Telecom Italia S.p.a.

Raffaele Girardi

Andrea Di Giglio

Benedetto Riposati

Eugenlo Maria Maffione

Gianluca Rizzo

A method for preventing a temporary traffic interruption between two client ports and the consequent state transition of the receiving port in a communication network providing for the transmission of a data stream between two clients along at least one path when a fault condition is detected in the path. The method includes the steps of monitoring the data stream directed to the receiver and, upon detecting in the data stream an error sequence capable of starting the state transition, replacing the data stream with a filling data stream to prevent the receiver from detecting an error condition, and resuming the forwarding of the received data stream after a predetermined time interval. An apparatus able to mask to the receiver for the predetermined time interval, a storage area network and a computer program product are also disclosed.

Method and an apparatus for preventing traffic interruptions between client ports exchanging information through a communication network

A system for updating a data set through a geographical communication network. The data set is stored in a recovery storage unit located in a recovery data center and has to be updated with data blocks generated by a processing system located in a primary data center. The recovery data center is associated through the geographical communication network to a device provided with a temporary storage area for temporarily storing in corresponding storage locations the incoming data blocks generated by the processing system and directed to update the data set, wherein a first synchronous acknowledgement signal is provided to the primary data center acknowledging the successful writing in the temporary storage area of the data blocks as soon as the data blocks are written in the temporary storage area so as not to block or slow down the normal way of operating of the processing system, and wherein the locations of the temporary storage area occupied by the data blocks are made available for new incoming data blocks when a second acknowledgement signal is received acknowledging the successful updating of the data set.

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Turin, Italy

Raffaele Girardi