Understanding IP Addressing C-7

Number of Devices (other than

Netopia R2121) on Local Network

Largest Possible Ethernet Subnet

Mask

 

30-61

255.255.255.192

 

 

 

 

62-125

255.255.255.128

 

 

 

 

125-259

255.255.255.0

 

 

 

Configuration

This section describes the specific IP address lease, renew, and release mechanisms for both the Mac and PC, with either DHCP or MacIP address serving.

DHCP Address Serving

Windows 95 Workstation:

The Win95 workstation requests and renews its lease every half hour.

The Win95 workstation does NOT relinquish its DHCP address lease when the machine is shut down.

The lease can be manually expired using the WINIPCFG program from the Win95 machine, which is a command line program executable from the DOS prompt or from the START:RUN menu.

Windows 3.1 Workstation (MSTCP Version 3.11a):

The Win3.1 workstation requests and renews its lease every half hour.

The Win3.1 workstation does NOT relinquish its DHCP address lease when the user exits Windows and goes to DOS.

The lease can be manually expired by typing IPCONFIG /RELEASE from a DOS window within Windows or from the DOS prompt.</UL>

Macintosh Workstation (Open Transport Version 1.1 or later):

The Mac workstation requests and renews its lease every half hour.

The Mac workstation will relinquish its address upon shutdown in all but one case. If the TCP/IP control panel is set to initialize at start-up, and no IP services are used or the TCP/IP control panel is not opened, the DHCP address will NOT be relinquished upon shutdown. However, if the TCP/IP control panel is opened, or if an IP application is used, the Mac WILL relinquish the lease upon shutdown.

If the TCP/IP control panel is set to acquire an address only when needed (therefore a TCP/IP application must have been launched to obtain a lease) the Mac WILL relinquish its lease upon shutdown every time.

Netopia R2121 DHCP Server Characteristics

The Netopia R2121 ignores any lease-time associated with a DHCP request and automatically issues the DHCP address lease for one hour.

The number of devices a Netopia R2121 can serve DHCP to is 512. This is imposed by global limits on the size of the address serving database, which is shared by all address serving functions active in the router.

The Netopia R2121 does release the DHCP address back to the available DHCP address pool precisely

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Netopia manual Configuration, Dhcp Address Serving, Netopia R2121 Dhcp Server Characteristics

R2121 specifications

The Netopia R2121 is a powerful and versatile router designed for both home and office environments, providing seamless connectivity and robust performance for various networking needs. This device offers a range of features and technologies that cater to the demands of modern users seeking reliable internet access, speed, and security.

One of the standout characteristics of the Netopia R2121 is its dual-band technology, which operates on both the 2.4 GHz and 5 GHz frequency bands. This capability allows users to enjoy faster speeds and less interference, as the 5 GHz band is typically less congested than the traditional 2.4 GHz band. With the ability to support multiple devices simultaneously, the R2121 ensures that users can stream videos, play online games, and conduct video conferences without experiencing lag or connectivity issues.

The router is equipped with advanced security features, including WPA3 encryption, which provides enhanced protection against unauthorized access and data breaches. The R2121 also supports a robust firewall system that guards against external threats, ensuring that the user's network remains secure. Additionally, the router includes parental controls, allowing users to manage and restrict internet access for specific devices or set time limits for usage, making it an excellent choice for families.

Another significant advantage of the Netopia R2121 is its extensive coverage area. With high-gain antennas and advanced beamforming technology, the router can deliver strong and stable Wi-Fi signals even in larger homes or office spaces. This technology focuses the Wi-Fi signal directly toward connected devices, minimizing dead zones and improving overall connectivity.

The R2121 also supports both IPv4 and IPv6, ensuring compatibility with current and future internet technologies. This forward-thinking design makes it a future-proof solution for users looking to invest in a reliable router.

In terms of setup and management, the Netopia R2121 features a user-friendly web interface that allows users to easily customize settings, monitor network performance, and manage connected devices. The inclusion of mobile app support further enhances the user experience, enabling remote monitoring and control of the network from anywhere.

Overall, the Netopia R2121 stands out as a robust and reliable router that combines advanced features, enhanced security, and excellent performance, making it an ideal choice for home and business users alike. With its focus on delivering seamless connectivity and comprehensive management options, the R2121 is well-suited for today's connected lifestyles.