IP Concepts, IP Addresses | D-Link DSL-G624T guide

DSL-G624T Wireless A DSL Router User’s Guide

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.

IP Network Classes

Class	Maximum Number of	Network Addresses (Host Portion	Maximum Number of Hosts per
	Networks in Class	in Parenthesis)	Network
A	126	1(.0.0.0) to 126 (.0.0.0)	16,777,214

B	16,382	128.1(.0.0) to 191.254(.0.0)	65,534

C	2,097,150	192.0.1(.0) to 223.255.254(.0)	254

DSL-G624T, D-Link Wireless ADSL Router specifications

The D-Link Wireless ADSL Router, DSL-G624T, is a versatile and powerful networking solution designed for home and small office environments. This router combines the functionality of ADSL modem capabilities with the convenience of wireless connectivity, making it an ideal choice for users looking to establish a reliable internet connection without the hassle of multiple devices.

One of the primary features of the DSL-G624T is its ADSL2+ support, which allows download speeds of up to 24 Mbps. This high-speed capability ensures that users can surf the web, stream videos, and engage in online gaming with minimal lag and buffering. The built-in ADSL modem means that users can connect directly to their ISP with no need for additional hardware, simplifying setup and reducing clutter.

In terms of wireless technology, the DSL-G624T supports the 802.11g Wi-Fi standard, which offers a maximum theoretical speed of 54 Mbps. This allows for a stable and speedy wireless connection throughout the home or office, supporting multiple users and devices simultaneously. The router also features Wireless Distribution System (WDS) functionality, enabling users to extend the wireless network easily by connecting additional routers or access points.

Security is a crucial aspect of any networking device, and the DSL-G624T does not disappoint. It includes advanced security features such as WPA/WPA2 encryption, ensuring that users' data remains safe from unauthorized access. Additionally, the router supports MAC address filtering and firewall protection, providing an additional layer of defense against potential threats.

The DSL-G624T is equipped with four 10/100 Mbps Ethernet ports, allowing users to connect wired devices such as desktop computers, gaming consoles, or network-attached storage directly to the router. This is particularly useful for systems that require stable connections, such as for gaming or streaming high-definition content.

Installation and management of the DSL-G624T is user-friendly, thanks to its web-based interface. Users can easily configure settings, manage connected devices, and monitor their network's performance. The provision of DHCP support and easy-to-follow wizards streamlines the setup process for users of all technical levels.

In conclusion, the D-Link Wireless ADSL Router, DSL-G624T, combines high-speed ADSL modem capabilities with robust wireless networking features. With its solid performance, essential security measures, and ease of use, this router is a fantastic choice for users looking to enhance their internet connectivity at home or in small office environments.