bridgeable interfaces, 79, 82, 83, 85 Bridged Internet connection, configuring, 82 Bridge-Router AutoSense (BRAS), 85 Bridges overview, 76 Bridging, 191 special features, 84 Broadband, 191 Broadcast, 191 Commit &...
  • Page 198 TDM-E400 / TDM-C400ADSL2+ Ethernet Modem Router User’s Manual defined, 93 modifying, viewing pools, 99 pools, 93 using a LAN device as, 94 using existing on LAN, 52 using ISP as, 94 viewing assigned addresses, 99 DHCP Server Pool - Modify page, 98 DHCP Server Pool—Add page, 96...
  • Page 199 IP address in device's routing table, 108 IP address pools modifying, 99 IP Address Table page, 91 IP addresses, 193 explained, 185 viewing device's, 91 IP configuration static, 27 static IP addresses, 27 Windows 2000, 23 Windows 95/98, 25 Windows Me, 24 Windows NT 4.0, 26 IP Configuration Windows XP, 22...
  • Page 200 TDM-E400 / TDM-C400ADSL2+ Ethernet Modem Router User’s Manual NAT, 193 adding rules, 125 BASIC flavor, 130 BIMAP flavor, 133 default configuration, 118 defined, 117 Filter flavor, 131 global settings, 119 NAPT flavor, 125 PASS flavor, 134 RDR flavor, 127 viewing performance statistics, 122...
  • Page 201 Firewall Configuration, 135 Home (System View), 41 Image Upgrade, 161 IP Address Table, 91 IP Filter Configuration, 140 IP Filter Rule - Add, 142 IP Filter Rule - Statistics, 148 IP Filter Sessions, 149 IP Global Statistics, 92 IP Route - Add, 110 IP Route Table, 108 IPoA, 72 IPoA Interface, 74...
  • Page 202 TDM-E400 / TDM-C400ADSL2+ Ethernet Modem Router User’s Manual Quick Configuration logging in, 33 Quick Configuration page, 33 RDR NAT flavor, 127 Rebooting, 47 Remote Image Upgrade page, 178 Reset button, 47 Restoring an image, 179 RFC 1577 (IPoA), 72 RIP, 194...
  • Page 203 default, 39 VC, 196 VCI, 196 VPI, 196 WAN, 196 WAN interface configuring multiple, 92 IP address, 91 WAN-to-WAN bridging, configuring, 84 Web browser requirements, 17 Web browser requirements, 38 Web browsers compatible versions, 38 Windows NT configuring IP information, 26 ZIPB mode, configuring, 86 Index...

  • Page 204: Limited Warranty

    ADSL Modem Router - 5 years If a product does not operate as warranted above during the applicable warranty period, TRENDnet shall, at its option and expense, repair the defective product or deliver to customer an equivalent product to replace the defective item.
  • Page 205 Index...

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