5. Configuring the FrameSaver DSL Router

Network Address Port Translation

Network Address Port Translation (NAPT) allows multiple clients in a local network to simultaneously access remote networks using a single IP address. This benefits telecommuters and SOHO (Small Office/Home Office) users that have multiple clients in an office running TCP/UDP applications. NAPT is sometimes referred to as PAT (Port Address Translation).

NAPT provides a many-to-one mapping and uses one public address to interface numerous private users to an external network. All hosts on the global side view all hosts on the local side as one Internet host. The local hosts continue to use their corporate or private addresses. When the hosts are communicating with each other, the translation is based on the IP address and the IP port numbers used by TCP/IP applications. Only TCP/UDP applications can access the public network.

NAPT Configuration Example

NAPT Example

 

Public

Public IP

10.1.3.1

Address

Network

FrameSaver

xDSL

Router

Ethernet

Private

Network

01-16947

In this NAPT example the router is configured for NAPT using:

A single public IP address. Multiple public addresses can be used.

A public network. NAPT can also be used between private networks.

￿An access list. A pool can also be used, instead or in addition.

NAPT Mapping Public IP Address

Private IP Addresses

 

 

172.20.95.2:zzzz

10.1.3.2:zzzz

 

 

172.20.95.2:yyyy

10.1.3.3:yyyy

 

 

172.20.95.2:xxxx

10.1.3.4:xxxx

 

 

5-8

December 2002

9700-A2-GB20-20

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Paradyne 9788, 9720 manual Network Address Port Translation, Napt Configuration Example
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9720, 9788 specifications

The Paradyne 9820-8M, 9788, 9128 standalone, 9128 carrier-mount, and 9820-2M are critical components in telecommunications networks, designed to enhance data transmission and improve connectivity. Each model offers unique features and capabilities that cater to various requirements in both enterprise and service provider environments.

The Paradyne 9820-8M is a multi-service access platform that provides high-speed connectivity for voice, video, and data transmission. It supports multiple protocols, enabling seamless integration into existing infrastructures. Key features include a modular design that allows for scalability and easy upgrades, ensuring that organizations can adapt to evolving demands. Its advanced error correction and QoS (Quality of Service) features ensure reliable performance, even in challenging network conditions.

The Paradyne 9788 serves as a versatile platform for both digital and analog communications. It excels in the delivery of broadband services, supporting T1/E1 lines and providing robust mechanisms for data transmission. This model emphasizes redundancy and resilience, with built-in protection switching capabilities that maintain service continuity during faults or maintenance activities. Its compact design makes it an ideal solution for environments with space constraints.

The 9128 standalone model is aimed at customers requiring an easy-to-deploy solution for point-to-point connections. This model offers critical features such as an intuitive user interface, comprehensive diagnostics, and monitoring capabilities that facilitate system management. It also supports diverse network topologies, making it suitable for various deployment scenarios.

In contrast, the 9128 carrier-mount version is engineered for organizations needing to manage multiple connections within a central office or remote site. This model is specifically designed to be mounted in standard telecom racks, optimizing space utilization while maintaining high performance. Its robust hardware allows for excellent thermal management and environmental resilience.

Lastly, the Paradyne 9820-2M combines versatility with high-performance capabilities, making it a reliable choice for service providers. It features dual-channel support, enabling simultaneous transmission and providing a cost-effective solution for high-capacity data needs. With enhanced security features, including encryption capabilities, the 9820-2M ensures that sensitive information transmitted across networks is protected against unauthorized access.

Collectively, these Paradyne models exemplify advanced telecommunications technology, offering scalability, resilience, and high performance. Their diverse features cater to the unique demands of various users, from enterprise networks to service providers, facilitating the continual evolution of communication technologies.
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