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Abstract

A system and method for providing high availability for data communications between two data networks. The system comprises at least two network modules for operatively connecting two data networks. Each network module includes a first and a second network interfaces. The network modules are interconnected using the first network interfaces. The data networks are connected respectively to the second network interfaces. A security or service module is included between the first and second network interfaces in each network module to provide security or otherwise a network service. Upon failure of one of the network modules, its two network interfaces are interconnected, thereby maintaining data traffic between the two network interfaces and between the two data networks.

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First Claim