5. Configuring the FrameSaver DSL Router

Network Address Translation

Network Address Translation (NAT) is used when a private network’s internal IP addresses cannot be used outside the private network. IP addresses may be restricted for privacy reasons, or they may not be valid public IP addresses.

The router provides NAT as described in RFC 1631, The IP Network Address Translator (NAT). NAT allows hosts in a private (local) network to transparently access the external (public or global) network by using a block of public addresses. Static mapping enables access to selected local hosts from the outside using these external IP addresses.

Traditional NAT and Network Address Port Translation (NAPT) are supported. When both NAT and NAPT are enabled, one-to-one NAT mapping is performed by translating a range of assigned public IP addresses to a similar-sized pool of private addresses, followed by many-to-one NAPT bindings. Up to 254 IP addresses can be allocated for NAT usage.

IP Options Processing

The NAT and NAPT functions handle and process the IP datagrams with options set as described below. No command is available to set IP options.

The router does not process (and drops) any IP datagrams with the following IP options:

Loose source and record route (type 131)

Strict source and record route (type 133)

Security (type 130)

￿Stream ID (type 136)

The router does process IP datagrams with the following IP options, but does not provide its IP address or timestamp information in the response message:

Record route (type 7)

￿Timestamp (type 68)

Applications Supported by NAT

The router supports the following applications and protocols:

FTP

HTTP

Ping

RealPlayer

Telnet

￿TFTP

9700-A2-GB20-20

December 2002

5-5

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Paradyne 9720, 9788 manual Network Address Translation, IP Options Processing, Applications Supported by NAT
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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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