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NETGEAR DG834GT manual Netmask, Subnet Addressing

Models: DG834GT

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Reference Manual for the Model DG834GT 108 Mbps Super Wireless ADSL Router

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. Also, the top address of the range (host address of all ones) is not assigned, but is used as the broadcast address for simultaneously sending a packet to all hosts with the same network address.

Netmask

In each of the address classes previously described, the size of the two parts (network address and host address) is implied by the class. This partitioning scheme can also be expressed by a netmask associated with the IP address. A netmask is a 32-bit quantity that, when logically combined (using an AND operator) with an IP address, yields the network address. For instance, the netmasks for Class A, B, and C addresses are 255.0.0.0, 255.255.0.0, and 255.255.255.0, respectively.

For example, the address 192.168.170.237 is a Class C IP address whose network portion is the upper 24 bits. When combined (using an AND operator) with the Class C netmask, as shown here, only the network portion of the address remains:

11000000 10101000 10101010 11101101 (192.168.170.237)

combined with:

11111111 11111111 11111111 00000000 (255.255.255.0)

Equals:

11000000 10101000 10101010 00000000 (192.168.170.0)

As a shorter alternative to dotted-decimal notation, the netmask may also be expressed in terms of the number of ones from the left. This number is appended to the IP address, following a backward slash (/), as “/n.” In the example, the address could be written as 192.168.170.237/24, indicating that the netmask is 24 ones followed by 8 zeros.

Subnet Addressing

By looking at the addressing structures, you can see that even with a Class C address, there are a large number of hosts per network. Such a structure is an inefficient use of addresses if each end of a routed link requires a different network number. It is unlikely that the smaller office LANs would have that many devices. You can resolve this problem by using a technique known as subnet addressing.

B-4

Network and Routing Basics

August 2004

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NETGEAR DG834GT manual Netmask, Subnet Addressing
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DG834GT specifications

The NETGEAR DG834GT is a versatile wireless ADSL2+ modem router that is widely recognized for its reliable performance and impressive feature set. As an all-in-one solution, it caters to the needs of both home and small office users who require stable internet connectivity combined with advanced networking capabilities.

One of the standout features of the DG834GT is its impressive wireless performance, which supports wireless 802.11g technology. This allows for wireless speeds of up to 54 Mbps, making it suitable for common internet activities such as web browsing, email, and streaming media. For users seeking enhanced range and reliability, the modem incorporates NETGEAR's patented Smart Wizard technology, which simplifies the installation process and ensures optimal wireless coverage throughout the area.

The DG834GT also supports ADSL2+ internet connections, providing a robust bandwidth of up to 24 Mbps, depending on the service provider and distance from the exchange. This means users can take full advantage of high-speed internet services, allowing for smooth simultaneous activities like online gaming and video conferencing.

Security is another important aspect of the DG834GT, featuring a robust firewall and support for WPA/WPA2 encryption, ensuring that user data remains secure. The modem also includes parental controls, enabling users to restrict internet access at certain times or filter content, making it ideal for family use.

In addition to its wireless capabilities, the DG834GT comes with four Ethernet ports, offering the flexibility to connect multiple wired devices. This makes it a great option for users who require stable connections for gaming consoles, desktop computers, or network printers.

Performance-wise, the NETGEAR DG834GT is equipped with Quality of Service (QoS) capabilities, allowing users to prioritize bandwidth for specific applications and devices. This ensures that essential tasks, such as video streaming or online gaming, receive the necessary bandwidth to function smoothly without interruption.

Overall, the NETGEAR DG834GT combines advanced technology, ease of use, and a comprehensive feature set, making it a popular choice among consumers looking for reliable ADSL connectivity and robust networking options. With its ability to support multiple devices and deliver high-speed internet, it remains a go-to solution for users navigating the demands of modern online life.