D-Link DSL-G664T manual IP Concepts, IP Addresses

Page 84

IP Concepts

This appendix describes some basic IP concepts, the TCP/IP addressing scheme and shows how to assign IP Addresses.

When setting up the Router, you must make sure it has a valid IP address. Even if you will not use the WAN port (ADSL port), you should, at the very least, make sure the Ethernet LAN port is assigned a valid IP address. This is required for telnet, in-band SNMP management, and related functions such as “ trap” handling and TFTP firmware download.

IP Addresses

The Internet Protocol (IP) was designed for routing data between network sites all over the world, and was later adapted for routing data between networks within any site (often referred to as “ subnetworks” or “ subnets”). IP includes a system by which a unique number can be assigned to each of the millions of networks and each of the computers on those networks. Such a number is called an IP address.

To make IP addresses easy to understand, the originators of IP adopted a system of representation called “ dotted decimal” or “ dotted quad” notation. Below are examples of IP addresses written in this format:

201.202.203.204 189.21.241.56 125.87.0.1

Each of the four values in an IP address is the ordinary decimal (base 10) representation of a value that a computer can handle using eight “ bits” (binary digits — 1s and 0s). The dots are simply convenient visual separators.

Zeros are often used as placeholders in dotted decimal notation; 189.21.241.56 can therefore also appear as 189.021.241.056.

IP networks are divided into three classes on the basis of size. A full IP address contains a network portion and a

host” (device) portion. The network and host portions of the address are different lengths for different classes of networks, as shown in the table below.

Networks attached to the Internet are assigned class types that determine the maximum number of possible hosts per network. The previous figure illustrates how the net and host portions of the IP address differ among the three classes. Class A is assigned to networks that have more than 65,535 hosts; Class B is for networks that have 256 to 65534 hosts; Class C is for networks with less than 256 hosts.

76

Image 84
Contents DSL-G664T Warnung Table of Contents Advanced Router Management Installation Requirements About This User’s GuideBefore You Start 802.11b Wireless LAN Configuration Ethernet Port NIC AdapterAdditional Software About Clip Connections RFCInformation you will need from your Adsl service provider Packing List LAN Subnet Mask for the DSL-G664TWhat is ADSL? IntroductionRouter Description and Operation Router Features Standards Compatibility and Compliance Packing List Front Panel DisplayRear Panel Connections Introduction to 802.11b Wireless 802.11g WirelessWireless LAN Basics Radio TransmissionAdsl Technology RangeHardware Installation LocationPower on Router Factory Reset ButtonHub or Switch to Router Connection Network ConnectionsConnect Adsl Line Connect Router to EthernetComputer to Router Connection Basic Router Configuration Configuring IP Settings on Your ComputerWAN Configuration Summary Configure Windows XP for Dhcp Windows Configure Windows 2000 for Dhcp Configure Windows ME for DhcpWindows ME Windows 95 and Windows Configure Windows 95 and Windows 98 for Dhcp Configure Windows NT 4.0 for DhcpWindows NT 4.0 Workstations Access the Configuration Manager Login to HomeConfigure the Router Home Status Information windowSetup Menu Opening Setup windowWireless Settings Wireless configuration windowWireless Security WEP configuration window1X configuration window 802.1XWPA Wi-Fi Protected Access PSK StringModem Setup Modem Setup menu change modulation typeConfigure Connection 1 for PPPoA PPPoA Connection 1 Setup menuConfigure Connection 1 for PPPoE Change the Connection Type10. Setup Configure Connection 1 for PPPoE Configure Connection 1 for Bridge 11. Setup Configure Connection 1 for BridgeConfigure Connection 1 for Static IP for WAN 12. Setup Configure Connection 1 for Static IP for the WANPage Configure Connection 1 for Dhcp for WAN Configure Connection 1 for Clip 14. Setup Configure Connection 1 for Clip IPoACreate a New Connection New Connection Example 1 Create a New PPPoE Connection16. Set up a New Connection Connection New Connection Example 2 Create a New Bridge ConnectionDhcp Configuration for LAN Dhcp Parameter Description Start IPEnd IP Lease TimeEnable Dhcp Relay 18. Configure Dhcp Relay Service19. Configure Management IP Management IPSave Configuration Changes 20. Router Tools Menus22. Changes permanently saved message Advanced setup main menu Advanced Router ManagementUPnP Advanced UPnP windowLAN Clients Setup LAN ClientsPort Forwarding Advanced Port Forwarding windowCategory Available Rules Games Audio/VideoApplications ServersSet up Custom Port Forwarding Rules Page Access Control Access Control menuVPN Enable/Disable NAT and Firewall Advanced SecurityDMZ IP Address Setup Remote Management Bridge FiltersMulticast Pass-through 10. Multicast pass-through menuStatic Routing 11. Static Routing menuDynamic Routing 12. Dynamic Routing RIP menuWireless Management Multiple Virtual ConnectionsPage Tools and Utility Menus 13. Tools and utility menu linksUser Management 14. User Management menuSystem Commands 15. Tools System Commands menuRemote Log 16. Remote Log menuUpdate Gateway 17. Tools Update Gateway windowPing Test 18. Tools Ping Test windowModem Test 19. Tools Modem Test windowStatus Menus 20. Status display linksNetwork Statistics 21. Network Statistics windowConnection Status 22. Connection Status windowDhcp Clients 23. Dhcp Clients windowModem Status 24. Modem Status windowProduct Information 25. Product Information windowSystem Log 26. System Log windowHelp Menu 27. Opening Help windowTechnical Specifications Physical and Environmental CE Class BIP Address Setup Using the Default IP AddressAssigning Network IP Addresses Manual IP Address AssignmentUsing Dhcp IP Setup Example #2Changing the IP Address of the Router IP Concepts IP AddressesSubnet Mask Class Beginning Address Ending AddressIP Class Subnet Mask Class a 255.0.0.0 Class B 255.255.0.0 Class C 255.255.255.0Microfilter Installation Microfilters and SplittersMicrofilters Line Splitter Installation Line Splitter