1. Manuals
  2. Brands
  3. NETGEAR Manuals
  4. Modem
  5. DG814 - DSL Modem Internet Gateway
  6. Reference manual

NETGEAR DG814 Reference Manual

Dsl modem internet gateway
Hide thumbs Also See for DG814:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Reference Manual, Installation Manual
Reference Manual for the
Model DG814 DSL
Modem Internet Gateway
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
SM-DG814UK-0
April 2002

Advertisement

Table of Contents
loading

Related Manuals for NETGEAR DG814

Summary of Contents for NETGEAR DG814

  • Page 1 Reference Manual for the Model DG814 DSL Modem Internet Gateway NETGEAR, Inc. 4500 Great America Parkway Santa Clara, CA 95054 USA SM-DG814UK-0 April 2002...
  • Page 2 In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes to the products described in this document without notice. NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit layout(s) described herein.

  • Page 3: Customer Support

    Certificate of the Manufacturer/Importer It is hereby certified that the Model DG814 DSL Modem Internet Gateway has been suppressed in accordance with the conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example, test transmitters) in accordance with the regulations may, however, be subject to certain restrictions.

  • Page 5: Table Of Contents

    Contents About This Guide Technical Support ......................xiii Related Publications ......................xiii Typographical Conventions ..................... xv Special Message Formats ....................xv Chapter 1 Introduction About the Router ......................1-1 Key Features ........................1-1 Security ........................1-2 Content Filtering .......................1-3 Autosensing 10/100 Ethernet ...................1-3 TCP/IP ........................1-4 Easy Installation and Management ................1-4 Maintenance and Support ..................1-5 Chapter 2...
  • Page 6 Verifying Power ......................2-7 Chapter 3 Preparing Your Network Preparing Your Personal Computers for IP Networking ..........3-1 Configuring Windows 95, 98 and ME for IP Networking ..........3-2 Install or Verify Windows Networking Components ..........3-2 Assign TCP/IP configuration by DHCP ..............3-4 Selecting Internet Access Method ................3-4 Verifying TCP/IP Properties (Windows) ..............3-5 Configuring Windows NT or 2000 for IP Networking ............3-5 Install or Verify Windows Networking Components ..........3-5...
  • Page 7 Dynamic DNS ......................5-2 Password .........................5-2 LAN Setup ........................5-3 DHCP ........................5-3 LAN TCP/IP ......................5-4 Configuring for Port Forwarding to Local Servers ............5-6 Local Web and FTP Server Example ..............5-7 Local Game Host or Videoconference Example ..........5-8 Static Routes ........................5-8 Static Route Example .....................5-10 Chapter 6 Maintenance System Status .........................6-1...
  • Page 8 Testing the Path from Your PC to a Remote Device ..........7-7 Problems with Date and Time ..................7-8 Appendix A Technical Specifications General Specifications ....................A-1 Appendix B Networks and Routing Basics Basic Router Concepts ....................B-1 What is a Router? ....................B-1 Routing Information Protocol ...................
  • Page 9 Figure 2-1. DG814 Front Panel ..................2-2 Figure 2-2. DG814 Rear Panel ...................2-3 Figure 2-3. Typical installation ..................2-5 Figure 4-1. Login window ...................4-2 Figure 4-2. Browser-based configuration main menu ..........4-2 Figure 4-3. Browser-based Setup Wizard, first screen ..........4-3 Figure 4-4. Browser-based Setup Wizard, second screen .........4-3 Figure 4-5.
  • Page 11 Table 2-1. LED Descriptions ..................2-3 Table 4-1. Content Filter Log entry descriptions ............. 4-11 Table 4-2. Log display buttons ................4-12 Table 5-1. Dynamic DNS configuration fields ............5-2 Table 5-2. DHCP Setup Fields .................5-4 Table 5-3. LAN TCP/IP Setup Fields ...............5-4 Table 5-4.

  • Page 13: About This Guide

    ™ Gateway. The Model DG814 gateway provides a secure connection for multiple personal computers (PCs) to the Internet through an internal ADSL modem that is normally intended for use by a single PC. Note: If you are unfamiliar with networking and routing, refer to Appendix B, “Networks and Routing...
  • Page 14 Reference Manual for the Model DG814 DSL Modem Internet Gateway For more information about IP address translation, refer to RFC 1631, The IP Network Address Translator (NAT). About This Guide...

  • Page 15: Typographical Conventions

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Typographical Conventions This guide uses the following typographical conventions: italics Book titles and UNIX file, command, and directory names. Screen text, user-typed command-line entries. courier font Initial Caps Menu titles and window and button names.

  • Page 17: Introduction

    Gateway and discusses planning considerations for installation. About the Router The Model DG814 DSL Modem Internet Gateway with 4-port switch connects your local area network (LAN) to the Internet using a built-in ADSL modem. The Model DG814 gateway provides you with multiple Web content filtering options, plus browsing activity reporting and instant alerts via e-mail.

  • Page 18: Security

    Front panel LEDs for easy monitoring of status and activity • Flash EPROM for firmware upgrade • Free technical support seven days a week, twenty-four hours a day Security The Model DG814 gateway is equipped with several features designed to maintain security as described in this section. Introduction...

  • Page 19: Content Filtering

    • Logging of inappropriate use You can configure the Model DG814 gateway to log access to Web sites and to e-mail the log to you. You can also configure the gateway to send an immediate alert e-mail message to you whenever a local user attempts to access a blocked Web site.

  • Page 20: Tcp/Ip

    • IP Address Masquerading by Dynamic NAT+ The Model DG814 gateway allows several networked PCs to share an Internet account using only a single IP address, which may be statically or dynamically assigned by your Internet service provider (ISP). This technique, an extension of Network Address Translation (NAT), is also known as IP address masquerading and allows the use of an inexpensive single-user ISP account.

  • Page 21: Maintenance And Support

    Reference Manual for the Model DG814 DSL Modem Internet Gateway • Visual monitoring The Model DG814 gateway’s front panel LEDs provide an easy way to monitor its status and activity. Maintenance and Support NETGEAR offers the following features to help you maximize your use of the Model DG814 gateway: •...
  • Page 22 Reference Manual for the Model DG814 DSL Modem Internet Gateway Introduction...

  • Page 23: Setting Up The Hardware

    • Support Information Card If any of the parts are incorrect, missing, or damaged, contact your NETGEAR dealer. Keep the carton, including the original packing materials, in case you need to return the gateway for repair. Setting Up the Hardware...

  • Page 24: Local Network Hardware Requirements

    (PCs) that are interconnected by twisted-pair Ethernet cables. PC Requirements To install and run the Model DG814 gateway over your network of PCs, each PC must have an installed Ethernet Network Interface Card (NIC) and an Ethernet cable. If the PC will connect to your network at 100 Mbps, you must use a Category 5 (CAT5) cable such as the cable provided with your router.

  • Page 25: The Router's Rear Panel

    Reference Manual for the Model DG814 DSL Modem Internet Gateway You can use some of the LEDs to verify connections. Table 2-1 lists and describes each LED on the front panel of the Model DG814 gateway. These LEDs are green when lit. Table 2-1. LED Descriptions Label...

  • Page 26: Connecting The Router

    Reference Manual for the Model DG814 DSL Modem Internet Gateway The rear panel contains the following features (from left to right): • Power switch • 18 V AC power adapter outlet • Four Local (LAN) Ethernet ports for connecting the router to the local PCs •...

  • Page 27: Connecting To Your Local Ethernet Network

    Reference Manual for the Model DG814 DSL Modem Internet Gateway A typical installation is shown in Figure 2-3, below Figure 2-3. Typical installation Connecting to your Local Ethernet Network Your local network (LAN) will attach to the four Local router ports shown in Figure 2-2.

  • Page 28: Connecting To Your Adsl Service And Telephone Provider

    (pins 2 and 3 of the 4-pin jack). If this is not the case, a swapper (not included) is necessary to move the connection to the inner pair. To install the Model DG814 gateway directly to the wall jack without installing a telephone: Connect the provided telephone cable to the wall jack.

  • Page 29: Adsl Through Other Wall Jacks

    Reference Manual for the Model DG814 DSL Modem Internet Gateway ADSL through other wall jacks Plug the “LINE” connection from the included microfilter into the wall jack. Connect the “DSL” jack of the microfilter to the ADSL port of your router using the telephone cable provided.
  • Page 30 Reference Manual for the Model DG814 DSL Modem Internet Gateway All LEDs will briefly be tested. After approximately 10 seconds, verify that: • The Test LED is not lit. • The Local port LEDs are lit for any local ports that are connected.

  • Page 31: Preparing Your Network

    Preparing Your Network This chapter describes how to prepare your PC network to connect to the Internet through the Model DG814 DSL Modem Internet Gateway and how to order broadband Internet service from an Internet service provider (ISP). Note: If an ISP technician configured your PC during the installation of a broadband modem, or if you configured it using instructions provided by your ISP, you may need to copy the current configuration information for use in the configuration of your gateway.

  • Page 32: Configuring Windows 95, 98 And Me For Ip Networking

    “Appendix B, “Networks and Routing Basics.” The Model DG814 gateway is shipped preconfigured as a DHCP server. The gateway assigns the following TCP/IP configuration information automatically when the PCs are rebooted: • PC or workstation IP addresses—192.168.0.2 through 192.168.0.254 •...
  • Page 33 Reference Manual for the Model DG814 DSL Modem Internet Gateway You must have an Ethernet adapter, the TCP/IP protocol, and Client for Microsoft Networks. Note: It is not necessary to remove any other network components shown in the Network window in order to install the adapter, TCP/IP, or Client for Microsoft Networks.

  • Page 34: Assign Tcp/Ip Configuration By Dhcp

    The simplest way to configure this information is to allow the PC to obtain the information from the internal DHCP server of the Model DG814 gateway. To use DHCP with the recommended default addresses, follow these steps: Connect all PCs to the router, then restart the gateway and allow it to boot.

  • Page 35: Verifying Tcp/Ip Properties (Windows)

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Select “I want to connect through a Local Area Network” and click Next. Uncheck all boxes in the LAN Internet Configuration screen and click Next. Proceed to the end of the Wizard.

  • Page 36: Verifying Tcp/Ip Properties

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Select Properties. Verify that ‘Client for Microsoft Networks’ and ‘Internet Protocol (TCP/IP)’ are present. If not, select Install and add them. Select ‘Internet Protocol (TCP/IP)’, click Properties, and verify that “Obtain an IP address automatically is selected.

  • Page 37: Mac Os 7, 8.6 Or 9.X

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Mac OS 7, 8.6 or 9.x From the Apple menu, choose Control Panels, and then chooseTCP/IP. The TCP/IP control panel opens: If not already selected, select Ethernet in the “Connect via” list.

  • Page 38: Verifying Tcp/Ip Properties (Macintosh)

    For access to the Internet, you need to contract with an Internet service provider (ISP) for a single-user Internet access account using ADSL. The Model DG814 DSL Modem Internet Gateway includes a built-in ADSL modem that connects directly to your ADSL line.

  • Page 39: Login Protocols

    Reference Manual for the Model DG814 DSL Modem Internet Gateway For a single-user Internet account, your ISP supplies TCP/IP configuration information (such as IP address, subnet mask and default gateway) and VPI and VCI multiplexing information for one PC. Your ISP may also provide other login information, such as User Name and Password, in the case where the PPPoE or PPPoA protocol is required.

  • Page 40: Obtaining Isp Configuration Information (Windows)

    As mentioned above, you may need to collect configuration information from your PC so that you can use this information when you configure the Model DG814 gateway. Following this procedure is only necessary when your ISP does not dynamically supply the account information.

  • Page 41: Obtaining Isp Configuration Information (Macintosh)

    As mentioned above, you may need to collect configuration information from your Macintosh so that you can use this information when you configure the Model DG814 gateway. Following this procedure is only necessary when your ISP does not dynamically supply the account information.
  • Page 42 Reference Manual for the Model DG814 DSL Modem Internet Gateway 3-12 Preparing Your Network...

  • Page 43: Basic Configuration Of The Router

    Chapter 4 Basic Configuration of the Router This chapter describes how to perform the basic configuration of your Model DG814 DSL Modem Internet Gateway using the Setup Wizard which walks you through the configuration process for your Internet connection. Configuring for Internet Access In order to use the browser-based Web Configuration Manager, your PC must have a web browser program installed such as Microsoft Internet Explorer or Netscape Navigator.

  • Page 44: Figure 4-1. Login Window

    Reference Manual for the Model DG814 DSL Modem Internet Gateway A login window opens as shown in Figure 4-1 below:. Figure 4-1. Login window This screen may have a different appearance in other browsers. Type in the User Name box, in the Password box, and then click OK.

  • Page 45: Figure 4-3. Browser-Based Setup Wizard, First Screen

    Reference Manual for the Model DG814 DSL Modem Internet Gateway In the first Wizard screen, enter your account’s System Name and Domain Name, as shown in Figure 4-3 below: Figure 4-3. Browser-based Setup Wizard, first screen These parameters may be necessary to access your ISP’s services such as mail or news servers.

  • Page 46: Figure 4-5. Browser-Based Setup Wizard, Third Screen

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Your ISP will indicate whether your Multiplexing Method is VC-BASED or LLC-BASED and which VPI and VCI is used. Enter the information in this screen. The most common Multiplexing Method is LLC-based. If your service provider does not indicate which one is used, use LLC-BASED.

  • Page 47: Figure 4-6. Browser-Based Setup Wizard, Fourth Screen

    Reference Manual for the Model DG814 DSL Modem Internet Gateway If you wish to change the login timeout, enter a new value in minutes. • If your service provider uses Classical IP, select Classical IP. It is not necessary to enter a Service Type, User Name, or Password.

  • Page 48: Configuring For Content Filtering

    ISP. The browser should begin to display a Web page. Configuring for Content Filtering The Model DG814 DSL Modem Internet Gateway provides you with Web content filtering options, plus browsing activity reporting and instant e-mail alerts. Parents and network administrators can establish restricted access policies based on time-of-day, web addresses and web address keywords.

  • Page 49: E-Mail

    Reference Manual for the Model DG814 DSL Modem Internet Gateway E-Mail In order to receive logs and alerts by e-mail, you must provide your e-mail information in the E-Mail tab, shown below • Turn E-mail Notification On Check this box to enable the e-mail notification feature.

  • Page 50: Keyword

    In this case, the router overwrites the log and discards its contents. The Model DG814 gateway uses the Network Time Protocol (NTP) to obtain the current time and date from one of several Network Time Servers on the Internet. This menu displays the current time.

  • Page 51: Schedule

    If you wish to block all Internet browsing access during a scheduled period, enter the keyword “.” and set the schedule in the Schedule menu. Schedule The Model DG814 gateway allows you to specify when blocking will be enforced. The Schedule tab is shown below. •...

  • Page 52: Trusted

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Trusted The Model DG814 gateway allows you to specify one Trusted User, which is a PC that will be exempt from blocking and logging. Since the Trusted User will be identified by an IP address, you should configure that PC with a fixed IP address.

  • Page 53: Logs

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Logs The log is a detailed record of what websites you have accessed or attempted to access. Up to 128 entries are stored in the log. Log entries will only appear when keyword blocking is enabled, and no log entries will be made for the Trusted User.
  • Page 54 Reference Manual for the Model DG814 DSL Modem Internet Gateway Log viewing buttons are described in Table 4-2 Table 4-2. Log display buttons Field Description Previous Page Click this button to view the previous log page. Refresh Click this button to refresh the log screen.

  • Page 55: Advanced Configuration Of The Router

    Chapter 5 Advanced Configuration of the Router This chapter describes how to configure the advanced features of your Model DG814 DSL Modem Internet Gateway. These features can be found by clicking on the Advanced heading in the Main Menu of the browser interface. One advanced feature, Content Filtering, is described in the previous chapter.

  • Page 56: Dynamic Dns

    To utilize this service, you must register with the Dynamic DNS service provider, who will give you a password or key. At this time, the Model DG814 gateway only supports DynDNS service. For more information, visit www.dyndns.org.

  • Page 57: Lan Setup

    LAN Setup Menu DHCP The Model DG814 gateway has the capability to act as a DHCP server, allowing it to assign IP, DNS, and default gateway addresses to attached PCs. The assigned default gateway address is the LAN address of the router. IP addresses will be assigned to the attached PCs from a pool of addresses specified in this menu.

  • Page 58: Lan Tcp/Ip

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Table 5-2 lists and describes the fields to use for setting up DHCP parameters. Table 5-2. DHCP Setup Fields Field Description DHCP Server: If this box is checked, the router acts as a DHCP server.
  • Page 59 Reference Manual for the Model DG814 DSL Modem Internet Gateway Table 5-3. LAN TCP/IP Setup Fields (continued) Field Description RIP Direction This parameter determines how the router handles RIP (Routing Information Protocol). RIP allows the router to exchange routing information with other routers. If set to None (default), the router does not participate in any RIP exchange with other routers.

  • Page 60: Configuring For Port Forwarding To Local Servers

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Configuring for Port Forwarding to Local Servers Although the router causes your entire local network to appear as a single machine to the Internet, you can make local servers for different services (for example, FTP or HTTP) visible and available to the Internet.

  • Page 61: Local Web And Ftp Server Example

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Use the PORTS menu to configure the router to forward incoming protocols to IP addresses on your local network based on the port number. In addition to servers for specific protocols, you can also specify a Default (also called DMZ) Server to which all other incoming protocols are forwarded.

  • Page 62: Local Game Host Or Videoconference Example

    Some online games and videoconferencing applications are incompatible with NAT. The Model DG814 gateway is programmed to recognize some of these applications and to work properly with them, but there are other applications that may not function well. In some cases, one local PC can run the application properly if that PC’s IP address is entered as the default in...

  • Page 63: Figure 5-4. Static Route Entry And Edit Menu

    Reference Manual for the Model DG814 DSL Modem Internet Gateway To add or edit a Static Route, select a number and click the Edit button to open the Edit Menu, shown in Figure 5-4, below. Figure 5-4. Static Route Entry and Edit Menu Table 5-5 lists and describes the fields for the IP Static Route Edit menu.

  • Page 64: Static Route Example

    As an example of when a static route is needed, consider the following case: • Your primary Internet access is through the Model DG814 gateway to an ISP. • You have an ISDN router on your home network for connecting to the company where you are employed.

  • Page 65: Maintenance

    Chapter 6 Maintenance This chapter describes how to use the maintenance features of your Model DG814 DSL Modem Internet Gateway. These features can be found by clicking on the Maintenance heading in the Main Menu of the browser interface. System Status The System Status menu provides a limited amount of status and usage information.
  • Page 66 Reference Manual for the Model DG814 DSL Modem Internet Gateway The System Status screen shows the parameters listed in Table 6-1 Table 6-1. System Status fields Field Description System Name This field displays the Host Name assigned to the router.

  • Page 67: Figure 6-2. Router Statistics Screen

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Click the “Show Statistics” button to display router usage statistics, as shown in Figure 6-2 below.: Figure 6-2. Router Statistics screen This screen shows the following statistics:. Table 6-2. Router Statistics Fields...

  • Page 68: Figure 6-3. Pppoe Status Screen

    Connection Time field. The Model DG814 gateway goes through the following steps to bring up a PPPoE or PPPoA connection.

  • Page 69: Dhcp Table

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Click the “Ping Status” button to perform a connectivity test from your router, as shown in Figure 6-4 below. Figure 6-4. Ping Status screen This screen allows you to “ping” an IP address on the LAN to verify connectivity. Enter the IP address and click the “PING”...

  • Page 70: Upgrade

    Upgrade The routing software of the Model DG814 gateway is stored in FLASH memory, and can be upgraded as new software is released by NETGEAR. Upgrade files can be downloaded from Netgear's website. If the upgrade file is compressed (.ZIP file), you must first extract the binary (.BIN) file before sending it to the gateway.

  • Page 71: Restore And Backup The Configuration

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Restore and Backup the Configuration The Restore and Backup tabs in the Maintenance menu allow you to save and retrieve a file containing your gateway’s configuration settings. To save your settings, select the Backup tab. Click the Backup button. Your browser will extract the configuration file, named ‘rom-0’, from the gateway and will prompt you for a location on...

  • Page 72: Using The Default Reset Button

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Using the Default Reset button To restore the factory default configuration settings without knowing the Manager password or IP address, you must use the Default Reset button on the rear panel of the router.

  • Page 73: Troubleshooting

    Chapter 7 Troubleshooting This chapter gives information about troubleshooting your Model DG814 DSL Modem Internet Gateway. After each problem description, instructions are provided to help you diagnose and solve the problem. Basic Functioning After you turn on power to the router, the following sequence of events should occur: When power is first applied, verify that the Power LED is on.

  • Page 74: Test Led Never Blinks Or Led Stays On

    Reference Manual for the Model DG814 DSL Modem Internet Gateway • Check that you are using the 18 V AC power adapter supplied by NETGEAR for this product. If the error persists, you have a hardware problem and should contact technical support.

  • Page 75: Troubleshooting The Isp Connection

    Reference Manual for the Model DG814 DSL Modem Internet Gateway • If your router’s IP address has been changed and you don’t know the current IP address, clear the router’s configuration to factory defaults. This will set the router’s IP address to 192.168.0.1.

  • Page 76: Wan Led Off

    Reference Manual for the Model DG814 DSL Modem Internet Gateway If the WAN LED does not turn green, disconnect all telephones on the line. If this solves the problem, reconnect the telephones one at a time, being careful to use a microfilter on each telephone.

  • Page 77: Troubleshooting Pppoe Or Pppoa

    Reference Manual for the Model DG814 DSL Modem Internet Gateway To check the WAN IP address from the browser interface: Launch your browser and select an external site such as www.netgear.com Access the Main Menu of the router’s configuration at http://192.168.0.1 Under the Maintenance heading check that an IP address is shown for the WAN Port If 0.0.0.0 is shown, your router has not obtained an IP address from your ISP.

  • Page 78: Troubleshooting Internet Browsing

    Reference Manual for the Model DG814 DSL Modem Internet Gateway If you cannot connect after several minutes, you may be using an incorrect Service Name, User Name or Password. There also may be a provisioning problem with your ISP. Note: Unless you connect manually, the router will not authenticate using PPPoE or PPPoA until data is transmitted to the network.

  • Page 79: Testing The Path From Your Pc To A Remote Device

    Reference Manual for the Model DG814 DSL Modem Internet Gateway In the field provided, type Ping followed by the IP address of the router, as in this example: ping 192.168.0.1 Click OK. You should see a message like this one: Pinging <IP address>...

  • Page 80: Problems With Date And Time

    The E-Mail menu in the Content Filtering section displays the current date and time of day. The Model DG814 gateway uses the Network Time Protocol (NTP) to obtain the current time from one of several Network Time Servers on the Internet. Each entry in the log is stamped with the date and time of day.

  • Page 81: Technical Specifications

    Appendix A Technical Specifications This appendix provides technical specifications for the Model DG814 DSL Modem Internet Gateway. General Specifications Network Protocol and Standards Compatibility Data and Routing Protocols: TCP/IP RIP-1/RIP-2 DHCP server and DHCP relay RFC 1483, 2684 Bridged Ethernet Encapsulation...
  • Page 82 Reference Manual for the Model DG814 DSL Modem Internet Gateway Japan: 100V, 50/60 Hz, input All regions (output): 18 V AC @ 0.4A output, 30W maximum Physical Specifications Dimensions: 255 by 169 by 34 mm 10.0 by 6.7 by 1.3 in.

  • Page 83: Networks And Routing Basics

    Routers vary in performance and scale, number of routing protocols supported, and types of physical WAN connection they support. The Model DG814 DSL Modem Internet Gateway is a residential or small office router that routes the IP protocol over a single-user ADSL connection.

  • Page 84: Routing Information Protocol

    Information Protocol (RIP). Using RIP, routers periodically update one another and check for changes to add to the routing table. The Model DG814 gateway supports both the older RIP-1 and the newer RIP-2 protocols. Among other improvements, RIP-2 supports subnet and multicast protocols. RIP is not required for most home applications.

  • Page 85: Figure B-1. Three Main Address Classes

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Class A Network Node Class B Network Node Class C Network Node 7261 Figure B-1. Three Main Address Classes The five address classes are: • Class A Class A addresses can have up to 16,777,214 hosts on a single network. They use an eight-bit network number and a 24-bit node number.

  • Page 86: Netmask

    Reference Manual for the Model DG814 DSL Modem Internet Gateway This addressing structure allows IP addresses to uniquely identify each physical network and each node on each physical network. For each unique value of the network portion of the address, the base address of the range (host address of all zeros) is known as the network address and is not usually assigned to a host.

  • Page 87: Figure B-2. Example Of Subnetting A Class B Address

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Subnet addressing allows us to split one IP network address into smaller multiple physical networks known as subnetworks. Some of the node numbers are used as a subnet number instead.
  • Page 88 Reference Manual for the Model DG814 DSL Modem Internet Gateway The following table lists the additional subnet mask bits in dotted-decimal notation. To use the table, write down the original class netmask and replace the 0 value octets with the dotted-decimal value of the additional subnet bits.

  • Page 89: Private Ip Addresses

    Reference Manual for the Model DG814 DSL Modem Internet Gateway NETGEAR strongly recommends that you configure all hosts on a LAN segment to use the same netmask for the following reasons: • So that hosts recognize local IP broadcast packets When a device broadcasts to its segment neighbors, it uses a destination address of the local network address with all ones for the host address.

  • Page 90: Figure B-3. Single Ip Address Operation Using Nat

    Reference Manual for the Model DG814 DSL Modem Internet Gateway The router accomplishes this address sharing by translating the internal LAN IP addresses to a single address that is globally unique on the Internet. The internal LAN IP addresses can be either private addresses or registered addresses.

  • Page 91: Mac Addresses And Address Resolution Protocol

    Many of the resources on the Internet can be addressed by simple descriptive names such as www.NETGEAR.com. This addressing is very helpful at the application level, but the descriptive name must be translated to an IP address in order for a user to actually contact the resource. Just as...

  • Page 92: Ip Configuration By Dhcp

    IP addresses, along with other information (such as gateway and DNS addresses) that it may assign to the other devices on the network. The Model DG814 gateway has the capacity to act as a DHCP server.

  • Page 93: Ethernet Cabling

    Reference Manual for the Model DG814 DSL Modem Internet Gateway Ethernet Cabling Although Ethernet networks originally used thick or thin coaxial cable, most installations currently use unshielded twisted pair (UTP) cabling. The UTP cable contains eight conductors, arranged in four twisted pairs, and terminated with an RJ45 type connector. A normal "straight-through" UTP...

  • Page 94: Cable Quality

    • Auto MDI/MDI-X switching Some Ethernet switch products, such as the Model DG814 gateway, are able to sense the polarity of a connection and automatically adapt to the proper mating polarity. Cable Quality...

  • Page 95: Glossary

    Domain names are of the form of a registered entity name plus one of a number of predefined top level suffixes such as .com, .edu, .uk, etc. For example, in the address mail.NETGEAR.com, mail is a server name and NETGEAR.com is the domain.
  • Page 96 Reference Manual for the Model DG814 DSL Modem Internet Gateway IP Address A four-byte number uniquely defining each host on the Internet. Ranges of addresses are assigned by Internic, an organization formed for this purpose. Usually written in dotted-decimal notation with periods separating the bytes (for example, 134.177.244.57).
  • Page 97 Reference Manual for the Model DG814 DSL Modem Internet Gateway Network Address A technique by which several hosts share a single IP address for access to the Translation Internet. Network Interface Device. The point of demarcation, where the telephone line comes into the house.
  • Page 98 Reference Manual for the Model DG814 DSL Modem Internet Gateway Virtual Channel Identifier. Together with the VPI, defines a Virtual Channel through an ATM network. Used by ATM switching equipment to route data through the network. Virtual Path Identifier. Together with the VCI, defines a Virtual Channel through an ATM network.
  • Page 99 Index customer support iii Address Resolution Protocol B-9 ADSL connecting through other jacks 2-7 date and time 7-8 connecting through RJ11 2-6 daylight savings time 4-8, 7-8 ARP B-9 default reset button 6-8 Auto MDI/MDI-X 1-2, 1-3, 2-6, B-11, B-12 DHCP 1-2, 1-4, 3-2, 4-5, 5-3, B-10 Auto Uplink 1-3, 2-6 configuring on PC 3-4...
  • Page 100 Multiplexing Method 4-4 masquerading 1-4 private B-7 Multiplexing, VPI, VCI 3-9 translating xiv IP configuration by DHCP B-10 IP networking NAT 1-2, 1-3, 3-9, B-7 for Macintosh 3-6 NAT. See Network Address Translation for Windows 3-2, 3-5 NETGEAR ipconfig untility 3-6 Index...
  • Page 101 contacting xiii access device 2-2 hardware 2-2 netmask B-4 translation table B-6 reset button, clearing config 6-8 Network Address Translation 1-2, 1-4, 3-9, B-7 restore configuration 6-6 Network Time Protocol 4-8, 7-8 restore factory settings 6-7 NTP 4-8, 7-8 1466 xiii, B-7 1597 xiii, B-7 1631 xiv, B-8 finding B-7...
  • Page 102 technical support xiii time of day 7-8 time zone 4-8 time-stamping 4-8 troubleshooting 7-1 Trusted User 4-10 typographical conventions xv UNIX 3-2 uplink switch B-11 User Dynamic DNS 5-2 VC-BASED multiplexing method 4-4 VCI 3-9 VPI 3-9 VPI/VCI 6-2 configuration 4-4 Wildcard Dynamic DNS 5-2 Windows 2000 3-5...

Table of Contents